/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:17:45,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:17:45,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:17:45,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:17:45,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:17:45,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:17:45,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:17:45,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:17:45,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:17:45,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:17:45,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:17:45,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:17:45,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:17:45,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:17:45,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:17:45,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:17:45,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:17:45,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:17:45,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:17:45,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:17:45,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:17:45,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:17:45,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:17:45,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:17:45,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:17:45,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:17:45,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:17:45,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:17:45,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:17:45,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:17:45,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:17:45,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:17:45,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:17:45,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:17:45,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:17:45,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:17:45,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:17:45,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:17:45,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:17:45,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:17:45,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:17:45,531 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 [2020-10-15 03:17:45,580 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:17:45,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:17:45,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:17:45,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:17:45,582 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:17:45,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:17:45,583 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:17:45,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:17:45,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:17:45,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:17:45,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:17:45,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:17:45,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:17:45,585 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:17:45,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:17:45,585 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:17:45,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:17:45,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:17:45,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:17:45,586 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:17:45,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:17:45,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:17:45,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:17:45,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:17:45,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:17:45,587 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:17:45,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:17:45,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:17:45,588 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:17:45,588 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:17:45,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:17:45,973 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:17:45,976 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:17:45,978 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:17:45,978 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:17:45,979 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-15 03:17:46,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/748cef88a/46035806ee1141f08dc415fb402c32c2/FLAG4edf51db3 [2020-10-15 03:17:46,682 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:17:46,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-15 03:17:46,708 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/748cef88a/46035806ee1141f08dc415fb402c32c2/FLAG4edf51db3 [2020-10-15 03:17:46,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/748cef88a/46035806ee1141f08dc415fb402c32c2 [2020-10-15 03:17:46,952 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:17:46,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:17:46,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:17:46,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:17:46,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:17:46,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:17:46" (1/1) ... [2020-10-15 03:17:46,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1573d552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:46, skipping insertion in model container [2020-10-15 03:17:46,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:17:46" (1/1) ... [2020-10-15 03:17:46,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:17:47,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:17:47,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:17:47,517 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:17:47,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:17:47,624 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:17:47,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:47 WrapperNode [2020-10-15 03:17:47,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:17:47,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:17:47,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:17:47,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:17:47,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:47" (1/1) ... [2020-10-15 03:17:47,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:47" (1/1) ... [2020-10-15 03:17:47,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:47" (1/1) ... [2020-10-15 03:17:47,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:47" (1/1) ... [2020-10-15 03:17:47,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:47" (1/1) ... [2020-10-15 03:17:47,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:47" (1/1) ... [2020-10-15 03:17:47,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:47" (1/1) ... [2020-10-15 03:17:47,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:17:47,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:17:47,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:17:47,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:17:47,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:47" (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 [2020-10-15 03:17:47,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:17:47,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:17:47,765 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:17:47,765 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:17:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:17:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:17:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:17:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:17:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:17:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:17:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:17:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:17:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:17:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:17:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:17:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:17:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:17:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:17:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:17:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:17:47,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:17:48,693 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:17:48,694 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:17:48,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:17:48 BoogieIcfgContainer [2020-10-15 03:17:48,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:17:48,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:17:48,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:17:48,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:17:48,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:17:46" (1/3) ... [2020-10-15 03:17:48,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2beb03fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:17:48, skipping insertion in model container [2020-10-15 03:17:48,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:47" (2/3) ... [2020-10-15 03:17:48,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2beb03fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:17:48, skipping insertion in model container [2020-10-15 03:17:48,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:17:48" (3/3) ... [2020-10-15 03:17:48,708 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-15 03:17:48,719 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:17:48,727 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:17:48,742 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:17:48,768 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:17:48,768 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:17:48,768 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:17:48,768 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:17:48,768 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:17:48,768 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:17:48,769 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:17:48,769 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:17:48,792 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2020-10-15 03:17:48,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-15 03:17:48,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:48,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:17:48,803 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:48,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:48,810 INFO L82 PathProgramCache]: Analyzing trace with hash -998305872, now seen corresponding path program 1 times [2020-10-15 03:17:48,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:48,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362070759] [2020-10-15 03:17:48,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:49,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:49,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:49,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:49,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:49,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:51,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:51,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:54,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:54,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 03:17:54,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:17:54,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:17:54,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:54,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:54,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:17:54,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:17:54,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 03:17:54,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-15 03:17:54,430 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:17:54,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:54,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:54,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:54,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:54,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:54,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-15 03:17:54,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:54,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:54,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:17:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:17:54,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:17:54,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:17:54,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362070759] [2020-10-15 03:17:54,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:54,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:17:54,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409282768] [2020-10-15 03:17:54,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:17:54,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:54,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:17:54,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:17:54,561 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 6 states. [2020-10-15 03:17:54,848 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-15 03:17:55,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:55,679 INFO L93 Difference]: Finished difference Result 226 states and 371 transitions. [2020-10-15 03:17:55,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:17:55,681 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-15 03:17:55,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:55,695 INFO L225 Difference]: With dead ends: 226 [2020-10-15 03:17:55,695 INFO L226 Difference]: Without dead ends: 124 [2020-10-15 03:17:55,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:17:55,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-15 03:17:55,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-10-15 03:17:55,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-15 03:17:55,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 167 transitions. [2020-10-15 03:17:55,760 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 167 transitions. Word has length 66 [2020-10-15 03:17:55,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:55,761 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 167 transitions. [2020-10-15 03:17:55,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:17:55,762 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 167 transitions. [2020-10-15 03:17:55,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 03:17:55,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:55,764 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] [2020-10-15 03:17:55,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:17:55,765 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:55,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:55,766 INFO L82 PathProgramCache]: Analyzing trace with hash 898837651, now seen corresponding path program 1 times [2020-10-15 03:17:55,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:55,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168583740] [2020-10-15 03:17:55,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:55,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:55,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:55,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:56,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:56,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:56,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:56,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:56,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:56,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:57,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:58,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:00,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:00,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 03:18:00,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:18:00,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 03:18:00,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:00,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:00,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:18:00,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:18:00,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 03:18:00,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:18:01,087 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 24 [2020-10-15 03:18:01,249 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:18:01,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:01,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:01,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:01,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:01,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:01,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:18:01,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:01,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:01,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:18:01,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:18:01,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168583740] [2020-10-15 03:18:01,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:01,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:18:01,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010300539] [2020-10-15 03:18:01,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:18:01,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:01,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:18:01,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:18:01,329 INFO L87 Difference]: Start difference. First operand 124 states and 167 transitions. Second operand 9 states. [2020-10-15 03:18:01,516 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:18:02,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:02,675 INFO L93 Difference]: Finished difference Result 245 states and 353 transitions. [2020-10-15 03:18:02,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:18:02,675 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-10-15 03:18:02,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:02,679 INFO L225 Difference]: With dead ends: 245 [2020-10-15 03:18:02,681 INFO L226 Difference]: Without dead ends: 188 [2020-10-15 03:18:02,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:18:02,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-15 03:18:02,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 124. [2020-10-15 03:18:02,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-15 03:18:02,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 166 transitions. [2020-10-15 03:18:02,734 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 166 transitions. Word has length 67 [2020-10-15 03:18:02,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:02,735 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 166 transitions. [2020-10-15 03:18:02,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:18:02,735 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 166 transitions. [2020-10-15 03:18:02,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 03:18:02,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:02,741 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] [2020-10-15 03:18:02,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:18:02,744 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:02,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:02,744 INFO L82 PathProgramCache]: Analyzing trace with hash 2097698280, now seen corresponding path program 1 times [2020-10-15 03:18:02,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:02,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504302177] [2020-10-15 03:18:02,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:02,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:02,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:02,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:03,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:03,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:03,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:06,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:06,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:06,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:07,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:07,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 03:18:07,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:18:07,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:18:07,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:07,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:07,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:18:07,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:18:07,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 03:18:07,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:18:08,024 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:18:08,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:08,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:08,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:08,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:08,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:08,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:18:08,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:08,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:08,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:08,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:08,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:08,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:18:08,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:18:08,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504302177] [2020-10-15 03:18:08,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:08,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:18:08,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275821510] [2020-10-15 03:18:08,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:18:08,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:08,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:18:08,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:18:08,067 INFO L87 Difference]: Start difference. First operand 124 states and 166 transitions. Second operand 7 states. [2020-10-15 03:18:08,232 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-15 03:18:09,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:09,047 INFO L93 Difference]: Finished difference Result 566 states and 848 transitions. [2020-10-15 03:18:09,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:18:09,047 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-15 03:18:09,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:09,052 INFO L225 Difference]: With dead ends: 566 [2020-10-15 03:18:09,053 INFO L226 Difference]: Without dead ends: 515 [2020-10-15 03:18:09,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:18:09,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2020-10-15 03:18:09,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 189. [2020-10-15 03:18:09,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-15 03:18:09,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 266 transitions. [2020-10-15 03:18:09,089 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 266 transitions. Word has length 68 [2020-10-15 03:18:09,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:09,090 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 266 transitions. [2020-10-15 03:18:09,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:18:09,090 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 266 transitions. [2020-10-15 03:18:09,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:18:09,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:09,092 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] [2020-10-15 03:18:09,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:18:09,092 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:09,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:09,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1341887635, now seen corresponding path program 1 times [2020-10-15 03:18:09,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:09,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633521481] [2020-10-15 03:18:09,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:09,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:09,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:09,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:09,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:09,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:09,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:10,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:10,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:10,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:11,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:12,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:13,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:13,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:14,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:14,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:18:14,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:18:14,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:18:14,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:14,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:14,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:18:14,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:18:14,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 03:18:14,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:18:14,309 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 25 [2020-10-15 03:18:14,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:14,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:14,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:14,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:14,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:14,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:18:14,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:14,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:14,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:14,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:14,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:14,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:18:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:18:14,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633521481] [2020-10-15 03:18:14,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:14,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:18:14,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762148094] [2020-10-15 03:18:14,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:18:14,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:14,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:18:14,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:18:14,483 INFO L87 Difference]: Start difference. First operand 189 states and 266 transitions. Second operand 10 states. [2020-10-15 03:18:15,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:15,570 INFO L93 Difference]: Finished difference Result 417 states and 617 transitions. [2020-10-15 03:18:15,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:18:15,571 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-10-15 03:18:15,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:15,573 INFO L225 Difference]: With dead ends: 417 [2020-10-15 03:18:15,573 INFO L226 Difference]: Without dead ends: 311 [2020-10-15 03:18:15,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:18:15,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-15 03:18:15,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 189. [2020-10-15 03:18:15,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-15 03:18:15,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 264 transitions. [2020-10-15 03:18:15,635 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 264 transitions. Word has length 69 [2020-10-15 03:18:15,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:15,637 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 264 transitions. [2020-10-15 03:18:15,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:18:15,638 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 264 transitions. [2020-10-15 03:18:15,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:18:15,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:15,643 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] [2020-10-15 03:18:15,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:18:15,644 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:15,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:15,644 INFO L82 PathProgramCache]: Analyzing trace with hash 484014175, now seen corresponding path program 1 times [2020-10-15 03:18:15,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:15,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987078353] [2020-10-15 03:18:15,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:15,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:15,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:15,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:15,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:16,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:16,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:18,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:18,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:18,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:20,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:20,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:18:20,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:18:20,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:18:20,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:20,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:20,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:18:20,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:18:20,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 03:18:20,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:20,858 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:18:20,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:20,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:20,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:20,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:20,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:20,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:18:20,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:20,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:20,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:20,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:20,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:20,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:18:20,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:18:20,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987078353] [2020-10-15 03:18:20,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:20,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:18:20,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610977187] [2020-10-15 03:18:20,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:18:20,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:20,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:18:20,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:18:20,916 INFO L87 Difference]: Start difference. First operand 189 states and 264 transitions. Second operand 5 states. [2020-10-15 03:18:21,102 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-15 03:18:22,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:22,017 INFO L93 Difference]: Finished difference Result 378 states and 555 transitions. [2020-10-15 03:18:22,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:18:22,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-15 03:18:22,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:22,021 INFO L225 Difference]: With dead ends: 378 [2020-10-15 03:18:22,021 INFO L226 Difference]: Without dead ends: 278 [2020-10-15 03:18:22,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:18:22,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-15 03:18:22,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 276. [2020-10-15 03:18:22,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-10-15 03:18:22,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 396 transitions. [2020-10-15 03:18:22,087 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 396 transitions. Word has length 70 [2020-10-15 03:18:22,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:22,088 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 396 transitions. [2020-10-15 03:18:22,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:18:22,088 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 396 transitions. [2020-10-15 03:18:22,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:18:22,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:22,090 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] [2020-10-15 03:18:22,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:18:22,090 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:22,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:22,091 INFO L82 PathProgramCache]: Analyzing trace with hash 652780190, now seen corresponding path program 1 times [2020-10-15 03:18:22,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:22,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697267756] [2020-10-15 03:18:22,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:22,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:22,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:22,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:22,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:22,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:23,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:24,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:24,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:27,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:27,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:18:27,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:18:27,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:18:27,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:27,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:18:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:18:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 03:18:27,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:18:27,349 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:18:27,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:27,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:27,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:27,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:27,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:27,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:18:27,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:27,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:27,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:27,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:27,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:27,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:18:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:18:27,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697267756] [2020-10-15 03:18:27,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:27,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:18:27,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499662625] [2020-10-15 03:18:27,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:18:27,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:27,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:18:27,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:18:27,396 INFO L87 Difference]: Start difference. First operand 276 states and 396 transitions. Second operand 7 states. [2020-10-15 03:18:27,761 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:18:28,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:28,953 INFO L93 Difference]: Finished difference Result 1044 states and 1564 transitions. [2020-10-15 03:18:28,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:18:28,954 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-10-15 03:18:28,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:28,960 INFO L225 Difference]: With dead ends: 1044 [2020-10-15 03:18:28,960 INFO L226 Difference]: Without dead ends: 857 [2020-10-15 03:18:28,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:18:28,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2020-10-15 03:18:29,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 276. [2020-10-15 03:18:29,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-10-15 03:18:29,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 394 transitions. [2020-10-15 03:18:29,017 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 394 transitions. Word has length 70 [2020-10-15 03:18:29,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:29,017 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 394 transitions. [2020-10-15 03:18:29,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:18:29,017 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 394 transitions. [2020-10-15 03:18:29,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:18:29,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:29,018 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] [2020-10-15 03:18:29,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:18:29,019 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:29,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:29,019 INFO L82 PathProgramCache]: Analyzing trace with hash -918531139, now seen corresponding path program 1 times [2020-10-15 03:18:29,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:29,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134692721] [2020-10-15 03:18:29,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:29,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:29,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:29,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:29,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:29,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:29,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:29,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:29,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:29,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:30,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:30,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:30,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:30,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:32,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:34,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:34,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:18:34,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:18:34,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:18:34,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:34,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:34,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:18:34,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:18:34,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 03:18:34,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:18:34,374 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:18:34,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:34,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:34,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:34,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:34,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:34,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:18:34,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:34,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:34,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:34,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:34,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:18:34,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:18:34,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134692721] [2020-10-15 03:18:34,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:34,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:18:34,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227536957] [2020-10-15 03:18:34,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:18:34,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:34,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:18:34,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:18:34,407 INFO L87 Difference]: Start difference. First operand 276 states and 394 transitions. Second operand 9 states. [2020-10-15 03:18:34,543 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-15 03:18:37,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:37,088 INFO L93 Difference]: Finished difference Result 2921 states and 4385 transitions. [2020-10-15 03:18:37,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 03:18:37,089 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-10-15 03:18:37,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:37,104 INFO L225 Difference]: With dead ends: 2921 [2020-10-15 03:18:37,104 INFO L226 Difference]: Without dead ends: 2728 [2020-10-15 03:18:37,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2020-10-15 03:18:37,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2728 states. [2020-10-15 03:18:37,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2728 to 317. [2020-10-15 03:18:37,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-10-15 03:18:37,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 443 transitions. [2020-10-15 03:18:37,176 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 443 transitions. Word has length 70 [2020-10-15 03:18:37,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:37,176 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 443 transitions. [2020-10-15 03:18:37,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:18:37,176 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 443 transitions. [2020-10-15 03:18:37,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:18:37,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:37,177 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] [2020-10-15 03:18:37,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:18:37,178 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:37,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:37,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1104897693, now seen corresponding path program 1 times [2020-10-15 03:18:37,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:37,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123769336] [2020-10-15 03:18:37,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:37,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:37,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:37,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:37,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:37,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:37,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:37,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:38,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:38,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:38,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:38,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:39,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:39,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:39,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:42,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:42,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:18:42,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:18:42,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:18:42,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:42,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:42,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:18:42,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:18:42,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:18:42,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:18:42,389 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:18:42,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:42,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:42,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:42,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:42,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:42,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:18:42,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:42,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:42,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:18:42,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:42,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:18:42,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:18:42,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123769336] [2020-10-15 03:18:42,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:42,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:18:42,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848909784] [2020-10-15 03:18:42,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:18:42,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:42,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:18:42,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:18:42,430 INFO L87 Difference]: Start difference. First operand 317 states and 443 transitions. Second operand 6 states. [2020-10-15 03:18:42,586 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-15 03:18:43,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:43,119 INFO L93 Difference]: Finished difference Result 584 states and 832 transitions. [2020-10-15 03:18:43,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:18:43,120 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-15 03:18:43,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:43,122 INFO L225 Difference]: With dead ends: 584 [2020-10-15 03:18:43,122 INFO L226 Difference]: Without dead ends: 317 [2020-10-15 03:18:43,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:18:43,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-15 03:18:43,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2020-10-15 03:18:43,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-10-15 03:18:43,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 437 transitions. [2020-10-15 03:18:43,175 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 437 transitions. Word has length 70 [2020-10-15 03:18:43,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:43,175 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 437 transitions. [2020-10-15 03:18:43,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:18:43,175 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 437 transitions. [2020-10-15 03:18:43,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:18:43,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:43,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:18:43,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:18:43,177 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:43,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:43,178 INFO L82 PathProgramCache]: Analyzing trace with hash -441636832, now seen corresponding path program 1 times [2020-10-15 03:18:43,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:43,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791965217] [2020-10-15 03:18:43,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:43,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:43,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:43,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:43,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:43,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:43,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:44,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:44,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:44,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:44,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:45,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:45,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:45,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:46,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:46,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:46,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:46,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:48,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:48,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:48,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:18:48,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 03:18:48,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:18:48,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:48,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:48,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:18:48,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:18:48,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 03:18:48,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:48,354 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-15 03:18:48,528 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:18:48,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:48,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:48,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:48,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:48,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:48,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:18:48,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:48,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:48,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:48,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:18:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:18:48,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791965217] [2020-10-15 03:18:48,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:48,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:18:48,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690977572] [2020-10-15 03:18:48,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:18:48,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:48,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:18:48,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:18:48,565 INFO L87 Difference]: Start difference. First operand 317 states and 437 transitions. Second operand 8 states. [2020-10-15 03:18:48,854 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-15 03:18:49,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:49,907 INFO L93 Difference]: Finished difference Result 741 states and 1057 transitions. [2020-10-15 03:18:49,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:18:49,908 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-10-15 03:18:49,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:49,916 INFO L225 Difference]: With dead ends: 741 [2020-10-15 03:18:49,916 INFO L226 Difference]: Without dead ends: 506 [2020-10-15 03:18:49,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:18:49,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-10-15 03:18:49,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 317. [2020-10-15 03:18:49,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-10-15 03:18:49,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 435 transitions. [2020-10-15 03:18:49,995 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 435 transitions. Word has length 71 [2020-10-15 03:18:49,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:49,995 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 435 transitions. [2020-10-15 03:18:49,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:18:49,995 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 435 transitions. [2020-10-15 03:18:49,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:18:49,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:49,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:18:49,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:18:49,997 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:49,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:49,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1282736703, now seen corresponding path program 1 times [2020-10-15 03:18:49,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:49,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139449757] [2020-10-15 03:18:49,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:50,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:50,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:50,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:50,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:50,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:50,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:50,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:51,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:51,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:55,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:55,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:18:55,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:18:55,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:18:55,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:55,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:55,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:18:55,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:18:55,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 03:18:55,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:55,225 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:18:55,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:55,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:55,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:55,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:55,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:55,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:18:55,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:55,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:55,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:55,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:55,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:55,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:18:55,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:18:55,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139449757] [2020-10-15 03:18:55,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:55,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:18:55,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331114144] [2020-10-15 03:18:55,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:18:55,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:55,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:18:55,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:18:55,271 INFO L87 Difference]: Start difference. First operand 317 states and 435 transitions. Second operand 6 states. [2020-10-15 03:18:55,416 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-15 03:18:57,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:57,182 INFO L93 Difference]: Finished difference Result 1578 states and 2275 transitions. [2020-10-15 03:18:57,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:18:57,182 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-15 03:18:57,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:57,189 INFO L225 Difference]: With dead ends: 1578 [2020-10-15 03:18:57,189 INFO L226 Difference]: Without dead ends: 1362 [2020-10-15 03:18:57,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:18:57,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2020-10-15 03:18:57,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 973. [2020-10-15 03:18:57,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2020-10-15 03:18:57,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1380 transitions. [2020-10-15 03:18:57,374 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1380 transitions. Word has length 71 [2020-10-15 03:18:57,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:57,374 INFO L479 AbstractCegarLoop]: Abstraction has 973 states and 1380 transitions. [2020-10-15 03:18:57,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:18:57,374 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1380 transitions. [2020-10-15 03:18:57,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:18:57,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:57,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:18:57,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:18:57,376 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:57,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:57,376 INFO L82 PathProgramCache]: Analyzing trace with hash -969786353, now seen corresponding path program 1 times [2020-10-15 03:18:57,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:57,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589883997] [2020-10-15 03:18:57,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:57,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:57,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:57,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:57,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:57,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:57,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:58,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:58,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:58,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:58,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:58,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:59,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:59,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:59,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:02,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:02,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:19:02,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:19:02,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:19:02,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:02,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:02,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:19:02,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:19:02,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 03:19:02,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:02,754 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:19:02,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:19:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:02,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:02,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:02,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:19:02,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:19:02,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:19:02,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:02,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:02,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:19:02,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:19:02,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:19:02,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:02,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:19:02,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589883997] [2020-10-15 03:19:02,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:19:02,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:19:02,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560878400] [2020-10-15 03:19:02,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:19:02,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:19:02,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:19:02,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:19:02,779 INFO L87 Difference]: Start difference. First operand 973 states and 1380 transitions. Second operand 9 states. [2020-10-15 03:19:02,983 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:19:05,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:19:05,428 INFO L93 Difference]: Finished difference Result 2075 states and 2983 transitions. [2020-10-15 03:19:05,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 03:19:05,429 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-15 03:19:05,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:19:05,435 INFO L225 Difference]: With dead ends: 2075 [2020-10-15 03:19:05,435 INFO L226 Difference]: Without dead ends: 1385 [2020-10-15 03:19:05,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-10-15 03:19:05,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2020-10-15 03:19:05,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 973. [2020-10-15 03:19:05,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2020-10-15 03:19:05,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1372 transitions. [2020-10-15 03:19:05,677 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1372 transitions. Word has length 72 [2020-10-15 03:19:05,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:19:05,678 INFO L479 AbstractCegarLoop]: Abstraction has 973 states and 1372 transitions. [2020-10-15 03:19:05,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:19:05,678 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1372 transitions. [2020-10-15 03:19:05,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:19:05,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:19:05,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:19:05,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:19:05,680 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:19:05,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:19:05,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1807812933, now seen corresponding path program 1 times [2020-10-15 03:19:05,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:19:05,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461676305] [2020-10-15 03:19:05,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:19:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:05,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:05,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:05,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:06,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:06,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:06,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:06,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:06,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:06,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:06,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:06,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:07,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:09,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:09,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:10,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:10,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:10,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:10,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:10,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:10,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:19:10,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 03:19:10,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:19:10,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:10,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:10,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:19:10,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:19:10,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 03:19:10,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:10,963 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:19:10,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:19:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:10,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:10,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:10,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:19:10,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:19:10,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:19:10,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:10,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:10,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:19:10,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:19:10,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:19:10,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:11,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:19:11,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461676305] [2020-10-15 03:19:11,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:19:11,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:19:11,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760431623] [2020-10-15 03:19:11,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:19:11,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:19:11,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:19:11,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:19:11,007 INFO L87 Difference]: Start difference. First operand 973 states and 1372 transitions. Second operand 9 states. [2020-10-15 03:19:11,145 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-15 03:19:12,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:19:12,658 INFO L93 Difference]: Finished difference Result 2834 states and 4100 transitions. [2020-10-15 03:19:12,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 03:19:12,659 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-15 03:19:12,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:19:12,668 INFO L225 Difference]: With dead ends: 2834 [2020-10-15 03:19:12,669 INFO L226 Difference]: Without dead ends: 2054 [2020-10-15 03:19:12,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:19:12,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2020-10-15 03:19:12,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 943. [2020-10-15 03:19:12,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2020-10-15 03:19:12,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1319 transitions. [2020-10-15 03:19:12,975 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1319 transitions. Word has length 72 [2020-10-15 03:19:12,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:19:12,976 INFO L479 AbstractCegarLoop]: Abstraction has 943 states and 1319 transitions. [2020-10-15 03:19:12,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:19:12,976 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1319 transitions. [2020-10-15 03:19:12,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:19:12,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:19:12,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:19:12,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:19:12,978 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:19:12,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:19:12,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1375628105, now seen corresponding path program 1 times [2020-10-15 03:19:12,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:19:12,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070429864] [2020-10-15 03:19:12,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:19:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:13,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:13,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:13,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:13,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:14,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:18,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:18,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:19:18,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:19:18,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:19:18,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:18,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:18,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:19:18,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-15 03:19:18,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 03:19:18,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:18,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:19:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:18,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:18,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:18,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:19:18,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:19:18,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:19:18,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:18,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:18,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:19:18,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:19:18,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:19:18,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:18,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:19:18,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070429864] [2020-10-15 03:19:18,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:19:18,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:19:18,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827392964] [2020-10-15 03:19:18,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:19:18,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:19:18,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:19:18,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:19:18,158 INFO L87 Difference]: Start difference. First operand 943 states and 1319 transitions. Second operand 6 states. [2020-10-15 03:19:18,327 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-15 03:19:19,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:19:19,209 INFO L93 Difference]: Finished difference Result 2378 states and 3431 transitions. [2020-10-15 03:19:19,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:19:19,211 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-15 03:19:19,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:19:19,217 INFO L225 Difference]: With dead ends: 2378 [2020-10-15 03:19:19,218 INFO L226 Difference]: Without dead ends: 1648 [2020-10-15 03:19:19,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:19:19,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2020-10-15 03:19:19,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1644. [2020-10-15 03:19:19,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1644 states. [2020-10-15 03:19:19,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2344 transitions. [2020-10-15 03:19:19,625 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2344 transitions. Word has length 73 [2020-10-15 03:19:19,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:19:19,626 INFO L479 AbstractCegarLoop]: Abstraction has 1644 states and 2344 transitions. [2020-10-15 03:19:19,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:19:19,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2344 transitions. [2020-10-15 03:19:19,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:19:19,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:19:19,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:19:19,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:19:19,628 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:19:19,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:19:19,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1786832650, now seen corresponding path program 1 times [2020-10-15 03:19:19,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:19:19,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626259339] [2020-10-15 03:19:19,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:19:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:19,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:19,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:20,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:20,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:23,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:23,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:19:23,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:19:23,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4156 [2020-10-15 03:19:23,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:23,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:23,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:19:23,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:19:23,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 03:19:23,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:23,945 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:19:23,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:19:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:23,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:23,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:23,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:19:23,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:19:23,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:19:23,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:23,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:19:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:19:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:19:23,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:23,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:19:23,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626259339] [2020-10-15 03:19:23,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:19:23,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:19:23,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522854757] [2020-10-15 03:19:23,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:19:23,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:19:23,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:19:23,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:19:23,969 INFO L87 Difference]: Start difference. First operand 1644 states and 2344 transitions. Second operand 6 states. [2020-10-15 03:19:24,131 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-15 03:19:25,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:19:25,115 INFO L93 Difference]: Finished difference Result 3350 states and 4854 transitions. [2020-10-15 03:19:25,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:19:25,115 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-15 03:19:25,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:19:25,123 INFO L225 Difference]: With dead ends: 3350 [2020-10-15 03:19:25,123 INFO L226 Difference]: Without dead ends: 2425 [2020-10-15 03:19:25,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:19:25,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2020-10-15 03:19:25,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2091. [2020-10-15 03:19:25,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2091 states. [2020-10-15 03:19:25,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2091 states to 2091 states and 3010 transitions. [2020-10-15 03:19:25,595 INFO L78 Accepts]: Start accepts. Automaton has 2091 states and 3010 transitions. Word has length 73 [2020-10-15 03:19:25,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:19:25,595 INFO L479 AbstractCegarLoop]: Abstraction has 2091 states and 3010 transitions. [2020-10-15 03:19:25,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:19:25,596 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 3010 transitions. [2020-10-15 03:19:25,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:19:25,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:19:25,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:19:25,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:19:25,598 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:19:25,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:19:25,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1023842361, now seen corresponding path program 1 times [2020-10-15 03:19:25,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:19:25,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777903875] [2020-10-15 03:19:25,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:19:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:25,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:25,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:25,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:25,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:25,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:30,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:30,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:19:30,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:19:30,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-15 03:19:30,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:30,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:30,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:19:30,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-15 03:19:30,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 03:19:30,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:30,802 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:19:30,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:19:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:30,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:30,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:30,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:19:30,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:19:30,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 03:19:30,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:30,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:30,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:19:30,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:19:30,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:19:30,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:19:30,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:19:30,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777903875] [2020-10-15 03:19:30,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:19:30,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:19:30,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109292790] [2020-10-15 03:19:30,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:19:30,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:19:30,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:19:30,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:19:30,852 INFO L87 Difference]: Start difference. First operand 2091 states and 3010 transitions. Second operand 6 states. [2020-10-15 03:19:32,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:19:32,009 INFO L93 Difference]: Finished difference Result 4636 states and 6732 transitions. [2020-10-15 03:19:32,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:19:32,010 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-15 03:19:32,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:19:32,023 INFO L225 Difference]: With dead ends: 4636 [2020-10-15 03:19:32,023 INFO L226 Difference]: Without dead ends: 2820 [2020-10-15 03:19:32,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:19:32,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2820 states. [2020-10-15 03:19:32,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2820 to 2454. [2020-10-15 03:19:32,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2454 states. [2020-10-15 03:19:32,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2454 states to 2454 states and 3545 transitions. [2020-10-15 03:19:32,579 INFO L78 Accepts]: Start accepts. Automaton has 2454 states and 3545 transitions. Word has length 73 [2020-10-15 03:19:32,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:19:32,579 INFO L479 AbstractCegarLoop]: Abstraction has 2454 states and 3545 transitions. [2020-10-15 03:19:32,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:19:32,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2454 states and 3545 transitions. [2020-10-15 03:19:32,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:19:32,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:19:32,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:19:32,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:19:32,581 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:19:32,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:19:32,581 INFO L82 PathProgramCache]: Analyzing trace with hash -925023955, now seen corresponding path program 1 times [2020-10-15 03:19:32,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:19:32,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377938887] [2020-10-15 03:19:32,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:19:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:32,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:32,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:32,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:32,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:33,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:33,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:19:33,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:19:33,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1142 [2020-10-15 03:19:33,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:33,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:33,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:19:33,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:19:33,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 03:19:33,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:33,883 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:19:33,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:19:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:33,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:33,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:33,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:19:33,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:19:33,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:19:33,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:33,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:33,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:19:33,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:19:33,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:19:33,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:33,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:19:33,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377938887] [2020-10-15 03:19:33,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:19:33,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:19:33,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951096110] [2020-10-15 03:19:33,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:19:33,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:19:33,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:19:33,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:19:33,915 INFO L87 Difference]: Start difference. First operand 2454 states and 3545 transitions. Second operand 6 states. [2020-10-15 03:19:34,100 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-15 03:19:35,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:19:35,226 INFO L93 Difference]: Finished difference Result 3540 states and 5157 transitions. [2020-10-15 03:19:35,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:19:35,227 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-15 03:19:35,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:19:35,235 INFO L225 Difference]: With dead ends: 3540 [2020-10-15 03:19:35,235 INFO L226 Difference]: Without dead ends: 1839 [2020-10-15 03:19:35,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:19:35,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2020-10-15 03:19:35,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1296. [2020-10-15 03:19:35,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1296 states. [2020-10-15 03:19:35,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1862 transitions. [2020-10-15 03:19:35,549 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1862 transitions. Word has length 73 [2020-10-15 03:19:35,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:19:35,550 INFO L479 AbstractCegarLoop]: Abstraction has 1296 states and 1862 transitions. [2020-10-15 03:19:35,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:19:35,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1862 transitions. [2020-10-15 03:19:35,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:19:35,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:19:35,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:19:35,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:19:35,551 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:19:35,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:19:35,552 INFO L82 PathProgramCache]: Analyzing trace with hash -400269564, now seen corresponding path program 1 times [2020-10-15 03:19:35,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:19:35,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722804154] [2020-10-15 03:19:35,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:19:35,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:35,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:35,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:35,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:35,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:36,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:40,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:40,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:19:40,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:19:40,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:19:40,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:40,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:40,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:19:40,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:19:40,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 03:19:40,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:40,971 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:19:40,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:19:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:40,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:40,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:40,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:19:40,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:19:40,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:19:40,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:40,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:40,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:19:40,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:19:40,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:19:40,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:41,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:19:41,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722804154] [2020-10-15 03:19:41,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:19:41,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:19:41,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978818796] [2020-10-15 03:19:41,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:19:41,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:19:41,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:19:41,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:19:41,004 INFO L87 Difference]: Start difference. First operand 1296 states and 1862 transitions. Second operand 9 states. [2020-10-15 03:19:41,187 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-15 03:19:42,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:19:42,618 INFO L93 Difference]: Finished difference Result 3257 states and 4759 transitions. [2020-10-15 03:19:42,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:19:42,618 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 74 [2020-10-15 03:19:42,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:19:42,627 INFO L225 Difference]: With dead ends: 3257 [2020-10-15 03:19:42,628 INFO L226 Difference]: Without dead ends: 2292 [2020-10-15 03:19:42,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:19:42,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2292 states. [2020-10-15 03:19:42,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2292 to 1206. [2020-10-15 03:19:42,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1206 states. [2020-10-15 03:19:42,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1738 transitions. [2020-10-15 03:19:42,942 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1738 transitions. Word has length 74 [2020-10-15 03:19:42,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:19:42,943 INFO L479 AbstractCegarLoop]: Abstraction has 1206 states and 1738 transitions. [2020-10-15 03:19:42,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:19:42,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1738 transitions. [2020-10-15 03:19:42,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:19:42,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:19:42,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:19:42,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:19:42,945 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:19:42,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:19:42,945 INFO L82 PathProgramCache]: Analyzing trace with hash -24286803, now seen corresponding path program 1 times [2020-10-15 03:19:42,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:19:42,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385191471] [2020-10-15 03:19:42,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:19:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:42,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:43,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:43,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:44,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:44,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:19:44,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:19:44,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1776 [2020-10-15 03:19:44,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:44,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:44,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:19:44,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:19:44,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 03:19:44,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:45,093 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:19:45,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:19:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:45,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:45,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:45,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:19:45,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:19:45,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:19:45,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:45,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:45,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:19:45,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:19:45,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:19:45,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:45,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:19:45,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385191471] [2020-10-15 03:19:45,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:19:45,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:19:45,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780057762] [2020-10-15 03:19:45,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:19:45,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:19:45,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:19:45,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:19:45,120 INFO L87 Difference]: Start difference. First operand 1206 states and 1738 transitions. Second operand 10 states. [2020-10-15 03:19:45,293 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-15 03:19:46,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:19:46,298 INFO L93 Difference]: Finished difference Result 2290 states and 3337 transitions. [2020-10-15 03:19:46,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:19:46,305 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-10-15 03:19:46,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:19:46,312 INFO L225 Difference]: With dead ends: 2290 [2020-10-15 03:19:46,312 INFO L226 Difference]: Without dead ends: 1186 [2020-10-15 03:19:46,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-15 03:19:46,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2020-10-15 03:19:46,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1186. [2020-10-15 03:19:46,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1186 states. [2020-10-15 03:19:46,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1711 transitions. [2020-10-15 03:19:46,657 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1711 transitions. Word has length 75 [2020-10-15 03:19:46,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:19:46,658 INFO L479 AbstractCegarLoop]: Abstraction has 1186 states and 1711 transitions. [2020-10-15 03:19:46,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:19:46,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1711 transitions. [2020-10-15 03:19:46,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:19:46,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:19:46,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:19:46,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:19:46,659 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:19:46,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:19:46,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1575607802, now seen corresponding path program 1 times [2020-10-15 03:19:46,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:19:46,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128211948] [2020-10-15 03:19:46,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:19:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:46,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:46,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:46,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:46,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:19:46,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:19:46,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-15 03:19:46,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:46,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:46,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:19:46,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:19:46,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 03:19:46,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:47,138 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:19:47,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:19:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:47,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:47,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:47,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:19:47,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:19:47,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:19:47,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:47,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:47,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:19:47,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:19:47,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:19:47,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:47,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:19:47,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128211948] [2020-10-15 03:19:47,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:19:47,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:19:47,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774426635] [2020-10-15 03:19:47,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:19:47,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:19:47,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:19:47,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:19:47,171 INFO L87 Difference]: Start difference. First operand 1186 states and 1711 transitions. Second operand 6 states. [2020-10-15 03:19:47,322 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-15 03:19:48,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:19:48,548 INFO L93 Difference]: Finished difference Result 3314 states and 4872 transitions. [2020-10-15 03:19:48,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:19:48,548 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-10-15 03:19:48,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:19:48,556 INFO L225 Difference]: With dead ends: 3314 [2020-10-15 03:19:48,557 INFO L226 Difference]: Without dead ends: 2201 [2020-10-15 03:19:48,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:19:48,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2201 states. [2020-10-15 03:19:48,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2201 to 2199. [2020-10-15 03:19:48,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2199 states. [2020-10-15 03:19:49,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 3215 transitions. [2020-10-15 03:19:49,000 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 3215 transitions. Word has length 75 [2020-10-15 03:19:49,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:19:49,001 INFO L479 AbstractCegarLoop]: Abstraction has 2199 states and 3215 transitions. [2020-10-15 03:19:49,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:19:49,001 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 3215 transitions. [2020-10-15 03:19:49,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 03:19:49,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:19:49,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:19:49,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 03:19:49,002 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:19:49,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:19:49,002 INFO L82 PathProgramCache]: Analyzing trace with hash -754889942, now seen corresponding path program 1 times [2020-10-15 03:19:49,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:19:49,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021115144] [2020-10-15 03:19:49,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:19:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:49,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:49,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:49,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:49,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:49,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:50,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:50,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 03:19:50,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:19:50,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1253 [2020-10-15 03:19:50,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:50,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:50,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:19:50,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:19:50,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 03:19:50,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:50,430 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 24 [2020-10-15 03:19:50,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:19:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:50,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:50,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:50,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:19:50,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:19:50,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:19:50,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:50,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:50,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:19:50,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:19:50,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:19:50,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:50,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:19:50,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021115144] [2020-10-15 03:19:50,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:19:50,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:19:50,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255074687] [2020-10-15 03:19:50,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:19:50,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:19:50,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:19:50,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:19:50,580 INFO L87 Difference]: Start difference. First operand 2199 states and 3215 transitions. Second operand 9 states. [2020-10-15 03:19:50,733 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:19:52,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:19:52,511 INFO L93 Difference]: Finished difference Result 5379 states and 7893 transitions. [2020-10-15 03:19:52,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 03:19:52,512 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2020-10-15 03:19:52,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:19:52,521 INFO L225 Difference]: With dead ends: 5379 [2020-10-15 03:19:52,521 INFO L226 Difference]: Without dead ends: 3259 [2020-10-15 03:19:52,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:19:52,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3259 states. [2020-10-15 03:19:53,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3259 to 2199. [2020-10-15 03:19:53,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2199 states. [2020-10-15 03:19:53,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 3213 transitions. [2020-10-15 03:19:53,090 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 3213 transitions. Word has length 76 [2020-10-15 03:19:53,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:19:53,090 INFO L479 AbstractCegarLoop]: Abstraction has 2199 states and 3213 transitions. [2020-10-15 03:19:53,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:19:53,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 3213 transitions. [2020-10-15 03:19:53,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 03:19:53,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:19:53,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:19:53,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 03:19:53,091 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:19:53,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:19:53,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1192230335, now seen corresponding path program 1 times [2020-10-15 03:19:53,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:19:53,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744718739] [2020-10-15 03:19:53,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:19:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:53,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:53,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:53,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:54,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:54,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 03:19:54,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:19:54,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1546 [2020-10-15 03:19:54,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:54,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:54,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 03:19:54,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:19:54,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 03:19:54,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:55,228 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2020-10-15 03:19:56,024 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:19:56,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:19:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:56,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:56,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:56,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:19:56,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:19:56,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:19:56,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:56,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:56,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:19:56,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:19:56,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:19:56,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:56,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:19:56,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744718739] [2020-10-15 03:19:56,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:19:56,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-10-15 03:19:56,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933340702] [2020-10-15 03:19:56,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-15 03:19:56,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:19:56,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-15 03:19:56,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2020-10-15 03:19:56,086 INFO L87 Difference]: Start difference. First operand 2199 states and 3213 transitions. Second operand 23 states. [2020-10-15 03:19:56,259 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2020-10-15 03:19:56,780 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 159 [2020-10-15 03:19:57,730 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 54 [2020-10-15 03:19:57,964 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 60 [2020-10-15 03:19:58,306 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 78 [2020-10-15 03:19:58,655 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 84 [2020-10-15 03:19:59,111 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 100 [2020-10-15 03:19:59,284 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2020-10-15 03:19:59,472 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2020-10-15 03:19:59,664 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2020-10-15 03:19:59,976 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2020-10-15 03:20:07,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:20:07,070 INFO L93 Difference]: Finished difference Result 16270 states and 23966 transitions. [2020-10-15 03:20:07,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 03:20:07,071 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 77 [2020-10-15 03:20:07,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:20:07,100 INFO L225 Difference]: With dead ends: 16270 [2020-10-15 03:20:07,100 INFO L226 Difference]: Without dead ends: 14150 [2020-10-15 03:20:07,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=289, Invalid=1691, Unknown=0, NotChecked=0, Total=1980 [2020-10-15 03:20:07,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14150 states. [2020-10-15 03:20:07,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14150 to 2212. [2020-10-15 03:20:07,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2212 states. [2020-10-15 03:20:07,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 3228 transitions. [2020-10-15 03:20:07,848 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 3228 transitions. Word has length 77 [2020-10-15 03:20:07,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:20:07,848 INFO L479 AbstractCegarLoop]: Abstraction has 2212 states and 3228 transitions. [2020-10-15 03:20:07,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-15 03:20:07,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 3228 transitions. [2020-10-15 03:20:07,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 03:20:07,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:20:07,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:20:07,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 03:20:07,850 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:20:07,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:20:07,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1565463601, now seen corresponding path program 1 times [2020-10-15 03:20:07,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:20:07,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781412632] [2020-10-15 03:20:07,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:20:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:20:07,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:07,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:20:07,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 03:20:07,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:20:07,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-15 03:20:07,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:20:07,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:20:07,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:20:07,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-15 03:20:07,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:20:07,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:20:08,146 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:20:08,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:20:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:20:08,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:08,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:20:08,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:20:08,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:20:08,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:20:08,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:20:08,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:20:08,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:20:08,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:20:08,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:20:08,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:20:08,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:20:08,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781412632] [2020-10-15 03:20:08,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:20:08,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:20:08,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860244734] [2020-10-15 03:20:08,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:20:08,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:20:08,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:20:08,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:20:08,180 INFO L87 Difference]: Start difference. First operand 2212 states and 3228 transitions. Second operand 5 states. [2020-10-15 03:20:09,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:20:09,986 INFO L93 Difference]: Finished difference Result 3746 states and 5465 transitions. [2020-10-15 03:20:09,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:20:09,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-15 03:20:09,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:20:09,997 INFO L225 Difference]: With dead ends: 3746 [2020-10-15 03:20:09,997 INFO L226 Difference]: Without dead ends: 3744 [2020-10-15 03:20:09,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:20:10,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2020-10-15 03:20:10,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 2260. [2020-10-15 03:20:10,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2260 states. [2020-10-15 03:20:10,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2260 states to 2260 states and 3272 transitions. [2020-10-15 03:20:10,734 INFO L78 Accepts]: Start accepts. Automaton has 2260 states and 3272 transitions. Word has length 78 [2020-10-15 03:20:10,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:20:10,734 INFO L479 AbstractCegarLoop]: Abstraction has 2260 states and 3272 transitions. [2020-10-15 03:20:10,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:20:10,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2260 states and 3272 transitions. [2020-10-15 03:20:10,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 03:20:10,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:20:10,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:20:10,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 03:20:10,736 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:20:10,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:20:10,736 INFO L82 PathProgramCache]: Analyzing trace with hash -591633424, now seen corresponding path program 1 times [2020-10-15 03:20:10,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:20:10,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104204665] [2020-10-15 03:20:10,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:20:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:20:10,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:10,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:11,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:20:11,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 03:20:11,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:20:11,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-15 03:20:11,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:20:11,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:20:11,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:20:11,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:20:11,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 03:20:11,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:20:11,312 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-15 03:20:11,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:20:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:20:11,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:11,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:20:11,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:20:11,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:20:11,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:20:11,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:20:11,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:20:11,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:20:11,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:20:11,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:20:11,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:20:11,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:20:11,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104204665] [2020-10-15 03:20:11,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:20:11,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:20:11,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120864351] [2020-10-15 03:20:11,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:20:11,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:20:11,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:20:11,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:20:11,483 INFO L87 Difference]: Start difference. First operand 2260 states and 3272 transitions. Second operand 10 states. [2020-10-15 03:20:11,625 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-15 03:20:13,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:20:13,650 INFO L93 Difference]: Finished difference Result 5510 states and 8014 transitions. [2020-10-15 03:20:13,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:20:13,650 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-10-15 03:20:13,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:20:13,655 INFO L225 Difference]: With dead ends: 5510 [2020-10-15 03:20:13,655 INFO L226 Difference]: Without dead ends: 3342 [2020-10-15 03:20:13,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:20:13,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3342 states. [2020-10-15 03:20:14,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3342 to 2257. [2020-10-15 03:20:14,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2257 states. [2020-10-15 03:20:14,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3267 transitions. [2020-10-15 03:20:14,455 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3267 transitions. Word has length 78 [2020-10-15 03:20:14,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:20:14,455 INFO L479 AbstractCegarLoop]: Abstraction has 2257 states and 3267 transitions. [2020-10-15 03:20:14,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:20:14,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3267 transitions. [2020-10-15 03:20:14,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-15 03:20:14,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:20:14,458 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:20:14,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 03:20:14,458 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:20:14,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:20:14,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1232676612, now seen corresponding path program 1 times [2020-10-15 03:20:14,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:20:14,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304416571] [2020-10-15 03:20:14,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:20:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:20:14,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:14,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:14,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:14,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:14,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:14,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:14,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:14,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:15,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:15,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:15,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:17,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:17,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:17,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:17,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:19,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:20:19,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-15 03:20:19,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 03:20:19,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:20:19,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:20:19,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:20:19,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:20:19,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-15 03:20:19,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-15 03:20:19,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:20:19,629 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:20:19,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:20:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:20:19,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:19,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:20:19,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:20:19,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:20:19,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:20:19,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:20:19,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:20:19,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:20:19,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:20:19,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:20:19,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:20:19,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:20:19,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304416571] [2020-10-15 03:20:19,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:20:19,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 03:20:19,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020296271] [2020-10-15 03:20:19,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:20:19,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:20:19,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:20:19,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:20:19,655 INFO L87 Difference]: Start difference. First operand 2257 states and 3267 transitions. Second operand 6 states. [2020-10-15 03:20:19,803 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-15 03:20:21,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:20:21,178 INFO L93 Difference]: Finished difference Result 5247 states and 7608 transitions. [2020-10-15 03:20:21,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:20:21,179 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-15 03:20:21,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:20:21,182 INFO L225 Difference]: With dead ends: 5247 [2020-10-15 03:20:21,182 INFO L226 Difference]: Without dead ends: 3081 [2020-10-15 03:20:21,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:20:21,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3081 states. [2020-10-15 03:20:21,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3081 to 2617. [2020-10-15 03:20:21,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2617 states. [2020-10-15 03:20:21,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2617 states to 2617 states and 3795 transitions. [2020-10-15 03:20:21,994 INFO L78 Accepts]: Start accepts. Automaton has 2617 states and 3795 transitions. Word has length 101 [2020-10-15 03:20:21,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:20:21,994 INFO L479 AbstractCegarLoop]: Abstraction has 2617 states and 3795 transitions. [2020-10-15 03:20:21,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:20:21,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2617 states and 3795 transitions. [2020-10-15 03:20:21,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 03:20:21,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:20:21,996 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:20:21,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 03:20:21,997 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:20:21,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:20:21,997 INFO L82 PathProgramCache]: Analyzing trace with hash 295152400, now seen corresponding path program 1 times [2020-10-15 03:20:21,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:20:21,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049608848] [2020-10-15 03:20:21,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:20:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:20:22,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:22,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:22,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:22,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:22,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:22,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:23,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:20:23,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 03:20:23,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:20:23,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1089 [2020-10-15 03:20:23,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:20:23,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:20:23,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:20:23,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:20:23,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-15 03:20:23,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:20:23,301 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:20:23,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:20:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:20:23,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:23,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:20:23,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:20:23,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:20:23,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:20:23,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:20:23,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:20:23,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:20:23,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:20:23,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:20:23,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:20:23,330 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:20:23,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049608848] [2020-10-15 03:20:23,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:20:23,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 03:20:23,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437199211] [2020-10-15 03:20:23,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:20:23,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:20:23,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:20:23,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:20:23,331 INFO L87 Difference]: Start difference. First operand 2617 states and 3795 transitions. Second operand 6 states. [2020-10-15 03:20:23,464 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-15 03:20:25,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:20:25,126 INFO L93 Difference]: Finished difference Result 5411 states and 7930 transitions. [2020-10-15 03:20:25,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:20:25,127 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-15 03:20:25,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:20:25,131 INFO L225 Difference]: With dead ends: 5411 [2020-10-15 03:20:25,132 INFO L226 Difference]: Without dead ends: 3865 [2020-10-15 03:20:25,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:20:25,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2020-10-15 03:20:26,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 3861. [2020-10-15 03:20:26,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3861 states. [2020-10-15 03:20:26,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3861 states to 3861 states and 5607 transitions. [2020-10-15 03:20:26,262 INFO L78 Accepts]: Start accepts. Automaton has 3861 states and 5607 transitions. Word has length 102 [2020-10-15 03:20:26,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:20:26,262 INFO L479 AbstractCegarLoop]: Abstraction has 3861 states and 5607 transitions. [2020-10-15 03:20:26,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:20:26,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3861 states and 5607 transitions. [2020-10-15 03:20:26,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 03:20:26,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:20:26,264 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:20:26,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 03:20:26,265 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:20:26,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:20:26,265 INFO L82 PathProgramCache]: Analyzing trace with hash -197730635, now seen corresponding path program 1 times [2020-10-15 03:20:26,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:20:26,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107764153] [2020-10-15 03:20:26,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:20:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:20:26,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:26,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:26,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:26,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:26,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:26,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:26,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:26,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:26,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:27,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:30,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:20:30,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 03:20:30,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:20:30,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3912 [2020-10-15 03:20:30,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:20:30,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:20:30,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:20:30,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:20:30,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 03:20:30,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:20:30,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:20:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:20:30,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:30,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:20:30,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:20:30,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:20:30,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:20:30,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:20:30,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:20:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:20:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:20:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:20:30,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:20:30,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:20:30,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107764153] [2020-10-15 03:20:30,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:20:30,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:20:30,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950308038] [2020-10-15 03:20:30,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:20:30,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:20:30,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:20:30,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:20:30,483 INFO L87 Difference]: Start difference. First operand 3861 states and 5607 transitions. Second operand 8 states. [2020-10-15 03:20:30,679 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-15 03:20:34,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:20:34,185 INFO L93 Difference]: Finished difference Result 13167 states and 19100 transitions. [2020-10-15 03:20:34,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:20:34,186 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2020-10-15 03:20:34,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:20:34,195 INFO L225 Difference]: With dead ends: 13167 [2020-10-15 03:20:34,195 INFO L226 Difference]: Without dead ends: 9397 [2020-10-15 03:20:34,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:20:34,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9397 states. [2020-10-15 03:20:35,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9397 to 4685. [2020-10-15 03:20:35,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4685 states. [2020-10-15 03:20:35,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4685 states to 4685 states and 6659 transitions. [2020-10-15 03:20:35,626 INFO L78 Accepts]: Start accepts. Automaton has 4685 states and 6659 transitions. Word has length 103 [2020-10-15 03:20:35,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:20:35,626 INFO L479 AbstractCegarLoop]: Abstraction has 4685 states and 6659 transitions. [2020-10-15 03:20:35,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:20:35,626 INFO L276 IsEmpty]: Start isEmpty. Operand 4685 states and 6659 transitions. [2020-10-15 03:20:35,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 03:20:35,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:20:35,629 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:20:35,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 03:20:35,629 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:20:35,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:20:35,629 INFO L82 PathProgramCache]: Analyzing trace with hash -509423956, now seen corresponding path program 1 times [2020-10-15 03:20:35,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:20:35,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724660857] [2020-10-15 03:20:35,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:20:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:20:35,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:35,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:35,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:35,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:36,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:20:36,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 03:20:36,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:20:36,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-10-15 03:20:36,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:20:36,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:20:36,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:20:36,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-15 03:20:36,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 03:20:36,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:20:36,387 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:20:36,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:20:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:20:36,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:36,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:20:36,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:20:36,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:20:36,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:20:36,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:20:36,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:20:36,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:20:36,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:20:36,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:20:36,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:20:36,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:20:36,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724660857] [2020-10-15 03:20:36,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:20:36,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:20:36,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059186857] [2020-10-15 03:20:36,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:20:36,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:20:36,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:20:36,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:20:36,416 INFO L87 Difference]: Start difference. First operand 4685 states and 6659 transitions. Second operand 4 states. [2020-10-15 03:20:36,558 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-15 03:20:39,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:20:39,142 INFO L93 Difference]: Finished difference Result 11605 states and 16469 transitions. [2020-10-15 03:20:39,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:20:39,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-15 03:20:39,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:20:39,149 INFO L225 Difference]: With dead ends: 11605 [2020-10-15 03:20:39,150 INFO L226 Difference]: Without dead ends: 7011 [2020-10-15 03:20:39,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:20:39,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7011 states. [2020-10-15 03:20:41,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7011 to 6757. [2020-10-15 03:20:41,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6757 states. [2020-10-15 03:20:41,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6757 states to 6757 states and 9571 transitions. [2020-10-15 03:20:41,265 INFO L78 Accepts]: Start accepts. Automaton has 6757 states and 9571 transitions. Word has length 103 [2020-10-15 03:20:41,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:20:41,265 INFO L479 AbstractCegarLoop]: Abstraction has 6757 states and 9571 transitions. [2020-10-15 03:20:41,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:20:41,266 INFO L276 IsEmpty]: Start isEmpty. Operand 6757 states and 9571 transitions. [2020-10-15 03:20:41,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-15 03:20:41,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:20:41,268 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:20:41,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 03:20:41,268 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:20:41,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:20:41,269 INFO L82 PathProgramCache]: Analyzing trace with hash -646356540, now seen corresponding path program 1 times [2020-10-15 03:20:41,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:20:41,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495123295] [2020-10-15 03:20:41,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:20:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:20:41,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:41,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:41,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:41,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:41,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:41,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:41,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:41,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:41,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:41,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:42,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:44,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:44,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:45,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:46,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:20:46,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-15 03:20:46,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:20:46,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:20:46,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:20:46,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:20:46,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:20:46,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:20:46,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-15 03:20:46,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:20:46,534 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:20:46,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:20:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:20:46,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:20:46,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:20:46,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:20:46,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:20:46,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:20:46,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:20:46,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:20:46,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:20:46,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:20:46,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:20:46,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:20:46,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:20:46,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495123295] [2020-10-15 03:20:46,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:20:46,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:20:46,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561766800] [2020-10-15 03:20:46,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:20:46,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:20:46,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:20:46,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:20:46,580 INFO L87 Difference]: Start difference. First operand 6757 states and 9571 transitions. Second operand 8 states. [2020-10-15 03:20:46,720 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-15 03:20:56,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:20:56,803 INFO L93 Difference]: Finished difference Result 34933 states and 48975 transitions. [2020-10-15 03:20:56,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:20:56,804 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2020-10-15 03:20:56,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:20:56,834 INFO L225 Difference]: With dead ends: 34933 [2020-10-15 03:20:56,834 INFO L226 Difference]: Without dead ends: 28267 [2020-10-15 03:20:56,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:20:56,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28267 states. [2020-10-15 03:21:01,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28267 to 14093. [2020-10-15 03:21:01,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14093 states. [2020-10-15 03:21:01,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14093 states to 14093 states and 19715 transitions. [2020-10-15 03:21:01,297 INFO L78 Accepts]: Start accepts. Automaton has 14093 states and 19715 transitions. Word has length 104 [2020-10-15 03:21:01,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:21:01,297 INFO L479 AbstractCegarLoop]: Abstraction has 14093 states and 19715 transitions. [2020-10-15 03:21:01,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:21:01,297 INFO L276 IsEmpty]: Start isEmpty. Operand 14093 states and 19715 transitions. [2020-10-15 03:21:01,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-15 03:21:01,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:21:01,299 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:21:01,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 03:21:01,300 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:21:01,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:21:01,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1712900094, now seen corresponding path program 1 times [2020-10-15 03:21:01,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:21:01,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237857111] [2020-10-15 03:21:01,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:21:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:21:01,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:01,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:01,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:01,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:01,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:01,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:01,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:01,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:02,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:02,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:02,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:02,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:02,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:06,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:21:06,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-15 03:21:06,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:21:06,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:21:06,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:21:06,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:21:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:21:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 03:21:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-15 03:21:06,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:21:06,487 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:21:06,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:21:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:21:06,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:06,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:21:06,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:21:06,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:21:06,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:21:06,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:21:06,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:21:06,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:21:06,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:21:06,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:21:06,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:21:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:21:06,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237857111] [2020-10-15 03:21:06,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:21:06,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:21:06,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005628935] [2020-10-15 03:21:06,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:21:06,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:21:06,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:21:06,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:21:06,510 INFO L87 Difference]: Start difference. First operand 14093 states and 19715 transitions. Second operand 8 states. [2020-10-15 03:21:06,658 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-15 03:21:29,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:21:29,583 INFO L93 Difference]: Finished difference Result 82930 states and 116365 transitions. [2020-10-15 03:21:29,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 03:21:29,584 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2020-10-15 03:21:29,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:21:29,658 INFO L225 Difference]: With dead ends: 82930 [2020-10-15 03:21:29,658 INFO L226 Difference]: Without dead ends: 68928 [2020-10-15 03:21:29,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-10-15 03:21:29,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68928 states. [2020-10-15 03:21:38,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68928 to 25835. [2020-10-15 03:21:38,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25835 states. [2020-10-15 03:21:38,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25835 states to 25835 states and 36571 transitions. [2020-10-15 03:21:38,229 INFO L78 Accepts]: Start accepts. Automaton has 25835 states and 36571 transitions. Word has length 104 [2020-10-15 03:21:38,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:21:38,229 INFO L479 AbstractCegarLoop]: Abstraction has 25835 states and 36571 transitions. [2020-10-15 03:21:38,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:21:38,229 INFO L276 IsEmpty]: Start isEmpty. Operand 25835 states and 36571 transitions. [2020-10-15 03:21:38,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-15 03:21:38,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:21:38,237 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:21:38,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 03:21:38,237 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:21:38,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:21:38,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1793120421, now seen corresponding path program 1 times [2020-10-15 03:21:38,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:21:38,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126915867] [2020-10-15 03:21:38,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:21:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:21:38,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:38,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:38,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:38,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:38,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:38,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:38,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:38,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:38,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:38,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:39,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:39,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:39,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:40,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:43,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:21:43,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-15 03:21:43,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:21:43,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-15 03:21:43,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:21:43,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:21:43,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 03:21:43,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:21:43,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-15 03:21:43,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:21:43,650 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:21:43,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:21:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:21:43,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:43,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:21:43,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:21:43,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:21:43,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:21:43,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:21:43,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:21:43,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:21:43,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:21:43,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:21:43,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:21:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:21:43,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126915867] [2020-10-15 03:21:43,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:21:43,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 03:21:43,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681719317] [2020-10-15 03:21:43,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 03:21:43,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:21:43,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 03:21:43,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:21:43,707 INFO L87 Difference]: Start difference. First operand 25835 states and 36571 transitions. Second operand 13 states. [2020-10-15 03:21:44,131 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 135