/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_lcr.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:44:46,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:44:46,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:44:46,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:44:46,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:44:46,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:44:46,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:44:46,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:44:46,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:44:46,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:44:46,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:44:46,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:44:46,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:44:46,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:44:46,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:44:46,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:44:46,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:44:46,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:44:46,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:44:46,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:44:46,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:44:46,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:44:46,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:44:46,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:44:46,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:44:46,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:44:46,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:44:46,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:44:46,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:44:46,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:44:46,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:44:46,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:44:46,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:44:46,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:44:46,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:44:46,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:44:46,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:44:46,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:44:46,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:44:46,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:44:46,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:44:46,629 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 19:44:46,686 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:44:46,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:44:46,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:44:46,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:44:46,688 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:44:46,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:44:46,688 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:44:46,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:44:46,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:44:46,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:44:46,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:44:46,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:44:46,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:44:46,689 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:44:46,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:44:46,690 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:44:46,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:44:46,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:44:46,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:44:46,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:44:46,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:44:46,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:44:46,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:44:46,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:44:46,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:44:46,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:44:46,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:44:46,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:44:46,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:44:46,695 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 19:44:46,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:44:47,011 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:44:47,015 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:44:47,016 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:44:47,017 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:44:47,017 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 19:44:47,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ddcd98bc/7956a7cfa5da485db8140d7cb026c365/FLAG84683d7b4 [2020-10-12 19:44:47,600 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:44:47,601 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 19:44:47,618 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ddcd98bc/7956a7cfa5da485db8140d7cb026c365/FLAG84683d7b4 [2020-10-12 19:44:47,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ddcd98bc/7956a7cfa5da485db8140d7cb026c365 [2020-10-12 19:44:47,923 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:44:47,926 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:44:47,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:44:47,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:44:47,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:44:47,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:44:47" (1/1) ... [2020-10-12 19:44:47,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b1be01e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:47, skipping insertion in model container [2020-10-12 19:44:47,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:44:47" (1/1) ... [2020-10-12 19:44:47,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:44:47,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:44:48,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:44:48,377 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:44:48,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:44:48,498 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:44:48,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:48 WrapperNode [2020-10-12 19:44:48,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:44:48,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:44:48,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:44:48,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:44:48,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:48" (1/1) ... [2020-10-12 19:44:48,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:48" (1/1) ... [2020-10-12 19:44:48,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:48" (1/1) ... [2020-10-12 19:44:48,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:48" (1/1) ... [2020-10-12 19:44:48,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:48" (1/1) ... [2020-10-12 19:44:48,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:48" (1/1) ... [2020-10-12 19:44:48,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:48" (1/1) ... [2020-10-12 19:44:48,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:44:48,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:44:48,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:44:48,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:44:48,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:48" (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 19:44:48,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:44:48,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:44:48,634 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:44:48,634 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:44:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:44:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:44:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:44:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:44:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:44:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:44:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:44:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:44:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:44:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:44:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:44:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:44:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:44:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:44:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-12 19:44:48,638 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:44:48,638 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:44:48,639 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:44:48,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:44:48,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:44:49,356 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:44:49,356 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:44:49,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:44:49 BoogieIcfgContainer [2020-10-12 19:44:49,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:44:49,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:44:49,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:44:49,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:44:49,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:44:47" (1/3) ... [2020-10-12 19:44:49,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3de7d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:44:49, skipping insertion in model container [2020-10-12 19:44:49,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:48" (2/3) ... [2020-10-12 19:44:49,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3de7d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:44:49, skipping insertion in model container [2020-10-12 19:44:49,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:44:49" (3/3) ... [2020-10-12 19:44:49,371 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 19:44:49,382 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:44:49,390 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:44:49,406 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:44:49,432 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:44:49,432 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:44:49,432 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:44:49,432 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:44:49,433 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:44:49,433 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:44:49,433 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:44:49,433 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:44:49,456 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-10-12 19:44:49,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 19:44:49,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:49,468 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] [2020-10-12 19:44:49,468 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:49,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:49,475 INFO L82 PathProgramCache]: Analyzing trace with hash -2061210715, now seen corresponding path program 1 times [2020-10-12 19:44:49,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:49,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027019455] [2020-10-12 19:44:49,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:49,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:50,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:50,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:50,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:50,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:52,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:52,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:54,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:54,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 19:44:54,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:44:54,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:44:54,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:54,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:44:54,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:44:54,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 19:44:54,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 19:44:55,245 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:44:55,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:55,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:55,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:55,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:55,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:55,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 19:44:55,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:44:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:44:55,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:44:55,334 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 19:44:55,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027019455] [2020-10-12 19:44:55,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:44:55,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:44:55,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969915314] [2020-10-12 19:44:55,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:44:55,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:55,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:44:55,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:44:55,366 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 9 states. [2020-10-12 19:44:55,800 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 19:44:57,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:44:57,114 INFO L93 Difference]: Finished difference Result 1015 states and 1607 transitions. [2020-10-12 19:44:57,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:44:57,117 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-10-12 19:44:57,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:44:57,143 INFO L225 Difference]: With dead ends: 1015 [2020-10-12 19:44:57,143 INFO L226 Difference]: Without dead ends: 911 [2020-10-12 19:44:57,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:44:57,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-10-12 19:44:57,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 189. [2020-10-12 19:44:57,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-12 19:44:57,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 272 transitions. [2020-10-12 19:44:57,244 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 272 transitions. Word has length 77 [2020-10-12 19:44:57,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:44:57,245 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 272 transitions. [2020-10-12 19:44:57,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:44:57,246 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 272 transitions. [2020-10-12 19:44:57,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 19:44:57,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:57,250 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] [2020-10-12 19:44:57,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:44:57,250 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:57,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:57,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1959766300, now seen corresponding path program 1 times [2020-10-12 19:44:57,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:57,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520119248] [2020-10-12 19:44:57,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:57,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:57,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:57,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:57,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:57,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:57,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:58,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:58,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:02,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:02,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 19:45:02,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:45:02,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-12 19:45:02,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:02,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:45:02,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:45:02,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 19:45:02,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:02,617 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:45:02,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:02,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:02,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:02,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:02,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:02,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:45:02,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:02,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:45:02,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:02,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:45:02,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:45:02,657 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 19:45:02,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520119248] [2020-10-12 19:45:02,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:02,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:45:02,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111736436] [2020-10-12 19:45:02,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:45:02,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:02,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:45:02,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:45:02,662 INFO L87 Difference]: Start difference. First operand 189 states and 272 transitions. Second operand 8 states. [2020-10-12 19:45:02,856 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-12 19:45:03,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:03,756 INFO L93 Difference]: Finished difference Result 927 states and 1433 transitions. [2020-10-12 19:45:03,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 19:45:03,757 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-10-12 19:45:03,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:03,762 INFO L225 Difference]: With dead ends: 927 [2020-10-12 19:45:03,763 INFO L226 Difference]: Without dead ends: 785 [2020-10-12 19:45:03,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:45:03,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-10-12 19:45:03,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 215. [2020-10-12 19:45:03,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-12 19:45:03,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 312 transitions. [2020-10-12 19:45:03,810 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 312 transitions. Word has length 79 [2020-10-12 19:45:03,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:03,812 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 312 transitions. [2020-10-12 19:45:03,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:45:03,812 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 312 transitions. [2020-10-12 19:45:03,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 19:45:03,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:03,819 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] [2020-10-12 19:45:03,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:45:03,819 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:03,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:03,820 INFO L82 PathProgramCache]: Analyzing trace with hash 325117424, now seen corresponding path program 1 times [2020-10-12 19:45:03,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:03,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573575767] [2020-10-12 19:45:03,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:03,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:03,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:03,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:03,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:04,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:04,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:04,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:04,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:08,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:08,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:08,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:08,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 19:45:08,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:45:08,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 19:45:08,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:08,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:45:08,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:45:08,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 19:45:08,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:45:09,208 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:45:09,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:09,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:09,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:09,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:09,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:09,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:45:09,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:09,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:45:09,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:09,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:45:09,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:09,250 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 19:45:09,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573575767] [2020-10-12 19:45:09,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:09,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:45:09,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103711980] [2020-10-12 19:45:09,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:45:09,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:09,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:45:09,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:45:09,254 INFO L87 Difference]: Start difference. First operand 215 states and 312 transitions. Second operand 9 states. [2020-10-12 19:45:09,487 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 19:45:10,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:10,480 INFO L93 Difference]: Finished difference Result 1468 states and 2288 transitions. [2020-10-12 19:45:10,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:45:10,480 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-10-12 19:45:10,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:10,491 INFO L225 Difference]: With dead ends: 1468 [2020-10-12 19:45:10,491 INFO L226 Difference]: Without dead ends: 1326 [2020-10-12 19:45:10,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:45:10,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2020-10-12 19:45:10,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 421. [2020-10-12 19:45:10,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-10-12 19:45:10,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 639 transitions. [2020-10-12 19:45:10,543 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 639 transitions. Word has length 79 [2020-10-12 19:45:10,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:10,545 INFO L479 AbstractCegarLoop]: Abstraction has 421 states and 639 transitions. [2020-10-12 19:45:10,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:45:10,549 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 639 transitions. [2020-10-12 19:45:10,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 19:45:10,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:10,553 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] [2020-10-12 19:45:10,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:45:10,553 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:10,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:10,554 INFO L82 PathProgramCache]: Analyzing trace with hash 348862646, now seen corresponding path program 1 times [2020-10-12 19:45:10,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:10,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966493681] [2020-10-12 19:45:10,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:10,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:10,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:10,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:10,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:10,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:10,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:11,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:14,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:14,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:14,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:15,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:15,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 19:45:15,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:45:15,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:45:15,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:15,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:45:15,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:45:15,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 19:45:15,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 16 [2020-10-12 19:45:15,860 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:45:15,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:15,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:15,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:15,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:15,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:15,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:45:15,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:45:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:45:15,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:45:15,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:45:15,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966493681] [2020-10-12 19:45:15,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:15,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:45:15,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438108886] [2020-10-12 19:45:15,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:45:15,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:15,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:45:15,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:45:15,934 INFO L87 Difference]: Start difference. First operand 421 states and 639 transitions. Second operand 9 states. [2020-10-12 19:45:16,180 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 19:45:16,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:16,970 INFO L93 Difference]: Finished difference Result 1699 states and 2647 transitions. [2020-10-12 19:45:16,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:45:16,970 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-10-12 19:45:16,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:16,979 INFO L225 Difference]: With dead ends: 1699 [2020-10-12 19:45:16,979 INFO L226 Difference]: Without dead ends: 1491 [2020-10-12 19:45:16,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:45:16,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2020-10-12 19:45:17,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 631. [2020-10-12 19:45:17,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2020-10-12 19:45:17,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 973 transitions. [2020-10-12 19:45:17,042 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 973 transitions. Word has length 79 [2020-10-12 19:45:17,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:17,044 INFO L479 AbstractCegarLoop]: Abstraction has 631 states and 973 transitions. [2020-10-12 19:45:17,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:45:17,044 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 973 transitions. [2020-10-12 19:45:17,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 19:45:17,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:17,045 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] [2020-10-12 19:45:17,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:45:17,047 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:17,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:17,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1716714529, now seen corresponding path program 1 times [2020-10-12 19:45:17,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:17,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320603492] [2020-10-12 19:45:17,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:17,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:17,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:17,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:17,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:17,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:17,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:18,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:22,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:22,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 19:45:22,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:45:22,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:45:22,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:22,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:45:22,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:45:22,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 19:45:22,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:22,389 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:45:22,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:22,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:22,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:22,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:22,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:22,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:45:22,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:22,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:45:22,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:22,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:45:22,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:22,435 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 19:45:22,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320603492] [2020-10-12 19:45:22,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:22,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:45:22,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375314076] [2020-10-12 19:45:22,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:45:22,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:22,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:45:22,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:45:22,439 INFO L87 Difference]: Start difference. First operand 631 states and 973 transitions. Second operand 9 states. [2020-10-12 19:45:22,752 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:45:23,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:23,659 INFO L93 Difference]: Finished difference Result 2035 states and 3182 transitions. [2020-10-12 19:45:23,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:45:23,659 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-10-12 19:45:23,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:23,674 INFO L225 Difference]: With dead ends: 2035 [2020-10-12 19:45:23,674 INFO L226 Difference]: Without dead ends: 1477 [2020-10-12 19:45:23,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:45:23,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2020-10-12 19:45:23,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 631. [2020-10-12 19:45:23,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2020-10-12 19:45:23,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 969 transitions. [2020-10-12 19:45:23,769 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 969 transitions. Word has length 79 [2020-10-12 19:45:23,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:23,770 INFO L479 AbstractCegarLoop]: Abstraction has 631 states and 969 transitions. [2020-10-12 19:45:23,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:45:23,770 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 969 transitions. [2020-10-12 19:45:23,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 19:45:23,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:23,778 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] [2020-10-12 19:45:23,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:45:23,782 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:23,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:23,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1736763872, now seen corresponding path program 1 times [2020-10-12 19:45:23,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:23,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930383679] [2020-10-12 19:45:23,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:23,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:23,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:23,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:23,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:24,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:24,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:25,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:25,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:25,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:28,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:28,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 19:45:28,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:45:28,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:45:28,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:28,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:45:28,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:45:28,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 19:45:28,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:28,992 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:45:28,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:29,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:29,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:29,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:29,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:29,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 19:45:29,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:29,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:45:29,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:29,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:45:29,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:29,038 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 19:45:29,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930383679] [2020-10-12 19:45:29,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:29,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:45:29,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943069074] [2020-10-12 19:45:29,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:45:29,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:29,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:45:29,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:45:29,040 INFO L87 Difference]: Start difference. First operand 631 states and 969 transitions. Second operand 6 states. [2020-10-12 19:45:29,237 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 19:45:29,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:29,719 INFO L93 Difference]: Finished difference Result 1189 states and 1851 transitions. [2020-10-12 19:45:29,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:45:29,719 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-10-12 19:45:29,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:29,725 INFO L225 Difference]: With dead ends: 1189 [2020-10-12 19:45:29,725 INFO L226 Difference]: Without dead ends: 608 [2020-10-12 19:45:29,726 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 19:45:29,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-10-12 19:45:29,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 605. [2020-10-12 19:45:29,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-10-12 19:45:29,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 921 transitions. [2020-10-12 19:45:29,801 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 921 transitions. Word has length 79 [2020-10-12 19:45:29,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:29,801 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 921 transitions. [2020-10-12 19:45:29,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:45:29,801 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 921 transitions. [2020-10-12 19:45:29,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 19:45:29,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:29,803 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] [2020-10-12 19:45:29,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:45:29,803 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:29,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:29,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1947886583, now seen corresponding path program 1 times [2020-10-12 19:45:29,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:29,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754612387] [2020-10-12 19:45:29,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:29,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:29,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:29,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:29,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:30,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:30,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:31,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:31,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:34,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:34,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 19:45:34,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:45:34,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:45:34,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:34,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:45:34,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:45:34,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 19:45:34,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:35,054 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:45:35,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:35,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:35,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:35,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:35,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:35,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:45:35,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:35,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:45:35,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:35,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:45:35,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:35,088 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 19:45:35,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754612387] [2020-10-12 19:45:35,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:35,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:45:35,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145526619] [2020-10-12 19:45:35,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:45:35,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:35,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:45:35,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:45:35,090 INFO L87 Difference]: Start difference. First operand 605 states and 921 transitions. Second operand 9 states. [2020-10-12 19:45:35,317 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 19:45:36,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:36,298 INFO L93 Difference]: Finished difference Result 1910 states and 2946 transitions. [2020-10-12 19:45:36,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:45:36,299 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-10-12 19:45:36,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:36,309 INFO L225 Difference]: With dead ends: 1910 [2020-10-12 19:45:36,309 INFO L226 Difference]: Without dead ends: 1702 [2020-10-12 19:45:36,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:45:36,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-12 19:45:36,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 745. [2020-10-12 19:45:36,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 745 states. [2020-10-12 19:45:36,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1141 transitions. [2020-10-12 19:45:36,386 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1141 transitions. Word has length 79 [2020-10-12 19:45:36,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:36,386 INFO L479 AbstractCegarLoop]: Abstraction has 745 states and 1141 transitions. [2020-10-12 19:45:36,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:45:36,387 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1141 transitions. [2020-10-12 19:45:36,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 19:45:36,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:36,388 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] [2020-10-12 19:45:36,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:45:36,388 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:36,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:36,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1724884155, now seen corresponding path program 1 times [2020-10-12 19:45:36,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:36,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46819245] [2020-10-12 19:45:36,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:36,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:36,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:36,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:36,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:36,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:36,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:36,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:37,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:38,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:38,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 19:45:38,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:45:38,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2088 [2020-10-12 19:45:38,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:38,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:45:38,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-12 19:45:38,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 19:45:38,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:38,691 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:45:38,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:38,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:38,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:38,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:38,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:38,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:45:38,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:38,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:45:38,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:38,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:45:38,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:38,719 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 19:45:38,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46819245] [2020-10-12 19:45:38,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:38,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:45:38,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377784980] [2020-10-12 19:45:38,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:45:38,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:38,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:45:38,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:45:38,722 INFO L87 Difference]: Start difference. First operand 745 states and 1141 transitions. Second operand 5 states. [2020-10-12 19:45:39,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:39,563 INFO L93 Difference]: Finished difference Result 1449 states and 2234 transitions. [2020-10-12 19:45:39,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:45:39,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-12 19:45:39,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:39,571 INFO L225 Difference]: With dead ends: 1449 [2020-10-12 19:45:39,572 INFO L226 Difference]: Without dead ends: 1447 [2020-10-12 19:45:39,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 19:45:39,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2020-10-12 19:45:39,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 763. [2020-10-12 19:45:39,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-10-12 19:45:39,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1159 transitions. [2020-10-12 19:45:39,678 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1159 transitions. Word has length 79 [2020-10-12 19:45:39,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:39,679 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 1159 transitions. [2020-10-12 19:45:39,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:45:39,679 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1159 transitions. [2020-10-12 19:45:39,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 19:45:39,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:39,680 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] [2020-10-12 19:45:39,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:45:39,681 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:39,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:39,681 INFO L82 PathProgramCache]: Analyzing trace with hash -35528753, now seen corresponding path program 1 times [2020-10-12 19:45:39,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:39,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863479462] [2020-10-12 19:45:39,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:39,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:39,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:39,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:39,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:39,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:39,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:40,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:40,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:44,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:44,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 19:45:44,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:45:44,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:45:44,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:44,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:45:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:45:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 19:45:44,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:44,906 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:45:44,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:44,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:44,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:44,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:44,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:44,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:45:44,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:44,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:45:44,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:44,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:45:44,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:44,938 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 19:45:44,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863479462] [2020-10-12 19:45:44,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:44,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:45:44,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567632254] [2020-10-12 19:45:44,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:45:44,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:44,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:45:44,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:45:44,940 INFO L87 Difference]: Start difference. First operand 763 states and 1159 transitions. Second operand 9 states. [2020-10-12 19:45:45,163 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 19:45:46,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:46,291 INFO L93 Difference]: Finished difference Result 2115 states and 3243 transitions. [2020-10-12 19:45:46,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:45:46,291 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-10-12 19:45:46,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:46,301 INFO L225 Difference]: With dead ends: 2115 [2020-10-12 19:45:46,301 INFO L226 Difference]: Without dead ends: 1903 [2020-10-12 19:45:46,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:45:46,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2020-10-12 19:45:46,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 907. [2020-10-12 19:45:46,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 907 states. [2020-10-12 19:45:46,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1383 transitions. [2020-10-12 19:45:46,425 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1383 transitions. Word has length 79 [2020-10-12 19:45:46,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:46,426 INFO L479 AbstractCegarLoop]: Abstraction has 907 states and 1383 transitions. [2020-10-12 19:45:46,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:45:46,426 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1383 transitions. [2020-10-12 19:45:46,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 19:45:46,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:46,427 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] [2020-10-12 19:45:46,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:45:46,428 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:46,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:46,428 INFO L82 PathProgramCache]: Analyzing trace with hash 658726851, now seen corresponding path program 1 times [2020-10-12 19:45:46,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:46,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672884577] [2020-10-12 19:45:46,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:46,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:46,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:46,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:46,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:46,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:46,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:47,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:47,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:51,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:51,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 19:45:51,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:45:51,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:45:51,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:51,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:45:51,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:45:51,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 19:45:51,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:51,652 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:45:51,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:51,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:51,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:51,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:51,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:51,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:45:51,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:51,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:45:51,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:51,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:45:51,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:51,679 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 19:45:51,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672884577] [2020-10-12 19:45:51,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:51,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:45:51,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606575291] [2020-10-12 19:45:51,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:45:51,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:51,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:45:51,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:45:51,681 INFO L87 Difference]: Start difference. First operand 907 states and 1383 transitions. Second operand 9 states. [2020-10-12 19:45:51,894 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 19:45:53,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:53,034 INFO L93 Difference]: Finished difference Result 2302 states and 3534 transitions. [2020-10-12 19:45:53,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:45:53,034 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-10-12 19:45:53,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:53,043 INFO L225 Difference]: With dead ends: 2302 [2020-10-12 19:45:53,043 INFO L226 Difference]: Without dead ends: 2090 [2020-10-12 19:45:53,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:45:53,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2020-10-12 19:45:53,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1051. [2020-10-12 19:45:53,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2020-10-12 19:45:53,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1607 transitions. [2020-10-12 19:45:53,196 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1607 transitions. Word has length 79 [2020-10-12 19:45:53,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:53,196 INFO L479 AbstractCegarLoop]: Abstraction has 1051 states and 1607 transitions. [2020-10-12 19:45:53,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:45:53,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1607 transitions. [2020-10-12 19:45:53,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:45:53,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:53,198 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] [2020-10-12 19:45:53,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:45:53,198 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:53,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:53,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1922181442, now seen corresponding path program 1 times [2020-10-12 19:45:53,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:53,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207991328] [2020-10-12 19:45:53,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:53,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:53,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:53,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:53,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:53,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:53,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:53,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:54,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:54,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:45:54,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:45:54,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1192 [2020-10-12 19:45:54,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:54,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:45:54,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 19:45:54,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 19:45:54,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:54,575 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:45:54,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:54,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:54,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:54,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:54,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:54,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:45:54,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:54,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:45:54,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:54,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:45:54,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:54,602 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 19:45:54,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207991328] [2020-10-12 19:45:54,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:54,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 19:45:54,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743776952] [2020-10-12 19:45:54,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 19:45:54,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:54,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 19:45:54,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 19:45:54,604 INFO L87 Difference]: Start difference. First operand 1051 states and 1607 transitions. Second operand 4 states. [2020-10-12 19:45:54,787 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-12 19:45:55,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:55,414 INFO L93 Difference]: Finished difference Result 2958 states and 4565 transitions. [2020-10-12 19:45:55,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:45:55,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-12 19:45:55,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:55,421 INFO L225 Difference]: With dead ends: 2958 [2020-10-12 19:45:55,421 INFO L226 Difference]: Without dead ends: 1954 [2020-10-12 19:45:55,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:45:55,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-12 19:45:55,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1938. [2020-10-12 19:45:55,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1938 states. [2020-10-12 19:45:55,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1938 states to 1938 states and 2956 transitions. [2020-10-12 19:45:55,709 INFO L78 Accepts]: Start accepts. Automaton has 1938 states and 2956 transitions. Word has length 80 [2020-10-12 19:45:55,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:55,709 INFO L479 AbstractCegarLoop]: Abstraction has 1938 states and 2956 transitions. [2020-10-12 19:45:55,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 19:45:55,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1938 states and 2956 transitions. [2020-10-12 19:45:55,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:45:55,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:55,712 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] [2020-10-12 19:45:55,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:45:55,712 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:55,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:55,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1704621502, now seen corresponding path program 1 times [2020-10-12 19:45:55,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:55,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850015790] [2020-10-12 19:45:55,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:55,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:55,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:55,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:55,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:55,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:56,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:56,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:58,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:58,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:00,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:00,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:46:00,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:46:00,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:46:00,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:00,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:46:00,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 19:46:00,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 19:46:00,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:00,955 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:46:00,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:00,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:00,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:00,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:00,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:00,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:46:00,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:00,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:46:00,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:00,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:46:00,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:00,982 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 19:46:00,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850015790] [2020-10-12 19:46:00,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:46:00,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:46:00,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387757709] [2020-10-12 19:46:00,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:46:00,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:00,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:46:00,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:46:00,988 INFO L87 Difference]: Start difference. First operand 1938 states and 2956 transitions. Second operand 9 states. [2020-10-12 19:46:01,212 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 19:46:02,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:46:02,575 INFO L93 Difference]: Finished difference Result 4117 states and 6310 transitions. [2020-10-12 19:46:02,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:46:02,576 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2020-10-12 19:46:02,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:46:02,588 INFO L225 Difference]: With dead ends: 4117 [2020-10-12 19:46:02,588 INFO L226 Difference]: Without dead ends: 3905 [2020-10-12 19:46:02,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:46:02,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3905 states. [2020-10-12 19:46:02,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3905 to 2082. [2020-10-12 19:46:02,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2082 states. [2020-10-12 19:46:02,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 3180 transitions. [2020-10-12 19:46:02,871 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 3180 transitions. Word has length 80 [2020-10-12 19:46:02,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:46:02,871 INFO L479 AbstractCegarLoop]: Abstraction has 2082 states and 3180 transitions. [2020-10-12 19:46:02,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:46:02,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 3180 transitions. [2020-10-12 19:46:02,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 19:46:02,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:02,874 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] [2020-10-12 19:46:02,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:46:02,874 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:02,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:02,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1855425876, now seen corresponding path program 1 times [2020-10-12 19:46:02,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:02,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026576298] [2020-10-12 19:46:02,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:02,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:02,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:02,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:02,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:03,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:03,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:03,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:03,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:03,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:04,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:07,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:07,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 19:46:07,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:46:07,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:46:07,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:07,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:46:07,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 19:46:07,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 19:46:07,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:08,085 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:46:08,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:08,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:08,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:08,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:08,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:08,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:46:08,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:08,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:46:08,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:08,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:46:08,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:08,106 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 19:46:08,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026576298] [2020-10-12 19:46:08,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:46:08,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:46:08,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592835074] [2020-10-12 19:46:08,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:46:08,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:08,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:46:08,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:46:08,108 INFO L87 Difference]: Start difference. First operand 2082 states and 3180 transitions. Second operand 8 states. [2020-10-12 19:46:09,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:46:09,558 INFO L93 Difference]: Finished difference Result 4947 states and 7545 transitions. [2020-10-12 19:46:09,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 19:46:09,558 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-10-12 19:46:09,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:46:09,574 INFO L225 Difference]: With dead ends: 4947 [2020-10-12 19:46:09,574 INFO L226 Difference]: Without dead ends: 4547 [2020-10-12 19:46:09,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:46:09,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4547 states. [2020-10-12 19:46:09,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4547 to 2222. [2020-10-12 19:46:09,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2222 states. [2020-10-12 19:46:09,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 3403 transitions. [2020-10-12 19:46:09,906 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 3403 transitions. Word has length 81 [2020-10-12 19:46:09,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:46:09,907 INFO L479 AbstractCegarLoop]: Abstraction has 2222 states and 3403 transitions. [2020-10-12 19:46:09,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:46:09,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 3403 transitions. [2020-10-12 19:46:09,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 19:46:09,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:09,908 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] [2020-10-12 19:46:09,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:46:09,909 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:09,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:09,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1879171098, now seen corresponding path program 1 times [2020-10-12 19:46:09,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:09,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050993375] [2020-10-12 19:46:09,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:09,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:09,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:09,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:10,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:10,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:10,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:10,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:10,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:11,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:11,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:14,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:14,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 19:46:14,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:46:14,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:46:14,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:14,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:46:14,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 19:46:14,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 19:46:14,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:15,132 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:46:15,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:15,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:15,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:15,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:15,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:15,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:46:15,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:15,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:46:15,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:15,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:46:15,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:15,156 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 19:46:15,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050993375] [2020-10-12 19:46:15,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:46:15,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:46:15,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686806979] [2020-10-12 19:46:15,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:46:15,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:15,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:46:15,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:46:15,158 INFO L87 Difference]: Start difference. First operand 2222 states and 3403 transitions. Second operand 8 states. [2020-10-12 19:46:16,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:46:16,646 INFO L93 Difference]: Finished difference Result 4971 states and 7577 transitions. [2020-10-12 19:46:16,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 19:46:16,647 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-10-12 19:46:16,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:46:16,659 INFO L225 Difference]: With dead ends: 4971 [2020-10-12 19:46:16,659 INFO L226 Difference]: Without dead ends: 4571 [2020-10-12 19:46:16,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:46:16,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4571 states. [2020-10-12 19:46:16,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4571 to 2262. [2020-10-12 19:46:16,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2262 states. [2020-10-12 19:46:16,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 3463 transitions. [2020-10-12 19:46:16,946 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 3463 transitions. Word has length 81 [2020-10-12 19:46:16,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:46:16,947 INFO L479 AbstractCegarLoop]: Abstraction has 2262 states and 3463 transitions. [2020-10-12 19:46:16,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:46:16,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 3463 transitions. [2020-10-12 19:46:16,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 19:46:16,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:16,950 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] [2020-10-12 19:46:16,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:46:16,950 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:16,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:16,950 INFO L82 PathProgramCache]: Analyzing trace with hash -186406077, now seen corresponding path program 1 times [2020-10-12 19:46:16,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:16,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130541308] [2020-10-12 19:46:16,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:16,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:16,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:17,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:17,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:17,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:17,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:17,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:20,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:20,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 19:46:20,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:46:20,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3147 [2020-10-12 19:46:20,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:20,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:46:20,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:46:20,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 19:46:20,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:20,364 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:46:20,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:20,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:20,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:20,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:20,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:20,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:46:20,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:20,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:46:20,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:20,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:46:20,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:20,422 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 19:46:20,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130541308] [2020-10-12 19:46:20,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:46:20,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:46:20,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295523662] [2020-10-12 19:46:20,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:46:20,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:20,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:46:20,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:46:20,424 INFO L87 Difference]: Start difference. First operand 2262 states and 3463 transitions. Second operand 7 states. [2020-10-12 19:46:20,601 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-12 19:46:21,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:46:21,876 INFO L93 Difference]: Finished difference Result 7046 states and 10815 transitions. [2020-10-12 19:46:21,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:46:21,876 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 81 [2020-10-12 19:46:21,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:46:21,887 INFO L225 Difference]: With dead ends: 7046 [2020-10-12 19:46:21,887 INFO L226 Difference]: Without dead ends: 4895 [2020-10-12 19:46:21,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:46:21,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4895 states. [2020-10-12 19:46:22,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4895 to 2146. [2020-10-12 19:46:22,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2146 states. [2020-10-12 19:46:22,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2146 states to 2146 states and 3273 transitions. [2020-10-12 19:46:22,242 INFO L78 Accepts]: Start accepts. Automaton has 2146 states and 3273 transitions. Word has length 81 [2020-10-12 19:46:22,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:46:22,242 INFO L479 AbstractCegarLoop]: Abstraction has 2146 states and 3273 transitions. [2020-10-12 19:46:22,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:46:22,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2146 states and 3273 transitions. [2020-10-12 19:46:22,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 19:46:22,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:22,245 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] [2020-10-12 19:46:22,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 19:46:22,245 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:22,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:22,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1370825690, now seen corresponding path program 1 times [2020-10-12 19:46:22,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:22,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421795834] [2020-10-12 19:46:22,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:22,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:22,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:22,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:22,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:22,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:22,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:22,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:22,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:23,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:24,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:27,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:27,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 19:46:27,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:46:27,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4934 [2020-10-12 19:46:27,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:27,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:46:27,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-12 19:46:27,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 19:46:27,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:27,404 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:46:27,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:27,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:27,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:27,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:27,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:27,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:46:27,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:27,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:46:27,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:27,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:46:27,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:27,424 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 19:46:27,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421795834] [2020-10-12 19:46:27,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:46:27,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:46:27,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557111831] [2020-10-12 19:46:27,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:46:27,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:27,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:46:27,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:46:27,425 INFO L87 Difference]: Start difference. First operand 2146 states and 3273 transitions. Second operand 8 states. [2020-10-12 19:46:28,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:46:28,680 INFO L93 Difference]: Finished difference Result 4694 states and 7136 transitions. [2020-10-12 19:46:28,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 19:46:28,681 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-10-12 19:46:28,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:46:28,690 INFO L225 Difference]: With dead ends: 4694 [2020-10-12 19:46:28,690 INFO L226 Difference]: Without dead ends: 4294 [2020-10-12 19:46:28,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:46:28,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4294 states. [2020-10-12 19:46:29,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4294 to 2308. [2020-10-12 19:46:29,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2308 states. [2020-10-12 19:46:29,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 3531 transitions. [2020-10-12 19:46:29,068 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 3531 transitions. Word has length 81 [2020-10-12 19:46:29,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:46:29,068 INFO L479 AbstractCegarLoop]: Abstraction has 2308 states and 3531 transitions. [2020-10-12 19:46:29,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:46:29,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 3531 transitions. [2020-10-12 19:46:29,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 19:46:29,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:29,070 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] [2020-10-12 19:46:29,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 19:46:29,070 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:29,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:29,070 INFO L82 PathProgramCache]: Analyzing trace with hash 858564431, now seen corresponding path program 1 times [2020-10-12 19:46:29,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:29,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801091850] [2020-10-12 19:46:29,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:29,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:29,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:29,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:29,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:29,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:29,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:29,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:31,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:31,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 19:46:31,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:46:31,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2847 [2020-10-12 19:46:31,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:31,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:46:31,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:46:31,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 19:46:31,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:32,175 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:46:32,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:32,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:32,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:32,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:32,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:32,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:46:32,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:32,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:46:32,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:32,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:46:32,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:32,229 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 19:46:32,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801091850] [2020-10-12 19:46:32,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:46:32,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:46:32,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221819922] [2020-10-12 19:46:32,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:46:32,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:32,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:46:32,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:46:32,232 INFO L87 Difference]: Start difference. First operand 2308 states and 3531 transitions. Second operand 7 states. [2020-10-12 19:46:32,397 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-12 19:46:33,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:46:33,595 INFO L93 Difference]: Finished difference Result 6504 states and 9941 transitions. [2020-10-12 19:46:33,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:46:33,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 81 [2020-10-12 19:46:33,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:46:33,605 INFO L225 Difference]: With dead ends: 6504 [2020-10-12 19:46:33,606 INFO L226 Difference]: Without dead ends: 4427 [2020-10-12 19:46:33,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:46:33,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4427 states. [2020-10-12 19:46:34,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4427 to 2266. [2020-10-12 19:46:34,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2266 states. [2020-10-12 19:46:34,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2266 states to 2266 states and 3450 transitions. [2020-10-12 19:46:34,060 INFO L78 Accepts]: Start accepts. Automaton has 2266 states and 3450 transitions. Word has length 81 [2020-10-12 19:46:34,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:46:34,060 INFO L479 AbstractCegarLoop]: Abstraction has 2266 states and 3450 transitions. [2020-10-12 19:46:34,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:46:34,061 INFO L276 IsEmpty]: Start isEmpty. Operand 2266 states and 3450 transitions. [2020-10-12 19:46:34,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 19:46:34,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:34,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:46:34,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 19:46:34,062 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:34,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:34,063 INFO L82 PathProgramCache]: Analyzing trace with hash -2092081003, now seen corresponding path program 1 times [2020-10-12 19:46:34,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:34,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121585395] [2020-10-12 19:46:34,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:34,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:34,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:34,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:34,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:34,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:34,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:34,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:36,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:36,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 19:46:36,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:46:36,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2695 [2020-10-12 19:46:36,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:36,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:46:36,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:46:36,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 19:46:36,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:37,012 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:46:37,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:37,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:37,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:37,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:37,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:37,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:46:37,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:37,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:46:37,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:37,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:46:37,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:37,048 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 19:46:37,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121585395] [2020-10-12 19:46:37,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:46:37,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:46:37,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565972331] [2020-10-12 19:46:37,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:46:37,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:37,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:46:37,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:46:37,049 INFO L87 Difference]: Start difference. First operand 2266 states and 3450 transitions. Second operand 7 states. [2020-10-12 19:46:37,219 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-12 19:46:38,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:46:38,494 INFO L93 Difference]: Finished difference Result 6234 states and 9488 transitions. [2020-10-12 19:46:38,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:46:38,495 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 81 [2020-10-12 19:46:38,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:46:38,507 INFO L225 Difference]: With dead ends: 6234 [2020-10-12 19:46:38,508 INFO L226 Difference]: Without dead ends: 4199 [2020-10-12 19:46:38,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:46:38,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4199 states. [2020-10-12 19:46:38,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4199 to 2338. [2020-10-12 19:46:38,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2338 states. [2020-10-12 19:46:38,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 3549 transitions. [2020-10-12 19:46:38,880 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 3549 transitions. Word has length 81 [2020-10-12 19:46:38,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:46:38,880 INFO L479 AbstractCegarLoop]: Abstraction has 2338 states and 3549 transitions. [2020-10-12 19:46:38,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:46:38,880 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 3549 transitions. [2020-10-12 19:46:38,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 19:46:38,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:38,882 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] [2020-10-12 19:46:38,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 19:46:38,882 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:38,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:38,882 INFO L82 PathProgramCache]: Analyzing trace with hash -656534135, now seen corresponding path program 1 times [2020-10-12 19:46:38,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:38,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809916896] [2020-10-12 19:46:38,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:38,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:38,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:38,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:38,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:39,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:39,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:39,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:41,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:41,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 19:46:41,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:46:41,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2745 [2020-10-12 19:46:41,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:41,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:46:41,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:46:41,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 19:46:41,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:41,888 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:46:41,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:41,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:41,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:41,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:41,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:41,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:46:41,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:41,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:46:41,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:41,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:46:41,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:41,926 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 19:46:41,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809916896] [2020-10-12 19:46:41,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:46:41,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:46:41,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607453344] [2020-10-12 19:46:41,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:46:41,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:41,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:46:41,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:46:41,931 INFO L87 Difference]: Start difference. First operand 2338 states and 3549 transitions. Second operand 7 states. [2020-10-12 19:46:42,114 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-12 19:46:43,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:46:43,448 INFO L93 Difference]: Finished difference Result 6870 states and 10481 transitions. [2020-10-12 19:46:43,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:46:43,448 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 81 [2020-10-12 19:46:43,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:46:43,453 INFO L225 Difference]: With dead ends: 6870 [2020-10-12 19:46:43,453 INFO L226 Difference]: Without dead ends: 4715 [2020-10-12 19:46:43,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:46:43,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4715 states. [2020-10-12 19:46:43,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4715 to 2290. [2020-10-12 19:46:43,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2290 states. [2020-10-12 19:46:43,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2290 states to 2290 states and 3471 transitions. [2020-10-12 19:46:43,867 INFO L78 Accepts]: Start accepts. Automaton has 2290 states and 3471 transitions. Word has length 81 [2020-10-12 19:46:43,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:46:43,867 INFO L479 AbstractCegarLoop]: Abstraction has 2290 states and 3471 transitions. [2020-10-12 19:46:43,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:46:43,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2290 states and 3471 transitions. [2020-10-12 19:46:43,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 19:46:43,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:43,868 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] [2020-10-12 19:46:43,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 19:46:43,869 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:43,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:43,869 INFO L82 PathProgramCache]: Analyzing trace with hash 803170429, now seen corresponding path program 1 times [2020-10-12 19:46:43,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:43,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108860067] [2020-10-12 19:46:43,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:43,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:43,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:43,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:43,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:44,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:44,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:44,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:46,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:46,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 19:46:46,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:46:46,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3059 [2020-10-12 19:46:46,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:46,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:46:46,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:46:46,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 19:46:46,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:47,181 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:46:47,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:47,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:47,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:47,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:47,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:47,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:46:47,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:47,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:46:47,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:47,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:46:47,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:47,230 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 19:46:47,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108860067] [2020-10-12 19:46:47,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:46:47,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:46:47,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098623032] [2020-10-12 19:46:47,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:46:47,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:47,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:46:47,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:46:47,232 INFO L87 Difference]: Start difference. First operand 2290 states and 3471 transitions. Second operand 7 states. [2020-10-12 19:46:47,409 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-12 19:46:48,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:46:48,775 INFO L93 Difference]: Finished difference Result 7434 states and 11381 transitions. [2020-10-12 19:46:48,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:46:48,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 81 [2020-10-12 19:46:48,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:46:48,780 INFO L225 Difference]: With dead ends: 7434 [2020-10-12 19:46:48,780 INFO L226 Difference]: Without dead ends: 5225 [2020-10-12 19:46:48,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:46:48,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5225 states. [2020-10-12 19:46:49,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5225 to 2200. [2020-10-12 19:46:49,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-10-12 19:46:49,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 3342 transitions. [2020-10-12 19:46:49,152 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 3342 transitions. Word has length 81 [2020-10-12 19:46:49,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:46:49,152 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 3342 transitions. [2020-10-12 19:46:49,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:46:49,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 3342 transitions. [2020-10-12 19:46:49,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 19:46:49,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:49,153 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] [2020-10-12 19:46:49,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 19:46:49,154 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:49,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:49,154 INFO L82 PathProgramCache]: Analyzing trace with hash -54926307, now seen corresponding path program 1 times [2020-10-12 19:46:49,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:49,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351197705] [2020-10-12 19:46:49,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:49,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:49,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:49,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:49,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:49,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:49,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:49,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:50,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:52,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:52,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 19:46:52,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:46:52,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3173 [2020-10-12 19:46:52,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:52,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:46:52,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 19:46:52,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 19:46:52,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:52,530 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:46:52,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:52,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:52,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:52,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:52,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:52,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:46:52,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:52,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:46:52,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:52,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:46:52,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:52,557 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 19:46:52,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351197705] [2020-10-12 19:46:52,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:46:52,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:46:52,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181541422] [2020-10-12 19:46:52,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:46:52,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:52,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:46:52,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:46:52,559 INFO L87 Difference]: Start difference. First operand 2200 states and 3342 transitions. Second operand 5 states. [2020-10-12 19:46:52,758 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:46:53,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:46:53,942 INFO L93 Difference]: Finished difference Result 4453 states and 6838 transitions. [2020-10-12 19:46:53,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:46:53,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-12 19:46:53,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:46:53,945 INFO L225 Difference]: With dead ends: 4453 [2020-10-12 19:46:53,945 INFO L226 Difference]: Without dead ends: 3305 [2020-10-12 19:46:53,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:46:53,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3305 states. [2020-10-12 19:46:54,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3305 to 3285. [2020-10-12 19:46:54,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3285 states. [2020-10-12 19:46:54,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3285 states to 3285 states and 4997 transitions. [2020-10-12 19:46:54,411 INFO L78 Accepts]: Start accepts. Automaton has 3285 states and 4997 transitions. Word has length 81 [2020-10-12 19:46:54,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:46:54,411 INFO L479 AbstractCegarLoop]: Abstraction has 3285 states and 4997 transitions. [2020-10-12 19:46:54,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:46:54,411 INFO L276 IsEmpty]: Start isEmpty. Operand 3285 states and 4997 transitions. [2020-10-12 19:46:54,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 19:46:54,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:54,412 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] [2020-10-12 19:46:54,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 19:46:54,412 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:54,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:54,412 INFO L82 PathProgramCache]: Analyzing trace with hash 885582776, now seen corresponding path program 1 times [2020-10-12 19:46:54,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:54,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725760498] [2020-10-12 19:46:54,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:54,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:54,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:54,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:54,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:54,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:54,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:55,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:55,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:59,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:59,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 19:46:59,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:46:59,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:46:59,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:59,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:46:59,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:46:59,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 19:46:59,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:59,609 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:46:59,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:59,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:59,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:59,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:59,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:59,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:46:59,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:59,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:46:59,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:59,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:46:59,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:59,637 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 19:46:59,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725760498] [2020-10-12 19:46:59,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:46:59,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:46:59,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385287010] [2020-10-12 19:46:59,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:46:59,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:59,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:46:59,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:46:59,638 INFO L87 Difference]: Start difference. First operand 3285 states and 4997 transitions. Second operand 7 states. [2020-10-12 19:46:59,820 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-12 19:47:01,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:47:01,451 INFO L93 Difference]: Finished difference Result 8885 states and 13682 transitions. [2020-10-12 19:47:01,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:47:01,454 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-10-12 19:47:01,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:47:01,461 INFO L225 Difference]: With dead ends: 8885 [2020-10-12 19:47:01,461 INFO L226 Difference]: Without dead ends: 6651 [2020-10-12 19:47:01,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:47:01,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6651 states. [2020-10-12 19:47:01,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6651 to 3249. [2020-10-12 19:47:01,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3249 states. [2020-10-12 19:47:01,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3249 states to 3249 states and 4946 transitions. [2020-10-12 19:47:01,968 INFO L78 Accepts]: Start accepts. Automaton has 3249 states and 4946 transitions. Word has length 82 [2020-10-12 19:47:01,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:47:01,968 INFO L479 AbstractCegarLoop]: Abstraction has 3249 states and 4946 transitions. [2020-10-12 19:47:01,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:47:01,968 INFO L276 IsEmpty]: Start isEmpty. Operand 3249 states and 4946 transitions. [2020-10-12 19:47:01,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 19:47:01,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:47:01,971 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:01,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 19:47:01,971 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:47:01,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:47:01,972 INFO L82 PathProgramCache]: Analyzing trace with hash -622215398, now seen corresponding path program 1 times [2020-10-12 19:47:01,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:47:01,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050977325] [2020-10-12 19:47:01,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:47:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:02,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:02,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:02,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:02,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:02,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:02,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:02,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:02,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:02,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:02,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:02,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:02,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:06,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:06,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 19:47:06,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:47:06,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:47:06,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:06,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:47:06,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:47:06,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 19:47:06,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:07,292 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:47:07,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:47:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:07,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:07,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:07,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:47:07,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:47:07,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:47:07,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:07,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:47:07,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:47:07,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:47:07,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:47:07,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050977325] [2020-10-12 19:47:07,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 19:47:07,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 19:47:07,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768828691] [2020-10-12 19:47:07,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:47:07,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:47:07,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:47:07,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:47:07,338 INFO L87 Difference]: Start difference. First operand 3249 states and 4946 transitions. Second operand 11 states. [2020-10-12 19:47:07,576 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 19:47:15,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:47:15,196 INFO L93 Difference]: Finished difference Result 32540 states and 49832 transitions. [2020-10-12 19:47:15,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 19:47:15,196 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 113 [2020-10-12 19:47:15,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:47:15,224 INFO L225 Difference]: With dead ends: 32540 [2020-10-12 19:47:15,225 INFO L226 Difference]: Without dead ends: 29420 [2020-10-12 19:47:15,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=350, Invalid=982, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 19:47:15,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29420 states. [2020-10-12 19:47:16,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29420 to 8938. [2020-10-12 19:47:16,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8938 states. [2020-10-12 19:47:16,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8938 states to 8938 states and 13538 transitions. [2020-10-12 19:47:16,908 INFO L78 Accepts]: Start accepts. Automaton has 8938 states and 13538 transitions. Word has length 113 [2020-10-12 19:47:16,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:47:16,909 INFO L479 AbstractCegarLoop]: Abstraction has 8938 states and 13538 transitions. [2020-10-12 19:47:16,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:47:16,909 INFO L276 IsEmpty]: Start isEmpty. Operand 8938 states and 13538 transitions. [2020-10-12 19:47:16,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 19:47:16,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:47:16,913 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:16,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 19:47:16,913 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:47:16,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:47:16,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1917522616, now seen corresponding path program 1 times [2020-10-12 19:47:16,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:47:16,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319218300] [2020-10-12 19:47:16,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:47:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:16,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:16,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:16,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:17,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:17,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:17,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:17,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:17,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:17,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:21,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:21,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:21,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:21,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:21,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:21,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 19:47:21,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:47:21,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:47:21,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:21,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:47:21,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:47:21,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 19:47:21,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:22,344 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:47:22,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:47:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:22,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:22,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:22,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:47:22,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:47:22,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:47:22,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:22,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:47:22,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:47:22,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:47:22,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:22,380 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:47:22,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319218300] [2020-10-12 19:47:22,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 19:47:22,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 19:47:22,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431720266] [2020-10-12 19:47:22,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:47:22,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:47:22,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:47:22,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:47:22,381 INFO L87 Difference]: Start difference. First operand 8938 states and 13538 transitions. Second operand 10 states. [2020-10-12 19:47:22,577 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-12 19:47:30,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:47:30,469 INFO L93 Difference]: Finished difference Result 32462 states and 49674 transitions. [2020-10-12 19:47:30,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 19:47:30,470 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 113 [2020-10-12 19:47:30,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:47:30,496 INFO L225 Difference]: With dead ends: 32462 [2020-10-12 19:47:30,497 INFO L226 Difference]: Without dead ends: 29608 [2020-10-12 19:47:30,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-10-12 19:47:30,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29608 states. [2020-10-12 19:47:32,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29608 to 9182. [2020-10-12 19:47:32,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9182 states. [2020-10-12 19:47:32,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9182 states to 9182 states and 13904 transitions. [2020-10-12 19:47:32,361 INFO L78 Accepts]: Start accepts. Automaton has 9182 states and 13904 transitions. Word has length 113 [2020-10-12 19:47:32,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:47:32,361 INFO L479 AbstractCegarLoop]: Abstraction has 9182 states and 13904 transitions. [2020-10-12 19:47:32,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:47:32,361 INFO L276 IsEmpty]: Start isEmpty. Operand 9182 states and 13904 transitions. [2020-10-12 19:47:32,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 19:47:32,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:47:32,364 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:32,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 19:47:32,365 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:47:32,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:47:32,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1537952135, now seen corresponding path program 1 times [2020-10-12 19:47:32,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:47:32,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116201128] [2020-10-12 19:47:32,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:47:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:32,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:32,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:32,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:32,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:32,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:32,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:32,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:32,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:32,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:37,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:37,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 19:47:37,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:47:37,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:47:37,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:37,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:47:37,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-12 19:47:37,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 19:47:37,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:37,569 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:47:37,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:47:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:37,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:37,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:37,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:47:37,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:47:37,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:47:37,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:37,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:47:37,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:47:37,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:47:37,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:37,591 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:47:37,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116201128] [2020-10-12 19:47:37,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 19:47:37,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 19:47:37,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625030044] [2020-10-12 19:47:37,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:47:37,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:47:37,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:47:37,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:47:37,593 INFO L87 Difference]: Start difference. First operand 9182 states and 13904 transitions. Second operand 6 states. [2020-10-12 19:47:48,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:47:48,355 INFO L93 Difference]: Finished difference Result 52982 states and 80388 transitions. [2020-10-12 19:47:48,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 19:47:48,356 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-10-12 19:47:48,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:47:48,394 INFO L225 Difference]: With dead ends: 52982 [2020-10-12 19:47:48,394 INFO L226 Difference]: Without dead ends: 43878 [2020-10-12 19:47:48,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:47:48,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43878 states. [2020-10-12 19:47:52,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43878 to 19010. [2020-10-12 19:47:52,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19010 states. [2020-10-12 19:47:52,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19010 states to 19010 states and 28440 transitions. [2020-10-12 19:47:52,285 INFO L78 Accepts]: Start accepts. Automaton has 19010 states and 28440 transitions. Word has length 114 [2020-10-12 19:47:52,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:47:52,285 INFO L479 AbstractCegarLoop]: Abstraction has 19010 states and 28440 transitions. [2020-10-12 19:47:52,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:47:52,285 INFO L276 IsEmpty]: Start isEmpty. Operand 19010 states and 28440 transitions. [2020-10-12 19:47:52,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 19:47:52,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:47:52,290 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:52,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 19:47:52,291 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:47:52,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:47:52,291 INFO L82 PathProgramCache]: Analyzing trace with hash -469236405, now seen corresponding path program 1 times [2020-10-12 19:47:52,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:47:52,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942578058] [2020-10-12 19:47:52,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:47:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:52,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:52,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:52,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:52,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:52,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:52,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:52,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:52,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:55,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:55,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:55,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:55,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:56,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:57,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:57,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 19:47:57,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:47:57,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:47:57,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:57,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:47:57,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:47:57,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 19:47:57,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:57,516 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:47:57,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:47:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:57,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:57,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:57,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:47:57,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:47:57,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:47:57,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:57,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:47:57,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:47:57,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:47:57,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:47:57,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942578058] [2020-10-12 19:47:57,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 19:47:57,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 19:47:57,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241455584] [2020-10-12 19:47:57,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:47:57,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:47:57,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:47:57,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:47:57,547 INFO L87 Difference]: Start difference. First operand 19010 states and 28440 transitions. Second operand 9 states. [2020-10-12 19:47:57,724 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-12 19:48:31,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:48:31,370 INFO L93 Difference]: Finished difference Result 167211 states and 249822 transitions. [2020-10-12 19:48:31,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 19:48:31,370 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 114 [2020-10-12 19:48:31,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:48:31,524 INFO L225 Difference]: With dead ends: 167211 [2020-10-12 19:48:31,524 INFO L226 Difference]: Without dead ends: 148369 [2020-10-12 19:48:31,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2020-10-12 19:48:31,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148369 states.