/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.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:09:57,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:09:57,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:09:57,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:09:57,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:09:57,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:09:57,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:09:57,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:09:57,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:09:57,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:09:57,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:09:57,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:09:57,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:09:57,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:09:57,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:09:57,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:09:57,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:09:57,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:09:57,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:09:57,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:09:57,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:09:57,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:09:57,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:09:57,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:09:57,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:09:57,324 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:09:57,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:09:57,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:09:57,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:09:57,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:09:57,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:09:57,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:09:57,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:09:57,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:09:57,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:09:57,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:09:57,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:09:57,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:09:57,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:09:57,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:09:57,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:09:57,336 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 19:09:57,376 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:09:57,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:09:57,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:09:57,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:09:57,379 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:09:57,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:09:57,380 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:09:57,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:09:57,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:09:57,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:09:57,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:09:57,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:09:57,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:09:57,382 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:09:57,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:09:57,382 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:09:57,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:09:57,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:09:57,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:09:57,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:09:57,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:09:57,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:09:57,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:09:57,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:09:57,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:09:57,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:09:57,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:09:57,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:09:57,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:09:57,385 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 19:09:57,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:09:57,718 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:09:57,721 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:09:57,722 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:09:57,723 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:09:57,724 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 19:09:57,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d48f6f0a1/74e85bf82f85454fb69bd4226e072228/FLAG6a4e717ec [2020-10-12 19:09:58,299 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:09:58,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 19:09:58,311 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d48f6f0a1/74e85bf82f85454fb69bd4226e072228/FLAG6a4e717ec [2020-10-12 19:09:58,577 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d48f6f0a1/74e85bf82f85454fb69bd4226e072228 [2020-10-12 19:09:58,585 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:09:58,587 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:09:58,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:09:58,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:09:58,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:09:58,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:09:58" (1/1) ... [2020-10-12 19:09:58,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39dbfceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:09:58, skipping insertion in model container [2020-10-12 19:09:58,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:09:58" (1/1) ... [2020-10-12 19:09:58,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:09:58,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:09:59,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:09:59,180 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:09:59,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:09:59,328 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:09:59,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:09:59 WrapperNode [2020-10-12 19:09:59,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:09:59,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:09:59,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:09:59,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:09:59,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:09:59" (1/1) ... [2020-10-12 19:09:59,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:09:59" (1/1) ... [2020-10-12 19:09:59,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:09:59" (1/1) ... [2020-10-12 19:09:59,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:09:59" (1/1) ... [2020-10-12 19:09:59,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:09:59" (1/1) ... [2020-10-12 19:09:59,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:09:59" (1/1) ... [2020-10-12 19:09:59,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:09:59" (1/1) ... [2020-10-12 19:09:59,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:09:59,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:09:59,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:09:59,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:09:59,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:09:59" (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 19:09:59,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:09:59,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:09:59,533 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:09:59,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:09:59,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:09:59,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:09:59,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:09:59,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:09:59,536 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:09:59,537 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:09:59,537 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:09:59,537 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:09:59,537 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:09:59,537 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:09:59,538 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:09:59,540 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:09:59,540 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:09:59,540 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:09:59,540 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:09:59,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:09:59,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:10:00,661 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:10:00,662 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:10:00,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:10:00 BoogieIcfgContainer [2020-10-12 19:10:00,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:10:00,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:10:00,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:10:00,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:10:00,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:09:58" (1/3) ... [2020-10-12 19:10:00,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5081cf7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:10:00, skipping insertion in model container [2020-10-12 19:10:00,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:09:59" (2/3) ... [2020-10-12 19:10:00,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5081cf7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:10:00, skipping insertion in model container [2020-10-12 19:10:00,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:10:00" (3/3) ... [2020-10-12 19:10:00,677 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 19:10:00,687 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:10:00,695 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-12 19:10:00,709 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-12 19:10:00,736 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:10:00,736 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:10:00,736 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:10:00,736 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:10:00,737 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:10:00,737 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:10:00,737 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:10:00,737 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:10:00,760 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states. [2020-10-12 19:10:00,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 19:10:00,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:10:00,774 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] [2020-10-12 19:10:00,774 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:10:00,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:10:00,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1598818953, now seen corresponding path program 1 times [2020-10-12 19:10:00,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:10:00,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722264489] [2020-10-12 19:10:00,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:10:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:01,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:01,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:01,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:01,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:01,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:02,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:03,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:03,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:04,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:04,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:05,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:06,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:06,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 19:10:06,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:10:06,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-12 19:10:06,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:06,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:10:06,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:10:06,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 19:10:06,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-12 19:10:06,659 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 19:10:06,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:10:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:06,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:06,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:06,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:10:06,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:10:06,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:10:06,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:06,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:10:06,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:10:06,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:10:06,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:10:06,724 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 19:10:06,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722264489] [2020-10-12 19:10:06,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:10:06,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:10:06,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593325272] [2020-10-12 19:10:06,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:10:06,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:10:06,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:10:06,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:10:06,751 INFO L87 Difference]: Start difference. First operand 250 states. Second operand 5 states. [2020-10-12 19:10:09,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:10:09,050 INFO L93 Difference]: Finished difference Result 697 states and 1236 transitions. [2020-10-12 19:10:09,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:10:09,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-12 19:10:09,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:10:09,075 INFO L225 Difference]: With dead ends: 697 [2020-10-12 19:10:09,075 INFO L226 Difference]: Without dead ends: 462 [2020-10-12 19:10:09,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:10:09,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-10-12 19:10:09,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 437. [2020-10-12 19:10:09,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-10-12 19:10:09,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 633 transitions. [2020-10-12 19:10:09,167 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 633 transitions. Word has length 96 [2020-10-12 19:10:09,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:10:09,168 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 633 transitions. [2020-10-12 19:10:09,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:10:09,168 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 633 transitions. [2020-10-12 19:10:09,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-12 19:10:09,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:10:09,173 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] [2020-10-12 19:10:09,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:10:09,174 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:10:09,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:10:09,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1018962981, now seen corresponding path program 1 times [2020-10-12 19:10:09,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:10:09,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660597119] [2020-10-12 19:10:09,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:10:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:09,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:09,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:09,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:09,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:09,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:09,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:09,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:14,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:14,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 19:10:14,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:10:14,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:10:14,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:14,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:10:14,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:10:14,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 19:10:14,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:10:14,576 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 19:10:14,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:10:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:14,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:14,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:14,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:10:14,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:10:14,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:10:14,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:14,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:10:14,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:10:14,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:10:14,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:10:14,650 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 19:10:14,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660597119] [2020-10-12 19:10:14,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:10:14,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:10:14,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208786185] [2020-10-12 19:10:14,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:10:14,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:10:14,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:10:14,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:10:14,656 INFO L87 Difference]: Start difference. First operand 437 states and 633 transitions. Second operand 5 states. [2020-10-12 19:10:17,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:10:17,025 INFO L93 Difference]: Finished difference Result 1247 states and 1798 transitions. [2020-10-12 19:10:17,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:10:17,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-12 19:10:17,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:10:17,031 INFO L225 Difference]: With dead ends: 1247 [2020-10-12 19:10:17,032 INFO L226 Difference]: Without dead ends: 829 [2020-10-12 19:10:17,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:10:17,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2020-10-12 19:10:17,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 817. [2020-10-12 19:10:17,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 817 states. [2020-10-12 19:10:17,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1172 transitions. [2020-10-12 19:10:17,105 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1172 transitions. Word has length 97 [2020-10-12 19:10:17,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:10:17,107 INFO L479 AbstractCegarLoop]: Abstraction has 817 states and 1172 transitions. [2020-10-12 19:10:17,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:10:17,108 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1172 transitions. [2020-10-12 19:10:17,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 19:10:17,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:10:17,115 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] [2020-10-12 19:10:17,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:10:17,139 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:10:17,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:10:17,139 INFO L82 PathProgramCache]: Analyzing trace with hash -655761256, now seen corresponding path program 1 times [2020-10-12 19:10:17,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:10:17,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146873835] [2020-10-12 19:10:17,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:10:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:17,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:17,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:17,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:17,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:17,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:17,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:18,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:18,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:21,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:21,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:21,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:21,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:22,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:22,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 19:10:22,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:10:22,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 19:10:22,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:22,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:10:22,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 19:10:22,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 19:10:22,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:10:22,489 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 19:10:22,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:10:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:22,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:22,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:22,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:10:22,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:10:22,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:10:22,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:22,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:10:22,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:10:22,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:10:22,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:10:22,542 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 19:10:22,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146873835] [2020-10-12 19:10:22,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:10:22,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:10:22,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872631338] [2020-10-12 19:10:22,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:10:22,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:10:22,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:10:22,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:10:22,546 INFO L87 Difference]: Start difference. First operand 817 states and 1172 transitions. Second operand 5 states. [2020-10-12 19:10:23,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:10:23,668 INFO L93 Difference]: Finished difference Result 1590 states and 2279 transitions. [2020-10-12 19:10:23,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:10:23,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-12 19:10:23,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:10:23,674 INFO L225 Difference]: With dead ends: 1590 [2020-10-12 19:10:23,675 INFO L226 Difference]: Without dead ends: 817 [2020-10-12 19:10:23,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:10:23,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2020-10-12 19:10:23,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 817. [2020-10-12 19:10:23,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 817 states. [2020-10-12 19:10:23,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1168 transitions. [2020-10-12 19:10:23,725 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1168 transitions. Word has length 98 [2020-10-12 19:10:23,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:10:23,725 INFO L479 AbstractCegarLoop]: Abstraction has 817 states and 1168 transitions. [2020-10-12 19:10:23,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:10:23,726 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1168 transitions. [2020-10-12 19:10:23,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-12 19:10:23,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:10:23,732 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] [2020-10-12 19:10:23,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:10:23,733 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:10:23,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:10:23,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1338958443, now seen corresponding path program 1 times [2020-10-12 19:10:23,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:10:23,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204375372] [2020-10-12 19:10:23,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:10:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:23,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:23,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:23,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:23,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:24,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:24,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:24,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:25,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:25,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:28,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:28,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:28,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:28,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 19:10:28,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:10:28,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:10:28,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:28,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:10:28,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:10:28,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 19:10:28,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:10:29,088 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 19:10:29,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:10:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:29,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:29,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:29,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:10:29,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:10:29,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:10:29,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:29,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:10:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:10:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:10:29,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:10:29,145 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 19:10:29,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204375372] [2020-10-12 19:10:29,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:10:29,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:10:29,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744343091] [2020-10-12 19:10:29,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:10:29,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:10:29,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:10:29,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:10:29,150 INFO L87 Difference]: Start difference. First operand 817 states and 1168 transitions. Second operand 5 states. [2020-10-12 19:10:31,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:10:31,114 INFO L93 Difference]: Finished difference Result 2277 states and 3271 transitions. [2020-10-12 19:10:31,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:10:31,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-12 19:10:31,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:10:31,122 INFO L225 Difference]: With dead ends: 2277 [2020-10-12 19:10:31,123 INFO L226 Difference]: Without dead ends: 1583 [2020-10-12 19:10:31,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:10:31,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2020-10-12 19:10:31,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1568. [2020-10-12 19:10:31,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-10-12 19:10:31,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2222 transitions. [2020-10-12 19:10:31,236 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2222 transitions. Word has length 99 [2020-10-12 19:10:31,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:10:31,238 INFO L479 AbstractCegarLoop]: Abstraction has 1568 states and 2222 transitions. [2020-10-12 19:10:31,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:10:31,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2222 transitions. [2020-10-12 19:10:31,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-12 19:10:31,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:10:31,250 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] [2020-10-12 19:10:31,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:10:31,250 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:10:31,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:10:31,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1555962976, now seen corresponding path program 1 times [2020-10-12 19:10:31,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:10:31,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081509514] [2020-10-12 19:10:31,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:10:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:31,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:31,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:31,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:31,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:31,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:31,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:31,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:32,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:34,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:34,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:34,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:36,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:36,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:36,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:36,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 19:10:36,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:10:36,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:10:36,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:36,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:10:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 19:10:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 19:10:36,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:10:36,634 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 19:10:36,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:10:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:36,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:36,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:36,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:10:36,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:10:36,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:10:36,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:36,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:10:36,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:10:36,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:10:36,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:10:36,694 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 19:10:36,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081509514] [2020-10-12 19:10:36,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:10:36,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:10:36,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987301592] [2020-10-12 19:10:36,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:10:36,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:10:36,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:10:36,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:10:36,697 INFO L87 Difference]: Start difference. First operand 1568 states and 2222 transitions. Second operand 5 states. [2020-10-12 19:10:37,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:10:37,997 INFO L93 Difference]: Finished difference Result 2516 states and 3608 transitions. [2020-10-12 19:10:37,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:10:37,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-12 19:10:37,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:10:38,008 INFO L225 Difference]: With dead ends: 2516 [2020-10-12 19:10:38,008 INFO L226 Difference]: Without dead ends: 1213 [2020-10-12 19:10:38,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:10:38,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2020-10-12 19:10:38,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1211. [2020-10-12 19:10:38,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1211 states. [2020-10-12 19:10:38,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1708 transitions. [2020-10-12 19:10:38,137 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1708 transitions. Word has length 100 [2020-10-12 19:10:38,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:10:38,138 INFO L479 AbstractCegarLoop]: Abstraction has 1211 states and 1708 transitions. [2020-10-12 19:10:38,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:10:38,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1708 transitions. [2020-10-12 19:10:38,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 19:10:38,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:10:38,145 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] [2020-10-12 19:10:38,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:10:38,146 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:10:38,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:10:38,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1666999237, now seen corresponding path program 1 times [2020-10-12 19:10:38,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:10:38,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24340397] [2020-10-12 19:10:38,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:10:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:38,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:38,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:38,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:38,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:38,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:38,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:38,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:39,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:40,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:40,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:41,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:41,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:43,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:43,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 19:10:43,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:10:43,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:10:43,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:43,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:10:43,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:10:43,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 19:10:43,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:10:43,488 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 19:10:43,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:10:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:43,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:43,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:43,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:10:43,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:10:43,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:10:43,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:43,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:10:43,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:10:43,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:10:43,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:10:43,585 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 19:10:43,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24340397] [2020-10-12 19:10:43,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:10:43,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:10:43,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098021499] [2020-10-12 19:10:43,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:10:43,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:10:43,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:10:43,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:10:43,588 INFO L87 Difference]: Start difference. First operand 1211 states and 1708 transitions. Second operand 5 states. [2020-10-12 19:10:45,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:10:45,433 INFO L93 Difference]: Finished difference Result 2572 states and 3685 transitions. [2020-10-12 19:10:45,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:10:45,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-12 19:10:45,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:10:45,444 INFO L225 Difference]: With dead ends: 2572 [2020-10-12 19:10:45,444 INFO L226 Difference]: Without dead ends: 1817 [2020-10-12 19:10:45,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:10:45,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1817 states. [2020-10-12 19:10:45,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1817 to 1786. [2020-10-12 19:10:45,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1786 states. [2020-10-12 19:10:45,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 2489 transitions. [2020-10-12 19:10:45,600 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 2489 transitions. Word has length 103 [2020-10-12 19:10:45,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:10:45,601 INFO L479 AbstractCegarLoop]: Abstraction has 1786 states and 2489 transitions. [2020-10-12 19:10:45,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:10:45,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 2489 transitions. [2020-10-12 19:10:45,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-12 19:10:45,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:10:45,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:10:45,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:10:45,605 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:10:45,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:10:45,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1130058833, now seen corresponding path program 1 times [2020-10-12 19:10:45,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:10:45,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672272244] [2020-10-12 19:10:45,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:10:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:45,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:45,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:45,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:45,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:45,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:46,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:46,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:46,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:47,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:47,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 19:10:47,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:10:47,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2325 [2020-10-12 19:10:47,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:47,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:10:47,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:10:47,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 19:10:47,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:10:48,190 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 19:10:48,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:10:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:48,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:48,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:48,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:10:48,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:10:48,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:10:48,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:48,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:10:48,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:10:48,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:10:48,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:10:48,232 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 19:10:48,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672272244] [2020-10-12 19:10:48,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:10:48,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:10:48,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221654961] [2020-10-12 19:10:48,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:10:48,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:10:48,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:10:48,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:10:48,235 INFO L87 Difference]: Start difference. First operand 1786 states and 2489 transitions. Second operand 5 states. [2020-10-12 19:10:49,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:10:49,393 INFO L93 Difference]: Finished difference Result 3537 states and 4925 transitions. [2020-10-12 19:10:49,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:10:49,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-12 19:10:49,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:10:49,403 INFO L225 Difference]: With dead ends: 3537 [2020-10-12 19:10:49,403 INFO L226 Difference]: Without dead ends: 1781 [2020-10-12 19:10:49,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:10:49,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2020-10-12 19:10:49,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1781. [2020-10-12 19:10:49,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1781 states. [2020-10-12 19:10:49,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 2475 transitions. [2020-10-12 19:10:49,531 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 2475 transitions. Word has length 107 [2020-10-12 19:10:49,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:10:49,531 INFO L479 AbstractCegarLoop]: Abstraction has 1781 states and 2475 transitions. [2020-10-12 19:10:49,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:10:49,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 2475 transitions. [2020-10-12 19:10:49,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 19:10:49,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:10:49,535 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] [2020-10-12 19:10:49,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:10:49,535 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:10:49,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:10:49,536 INFO L82 PathProgramCache]: Analyzing trace with hash 817548353, now seen corresponding path program 1 times [2020-10-12 19:10:49,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:10:49,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870526327] [2020-10-12 19:10:49,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:10:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:49,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:49,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:49,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:49,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:49,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:49,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:50,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:50,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:51,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:51,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 19:10:51,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:10:51,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2141 [2020-10-12 19:10:51,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:51,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:10:51,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:10:51,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 19:10:51,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:10:51,990 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 19:10:51,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:10:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:51,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:52,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:52,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:10:52,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:10:52,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:10:52,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:52,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:10:52,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:10:52,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:10:52,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:10:52,046 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 19:10:52,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870526327] [2020-10-12 19:10:52,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:10:52,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:10:52,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880950273] [2020-10-12 19:10:52,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:10:52,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:10:52,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:10:52,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:10:52,049 INFO L87 Difference]: Start difference. First operand 1781 states and 2475 transitions. Second operand 5 states. [2020-10-12 19:10:54,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:10:54,176 INFO L93 Difference]: Finished difference Result 4461 states and 6218 transitions. [2020-10-12 19:10:54,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:10:54,177 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-12 19:10:54,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:10:54,191 INFO L225 Difference]: With dead ends: 4461 [2020-10-12 19:10:54,191 INFO L226 Difference]: Without dead ends: 2899 [2020-10-12 19:10:54,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:10:54,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-10-12 19:10:54,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 2867. [2020-10-12 19:10:54,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2867 states. [2020-10-12 19:10:54,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2867 states to 2867 states and 3925 transitions. [2020-10-12 19:10:54,416 INFO L78 Accepts]: Start accepts. Automaton has 2867 states and 3925 transitions. Word has length 108 [2020-10-12 19:10:54,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:10:54,418 INFO L479 AbstractCegarLoop]: Abstraction has 2867 states and 3925 transitions. [2020-10-12 19:10:54,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:10:54,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 3925 transitions. [2020-10-12 19:10:54,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 19:10:54,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:10:54,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:10:54,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:10:54,424 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:10:54,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:10:54,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1303036053, now seen corresponding path program 1 times [2020-10-12 19:10:54,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:10:54,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346474796] [2020-10-12 19:10:54,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:10:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:54,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:54,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:54,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:54,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:54,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:54,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:54,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:54,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:55,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:55,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:56,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:57,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:57,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-12 19:10:57,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:10:57,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3104 [2020-10-12 19:10:57,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:10:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:10:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 19:10:57,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:10:57,772 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 19:10:57,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:10:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:57,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:57,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:57,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:10:57,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:10:57,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:10:57,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:57,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:10:57,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:10:57,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:10:57,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:10:57,814 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 19:10:57,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346474796] [2020-10-12 19:10:57,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:10:57,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:10:57,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582202379] [2020-10-12 19:10:57,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:10:57,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:10:57,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:10:57,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:10:57,816 INFO L87 Difference]: Start difference. First operand 2867 states and 3925 transitions. Second operand 5 states. [2020-10-12 19:10:58,049 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-12 19:11:00,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:11:00,033 INFO L93 Difference]: Finished difference Result 5148 states and 7034 transitions. [2020-10-12 19:11:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:11:00,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-12 19:11:00,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:11:00,046 INFO L225 Difference]: With dead ends: 5148 [2020-10-12 19:11:00,047 INFO L226 Difference]: Without dead ends: 2859 [2020-10-12 19:11:00,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:11:00,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2020-10-12 19:11:00,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 2845. [2020-10-12 19:11:00,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2845 states. [2020-10-12 19:11:00,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2845 states to 2845 states and 3882 transitions. [2020-10-12 19:11:00,252 INFO L78 Accepts]: Start accepts. Automaton has 2845 states and 3882 transitions. Word has length 109 [2020-10-12 19:11:00,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:11:00,252 INFO L479 AbstractCegarLoop]: Abstraction has 2845 states and 3882 transitions. [2020-10-12 19:11:00,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:11:00,252 INFO L276 IsEmpty]: Start isEmpty. Operand 2845 states and 3882 transitions. [2020-10-12 19:11:00,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 19:11:00,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:11:00,260 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] [2020-10-12 19:11:00,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:11:00,260 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:11:00,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:11:00,260 INFO L82 PathProgramCache]: Analyzing trace with hash 301412573, now seen corresponding path program 1 times [2020-10-12 19:11:00,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:11:00,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509147849] [2020-10-12 19:11:00,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:11:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:00,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:00,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:00,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:00,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:00,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:00,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:00,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:01,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:01,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:01,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:01,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:03,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:03,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 19:11:03,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:11:03,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3183 [2020-10-12 19:11:03,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:03,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:11:03,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:11:03,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 19:11:03,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:03,687 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 19:11:03,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:11:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:03,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:03,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:03,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:11:03,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:11:03,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:11:03,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:03,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:11:03,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:11:03,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:11:03,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:03,723 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 19:11:03,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509147849] [2020-10-12 19:11:03,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:11:03,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:11:03,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538461758] [2020-10-12 19:11:03,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:11:03,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:11:03,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:11:03,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:11:03,725 INFO L87 Difference]: Start difference. First operand 2845 states and 3882 transitions. Second operand 5 states. [2020-10-12 19:11:05,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:11:05,151 INFO L93 Difference]: Finished difference Result 5101 states and 6884 transitions. [2020-10-12 19:11:05,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:11:05,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-12 19:11:05,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:11:05,162 INFO L225 Difference]: With dead ends: 5101 [2020-10-12 19:11:05,162 INFO L226 Difference]: Without dead ends: 2862 [2020-10-12 19:11:05,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:11:05,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2020-10-12 19:11:05,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2829. [2020-10-12 19:11:05,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2829 states. [2020-10-12 19:11:05,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2829 states to 2829 states and 3825 transitions. [2020-10-12 19:11:05,418 INFO L78 Accepts]: Start accepts. Automaton has 2829 states and 3825 transitions. Word has length 110 [2020-10-12 19:11:05,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:11:05,418 INFO L479 AbstractCegarLoop]: Abstraction has 2829 states and 3825 transitions. [2020-10-12 19:11:05,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:11:05,419 INFO L276 IsEmpty]: Start isEmpty. Operand 2829 states and 3825 transitions. [2020-10-12 19:11:05,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 19:11:05,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:11:05,424 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] [2020-10-12 19:11:05,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:11:05,424 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:11:05,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:11:05,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1085008160, now seen corresponding path program 1 times [2020-10-12 19:11:05,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:11:05,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282388343] [2020-10-12 19:11:05,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:11:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:05,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:05,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:05,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:05,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:05,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:05,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:06,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:06,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:08,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:09,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:10,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:10,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 19:11:10,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:11:10,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:11:10,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:10,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:11:10,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:11:10,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 19:11:10,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:10,963 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 19:11:10,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:11:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:10,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:10,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:10,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:11:10,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:11:10,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:11:10,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:10,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:11:10,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:11:10,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:11:10,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:11,016 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 19:11:11,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282388343] [2020-10-12 19:11:11,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:11:11,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:11:11,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196997175] [2020-10-12 19:11:11,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:11:11,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:11:11,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:11:11,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:11:11,019 INFO L87 Difference]: Start difference. First operand 2829 states and 3825 transitions. Second operand 13 states. [2020-10-12 19:11:11,264 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 19:11:21,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:11:21,282 INFO L93 Difference]: Finished difference Result 26708 states and 40989 transitions. [2020-10-12 19:11:21,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-10-12 19:11:21,283 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 110 [2020-10-12 19:11:21,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:11:21,368 INFO L225 Difference]: With dead ends: 26708 [2020-10-12 19:11:21,368 INFO L226 Difference]: Without dead ends: 25064 [2020-10-12 19:11:21,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3039 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1415, Invalid=6957, Unknown=0, NotChecked=0, Total=8372 [2020-10-12 19:11:21,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25064 states. [2020-10-12 19:11:22,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25064 to 9655. [2020-10-12 19:11:22,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9655 states. [2020-10-12 19:11:22,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9655 states to 9655 states and 14628 transitions. [2020-10-12 19:11:22,353 INFO L78 Accepts]: Start accepts. Automaton has 9655 states and 14628 transitions. Word has length 110 [2020-10-12 19:11:22,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:11:22,354 INFO L479 AbstractCegarLoop]: Abstraction has 9655 states and 14628 transitions. [2020-10-12 19:11:22,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:11:22,354 INFO L276 IsEmpty]: Start isEmpty. Operand 9655 states and 14628 transitions. [2020-10-12 19:11:22,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 19:11:22,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:11:22,360 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] [2020-10-12 19:11:22,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:11:22,360 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:11:22,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:11:22,360 INFO L82 PathProgramCache]: Analyzing trace with hash 721334890, now seen corresponding path program 1 times [2020-10-12 19:11:22,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:11:22,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200675402] [2020-10-12 19:11:22,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:11:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:22,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:22,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:22,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:22,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:22,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:22,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:22,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:25,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:26,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:26,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:27,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:27,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:27,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:27,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 19:11:27,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:11:27,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:11:27,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:27,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 19:11:27,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:11:27,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 19:11:27,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:27,907 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 27 [2020-10-12 19:11:28,440 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 19:11:28,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:11:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:28,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:28,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:28,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:11:28,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:11:28,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:11:28,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:11:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:11:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:11:28,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:28,495 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 19:11:28,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200675402] [2020-10-12 19:11:28,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:11:28,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 19:11:28,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366975219] [2020-10-12 19:11:28,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 19:11:28,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:11:28,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 19:11:28,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:11:28,497 INFO L87 Difference]: Start difference. First operand 9655 states and 14628 transitions. Second operand 17 states. [2020-10-12 19:11:28,796 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:11:30,865 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-10-12 19:11:38,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:11:38,287 INFO L93 Difference]: Finished difference Result 19688 states and 29886 transitions. [2020-10-12 19:11:38,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-12 19:11:38,288 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 110 [2020-10-12 19:11:38,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:11:38,332 INFO L225 Difference]: With dead ends: 19688 [2020-10-12 19:11:38,333 INFO L226 Difference]: Without dead ends: 19675 [2020-10-12 19:11:38,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=423, Invalid=1557, Unknown=0, NotChecked=0, Total=1980 [2020-10-12 19:11:38,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19675 states. [2020-10-12 19:11:39,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19675 to 10203. [2020-10-12 19:11:39,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10203 states. [2020-10-12 19:11:39,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10203 states to 10203 states and 15316 transitions. [2020-10-12 19:11:39,632 INFO L78 Accepts]: Start accepts. Automaton has 10203 states and 15316 transitions. Word has length 110 [2020-10-12 19:11:39,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:11:39,632 INFO L479 AbstractCegarLoop]: Abstraction has 10203 states and 15316 transitions. [2020-10-12 19:11:39,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 19:11:39,632 INFO L276 IsEmpty]: Start isEmpty. Operand 10203 states and 15316 transitions. [2020-10-12 19:11:39,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 19:11:39,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:11:39,639 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] [2020-10-12 19:11:39,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:11:39,639 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:11:39,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:11:39,640 INFO L82 PathProgramCache]: Analyzing trace with hash -721297157, now seen corresponding path program 1 times [2020-10-12 19:11:39,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:11:39,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187043238] [2020-10-12 19:11:39,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:11:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:39,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:39,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:39,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:39,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:40,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:40,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:40,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:44,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:44,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 19:11:44,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:11:44,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:11:44,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:44,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:11:44,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:11:44,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 19:11:44,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:44,887 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 19:11:44,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:11:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:44,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:44,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:44,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:11:44,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:11:44,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:11:44,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:44,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:11:44,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:11:44,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:11:44,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:44,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:11:44,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187043238] [2020-10-12 19:11:44,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:11:44,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:11:44,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563956642] [2020-10-12 19:11:44,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:11:44,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:11:44,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:11:44,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:11:44,926 INFO L87 Difference]: Start difference. First operand 10203 states and 15316 transitions. Second operand 6 states. [2020-10-12 19:11:45,146 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 19:11:47,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:11:47,103 INFO L93 Difference]: Finished difference Result 17636 states and 27027 transitions. [2020-10-12 19:11:47,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:11:47,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2020-10-12 19:11:47,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:11:47,118 INFO L225 Difference]: With dead ends: 17636 [2020-10-12 19:11:47,118 INFO L226 Difference]: Without dead ends: 9615 [2020-10-12 19:11:47,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:11:47,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9615 states. [2020-10-12 19:11:48,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9615 to 9607. [2020-10-12 19:11:48,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9607 states. [2020-10-12 19:11:48,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9607 states to 9607 states and 14498 transitions. [2020-10-12 19:11:48,309 INFO L78 Accepts]: Start accepts. Automaton has 9607 states and 14498 transitions. Word has length 110 [2020-10-12 19:11:48,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:11:48,309 INFO L479 AbstractCegarLoop]: Abstraction has 9607 states and 14498 transitions. [2020-10-12 19:11:48,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:11:48,309 INFO L276 IsEmpty]: Start isEmpty. Operand 9607 states and 14498 transitions. [2020-10-12 19:11:48,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 19:11:48,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:11:48,315 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] [2020-10-12 19:11:48,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:11:48,315 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:11:48,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:11:48,315 INFO L82 PathProgramCache]: Analyzing trace with hash 772875328, now seen corresponding path program 1 times [2020-10-12 19:11:48,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:11:48,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916978518] [2020-10-12 19:11:48,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:11:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:48,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:48,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:48,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:48,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:48,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:49,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:50,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:50,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 19:11:50,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:11:50,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1762 [2020-10-12 19:11:50,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:50,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:11:50,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-12 19:11:50,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 19:11:50,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:50,341 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 19:11:50,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:11:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:50,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:50,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:50,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:11:50,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:11:50,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:11:50,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:50,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:11:50,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:11:50,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:11:50,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:50,370 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 19:11:50,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916978518] [2020-10-12 19:11:50,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:11:50,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:11:50,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917881579] [2020-10-12 19:11:50,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:11:50,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:11:50,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:11:50,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:11:50,372 INFO L87 Difference]: Start difference. First operand 9607 states and 14498 transitions. Second operand 5 states. [2020-10-12 19:11:52,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:11:52,243 INFO L93 Difference]: Finished difference Result 10884 states and 16423 transitions. [2020-10-12 19:11:52,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:11:52,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-12 19:11:52,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:11:52,256 INFO L225 Difference]: With dead ends: 10884 [2020-10-12 19:11:52,256 INFO L226 Difference]: Without dead ends: 8379 [2020-10-12 19:11:52,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:11:52,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8379 states. [2020-10-12 19:11:53,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8379 to 8375. [2020-10-12 19:11:53,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8375 states. [2020-10-12 19:11:53,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8375 states to 8375 states and 12632 transitions. [2020-10-12 19:11:53,105 INFO L78 Accepts]: Start accepts. Automaton has 8375 states and 12632 transitions. Word has length 110 [2020-10-12 19:11:53,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:11:53,105 INFO L479 AbstractCegarLoop]: Abstraction has 8375 states and 12632 transitions. [2020-10-12 19:11:53,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:11:53,105 INFO L276 IsEmpty]: Start isEmpty. Operand 8375 states and 12632 transitions. [2020-10-12 19:11:53,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 19:11:53,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:11:53,114 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] [2020-10-12 19:11:53,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:11:53,114 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:11:53,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:11:53,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1193491712, now seen corresponding path program 1 times [2020-10-12 19:11:53,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:11:53,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726617601] [2020-10-12 19:11:53,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:11:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:53,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:53,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:53,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:53,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:53,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:53,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:53,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:53,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 19:11:53,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:11:53,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-10-12 19:11:53,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:53,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:11:53,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:11:53,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 19:11:53,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:54,006 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 19:11:54,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:11:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:54,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:54,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:54,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:11:54,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:11:54,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:11:54,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:54,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:11:54,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:11:54,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:11:54,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:54,035 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 19:11:54,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726617601] [2020-10-12 19:11:54,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:11:54,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:11:54,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99664227] [2020-10-12 19:11:54,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:11:54,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:11:54,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:11:54,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:11:54,037 INFO L87 Difference]: Start difference. First operand 8375 states and 12632 transitions. Second operand 5 states. [2020-10-12 19:11:56,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:11:56,406 INFO L93 Difference]: Finished difference Result 18593 states and 28161 transitions. [2020-10-12 19:11:56,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:11:56,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-12 19:11:56,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:11:56,419 INFO L225 Difference]: With dead ends: 18593 [2020-10-12 19:11:56,419 INFO L226 Difference]: Without dead ends: 11038 [2020-10-12 19:11:56,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:11:56,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11038 states. [2020-10-12 19:11:57,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11038 to 10962. [2020-10-12 19:11:57,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10962 states. [2020-10-12 19:11:57,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10962 states to 10962 states and 16175 transitions. [2020-10-12 19:11:57,733 INFO L78 Accepts]: Start accepts. Automaton has 10962 states and 16175 transitions. Word has length 110 [2020-10-12 19:11:57,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:11:57,733 INFO L479 AbstractCegarLoop]: Abstraction has 10962 states and 16175 transitions. [2020-10-12 19:11:57,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:11:57,733 INFO L276 IsEmpty]: Start isEmpty. Operand 10962 states and 16175 transitions. [2020-10-12 19:11:57,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 19:11:57,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:11:57,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:11:57,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 19:11:57,737 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:11:57,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:11:57,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1040473311, now seen corresponding path program 1 times [2020-10-12 19:11:57,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:11:57,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411153583] [2020-10-12 19:11:57,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:11:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:57,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:57,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:57,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:58,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:58,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:58,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:59,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:02,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:02,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 19:12:02,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:12:02,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:12:02,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:02,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:12:02,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:12:02,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 19:12:02,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:03,148 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 19:12:03,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:12:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:03,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:03,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:03,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:12:03,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:12:03,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:12:03,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:03,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:12:03,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:12:03,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:12:03,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:03,195 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 19:12:03,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411153583] [2020-10-12 19:12:03,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:12:03,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:12:03,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985463870] [2020-10-12 19:12:03,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:12:03,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:12:03,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:12:03,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:12:03,197 INFO L87 Difference]: Start difference. First operand 10962 states and 16175 transitions. Second operand 13 states. [2020-10-12 19:12:03,425 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-12 19:12:35,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:12:35,824 INFO L93 Difference]: Finished difference Result 188668 states and 289603 transitions. [2020-10-12 19:12:35,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-12 19:12:35,824 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 114 [2020-10-12 19:12:35,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:12:36,089 INFO L225 Difference]: With dead ends: 188668 [2020-10-12 19:12:36,089 INFO L226 Difference]: Without dead ends: 179188 [2020-10-12 19:12:36,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1775 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1012, Invalid=4244, Unknown=0, NotChecked=0, Total=5256 [2020-10-12 19:12:36,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179188 states. [2020-10-12 19:12:47,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179188 to 65740. [2020-10-12 19:12:47,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65740 states. [2020-10-12 19:12:47,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65740 states to 65740 states and 101764 transitions. [2020-10-12 19:12:47,758 INFO L78 Accepts]: Start accepts. Automaton has 65740 states and 101764 transitions. Word has length 114 [2020-10-12 19:12:47,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:12:47,759 INFO L479 AbstractCegarLoop]: Abstraction has 65740 states and 101764 transitions. [2020-10-12 19:12:47,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:12:47,759 INFO L276 IsEmpty]: Start isEmpty. Operand 65740 states and 101764 transitions. [2020-10-12 19:12:47,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 19:12:47,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:12:47,768 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] [2020-10-12 19:12:47,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 19:12:47,769 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:12:47,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:12:47,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1032282494, now seen corresponding path program 1 times [2020-10-12 19:12:47,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:12:47,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103254338] [2020-10-12 19:12:47,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:12:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:47,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:47,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:48,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:48,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:48,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:49,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:51,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:51,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:51,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:52,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:52,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 19:12:52,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:12:52,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:12:52,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:52,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 19:12:52,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:12:52,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 19:12:52,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:53,517 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-10-12 19:12:53,784 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2020-10-12 19:12:54,045 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-10-12 19:12:54,555 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 19:12:54,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:12:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:54,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:54,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:54,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:12:54,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:12:54,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:12:54,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:54,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:12:54,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:12:54,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:12:54,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:54,629 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 19:12:54,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103254338] [2020-10-12 19:12:54,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:12:54,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-10-12 19:12:54,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298101087] [2020-10-12 19:12:54,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 19:12:54,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:12:54,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 19:12:54,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2020-10-12 19:12:54,631 INFO L87 Difference]: Start difference. First operand 65740 states and 101764 transitions. Second operand 21 states. [2020-10-12 19:12:54,910 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-12 19:12:55,498 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2020-10-12 19:12:55,697 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2020-10-12 19:12:55,910 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-10-12 19:12:56,072 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-10-12 19:12:56,310 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-12 19:12:57,098 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-10-12 19:12:57,375 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-10-12 19:12:57,743 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-10-12 19:12:58,056 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71