/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=0.3 --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 language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:24:08,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:24:08,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:24:08,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:24:08,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:24:08,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:24:08,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:24:08,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:24:08,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:24:08,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:24:08,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:24:08,654 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:24:08,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:24:08,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:24:08,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:24:08,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:24:08,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:24:08,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:24:08,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:24:08,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:24:08,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:24:08,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:24:08,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:24:08,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:24:08,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:24:08,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:24:08,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:24:08,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:24:08,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:24:08,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:24:08,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:24:08,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:24:08,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:24:08,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:24:08,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:24:08,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:24:08,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:24:08,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:24:08,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:24:08,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:24:08,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:24:08,717 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 [2020-10-29 12:24:08,772 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:24:08,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:24:08,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:24:08,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:24:08,778 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:24:08,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:24:08,778 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:24:08,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:24:08,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:24:08,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:24:08,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:24:08,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:24:08,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:24:08,781 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:24:08,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:24:08,781 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:24:08,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:24:08,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:24:08,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:24:08,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:24:08,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:24:08,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:24:08,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:24:08,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:24:08,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:24:08,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:24:08,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:24:08,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:24:08,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:24:08,784 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:24:09,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:24:09,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:24:09,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:24:09,231 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:24:09,232 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:24:09,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c [2020-10-29 12:24:09,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17fff3d9c/7b568ffb7ec04318b2c6bd94f3dffbec/FLAG83aff23a6 [2020-10-29 12:24:10,196 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:24:10,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c [2020-10-29 12:24:10,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17fff3d9c/7b568ffb7ec04318b2c6bd94f3dffbec/FLAG83aff23a6 [2020-10-29 12:24:10,427 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17fff3d9c/7b568ffb7ec04318b2c6bd94f3dffbec [2020-10-29 12:24:10,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:24:10,442 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:24:10,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:24:10,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:24:10,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:24:10,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:24:10" (1/1) ... [2020-10-29 12:24:10,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@500eebf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:24:10, skipping insertion in model container [2020-10-29 12:24:10,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:24:10" (1/1) ... [2020-10-29 12:24:10,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:24:10,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:24:11,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:24:11,074 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:24:11,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:24:11,339 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:24:11,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:24:11 WrapperNode [2020-10-29 12:24:11,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:24:11,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:24:11,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:24:11,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:24:11,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:24:11" (1/1) ... [2020-10-29 12:24:11,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:24:11" (1/1) ... [2020-10-29 12:24:11,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:24:11" (1/1) ... [2020-10-29 12:24:11,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:24:11" (1/1) ... [2020-10-29 12:24:11,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:24:11" (1/1) ... [2020-10-29 12:24:11,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:24:11" (1/1) ... [2020-10-29 12:24:11,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:24:11" (1/1) ... [2020-10-29 12:24:11,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:24:11,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:24:11,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:24:11,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:24:11,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:24:11" (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 [2020-10-29 12:24:11,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:24:11,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:24:11,636 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:24:11,636 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 12:24:11,636 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-29 12:24:11,636 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-29 12:24:11,636 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-29 12:24:11,636 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-29 12:24:11,637 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-29 12:24:11,637 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-29 12:24:11,637 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-29 12:24:11,637 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:24:11,637 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-29 12:24:11,638 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:24:11,638 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:24:11,638 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:24:11,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:24:11,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:24:11,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:24:11,639 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:24:11,639 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 12:24:11,639 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:24:11,639 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:24:11,639 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:24:11,639 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:24:11,640 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:24:11,640 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 12:24:11,640 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 12:24:11,640 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:24:11,640 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:24:11,640 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:24:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:24:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:24:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:24:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:24:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:24:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:24:14,007 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:24:14,007 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 12:24:14,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:24:14 BoogieIcfgContainer [2020-10-29 12:24:14,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:24:14,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:24:14,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:24:14,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:24:14,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:24:10" (1/3) ... [2020-10-29 12:24:14,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57630978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:24:14, skipping insertion in model container [2020-10-29 12:24:14,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:24:11" (2/3) ... [2020-10-29 12:24:14,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57630978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:24:14, skipping insertion in model container [2020-10-29 12:24:14,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:24:14" (3/3) ... [2020-10-29 12:24:14,021 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.BOUNDED-10.pals.c [2020-10-29 12:24:14,032 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:24:14,037 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:24:14,049 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:24:14,082 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:24:14,082 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:24:14,082 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:24:14,083 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:24:14,083 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:24:14,083 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:24:14,083 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:24:14,083 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:24:14,116 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states. [2020-10-29 12:24:14,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-29 12:24:14,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:24:14,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:24:14,154 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:24:14,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:24:14,161 INFO L82 PathProgramCache]: Analyzing trace with hash -966148239, now seen corresponding path program 1 times [2020-10-29 12:24:14,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:24:14,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890079513] [2020-10-29 12:24:14,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:24:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:14,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:15,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:15,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-29 12:24:15,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:15,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1102 [2020-10-29 12:24:15,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:15,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:15,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:15,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-29 12:24:15,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:15,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:24:17,045 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:24:17,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:24:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:17,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:17,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:17,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:24:17,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:17,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 12:24:17,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:17,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:17,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:17,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:24:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:17,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:24:17,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:24:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:17,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:17,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:17,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 12:24:17,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:17,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-29 12:24:17,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:17,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:17,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:17,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:24:17,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:17,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:24:17,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-29 12:24:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:17,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:17,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:17,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:24:17,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:17,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:24:17,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:17,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:17,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:17,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:24:17,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:17,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:24:17,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-29 12:24:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:17,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:17,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:17,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:17,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:17,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 12:24:17,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:17,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:17,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:17,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:17,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:17,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:24:17,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-29 12:24:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:17,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:17,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:17,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:17,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:17,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:24:17,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:17,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:17,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:17,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:17,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:17,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:17,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-29 12:24:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:17,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:17,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:17,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:17,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:17,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:24:17,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:17,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:17,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:17,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-29 12:24:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:17,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:17,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:17,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:17,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:17,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:24:17,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:17,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:17,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:17,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:17,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:17,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:17,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-29 12:24:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:17,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:17,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:17,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:17,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:17,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:24:17,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:17,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:17,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:17,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:17,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:17,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:17,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-29 12:24:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:17,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:17,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:17,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:17,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:17,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:24:17,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:17,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:17,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:17,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:17,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:17,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:17,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:24:17,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890079513] [2020-10-29 12:24:17,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:24:17,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 12:24:17,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020858583] [2020-10-29 12:24:17,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:24:17,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:24:17,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:24:17,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:24:17,892 INFO L87 Difference]: Start difference. First operand 742 states. Second operand 8 states. [2020-10-29 12:24:21,274 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:24:21,995 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:24:22,752 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:24:23,368 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:24:23,984 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:24:24,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:24:24,793 INFO L93 Difference]: Finished difference Result 976 states and 1721 transitions. [2020-10-29 12:24:24,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:24:24,796 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 183 [2020-10-29 12:24:24,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:24:24,829 INFO L225 Difference]: With dead ends: 976 [2020-10-29 12:24:24,829 INFO L226 Difference]: Without dead ends: 784 [2020-10-29 12:24:24,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:24:24,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-10-29 12:24:25,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 734. [2020-10-29 12:24:25,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2020-10-29 12:24:25,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1328 transitions. [2020-10-29 12:24:25,080 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1328 transitions. Word has length 183 [2020-10-29 12:24:25,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:24:25,082 INFO L481 AbstractCegarLoop]: Abstraction has 734 states and 1328 transitions. [2020-10-29 12:24:25,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:24:25,082 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1328 transitions. [2020-10-29 12:24:25,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-29 12:24:25,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:24:25,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:24:25,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:24:25,091 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:24:25,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:24:25,092 INFO L82 PathProgramCache]: Analyzing trace with hash 973013807, now seen corresponding path program 1 times [2020-10-29 12:24:25,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:24:25,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717116561] [2020-10-29 12:24:25,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:24:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:25,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:28,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:28,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-29 12:24:28,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:28,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3118 [2020-10-29 12:24:28,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:28,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:28,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:24:28,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-29 12:24:28,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:24:28,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:29,576 WARN L193 SmtUtils]: Spent 934.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:24:29,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:24:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:29,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:29,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:29,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:24:29,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:29,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 12:24:29,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:29,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:29,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:29,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:24:29,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:29,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:29,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:24:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:29,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:30,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:30,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 12:24:30,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:30,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-10-29 12:24:30,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:30,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:24:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:24:30,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 12:24:30,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:30,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-29 12:24:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:30,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:30,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:30,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:24:30,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:30,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:24:30,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:30,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:30,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:24:30,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:24:30,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:24:30,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 12:24:30,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-29 12:24:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:30,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:30,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:30,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:30,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:30,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:24:30,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:30,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:30,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:30,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:30,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:30,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:24:30,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-29 12:24:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:30,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:30,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:30,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:30,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:30,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:24:30,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:30,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:30,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:30,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:30,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:30,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:30,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-29 12:24:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:30,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:30,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:30,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:30,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:30,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:24:30,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:30,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:30,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:30,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:30,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:30,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:30,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-29 12:24:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:30,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:30,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:30,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:30,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:30,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:24:30,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:30,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:30,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:30,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:30,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:30,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:30,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-29 12:24:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:30,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:30,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:30,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:30,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:30,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:24:30,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:30,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:30,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:30,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:30,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:30,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:30,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-29 12:24:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:30,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:30,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:30,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:30,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:30,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:24:30,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:30,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:30,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:30,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:30,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:30,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:30,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:24:30,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717116561] [2020-10-29 12:24:30,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:24:30,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 12:24:30,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981758389] [2020-10-29 12:24:30,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:24:30,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:24:30,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:24:30,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:24:30,932 INFO L87 Difference]: Start difference. First operand 734 states and 1328 transitions. Second operand 14 states. [2020-10-29 12:24:40,601 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 388 [2020-10-29 12:24:41,783 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 390 [2020-10-29 12:24:43,109 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 388 [2020-10-29 12:24:44,233 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 391 [2020-10-29 12:24:45,693 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:24:46,535 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:24:47,435 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:24:48,274 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:24:49,180 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:24:50,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:24:50,639 INFO L93 Difference]: Finished difference Result 977 states and 1723 transitions. [2020-10-29 12:24:50,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:24:50,640 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 183 [2020-10-29 12:24:50,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:24:50,648 INFO L225 Difference]: With dead ends: 977 [2020-10-29 12:24:50,648 INFO L226 Difference]: Without dead ends: 795 [2020-10-29 12:24:50,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:24:50,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2020-10-29 12:24:50,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 734. [2020-10-29 12:24:50,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2020-10-29 12:24:50,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1268 transitions. [2020-10-29 12:24:50,837 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1268 transitions. Word has length 183 [2020-10-29 12:24:50,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:24:50,837 INFO L481 AbstractCegarLoop]: Abstraction has 734 states and 1268 transitions. [2020-10-29 12:24:50,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:24:50,838 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1268 transitions. [2020-10-29 12:24:50,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-29 12:24:50,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:24:50,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:24:50,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:24:50,844 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:24:50,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:24:50,844 INFO L82 PathProgramCache]: Analyzing trace with hash -929784361, now seen corresponding path program 1 times [2020-10-29 12:24:50,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:24:50,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786925336] [2020-10-29 12:24:50,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:24:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:51,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:51,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:52,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:52,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:56,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:56,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-29 12:24:56,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:24:56,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5146 [2020-10-29 12:24:56,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:56,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:56,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:24:56,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-29 12:24:56,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 12:24:56,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:24:57,169 WARN L193 SmtUtils]: Spent 944.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:24:57,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:24:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:57,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:57,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:57,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:24:57,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:57,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 12:24:57,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:57,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:57,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:57,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:24:57,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:57,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:57,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:24:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:57,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:57,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:57,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 12:24:57,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:57,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-29 12:24:57,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:57,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:57,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:24:57,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:24:57,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 12:24:57,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:57,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-29 12:24:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:57,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:57,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:57,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:24:57,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:57,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:24:57,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:57,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:57,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:24:57,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:24:57,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:24:57,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:57,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-29 12:24:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:57,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:57,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:57,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:57,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:57,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:24:57,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:57,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:57,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:24:57,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:24:57,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:24:57,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:57,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-29 12:24:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:57,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:57,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:57,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:57,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:57,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:24:57,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:57,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:57,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:24:57,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:24:57,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:24:57,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:57,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-29 12:24:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:57,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:57,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:57,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:57,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:57,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:24:57,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:57,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:57,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:24:57,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:24:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:24:57,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:58,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-29 12:24:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:58,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:58,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:58,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:58,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:58,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:24:58,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:58,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:58,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:24:58,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:24:58,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:24:58,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:58,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-29 12:24:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:58,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:58,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:58,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:58,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:58,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:24:58,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:58,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:58,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:58,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:58,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:58,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:58,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-29 12:24:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:58,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:58,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:58,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:58,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:58,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:24:58,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:58,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:58,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:58,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:58,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:58,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:58,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:24:58,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786925336] [2020-10-29 12:24:58,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:24:58,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:24:58,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114738012] [2020-10-29 12:24:58,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:24:58,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:24:58,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:24:58,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:24:58,298 INFO L87 Difference]: Start difference. First operand 734 states and 1268 transitions. Second operand 11 states. [2020-10-29 12:24:59,529 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 387 [2020-10-29 12:25:06,830 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-29 12:25:07,531 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-29 12:25:08,304 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-29 12:25:09,027 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:25:09,518 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:25:10,104 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-29 12:25:10,393 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:25:12,013 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:25:12,506 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:25:13,061 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:25:14,310 WARN L193 SmtUtils]: Spent 932.00 ms on a formula simplification that was a NOOP. DAG size: 387 [2020-10-29 12:25:14,608 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:25:14,929 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-29 12:25:15,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:25:15,049 INFO L93 Difference]: Finished difference Result 1180 states and 1994 transitions. [2020-10-29 12:25:15,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:25:15,050 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 242 [2020-10-29 12:25:15,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:25:15,060 INFO L225 Difference]: With dead ends: 1180 [2020-10-29 12:25:15,060 INFO L226 Difference]: Without dead ends: 1004 [2020-10-29 12:25:15,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:25:15,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2020-10-29 12:25:15,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 898. [2020-10-29 12:25:15,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-10-29 12:25:15,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1537 transitions. [2020-10-29 12:25:15,234 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1537 transitions. Word has length 242 [2020-10-29 12:25:15,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:25:15,235 INFO L481 AbstractCegarLoop]: Abstraction has 898 states and 1537 transitions. [2020-10-29 12:25:15,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:25:15,235 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1537 transitions. [2020-10-29 12:25:15,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-29 12:25:15,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:25:15,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:25:15,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:25:15,241 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:25:15,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:25:15,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1924668613, now seen corresponding path program 1 times [2020-10-29 12:25:15,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:25:15,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985595793] [2020-10-29 12:25:15,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:25:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:15,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:15,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:16,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:16,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:17,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:17,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:18,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:20,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:20,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-29 12:25:20,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:25:20,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 12:25:20,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:20,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:20,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:25:20,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:25:20,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-29 12:25:20,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:21,660 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:25:21,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:25:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:21,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:21,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:21,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:25:21,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:21,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:25:21,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:21,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:21,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:25:21,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:25:21,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:25:21,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:21,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:25:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:21,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:22,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:22,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 12:25:22,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:22,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-29 12:25:22,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:22,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:22,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:25:22,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:25:22,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 12:25:22,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:22,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-29 12:25:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:22,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:22,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:22,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:25:22,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:22,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:25:22,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:22,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:22,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:25:22,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:25:22,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:25:22,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:22,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-29 12:25:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:22,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:22,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:22,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:25:22,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:22,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:25:22,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:22,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:25:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:25:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:25:22,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:22,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-29 12:25:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:22,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:22,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:22,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:25:22,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:22,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:25:22,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:22,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:22,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:25:22,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:25:22,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:25:22,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:22,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-29 12:25:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:22,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:22,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:22,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:25:22,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:22,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:25:22,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:22,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:22,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:25:22,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:25:22,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:25:22,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:22,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-29 12:25:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:22,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:22,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:22,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:25:22,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:22,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:25:22,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:22,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:22,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:25:22,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 12:25:22,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:25:22,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:22,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 12:25:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:22,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:22,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:22,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:25:22,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:22,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:25:22,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:22,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:22,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:25:22,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:25:22,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:25:22,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:22,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-29 12:25:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:22,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:22,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:22,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:25:22,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:22,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:25:22,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:22,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:22,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:25:22,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:25:22,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:25:22,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:23,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:25:23,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985595793] [2020-10-29 12:25:23,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:25:23,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:25:23,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803669576] [2020-10-29 12:25:23,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:25:23,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:25:23,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:25:23,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:25:23,020 INFO L87 Difference]: Start difference. First operand 898 states and 1537 transitions. Second operand 11 states. [2020-10-29 12:25:24,122 WARN L193 SmtUtils]: Spent 992.00 ms on a formula simplification that was a NOOP. DAG size: 389 [2020-10-29 12:25:25,252 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 387 [2020-10-29 12:25:26,606 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 393 [2020-10-29 12:25:27,737 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 391 [2020-10-29 12:25:41,695 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 391 [2020-10-29 12:25:42,229 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:25:42,617 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:25:43,390 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:25:44,084 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:25:44,964 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:25:45,667 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:25:46,436 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:25:47,157 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:25:48,354 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:25:48,828 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:25:50,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:25:50,631 INFO L93 Difference]: Finished difference Result 2886 states and 4939 transitions. [2020-10-29 12:25:50,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:25:50,635 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 246 [2020-10-29 12:25:50,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:25:50,647 INFO L225 Difference]: With dead ends: 2886 [2020-10-29 12:25:50,647 INFO L226 Difference]: Without dead ends: 2041 [2020-10-29 12:25:50,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-10-29 12:25:50,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2041 states. [2020-10-29 12:25:51,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2041 to 1849. [2020-10-29 12:25:51,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1849 states. [2020-10-29 12:25:51,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 3150 transitions. [2020-10-29 12:25:51,042 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 3150 transitions. Word has length 246 [2020-10-29 12:25:51,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:25:51,043 INFO L481 AbstractCegarLoop]: Abstraction has 1849 states and 3150 transitions. [2020-10-29 12:25:51,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:25:51,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 3150 transitions. [2020-10-29 12:25:51,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-29 12:25:51,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:25:51,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:25:51,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:25:51,050 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:25:51,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:25:51,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1346910914, now seen corresponding path program 1 times [2020-10-29 12:25:51,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:25:51,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634797589] [2020-10-29 12:25:51,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:25:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:51,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:51,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:51,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:52,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:53,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:53,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:54,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:54,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:56,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:56,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-29 12:25:56,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:25:56,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-29 12:25:56,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:56,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:56,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:25:56,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:25:56,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-29 12:25:56,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:57,345 WARN L193 SmtUtils]: Spent 986.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:25:57,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:25:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:57,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:57,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:57,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:25:57,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:57,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:25:57,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:57,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:57,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:25:57,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:25:57,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:25:57,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:57,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:25:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:57,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:57,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:57,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 12:25:57,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:57,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-10-29 12:25:57,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:57,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:57,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:25:57,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:25:57,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:25:57,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:58,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-29 12:25:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:58,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:58,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:58,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:25:58,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:58,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:25:58,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:58,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:58,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:25:58,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:25:58,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:25:58,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:58,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-29 12:25:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:58,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:58,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:58,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:25:58,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:58,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:25:58,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:58,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:25:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:25:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:25:58,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:58,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-29 12:25:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:58,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:58,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:58,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:25:58,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:58,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:25:58,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:58,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:58,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:25:58,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:25:58,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:25:58,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:58,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-29 12:25:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:58,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:58,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:58,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:25:58,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:58,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:25:58,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:58,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:58,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:25:58,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:25:58,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:25:58,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:58,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-29 12:25:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:58,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:58,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:58,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:25:58,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:58,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:25:58,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:58,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:58,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:25:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:25:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:25:58,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:58,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 12:25:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:58,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:58,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:58,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:25:58,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:58,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:25:58,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:58,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:25:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:25:58,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:25:58,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:58,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-29 12:25:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:58,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:58,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:58,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:25:58,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:58,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:25:58,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:58,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:58,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:25:58,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:25:58,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:25:58,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:58,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:25:58,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634797589] [2020-10-29 12:25:58,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:25:58,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:25:58,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781850307] [2020-10-29 12:25:58,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:25:58,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:25:58,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:25:58,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:25:58,762 INFO L87 Difference]: Start difference. First operand 1849 states and 3150 transitions. Second operand 11 states. [2020-10-29 12:25:59,857 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 389 [2020-10-29 12:26:01,006 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 395 [2020-10-29 12:26:02,426 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-29 12:26:04,556 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 397 DAG size of output: 393 [2020-10-29 12:26:24,886 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 391 [2020-10-29 12:26:25,396 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:26:25,787 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:26,507 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:26:26,909 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:26:27,448 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:28,430 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:26:28,843 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:26:29,417 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:30,421 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:26:30,760 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:26:31,400 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:31,989 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:26:33,171 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:26:33,619 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:26:34,101 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:35,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:26:35,798 INFO L93 Difference]: Finished difference Result 7283 states and 12390 transitions. [2020-10-29 12:26:35,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 12:26:35,799 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 246 [2020-10-29 12:26:35,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:26:35,827 INFO L225 Difference]: With dead ends: 7283 [2020-10-29 12:26:35,828 INFO L226 Difference]: Without dead ends: 5522 [2020-10-29 12:26:35,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:26:35,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5522 states. [2020-10-29 12:26:36,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5522 to 5076. [2020-10-29 12:26:36,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5076 states. [2020-10-29 12:26:36,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5076 states to 5076 states and 8623 transitions. [2020-10-29 12:26:36,866 INFO L78 Accepts]: Start accepts. Automaton has 5076 states and 8623 transitions. Word has length 246 [2020-10-29 12:26:36,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:26:36,867 INFO L481 AbstractCegarLoop]: Abstraction has 5076 states and 8623 transitions. [2020-10-29 12:26:36,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:26:36,867 INFO L276 IsEmpty]: Start isEmpty. Operand 5076 states and 8623 transitions. [2020-10-29 12:26:36,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-29 12:26:36,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:26:36,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:26:36,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:26:36,883 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:26:36,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:26:36,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1712754534, now seen corresponding path program 1 times [2020-10-29 12:26:36,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:26:36,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323716286] [2020-10-29 12:26:36,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:26:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:37,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:37,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:37,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:38,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:39,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:39,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:40,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:42,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:42,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-29 12:26:42,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:26:42,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-29 12:26:42,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:42,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:42,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:26:42,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:26:42,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-29 12:26:42,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:43,314 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:26:43,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:26:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:43,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:43,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:43,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:26:43,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:43,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 12:26:43,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:43,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:43,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:43,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:26:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:43,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:43,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:43,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 12:26:43,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:43,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-29 12:26:43,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:43,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:43,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:26:43,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:43,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 12:26:43,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:43,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-29 12:26:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:43,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:43,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:43,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:26:43,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:43,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:26:43,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:43,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:43,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:26:43,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:43,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:26:43,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:43,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-29 12:26:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:43,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:43,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:43,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:43,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:43,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:26:43,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:43,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:43,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:26:43,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:26:44,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:44,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-29 12:26:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:44,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:44,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:44,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:44,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:44,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 12:26:44,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:44,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:44,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:26:44,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:44,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:26:44,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:44,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-29 12:26:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:44,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:44,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:44,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:44,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:44,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:26:44,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:44,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:44,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:26:44,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:44,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:26:44,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:44,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-29 12:26:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:44,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:44,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:44,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:26:44,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:44,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:26:44,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:44,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:44,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:26:44,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:44,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:26:44,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:44,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-29 12:26:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:44,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:44,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:44,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:44,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:44,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:26:44,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:44,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:44,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:44,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:44,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:44,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:44,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-29 12:26:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:44,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:44,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:44,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:44,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:44,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:26:44,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:44,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:44,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:44,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:44,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:44,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:44,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:26:44,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323716286] [2020-10-29 12:26:44,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:26:44,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:26:44,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311602471] [2020-10-29 12:26:44,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:26:44,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:26:44,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:26:44,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:26:44,532 INFO L87 Difference]: Start difference. First operand 5076 states and 8623 transitions. Second operand 11 states. [2020-10-29 12:26:45,747 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 389 [2020-10-29 12:26:46,977 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 396 [2020-10-29 12:26:48,595 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-29 12:26:50,917 WARN L193 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 398 DAG size of output: 396 [2020-10-29 12:27:13,429 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 391 [2020-10-29 12:27:14,027 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:27:14,499 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:15,384 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:27:15,829 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:27:16,387 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:17,555 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:27:18,024 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:27:18,668 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:19,963 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:27:20,466 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:27:21,100 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:22,212 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:27:23,433 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:27:23,829 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:27:24,249 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:26,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:27:26,856 INFO L93 Difference]: Finished difference Result 20135 states and 34118 transitions. [2020-10-29 12:27:26,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 12:27:26,858 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 247 [2020-10-29 12:27:26,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:27:26,929 INFO L225 Difference]: With dead ends: 20135 [2020-10-29 12:27:26,929 INFO L226 Difference]: Without dead ends: 15396 [2020-10-29 12:27:26,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:27:26,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15396 states. [2020-10-29 12:27:29,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15396 to 14288. [2020-10-29 12:27:29,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14288 states. [2020-10-29 12:27:29,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14288 states to 14288 states and 24169 transitions. [2020-10-29 12:27:29,589 INFO L78 Accepts]: Start accepts. Automaton has 14288 states and 24169 transitions. Word has length 247 [2020-10-29 12:27:29,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:27:29,589 INFO L481 AbstractCegarLoop]: Abstraction has 14288 states and 24169 transitions. [2020-10-29 12:27:29,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:27:29,590 INFO L276 IsEmpty]: Start isEmpty. Operand 14288 states and 24169 transitions. [2020-10-29 12:27:29,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-29 12:27:29,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:27:29,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:27:29,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:27:29,631 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:27:29,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:27:29,632 INFO L82 PathProgramCache]: Analyzing trace with hash 67195296, now seen corresponding path program 1 times [2020-10-29 12:27:29,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:27:29,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62859429] [2020-10-29 12:27:29,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:27:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:29,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:29,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:30,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:30,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:31,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:32,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:34,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:34,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 12:27:34,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:27:34,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-29 12:27:34,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:34,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:34,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:27:34,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:27:34,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-29 12:27:34,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:36,047 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:27:36,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:27:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:36,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:36,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:36,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:27:36,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:36,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:27:36,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:36,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:36,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:36,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:27:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:36,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:36,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:36,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 12:27:36,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:36,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-29 12:27:36,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:36,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:36,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:27:36,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:36,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:27:36,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:36,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-29 12:27:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:36,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:36,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:36,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:27:36,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:36,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:27:36,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:36,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:36,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:36,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:36,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:27:36,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:36,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-29 12:27:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:36,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:36,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:36,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:27:36,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:36,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:27:36,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:36,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:36,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:27:36,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:36,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-29 12:27:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:36,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:36,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:36,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:27:36,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:36,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:27:36,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:36,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:36,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:36,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:36,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:27:36,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:36,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-29 12:27:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:36,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:36,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:36,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:27:36,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:36,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:27:36,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:36,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:36,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:36,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:36,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:27:36,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:36,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-29 12:27:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:36,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:36,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:36,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:27:36,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:36,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:27:36,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:36,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:36,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:36,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:27:36,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:27:36,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:36,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-29 12:27:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:36,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:36,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:36,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:27:36,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:36,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:27:36,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:36,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:36,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:36,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:27:36,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:36,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:36,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-29 12:27:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:36,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:36,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:36,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:27:36,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:36,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:27:36,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:36,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:36,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:36,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:27:36,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:36,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:37,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:27:37,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62859429] [2020-10-29 12:27:37,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:27:37,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:27:37,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403152840] [2020-10-29 12:27:37,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:27:37,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:27:37,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:27:37,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:27:37,134 INFO L87 Difference]: Start difference. First operand 14288 states and 24169 transitions. Second operand 11 states. [2020-10-29 12:27:38,324 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 389 [2020-10-29 12:27:39,559 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 396 [2020-10-29 12:27:41,341 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-29 12:27:43,747 WARN L193 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 398 DAG size of output: 396