/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-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:00:44,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:00:44,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:00:44,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:00:44,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:00:44,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:00:44,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:00:44,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:00:44,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:00:44,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:00:44,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:00:44,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:00:44,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:00:44,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:00:44,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:00:44,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:00:44,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:00:44,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:00:44,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:00:44,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:00:44,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:00:44,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:00:44,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:00:44,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:00:44,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:00:44,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:00:44,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:00:44,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:00:44,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:00:44,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:00:44,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:00:44,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:00:44,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:00:44,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:00:44,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:00:44,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:00:44,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:00:44,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:00:44,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:00:44,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:00:44,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:00:44,527 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 20:00:44,562 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:00:44,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:00:44,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:00:44,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:00:44,563 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:00:44,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:00:44,564 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:00:44,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:00:44,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:00:44,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:00:44,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:00:44,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:00:44,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:00:44,565 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:00:44,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:00:44,565 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:00:44,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:00:44,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:00:44,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:00:44,566 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:00:44,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:00:44,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:00:44,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:00:44,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:00:44,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:00:44,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:00:44,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:00:44,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:00:44,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:00:44,568 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:00:44,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:00:44,873 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:00:44,876 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:00:44,878 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:00:44,878 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:00:44,879 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-12 20:00:44,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ab5a4be0/7206922a429f41fc91c0fc4c463fad3d/FLAGaaa8c1e07 [2020-10-12 20:00:45,520 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:00:45,521 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-12 20:00:45,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ab5a4be0/7206922a429f41fc91c0fc4c463fad3d/FLAGaaa8c1e07 [2020-10-12 20:00:45,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ab5a4be0/7206922a429f41fc91c0fc4c463fad3d [2020-10-12 20:00:45,700 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:00:45,702 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:00:45,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:00:45,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:00:45,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:00:45,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:00:45" (1/1) ... [2020-10-12 20:00:45,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40f1707e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:00:45, skipping insertion in model container [2020-10-12 20:00:45,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:00:45" (1/1) ... [2020-10-12 20:00:45,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:00:45,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:00:46,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:00:46,855 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:00:47,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:00:47,180 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:00:47,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:00:47 WrapperNode [2020-10-12 20:00:47,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:00:47,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:00:47,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:00:47,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:00:47,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:00:47" (1/1) ... [2020-10-12 20:00:47,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:00:47" (1/1) ... [2020-10-12 20:00:47,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:00:47" (1/1) ... [2020-10-12 20:00:47,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:00:47" (1/1) ... [2020-10-12 20:00:47,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:00:47" (1/1) ... [2020-10-12 20:00:47,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:00:47" (1/1) ... [2020-10-12 20:00:47,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:00:47" (1/1) ... [2020-10-12 20:00:47,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:00:47,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:00:47,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:00:47,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:00:47,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:00:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:00:47,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:00:47,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:00:47,446 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:00:47,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:00:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:00:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:00:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:00:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:00:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:00:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:00:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:00:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:00:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:00:47,449 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:00:47,449 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:00:47,449 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:00:47,449 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:00:47,449 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:00:47,450 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:00:47,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:00:47,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:00:49,624 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:00:49,625 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:00:49,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:00:49 BoogieIcfgContainer [2020-10-12 20:00:49,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:00:49,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:00:49,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:00:49,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:00:49,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:00:45" (1/3) ... [2020-10-12 20:00:49,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1171d2bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:00:49, skipping insertion in model container [2020-10-12 20:00:49,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:00:47" (2/3) ... [2020-10-12 20:00:49,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1171d2bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:00:49, skipping insertion in model container [2020-10-12 20:00:49,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:00:49" (3/3) ... [2020-10-12 20:00:49,643 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-12 20:00:49,654 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:00:49,663 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-12 20:00:49,677 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-12 20:00:49,705 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:00:49,705 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:00:49,705 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:00:49,706 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:00:49,706 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:00:49,706 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:00:49,706 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:00:49,706 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:00:49,736 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states. [2020-10-12 20:00:49,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 20:00:49,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:00:49,757 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] [2020-10-12 20:00:49,757 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:00:49,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:00:49,764 INFO L82 PathProgramCache]: Analyzing trace with hash 703159597, now seen corresponding path program 1 times [2020-10-12 20:00:49,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:00:49,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440324371] [2020-10-12 20:00:49,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:00:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:50,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:50,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:50,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:50,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:51,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:51,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:52,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:52,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:52,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:55,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:55,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 20:00:55,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:00:55,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:00:55,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:55,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:00:55,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-12 20:00:55,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 20:00:55,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 20:00:56,005 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:00:56,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:00:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:56,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:56,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:56,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:00:56,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:00:56,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 20:00:56,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:56,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:00:56,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:00:56,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:00:56,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:56,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:00:56,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440324371] [2020-10-12 20:00:56,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:00:56,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:00:56,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629756665] [2020-10-12 20:00:56,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:00:56,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:00:56,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:00:56,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:00:56,127 INFO L87 Difference]: Start difference. First operand 710 states. Second operand 9 states. [2020-10-12 20:01:02,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:01:02,797 INFO L93 Difference]: Finished difference Result 1333 states and 2221 transitions. [2020-10-12 20:01:02,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 20:01:02,800 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-10-12 20:01:02,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:01:02,824 INFO L225 Difference]: With dead ends: 1333 [2020-10-12 20:01:02,825 INFO L226 Difference]: Without dead ends: 1186 [2020-10-12 20:01:02,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-12 20:01:02,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2020-10-12 20:01:02,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 718. [2020-10-12 20:01:02,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 718 states. [2020-10-12 20:01:02,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 965 transitions. [2020-10-12 20:01:02,937 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 965 transitions. Word has length 67 [2020-10-12 20:01:02,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:01:02,938 INFO L479 AbstractCegarLoop]: Abstraction has 718 states and 965 transitions. [2020-10-12 20:01:02,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:01:02,938 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 965 transitions. [2020-10-12 20:01:02,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 20:01:02,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:01:02,943 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] [2020-10-12 20:01:02,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:01:02,944 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:01:02,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:01:02,944 INFO L82 PathProgramCache]: Analyzing trace with hash -604004858, now seen corresponding path program 1 times [2020-10-12 20:01:02,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:01:02,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049437890] [2020-10-12 20:01:02,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:01:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:03,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:03,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:03,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:03,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:03,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:03,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:04,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:04,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:08,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:08,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 20:01:08,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:01:08,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 20:01:08,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:08,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:01:08,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:01:08,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 20:01:08,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:08,628 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:01:08,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:01:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:08,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:08,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:08,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:01:08,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:01:08,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 20:01:08,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:08,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:01:08,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:01:08,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:01:08,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:08,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:01:08,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049437890] [2020-10-12 20:01:08,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:01:08,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:01:08,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972766021] [2020-10-12 20:01:08,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:01:08,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:01:08,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:01:08,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:01:08,728 INFO L87 Difference]: Start difference. First operand 718 states and 965 transitions. Second operand 10 states. [2020-10-12 20:01:09,253 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 327 [2020-10-12 20:01:14,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:01:14,819 INFO L93 Difference]: Finished difference Result 2540 states and 3663 transitions. [2020-10-12 20:01:14,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 20:01:14,820 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-12 20:01:14,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:01:14,839 INFO L225 Difference]: With dead ends: 2540 [2020-10-12 20:01:14,839 INFO L226 Difference]: Without dead ends: 2013 [2020-10-12 20:01:14,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930 [2020-10-12 20:01:14,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2020-10-12 20:01:14,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 958. [2020-10-12 20:01:14,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 958 states. [2020-10-12 20:01:14,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1326 transitions. [2020-10-12 20:01:14,955 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1326 transitions. Word has length 68 [2020-10-12 20:01:14,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:01:14,956 INFO L479 AbstractCegarLoop]: Abstraction has 958 states and 1326 transitions. [2020-10-12 20:01:14,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:01:14,956 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1326 transitions. [2020-10-12 20:01:14,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 20:01:14,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:01:14,964 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] [2020-10-12 20:01:14,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:01:14,965 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:01:14,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:01:14,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1681109866, now seen corresponding path program 1 times [2020-10-12 20:01:14,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:01:14,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640815526] [2020-10-12 20:01:14,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:01:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:15,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:15,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:15,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:15,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:15,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:15,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:16,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:16,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:17,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:17,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:18,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:18,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:20,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:20,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 20:01:20,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:01:20,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:01:20,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:20,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:01:20,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:01:20,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 20:01:20,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:20,721 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:01:20,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:01:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:20,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:20,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:20,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:01:20,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:01:20,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 20:01:20,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:20,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:01:20,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:01:20,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:01:20,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:20,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:01:20,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640815526] [2020-10-12 20:01:20,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:01:20,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 20:01:20,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368898844] [2020-10-12 20:01:20,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:01:20,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:01:20,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:01:20,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:01:20,800 INFO L87 Difference]: Start difference. First operand 958 states and 1326 transitions. Second operand 11 states. [2020-10-12 20:01:21,422 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2020-10-12 20:01:28,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:01:28,576 INFO L93 Difference]: Finished difference Result 2122 states and 3090 transitions. [2020-10-12 20:01:28,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 20:01:28,576 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-10-12 20:01:28,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:01:28,589 INFO L225 Difference]: With dead ends: 2122 [2020-10-12 20:01:28,589 INFO L226 Difference]: Without dead ends: 1886 [2020-10-12 20:01:28,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2020-10-12 20:01:28,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2020-10-12 20:01:28,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 998. [2020-10-12 20:01:28,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 998 states. [2020-10-12 20:01:28,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1389 transitions. [2020-10-12 20:01:28,667 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1389 transitions. Word has length 68 [2020-10-12 20:01:28,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:01:28,667 INFO L479 AbstractCegarLoop]: Abstraction has 998 states and 1389 transitions. [2020-10-12 20:01:28,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:01:28,668 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1389 transitions. [2020-10-12 20:01:28,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 20:01:28,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:01:28,670 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] [2020-10-12 20:01:28,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:01:28,671 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:01:28,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:01:28,671 INFO L82 PathProgramCache]: Analyzing trace with hash 542454263, now seen corresponding path program 1 times [2020-10-12 20:01:28,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:01:28,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391426493] [2020-10-12 20:01:28,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:01:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:28,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:28,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:28,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:29,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:29,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:30,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:30,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:30,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:30,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:33,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:33,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 20:01:33,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:01:33,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:01:33,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:33,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:01:33,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 20:01:33,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 20:01:33,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:34,389 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:01:34,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:01:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:34,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:34,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:34,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:01:34,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:01:34,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 20:01:34,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:34,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:01:34,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:01:34,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:01:34,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:34,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:01:34,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391426493] [2020-10-12 20:01:34,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:01:34,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:01:34,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13395549] [2020-10-12 20:01:34,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:01:34,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:01:34,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:01:34,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:01:34,448 INFO L87 Difference]: Start difference. First operand 998 states and 1389 transitions. Second operand 9 states. [2020-10-12 20:01:34,971 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-10-12 20:01:40,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:01:40,094 INFO L93 Difference]: Finished difference Result 2271 states and 3322 transitions. [2020-10-12 20:01:40,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 20:01:40,099 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-12 20:01:40,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:01:40,110 INFO L225 Difference]: With dead ends: 2271 [2020-10-12 20:01:40,111 INFO L226 Difference]: Without dead ends: 2042 [2020-10-12 20:01:40,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2020-10-12 20:01:40,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2020-10-12 20:01:40,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1050. [2020-10-12 20:01:40,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2020-10-12 20:01:40,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1469 transitions. [2020-10-12 20:01:40,178 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1469 transitions. Word has length 68 [2020-10-12 20:01:40,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:01:40,178 INFO L479 AbstractCegarLoop]: Abstraction has 1050 states and 1469 transitions. [2020-10-12 20:01:40,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:01:40,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1469 transitions. [2020-10-12 20:01:40,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 20:01:40,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:01:40,181 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] [2020-10-12 20:01:40,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:01:40,182 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:01:40,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:01:40,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1890198345, now seen corresponding path program 1 times [2020-10-12 20:01:40,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:01:40,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856699500] [2020-10-12 20:01:40,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:01:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:40,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:40,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:40,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:40,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:40,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:40,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:40,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:40,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:41,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:41,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:41,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:41,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:42,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:45,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:45,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 20:01:45,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:01:45,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:01:45,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:45,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:01:45,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:01:45,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 20:01:45,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:46,159 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:01:46,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:01:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:46,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:46,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:46,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:01:46,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:01:46,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 20:01:46,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:46,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:01:46,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:01:46,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:01:46,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:46,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:01:46,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856699500] [2020-10-12 20:01:46,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:01:46,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 20:01:46,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603868816] [2020-10-12 20:01:46,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:01:46,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:01:46,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:01:46,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:01:46,222 INFO L87 Difference]: Start difference. First operand 1050 states and 1469 transitions. Second operand 11 states. [2020-10-12 20:01:46,787 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-12 20:01:53,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:01:53,044 INFO L93 Difference]: Finished difference Result 2280 states and 3334 transitions. [2020-10-12 20:01:53,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 20:01:53,045 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-10-12 20:01:53,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:01:53,053 INFO L225 Difference]: With dead ends: 2280 [2020-10-12 20:01:53,054 INFO L226 Difference]: Without dead ends: 2036 [2020-10-12 20:01:53,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2020-10-12 20:01:53,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2020-10-12 20:01:53,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 1122. [2020-10-12 20:01:53,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1122 states. [2020-10-12 20:01:53,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1580 transitions. [2020-10-12 20:01:53,139 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1580 transitions. Word has length 68 [2020-10-12 20:01:53,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:01:53,139 INFO L479 AbstractCegarLoop]: Abstraction has 1122 states and 1580 transitions. [2020-10-12 20:01:53,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:01:53,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1580 transitions. [2020-10-12 20:01:53,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 20:01:53,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:01:53,142 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] [2020-10-12 20:01:53,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:01:53,143 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:01:53,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:01:53,143 INFO L82 PathProgramCache]: Analyzing trace with hash -181204822, now seen corresponding path program 1 times [2020-10-12 20:01:53,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:01:53,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70965837] [2020-10-12 20:01:53,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:01:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:53,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:53,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:53,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:53,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:53,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:53,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:55,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:55,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:55,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:56,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:58,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:58,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 20:01:58,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:01:58,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:01:58,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:58,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:01:58,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-12 20:01:58,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 20:01:58,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:58,744 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:01:58,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:01:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:58,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:58,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:58,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:01:58,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:01:58,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:01:58,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:58,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:01:58,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:01:58,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:01:58,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:58,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:01:58,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70965837] [2020-10-12 20:01:58,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:01:58,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:01:58,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281361977] [2020-10-12 20:01:58,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:01:58,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:01:58,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:01:58,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:01:58,783 INFO L87 Difference]: Start difference. First operand 1122 states and 1580 transitions. Second operand 9 states. [2020-10-12 20:02:03,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:02:03,720 INFO L93 Difference]: Finished difference Result 2542 states and 3736 transitions. [2020-10-12 20:02:03,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:02:03,720 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-12 20:02:03,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:02:03,730 INFO L225 Difference]: With dead ends: 2542 [2020-10-12 20:02:03,730 INFO L226 Difference]: Without dead ends: 2285 [2020-10-12 20:02:03,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:02:03,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2020-10-12 20:02:03,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 1212. [2020-10-12 20:02:03,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1212 states. [2020-10-12 20:02:03,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1720 transitions. [2020-10-12 20:02:03,853 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1720 transitions. Word has length 68 [2020-10-12 20:02:03,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:02:03,854 INFO L479 AbstractCegarLoop]: Abstraction has 1212 states and 1720 transitions. [2020-10-12 20:02:03,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:02:03,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1720 transitions. [2020-10-12 20:02:03,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 20:02:03,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:02:03,857 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] [2020-10-12 20:02:03,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:02:03,857 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:02:03,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:02:03,858 INFO L82 PathProgramCache]: Analyzing trace with hash 844463184, now seen corresponding path program 1 times [2020-10-12 20:02:03,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:02:03,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243007373] [2020-10-12 20:02:03,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:02:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:03,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:03,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:03,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:04,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:04,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:04,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:04,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:04,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:04,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:06,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:08,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:08,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 20:02:08,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:02:08,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 20:02:08,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:08,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:02:08,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 20:02:08,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 20:02:08,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:02:09,526 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:02:09,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:02:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:09,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:09,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:09,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:02:09,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:02:09,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:02:09,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:09,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:02:09,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:02:09,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:02:09,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:02:09,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:02:09,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243007373] [2020-10-12 20:02:09,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:02:09,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:02:09,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381911175] [2020-10-12 20:02:09,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:02:09,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:02:09,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:02:09,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:02:09,574 INFO L87 Difference]: Start difference. First operand 1212 states and 1720 transitions. Second operand 10 states. [2020-10-12 20:02:10,143 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 330 [2020-10-12 20:02:15,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:02:15,521 INFO L93 Difference]: Finished difference Result 3028 states and 4473 transitions. [2020-10-12 20:02:15,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 20:02:15,522 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-12 20:02:15,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:02:15,532 INFO L225 Difference]: With dead ends: 3028 [2020-10-12 20:02:15,532 INFO L226 Difference]: Without dead ends: 2761 [2020-10-12 20:02:15,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-10-12 20:02:15,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2020-10-12 20:02:15,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 1304. [2020-10-12 20:02:15,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1304 states. [2020-10-12 20:02:15,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1859 transitions. [2020-10-12 20:02:15,652 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1859 transitions. Word has length 68 [2020-10-12 20:02:15,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:02:15,652 INFO L479 AbstractCegarLoop]: Abstraction has 1304 states and 1859 transitions. [2020-10-12 20:02:15,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:02:15,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1859 transitions. [2020-10-12 20:02:15,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 20:02:15,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:02:15,656 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] [2020-10-12 20:02:15,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:02:15,656 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:02:15,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:02:15,657 INFO L82 PathProgramCache]: Analyzing trace with hash 120804099, now seen corresponding path program 1 times [2020-10-12 20:02:15,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:02:15,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425195722] [2020-10-12 20:02:15,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:02:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:15,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:15,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:15,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:15,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:16,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:16,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:17,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:17,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:17,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:17,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:18,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:20,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:20,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 20:02:20,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:02:20,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:02:20,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:20,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:02:20,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 20:02:20,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 20:02:20,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:02:21,289 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:02:21,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:02:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:21,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:21,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:21,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:02:21,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:02:21,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 20:02:21,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:21,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:02:21,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:02:21,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:02:21,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:02:21,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:02:21,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425195722] [2020-10-12 20:02:21,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:02:21,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:02:21,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999959675] [2020-10-12 20:02:21,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:02:21,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:02:21,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:02:21,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:02:21,330 INFO L87 Difference]: Start difference. First operand 1304 states and 1859 transitions. Second operand 10 states. [2020-10-12 20:02:21,885 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 330 [2020-10-12 20:02:27,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:02:27,121 INFO L93 Difference]: Finished difference Result 3034 states and 4441 transitions. [2020-10-12 20:02:27,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 20:02:27,121 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-12 20:02:27,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:02:27,130 INFO L225 Difference]: With dead ends: 3034 [2020-10-12 20:02:27,130 INFO L226 Difference]: Without dead ends: 2755 [2020-10-12 20:02:27,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-10-12 20:02:27,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2020-10-12 20:02:27,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 1327. [2020-10-12 20:02:27,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1327 states. [2020-10-12 20:02:27,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1890 transitions. [2020-10-12 20:02:27,254 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1890 transitions. Word has length 68 [2020-10-12 20:02:27,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:02:27,255 INFO L479 AbstractCegarLoop]: Abstraction has 1327 states and 1890 transitions. [2020-10-12 20:02:27,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:02:27,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1890 transitions. [2020-10-12 20:02:27,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 20:02:27,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:02:27,258 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] [2020-10-12 20:02:27,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:02:27,261 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:02:27,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:02:27,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1094742194, now seen corresponding path program 1 times [2020-10-12 20:02:27,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:02:27,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224637336] [2020-10-12 20:02:27,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:02:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:27,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:27,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:27,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:27,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:27,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:27,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:28,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:28,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:29,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:29,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:29,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:29,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:32,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:32,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 20:02:32,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:02:32,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:02:32,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:02:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:02:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 20:02:32,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:02:32,891 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:02:32,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:02:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:32,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:32,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:32,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:02:32,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:02:32,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 20:02:32,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:32,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:02:32,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:02:32,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:02:32,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:02:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:02:32,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224637336] [2020-10-12 20:02:32,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:02:32,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:02:32,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593843432] [2020-10-12 20:02:32,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:02:32,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:02:32,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:02:32,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:02:32,946 INFO L87 Difference]: Start difference. First operand 1327 states and 1890 transitions. Second operand 11 states. [2020-10-12 20:02:33,486 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 326 [2020-10-12 20:02:39,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:02:39,077 INFO L93 Difference]: Finished difference Result 2783 states and 4059 transitions. [2020-10-12 20:02:39,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 20:02:39,077 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2020-10-12 20:02:39,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:02:39,085 INFO L225 Difference]: With dead ends: 2783 [2020-10-12 20:02:39,085 INFO L226 Difference]: Without dead ends: 2526 [2020-10-12 20:02:39,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2020-10-12 20:02:39,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2020-10-12 20:02:39,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 1407. [2020-10-12 20:02:39,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1407 states. [2020-10-12 20:02:39,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 2013 transitions. [2020-10-12 20:02:39,197 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 2013 transitions. Word has length 69 [2020-10-12 20:02:39,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:02:39,197 INFO L479 AbstractCegarLoop]: Abstraction has 1407 states and 2013 transitions. [2020-10-12 20:02:39,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:02:39,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 2013 transitions. [2020-10-12 20:02:39,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 20:02:39,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:02:39,201 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] [2020-10-12 20:02:39,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:02:39,201 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:02:39,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:02:39,202 INFO L82 PathProgramCache]: Analyzing trace with hash -2053765981, now seen corresponding path program 1 times [2020-10-12 20:02:39,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:02:39,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214037695] [2020-10-12 20:02:39,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:02:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:39,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:39,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:39,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:39,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:39,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:39,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:40,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:41,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:41,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:41,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:41,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:43,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:43,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:44,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:44,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 20:02:44,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:02:44,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 20:02:44,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:02:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:02:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 20:02:44,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:02:44,917 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:02:44,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:02:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:44,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:44,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:44,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:02:44,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:02:44,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 20:02:44,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:44,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:02:44,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:02:44,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:02:44,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:02:44,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:02:44,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214037695] [2020-10-12 20:02:44,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:02:44,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:02:44,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274425597] [2020-10-12 20:02:44,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:02:44,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:02:44,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:02:44,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:02:44,981 INFO L87 Difference]: Start difference. First operand 1407 states and 2013 transitions. Second operand 11 states. [2020-10-12 20:02:45,519 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 327 [2020-10-12 20:02:51,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:02:51,669 INFO L93 Difference]: Finished difference Result 3183 states and 4662 transitions. [2020-10-12 20:02:51,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 20:02:51,670 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2020-10-12 20:02:51,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:02:51,680 INFO L225 Difference]: With dead ends: 3183 [2020-10-12 20:02:51,680 INFO L226 Difference]: Without dead ends: 2927 [2020-10-12 20:02:51,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2020-10-12 20:02:51,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-10-12 20:02:51,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 1438. [2020-10-12 20:02:51,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1438 states. [2020-10-12 20:02:51,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2059 transitions. [2020-10-12 20:02:51,823 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2059 transitions. Word has length 69 [2020-10-12 20:02:51,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:02:51,823 INFO L479 AbstractCegarLoop]: Abstraction has 1438 states and 2059 transitions. [2020-10-12 20:02:51,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:02:51,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2059 transitions. [2020-10-12 20:02:51,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 20:02:51,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:02:51,827 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] [2020-10-12 20:02:51,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:02:51,827 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:02:51,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:02:51,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1517542230, now seen corresponding path program 1 times [2020-10-12 20:02:51,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:02:51,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872230568] [2020-10-12 20:02:51,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:02:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:51,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:51,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:51,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:52,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:52,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:52,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:52,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:55,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:55,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:55,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:55,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:55,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:55,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:56,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:56,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 20:02:56,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:02:56,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:02:56,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:56,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:02:56,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:02:56,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 20:02:56,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:02:57,522 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:02:57,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:02:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:57,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:57,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:57,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:02:57,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:02:57,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:02:57,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:57,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:02:57,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:02:57,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:02:57,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:02:57,557 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 20:02:57,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872230568] [2020-10-12 20:02:57,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:02:57,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 20:02:57,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411983901] [2020-10-12 20:02:57,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:02:57,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:02:57,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:02:57,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:02:57,559 INFO L87 Difference]: Start difference. First operand 1438 states and 2059 transitions. Second operand 11 states. [2020-10-12 20:02:58,093 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-12 20:03:05,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:03:05,044 INFO L93 Difference]: Finished difference Result 4332 states and 6345 transitions. [2020-10-12 20:03:05,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 20:03:05,045 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2020-10-12 20:03:05,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:03:05,060 INFO L225 Difference]: With dead ends: 4332 [2020-10-12 20:03:05,060 INFO L226 Difference]: Without dead ends: 4075 [2020-10-12 20:03:05,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2020-10-12 20:03:05,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2020-10-12 20:03:05,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 1888. [2020-10-12 20:03:05,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1888 states. [2020-10-12 20:03:05,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2720 transitions. [2020-10-12 20:03:05,254 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2720 transitions. Word has length 69 [2020-10-12 20:03:05,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:03:05,254 INFO L479 AbstractCegarLoop]: Abstraction has 1888 states and 2720 transitions. [2020-10-12 20:03:05,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:03:05,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2720 transitions. [2020-10-12 20:03:05,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 20:03:05,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:03:05,259 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] [2020-10-12 20:03:05,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:03:05,259 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:03:05,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:03:05,260 INFO L82 PathProgramCache]: Analyzing trace with hash 541208601, now seen corresponding path program 1 times [2020-10-12 20:03:05,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:03:05,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258417938] [2020-10-12 20:03:05,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:03:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:03:05,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:05,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:05,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:05,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:05,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:06,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:06,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:06,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:08,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:08,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:08,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:08,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:08,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:09,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:09,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:09,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:09,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:09,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:10,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:10,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:10,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:03:10,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 20:03:10,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-12 20:03:10,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 20:03:10,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:03:10,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 20:03:10,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 20:03:10,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 20:03:10,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:03:10,603 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 34 [2020-10-12 20:03:11,203 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:03:11,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:03:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:03:11,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:11,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:03:11,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:03:11,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:03:11,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 20:03:11,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:03:11,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:03:11,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:03:11,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:03:11,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:03:11,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:03:11,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258417938] [2020-10-12 20:03:11,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:03:11,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 20:03:11,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083693464] [2020-10-12 20:03:11,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 20:03:11,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:03:11,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 20:03:11,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:03:11,258 INFO L87 Difference]: Start difference. First operand 1888 states and 2720 transitions. Second operand 13 states. [2020-10-12 20:03:11,387 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-10-12 20:03:11,983 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification that was a NOOP. DAG size: 345 [2020-10-12 20:03:19,422 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-12 20:03:21,314 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-12 20:03:22,067 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-12 20:03:22,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:03:22,279 INFO L93 Difference]: Finished difference Result 4179 states and 6090 transitions. [2020-10-12 20:03:22,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-12 20:03:22,279 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-10-12 20:03:22,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:03:22,289 INFO L225 Difference]: With dead ends: 4179 [2020-10-12 20:03:22,289 INFO L226 Difference]: Without dead ends: 3639 [2020-10-12 20:03:22,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=393, Invalid=1769, Unknown=0, NotChecked=0, Total=2162 [2020-10-12 20:03:22,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2020-10-12 20:03:22,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 1917. [2020-10-12 20:03:22,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1917 states. [2020-10-12 20:03:22,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 2765 transitions. [2020-10-12 20:03:22,479 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 2765 transitions. Word has length 69 [2020-10-12 20:03:22,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:03:22,479 INFO L479 AbstractCegarLoop]: Abstraction has 1917 states and 2765 transitions. [2020-10-12 20:03:22,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 20:03:22,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 2765 transitions. [2020-10-12 20:03:22,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 20:03:22,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:03:22,483 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] [2020-10-12 20:03:22,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:03:22,483 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:03:22,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:03:22,484 INFO L82 PathProgramCache]: Analyzing trace with hash -2003129696, now seen corresponding path program 1 times [2020-10-12 20:03:22,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:03:22,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519241662] [2020-10-12 20:03:22,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:03:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:03:22,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:22,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:22,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:22,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:22,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:23,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:23,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:23,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:23,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:23,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:24,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:24,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:27,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:03:27,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 20:03:27,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:03:27,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:03:27,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:03:27,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 20:03:27,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:03:27,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 20:03:27,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:03:28,207 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:03:28,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:03:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:03:28,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:28,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:03:28,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:03:28,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:03:28,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:03:28,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:03:28,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:03:28,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:03:28,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:03:28,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:03:28,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:03:28,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519241662] [2020-10-12 20:03:28,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:03:28,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 20:03:28,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068551664] [2020-10-12 20:03:28,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 20:03:28,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:03:28,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 20:03:28,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 20:03:28,254 INFO L87 Difference]: Start difference. First operand 1917 states and 2765 transitions. Second operand 12 states. [2020-10-12 20:03:28,809 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 329 [2020-10-12 20:03:37,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:03:37,665 INFO L93 Difference]: Finished difference Result 6659 states and 9799 transitions. [2020-10-12 20:03:37,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-12 20:03:37,665 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-10-12 20:03:37,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:03:37,677 INFO L225 Difference]: With dead ends: 6659 [2020-10-12 20:03:37,678 INFO L226 Difference]: Without dead ends: 5882 [2020-10-12 20:03:37,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=373, Invalid=1267, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 20:03:37,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5882 states. [2020-10-12 20:03:38,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5882 to 1842. [2020-10-12 20:03:38,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1842 states. [2020-10-12 20:03:38,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2636 transitions. [2020-10-12 20:03:38,039 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2636 transitions. Word has length 69 [2020-10-12 20:03:38,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:03:38,040 INFO L479 AbstractCegarLoop]: Abstraction has 1842 states and 2636 transitions. [2020-10-12 20:03:38,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 20:03:38,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2636 transitions. [2020-10-12 20:03:38,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 20:03:38,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:03:38,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:03:38,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:03:38,046 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:03:38,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:03:38,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1964278841, now seen corresponding path program 1 times [2020-10-12 20:03:38,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:03:38,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652288694] [2020-10-12 20:03:38,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:03:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:03:38,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:38,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:38,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:38,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:38,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:38,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:42,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:03:42,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 20:03:42,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:03:42,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4392 [2020-10-12 20:03:42,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:03:42,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:03:42,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:03:42,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 20:03:42,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:03:43,050 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:03:43,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:03:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:03:43,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:43,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:03:43,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:03:43,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:03:43,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 20:03:43,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:03:43,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:03:43,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:03:43,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:03:43,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:03:43,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:03:43,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652288694] [2020-10-12 20:03:43,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:03:43,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:03:43,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592084337] [2020-10-12 20:03:43,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:03:43,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:03:43,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:03:43,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:03:43,105 INFO L87 Difference]: Start difference. First operand 1842 states and 2636 transitions. Second operand 9 states. [2020-10-12 20:03:43,676 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 330 [2020-10-12 20:03:48,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:03:48,195 INFO L93 Difference]: Finished difference Result 3292 states and 4778 transitions. [2020-10-12 20:03:48,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 20:03:48,196 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-12 20:03:48,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:03:48,202 INFO L225 Difference]: With dead ends: 3292 [2020-10-12 20:03:48,202 INFO L226 Difference]: Without dead ends: 2297 [2020-10-12 20:03:48,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:03:48,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2020-10-12 20:03:48,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1713. [2020-10-12 20:03:48,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1713 states. [2020-10-12 20:03:48,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 2463 transitions. [2020-10-12 20:03:48,493 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 2463 transitions. Word has length 69 [2020-10-12 20:03:48,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:03:48,493 INFO L479 AbstractCegarLoop]: Abstraction has 1713 states and 2463 transitions. [2020-10-12 20:03:48,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:03:48,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 2463 transitions. [2020-10-12 20:03:48,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 20:03:48,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:03:48,497 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] [2020-10-12 20:03:48,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:03:48,497 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:03:48,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:03:48,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1555310593, now seen corresponding path program 1 times [2020-10-12 20:03:48,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:03:48,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151925222] [2020-10-12 20:03:48,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:03:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:03:48,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:48,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:48,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:49,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:49,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:49,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:49,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:49,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:50,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:52,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:03:52,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:03:52,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:03:52,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3999 [2020-10-12 20:03:52,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:03:52,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 20:03:52,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:03:52,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 20:03:52,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:03:53,188 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:03:53,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:03:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:03:53,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:53,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:03:53,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:03:53,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:03:53,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 20:03:53,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:03:53,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:03:53,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:03:53,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:03:53,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:03:53,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:03:53,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151925222] [2020-10-12 20:03:53,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:03:53,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 20:03:53,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805181377] [2020-10-12 20:03:53,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 20:03:53,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:03:53,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 20:03:53,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 20:03:53,241 INFO L87 Difference]: Start difference. First operand 1713 states and 2463 transitions. Second operand 12 states. [2020-10-12 20:03:53,800 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-12 20:04:00,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:04:00,843 INFO L93 Difference]: Finished difference Result 4843 states and 7032 transitions. [2020-10-12 20:04:00,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-12 20:04:00,844 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 70 [2020-10-12 20:04:00,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:04:00,851 INFO L225 Difference]: With dead ends: 4843 [2020-10-12 20:04:00,851 INFO L226 Difference]: Without dead ends: 4381 [2020-10-12 20:04:00,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=445, Invalid=1447, Unknown=0, NotChecked=0, Total=1892 [2020-10-12 20:04:00,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4381 states. [2020-10-12 20:04:01,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4381 to 1927. [2020-10-12 20:04:01,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1927 states. [2020-10-12 20:04:01,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 2785 transitions. [2020-10-12 20:04:01,199 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 2785 transitions. Word has length 70 [2020-10-12 20:04:01,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:04:01,200 INFO L479 AbstractCegarLoop]: Abstraction has 1927 states and 2785 transitions. [2020-10-12 20:04:01,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 20:04:01,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 2785 transitions. [2020-10-12 20:04:01,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 20:04:01,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:04:01,203 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] [2020-10-12 20:04:01,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:04:01,203 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:04:01,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:04:01,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1132510557, now seen corresponding path program 1 times [2020-10-12 20:04:01,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:04:01,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854720920] [2020-10-12 20:04:01,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:04:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:04:01,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:01,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:01,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:01,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:01,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:04,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:04:04,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:04:04,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:04:04,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2965 [2020-10-12 20:04:04,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:04:04,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:04:04,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:04:04,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 20:04:04,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:04:04,786 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:04:04,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:04:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:04:04,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:04,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:04:04,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:04:04,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:04:04,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:04:04,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:04:04,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:04:04,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:04:04,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:04:04,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:04:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:04:04,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854720920] [2020-10-12 20:04:04,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:04:04,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:04:04,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207661928] [2020-10-12 20:04:04,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:04:04,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:04:04,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:04:04,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:04:04,825 INFO L87 Difference]: Start difference. First operand 1927 states and 2785 transitions. Second operand 9 states. [2020-10-12 20:04:05,379 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-12 20:04:10,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:04:10,249 INFO L93 Difference]: Finished difference Result 3453 states and 5052 transitions. [2020-10-12 20:04:10,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:04:10,250 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-10-12 20:04:10,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:04:10,254 INFO L225 Difference]: With dead ends: 3453 [2020-10-12 20:04:10,254 INFO L226 Difference]: Without dead ends: 2775 [2020-10-12 20:04:10,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-12 20:04:10,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2775 states. [2020-10-12 20:04:10,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2775 to 1916. [2020-10-12 20:04:10,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2020-10-12 20:04:10,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2767 transitions. [2020-10-12 20:04:10,487 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2767 transitions. Word has length 70 [2020-10-12 20:04:10,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:04:10,488 INFO L479 AbstractCegarLoop]: Abstraction has 1916 states and 2767 transitions. [2020-10-12 20:04:10,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:04:10,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2767 transitions. [2020-10-12 20:04:10,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 20:04:10,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:04:10,490 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] [2020-10-12 20:04:10,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:04:10,490 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:04:10,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:04:10,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1831678099, now seen corresponding path program 1 times [2020-10-12 20:04:10,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:04:10,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483864428] [2020-10-12 20:04:10,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:04:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:04:10,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:10,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:10,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:10,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:10,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:10,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:11,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:11,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:12,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:12,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:12,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:12,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:12,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:13,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:13,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:13,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:13,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:14,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:15,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:04:15,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:04:15,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-12 20:04:15,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:04:15,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:04:15,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 20:04:15,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:04:15,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 20:04:15,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0