/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=SHALLOWEST --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-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:21:36,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:21:36,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:21:36,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:21:36,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:21:36,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:21:36,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:21:36,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:21:36,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:21:36,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:21:36,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:21:36,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:21:36,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:21:36,644 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:21:36,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:21:36,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:21:36,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:21:36,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:21:36,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:21:36,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:21:36,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:21:36,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:21:36,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:21:36,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:21:36,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:21:36,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:21:36,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:21:36,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:21:36,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:21:36,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:21:36,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:21:36,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:21:36,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:21:36,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:21:36,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:21:36,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:21:36,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:21:36,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:21:36,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:21:36,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:21:36,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:21:36,695 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 [2020-10-27 05:21:36,724 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:21:36,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:21:36,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:21:36,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:21:36,727 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:21:36,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:21:36,727 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:21:36,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:21:36,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:21:36,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:21:36,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:21:36,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:21:36,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:21:36,729 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:21:36,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:21:36,729 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:21:36,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:21:36,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:21:36,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:21:36,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:21:36,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:21:36,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:21:36,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:21:36,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:21:36,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:21:36,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:21:36,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:21:36,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:21:36,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:21:36,732 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:21:37,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:21:37,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:21:37,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:21:37,145 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:21:37,146 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:21:37,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c [2020-10-27 05:21:37,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6fdc71505/3f538aabe73a4d4bac230e76511bac58/FLAGc1573b8c8 [2020-10-27 05:21:38,105 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:21:38,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c [2020-10-27 05:21:38,141 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6fdc71505/3f538aabe73a4d4bac230e76511bac58/FLAGc1573b8c8 [2020-10-27 05:21:38,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6fdc71505/3f538aabe73a4d4bac230e76511bac58 [2020-10-27 05:21:38,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:21:38,665 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:21:38,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:21:38,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:21:38,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:21:38,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:21:38" (1/1) ... [2020-10-27 05:21:38,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13423caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:21:38, skipping insertion in model container [2020-10-27 05:21:38,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:21:38" (1/1) ... [2020-10-27 05:21:38,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:21:38,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:21:39,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:21:40,008 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:21:40,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:21:40,522 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:21:40,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:21:40 WrapperNode [2020-10-27 05:21:40,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:21:40,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:21:40,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:21:40,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:21:40,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:21:40" (1/1) ... [2020-10-27 05:21:40,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:21:40" (1/1) ... [2020-10-27 05:21:40,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:21:40" (1/1) ... [2020-10-27 05:21:40,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:21:40" (1/1) ... [2020-10-27 05:21:40,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:21:40" (1/1) ... [2020-10-27 05:21:40,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:21:40" (1/1) ... [2020-10-27 05:21:40,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:21:40" (1/1) ... [2020-10-27 05:21:40,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:21:40,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:21:40,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:21:40,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:21:40,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:21:40" (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 [2020-10-27 05:21:40,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:21:40,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:21:40,893 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:21:40,893 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:21:40,894 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:21:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:21:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:21:40,895 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:21:40,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:21:40,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:21:40,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:21:40,896 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:21:40,896 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:21:40,896 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:21:40,896 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:21:40,897 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:21:40,897 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:21:40,898 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:21:40,898 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:21:40,898 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:21:40,898 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:21:40,898 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:21:40,898 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:21:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:21:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:21:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:21:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:21:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:21:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:21:44,735 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:21:44,735 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:21:44,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:21:44 BoogieIcfgContainer [2020-10-27 05:21:44,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:21:44,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:21:44,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:21:44,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:21:44,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:21:38" (1/3) ... [2020-10-27 05:21:44,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f5b278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:21:44, skipping insertion in model container [2020-10-27 05:21:44,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:21:40" (2/3) ... [2020-10-27 05:21:44,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f5b278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:21:44, skipping insertion in model container [2020-10-27 05:21:44,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:21:44" (3/3) ... [2020-10-27 05:21:44,749 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c [2020-10-27 05:21:44,762 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:21:44,768 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:21:44,782 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:21:44,818 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:21:44,818 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:21:44,818 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:21:44,818 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:21:44,818 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:21:44,819 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:21:44,819 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:21:44,819 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:21:44,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states. [2020-10-27 05:21:44,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 05:21:44,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:44,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:21:44,895 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:44,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:44,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1862256018, now seen corresponding path program 1 times [2020-10-27 05:21:44,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:44,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234187583] [2020-10-27 05:21:44,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:45,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:46,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:46,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:46,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:47,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:47,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:48,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:50,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:50,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 05:21:50,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:21:50,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 05:21:50,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:50,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:21:50,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:21:50,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 05:21:50,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:21:52,834 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification that was a NOOP. DAG size: 589 [2020-10-27 05:21:52,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:21:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:52,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:52,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:52,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:21:52,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:21:52,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-27 05:21:52,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:52,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:21:52,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:21:52,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:21:52,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:53,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:21:53,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234187583] [2020-10-27 05:21:53,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:21:53,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:21:53,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956840686] [2020-10-27 05:21:53,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:21:53,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:21:53,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:21:53,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:21:53,129 INFO L87 Difference]: Start difference. First operand 1202 states. Second operand 6 states. [2020-10-27 05:21:55,457 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 597 [2020-10-27 05:22:07,797 WARN L193 SmtUtils]: Spent 2.35 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-27 05:22:08,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:22:08,573 INFO L93 Difference]: Finished difference Result 1823 states and 3117 transitions. [2020-10-27 05:22:08,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:22:08,576 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-27 05:22:08,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:22:08,617 INFO L225 Difference]: With dead ends: 1823 [2020-10-27 05:22:08,617 INFO L226 Difference]: Without dead ends: 1202 [2020-10-27 05:22:08,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:22:08,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2020-10-27 05:22:08,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1145. [2020-10-27 05:22:08,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1145 states. [2020-10-27 05:22:08,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1505 transitions. [2020-10-27 05:22:08,813 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1505 transitions. Word has length 78 [2020-10-27 05:22:08,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:22:08,814 INFO L481 AbstractCegarLoop]: Abstraction has 1145 states and 1505 transitions. [2020-10-27 05:22:08,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:22:08,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1505 transitions. [2020-10-27 05:22:08,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 05:22:08,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:22:08,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:22:08,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:22:08,820 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:22:08,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:22:08,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1378423455, now seen corresponding path program 1 times [2020-10-27 05:22:08,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:22:08,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388188691] [2020-10-27 05:22:08,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:22:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:08,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:09,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:09,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:09,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:09,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:13,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:13,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 05:22:13,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:22:13,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 05:22:13,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:13,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:22:13,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:22:13,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 05:22:13,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-27 05:22:16,467 WARN L193 SmtUtils]: Spent 2.29 s on a formula simplification that was a NOOP. DAG size: 589 [2020-10-27 05:22:16,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:22:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:16,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:16,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:16,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:22:16,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:22:16,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 05:22:16,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:16,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:22:16,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:22:16,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:22:16,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:16,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:22:16,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388188691] [2020-10-27 05:22:16,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:22:16,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:22:16,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386045558] [2020-10-27 05:22:16,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:22:16,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:22:16,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:22:16,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:22:16,648 INFO L87 Difference]: Start difference. First operand 1145 states and 1505 transitions. Second operand 6 states. [2020-10-27 05:22:19,134 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification that was a NOOP. DAG size: 598 [2020-10-27 05:22:26,904 WARN L193 SmtUtils]: Spent 2.37 s on a formula simplification that was a NOOP. DAG size: 596 [2020-10-27 05:22:27,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:22:27,693 INFO L93 Difference]: Finished difference Result 1852 states and 2468 transitions. [2020-10-27 05:22:27,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:22:27,694 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-27 05:22:27,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:22:27,702 INFO L225 Difference]: With dead ends: 1852 [2020-10-27 05:22:27,702 INFO L226 Difference]: Without dead ends: 1270 [2020-10-27 05:22:27,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:22:27,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2020-10-27 05:22:27,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1187. [2020-10-27 05:22:27,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1187 states. [2020-10-27 05:22:27,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1617 transitions. [2020-10-27 05:22:27,790 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1617 transitions. Word has length 78 [2020-10-27 05:22:27,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:22:27,792 INFO L481 AbstractCegarLoop]: Abstraction has 1187 states and 1617 transitions. [2020-10-27 05:22:27,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:22:27,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1617 transitions. [2020-10-27 05:22:27,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 05:22:27,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:22:27,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:22:27,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:22:27,796 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:22:27,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:22:27,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1846666075, now seen corresponding path program 1 times [2020-10-27 05:22:27,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:22:27,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623147477] [2020-10-27 05:22:27,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:22:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:27,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:28,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:28,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:28,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:30,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:30,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:30,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:31,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:31,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:32,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:32,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:32,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 05:22:32,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:22:32,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 05:22:32,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:22:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:22:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 05:22:32,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:35,406 WARN L193 SmtUtils]: Spent 2.32 s on a formula simplification that was a NOOP. DAG size: 589 [2020-10-27 05:22:35,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:22:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:35,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:35,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:35,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:22:35,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:22:35,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 05:22:35,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:35,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:22:35,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:22:35,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:22:35,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:35,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:22:35,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623147477] [2020-10-27 05:22:35,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:22:35,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:22:35,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383463286] [2020-10-27 05:22:35,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:22:35,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:22:35,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:22:35,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:22:35,573 INFO L87 Difference]: Start difference. First operand 1187 states and 1617 transitions. Second operand 6 states. [2020-10-27 05:22:38,200 WARN L193 SmtUtils]: Spent 2.50 s on a formula simplification that was a NOOP. DAG size: 598 [2020-10-27 05:22:44,356 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification that was a NOOP. DAG size: 596 [2020-10-27 05:22:45,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:22:45,283 INFO L93 Difference]: Finished difference Result 2014 states and 2777 transitions. [2020-10-27 05:22:45,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:22:45,284 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-27 05:22:45,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:22:45,292 INFO L225 Difference]: With dead ends: 2014 [2020-10-27 05:22:45,292 INFO L226 Difference]: Without dead ends: 1378 [2020-10-27 05:22:45,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:22:45,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2020-10-27 05:22:45,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1321. [2020-10-27 05:22:45,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1321 states. [2020-10-27 05:22:45,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1850 transitions. [2020-10-27 05:22:45,384 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1850 transitions. Word has length 78 [2020-10-27 05:22:45,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:22:45,384 INFO L481 AbstractCegarLoop]: Abstraction has 1321 states and 1850 transitions. [2020-10-27 05:22:45,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:22:45,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1850 transitions. [2020-10-27 05:22:45,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 05:22:45,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:22:45,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:22:45,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:22:45,388 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:22:45,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:22:45,388 INFO L82 PathProgramCache]: Analyzing trace with hash 298663288, now seen corresponding path program 1 times [2020-10-27 05:22:45,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:22:45,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276306382] [2020-10-27 05:22:45,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:22:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:45,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:45,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:45,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:46,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:46,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:47,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:47,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:48,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:49,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:49,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:50,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:50,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 05:22:50,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:22:50,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 05:22:50,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:50,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:22:50,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:22:50,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 05:22:50,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:53,027 WARN L193 SmtUtils]: Spent 2.30 s on a formula simplification that was a NOOP. DAG size: 589 [2020-10-27 05:22:53,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:22:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:53,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:53,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:53,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:22:53,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:22:53,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 05:22:53,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:53,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:22:53,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:22:53,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:22:53,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:53,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:22:53,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276306382] [2020-10-27 05:22:53,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:22:53,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:22:53,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392789400] [2020-10-27 05:22:53,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:22:53,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:22:53,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:22:53,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:22:53,199 INFO L87 Difference]: Start difference. First operand 1321 states and 1850 transitions. Second operand 10 states. [2020-10-27 05:22:55,803 WARN L193 SmtUtils]: Spent 2.46 s on a formula simplification that was a NOOP. DAG size: 601 [2020-10-27 05:23:01,597 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification that was a NOOP. DAG size: 597 [2020-10-27 05:23:04,415 WARN L193 SmtUtils]: Spent 2.33 s on a formula simplification that was a NOOP. DAG size: 593 [2020-10-27 05:23:08,322 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-27 05:23:08,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:23:08,790 INFO L93 Difference]: Finished difference Result 3868 states and 5719 transitions. [2020-10-27 05:23:08,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 05:23:08,791 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 80 [2020-10-27 05:23:08,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:23:08,810 INFO L225 Difference]: With dead ends: 3868 [2020-10-27 05:23:08,810 INFO L226 Difference]: Without dead ends: 3364 [2020-10-27 05:23:08,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2020-10-27 05:23:08,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3364 states. [2020-10-27 05:23:08,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3364 to 1321. [2020-10-27 05:23:08,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1321 states. [2020-10-27 05:23:08,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1848 transitions. [2020-10-27 05:23:08,942 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1848 transitions. Word has length 80 [2020-10-27 05:23:08,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:23:08,943 INFO L481 AbstractCegarLoop]: Abstraction has 1321 states and 1848 transitions. [2020-10-27 05:23:08,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:23:08,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1848 transitions. [2020-10-27 05:23:08,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 05:23:08,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:23:08,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:23:08,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:23:08,946 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:23:08,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:23:08,947 INFO L82 PathProgramCache]: Analyzing trace with hash 616932083, now seen corresponding path program 1 times [2020-10-27 05:23:08,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:23:08,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187045305] [2020-10-27 05:23:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:23:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:09,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:09,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:09,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:09,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:09,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:10,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:11,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:11,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:12,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:13,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:13,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:14,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:14,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 05:23:14,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:23:14,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 05:23:14,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:14,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:23:14,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:23:14,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 05:23:14,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:16,460 WARN L193 SmtUtils]: Spent 2.32 s on a formula simplification that was a NOOP. DAG size: 589 [2020-10-27 05:23:16,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:23:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:16,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:16,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:16,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:23:16,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:23:16,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 05:23:16,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:16,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:23:16,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:23:16,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:23:16,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:16,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:23:16,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187045305] [2020-10-27 05:23:16,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:23:16,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:23:16,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838394316] [2020-10-27 05:23:16,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:23:16,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:23:16,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:23:16,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:23:16,589 INFO L87 Difference]: Start difference. First operand 1321 states and 1848 transitions. Second operand 6 states. [2020-10-27 05:23:19,033 WARN L193 SmtUtils]: Spent 2.33 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-27 05:23:22,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:23:22,226 INFO L93 Difference]: Finished difference Result 2087 states and 2967 transitions. [2020-10-27 05:23:22,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:23:22,227 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-27 05:23:22,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:23:22,234 INFO L225 Difference]: With dead ends: 2087 [2020-10-27 05:23:22,234 INFO L226 Difference]: Without dead ends: 1284 [2020-10-27 05:23:22,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:23:22,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2020-10-27 05:23:22,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1284. [2020-10-27 05:23:22,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1284 states. [2020-10-27 05:23:22,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1798 transitions. [2020-10-27 05:23:22,343 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1798 transitions. Word has length 80 [2020-10-27 05:23:22,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:23:22,343 INFO L481 AbstractCegarLoop]: Abstraction has 1284 states and 1798 transitions. [2020-10-27 05:23:22,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:23:22,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1798 transitions. [2020-10-27 05:23:22,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 05:23:22,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:23:22,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:23:22,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:23:22,347 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:23:22,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:23:22,347 INFO L82 PathProgramCache]: Analyzing trace with hash -401807786, now seen corresponding path program 1 times [2020-10-27 05:23:22,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:23:22,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975901650] [2020-10-27 05:23:22,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:23:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:22,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:22,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:22,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:22,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:23,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:24,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:24,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:24,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:24,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:27,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:27,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 05:23:27,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:23:27,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 05:23:27,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:27,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:23:27,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:23:27,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 05:23:27,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:29,668 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 589 [2020-10-27 05:23:29,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:23:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:29,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:29,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:29,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:23:29,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:23:29,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 05:23:29,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:29,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:23:29,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:23:29,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:23:29,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:29,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:23:29,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975901650] [2020-10-27 05:23:29,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:23:29,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:23:29,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548903168] [2020-10-27 05:23:29,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:23:29,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:23:29,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:23:29,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:23:29,823 INFO L87 Difference]: Start difference. First operand 1284 states and 1798 transitions. Second operand 6 states. [2020-10-27 05:23:32,242 WARN L193 SmtUtils]: Spent 2.32 s on a formula simplification that was a NOOP. DAG size: 598 [2020-10-27 05:23:37,578 WARN L193 SmtUtils]: Spent 2.29 s on a formula simplification that was a NOOP. DAG size: 596 [2020-10-27 05:23:38,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:23:38,274 INFO L93 Difference]: Finished difference Result 2828 states and 3973 transitions. [2020-10-27 05:23:38,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:23:38,274 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-10-27 05:23:38,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:23:38,284 INFO L225 Difference]: With dead ends: 2828 [2020-10-27 05:23:38,285 INFO L226 Difference]: Without dead ends: 1960 [2020-10-27 05:23:38,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:23:38,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2020-10-27 05:23:38,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1904. [2020-10-27 05:23:38,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1904 states. [2020-10-27 05:23:38,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 2667 transitions. [2020-10-27 05:23:38,456 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 2667 transitions. Word has length 82 [2020-10-27 05:23:38,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:23:38,456 INFO L481 AbstractCegarLoop]: Abstraction has 1904 states and 2667 transitions. [2020-10-27 05:23:38,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:23:38,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 2667 transitions. [2020-10-27 05:23:38,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 05:23:38,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:23:38,459 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] [2020-10-27 05:23:38,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:23:38,460 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:23:38,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:23:38,460 INFO L82 PathProgramCache]: Analyzing trace with hash 108330054, now seen corresponding path program 1 times [2020-10-27 05:23:38,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:23:38,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646487423] [2020-10-27 05:23:38,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:23:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:38,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:38,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:38,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:38,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:39,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:39,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:39,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:43,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:43,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 05:23:43,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:23:43,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 05:23:43,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:43,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:23:43,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:23:43,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 05:23:43,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:45,892 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 589 [2020-10-27 05:23:45,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:23:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:45,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:45,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:45,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:23:45,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:23:45,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 05:23:45,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:45,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:23:45,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:23:45,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:23:45,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:45,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:23:45,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646487423] [2020-10-27 05:23:45,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:23:45,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:23:45,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350010191] [2020-10-27 05:23:45,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:23:45,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:23:45,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:23:45,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:23:45,997 INFO L87 Difference]: Start difference. First operand 1904 states and 2667 transitions. Second operand 9 states. [2020-10-27 05:23:48,421 WARN L193 SmtUtils]: Spent 2.30 s on a formula simplification that was a NOOP. DAG size: 600 [2020-10-27 05:23:53,523 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification that was a NOOP. DAG size: 598 [2020-10-27 05:23:56,085 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification that was a NOOP. DAG size: 596 [2020-10-27 05:23:56,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:23:56,980 INFO L93 Difference]: Finished difference Result 3875 states and 5501 transitions. [2020-10-27 05:23:56,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 05:23:56,980 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-27 05:23:56,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:23:56,992 INFO L225 Difference]: With dead ends: 3875 [2020-10-27 05:23:56,992 INFO L226 Difference]: Without dead ends: 2452 [2020-10-27 05:23:56,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 05:23:56,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2452 states. [2020-10-27 05:23:57,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2452 to 1904. [2020-10-27 05:23:57,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1904 states. [2020-10-27 05:23:57,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 2666 transitions. [2020-10-27 05:23:57,204 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 2666 transitions. Word has length 84 [2020-10-27 05:23:57,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:23:57,204 INFO L481 AbstractCegarLoop]: Abstraction has 1904 states and 2666 transitions. [2020-10-27 05:23:57,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:23:57,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 2666 transitions. [2020-10-27 05:23:57,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 05:23:57,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:23:57,207 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] [2020-10-27 05:23:57,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:23:57,208 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:23:57,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:23:57,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1813585666, now seen corresponding path program 1 times [2020-10-27 05:23:57,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:23:57,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530701160] [2020-10-27 05:23:57,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:23:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:57,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:57,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:57,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:57,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:59,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:59,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:00,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:00,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:00,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:02,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:02,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 05:24:02,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:24:02,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 05:24:02,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:02,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:24:02,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:24:02,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 05:24:02,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:04,700 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification that was a NOOP. DAG size: 589 [2020-10-27 05:24:04,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:24:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:24:04,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:04,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:04,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:24:04,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:24:04,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 05:24:04,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:04,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:24:04,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:24:04,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:24:04,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:04,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:24:04,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530701160] [2020-10-27 05:24:04,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:24:04,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:24:04,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488131257] [2020-10-27 05:24:04,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:24:04,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:24:04,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:24:04,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:24:04,871 INFO L87 Difference]: Start difference. First operand 1904 states and 2666 transitions. Second operand 10 states. [2020-10-27 05:24:07,407 WARN L193 SmtUtils]: Spent 2.40 s on a formula simplification that was a NOOP. DAG size: 600 [2020-10-27 05:24:12,878 WARN L193 SmtUtils]: Spent 2.26 s on a formula simplification that was a NOOP. DAG size: 596 [2020-10-27 05:24:15,589 WARN L193 SmtUtils]: Spent 2.32 s on a formula simplification that was a NOOP. DAG size: 593 [2020-10-27 05:24:19,646 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-27 05:24:19,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:24:19,946 INFO L93 Difference]: Finished difference Result 6894 states and 10142 transitions. [2020-10-27 05:24:19,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 05:24:19,946 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-10-27 05:24:19,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:24:19,969 INFO L225 Difference]: With dead ends: 6894 [2020-10-27 05:24:19,969 INFO L226 Difference]: Without dead ends: 5895 [2020-10-27 05:24:19,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=181, Invalid=575, Unknown=0, NotChecked=0, Total=756 [2020-10-27 05:24:19,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5895 states. [2020-10-27 05:24:20,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5895 to 1904. [2020-10-27 05:24:20,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1904 states. [2020-10-27 05:24:20,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 2664 transitions. [2020-10-27 05:24:20,222 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 2664 transitions. Word has length 84 [2020-10-27 05:24:20,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:24:20,223 INFO L481 AbstractCegarLoop]: Abstraction has 1904 states and 2664 transitions. [2020-10-27 05:24:20,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:24:20,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 2664 transitions. [2020-10-27 05:24:20,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 05:24:20,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:24:20,225 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] [2020-10-27 05:24:20,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:24:20,226 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:24:20,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:24:20,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1518031333, now seen corresponding path program 1 times [2020-10-27 05:24:20,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:24:20,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206190182] [2020-10-27 05:24:20,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:24:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:24:20,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:20,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:20,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:20,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:22,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:22,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:22,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:23,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:24,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:24,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:24,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:25,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:25,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 05:24:25,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:24:25,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 05:24:25,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:25,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:24:25,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:24:25,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 05:24:25,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:27,789 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 589 [2020-10-27 05:24:27,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:24:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:24:27,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:27,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:27,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:24:27,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:24:27,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 05:24:27,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:27,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:24:27,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:24:27,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:24:27,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:27,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:24:27,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206190182] [2020-10-27 05:24:27,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:24:27,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:24:27,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774475286] [2020-10-27 05:24:27,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:24:27,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:24:27,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:24:27,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:24:27,898 INFO L87 Difference]: Start difference. First operand 1904 states and 2664 transitions. Second operand 11 states. [2020-10-27 05:24:30,378 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification that was a NOOP. DAG size: 602 [2020-10-27 05:24:36,957 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-27 05:24:39,263 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 594 [2020-10-27 05:24:41,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:24:41,885 INFO L93 Difference]: Finished difference Result 8778 states and 12780 transitions. [2020-10-27 05:24:41,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 05:24:41,885 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-10-27 05:24:41,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:24:41,915 INFO L225 Difference]: With dead ends: 8778 [2020-10-27 05:24:41,915 INFO L226 Difference]: Without dead ends: 7650 [2020-10-27 05:24:41,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930 [2020-10-27 05:24:41,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7650 states. [2020-10-27 05:24:42,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7650 to 1904. [2020-10-27 05:24:42,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1904 states. [2020-10-27 05:24:42,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 2663 transitions. [2020-10-27 05:24:42,217 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 2663 transitions. Word has length 84 [2020-10-27 05:24:42,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:24:42,217 INFO L481 AbstractCegarLoop]: Abstraction has 1904 states and 2663 transitions. [2020-10-27 05:24:42,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:24:42,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 2663 transitions. [2020-10-27 05:24:42,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 05:24:42,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:24:42,220 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] [2020-10-27 05:24:42,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:24:42,220 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:24:42,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:24:42,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1830790892, now seen corresponding path program 1 times [2020-10-27 05:24:42,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:24:42,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971725460] [2020-10-27 05:24:42,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:24:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:24:42,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:42,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:42,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:42,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:42,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:43,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:44,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:45,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:46,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:46,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:46,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:47,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:47,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 05:24:47,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:24:47,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 05:24:47,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:47,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:24:47,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:24:47,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 05:24:47,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:49,682 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification that was a NOOP. DAG size: 589 [2020-10-27 05:24:49,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:24:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:24:49,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:49,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:49,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:24:49,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:24:49,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 05:24:49,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:49,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:24:49,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:24:49,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:24:49,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:49,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:24:49,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971725460] [2020-10-27 05:24:49,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:24:49,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:24:49,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251174989] [2020-10-27 05:24:49,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:24:49,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:24:49,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:24:49,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:24:49,791 INFO L87 Difference]: Start difference. First operand 1904 states and 2663 transitions. Second operand 10 states. [2020-10-27 05:24:52,385 WARN L193 SmtUtils]: Spent 2.46 s on a formula simplification that was a NOOP. DAG size: 601 [2020-10-27 05:24:58,187 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification that was a NOOP. DAG size: 597 [2020-10-27 05:25:00,570 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 593 [2020-10-27 05:25:04,684 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-27 05:25:05,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:25:05,408 INFO L93 Difference]: Finished difference Result 6880 states and 10119 transitions. [2020-10-27 05:25:05,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 05:25:05,408 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-10-27 05:25:05,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:25:05,424 INFO L225 Difference]: With dead ends: 6880 [2020-10-27 05:25:05,424 INFO L226 Difference]: Without dead ends: 5895 [2020-10-27 05:25:05,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2020-10-27 05:25:05,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5895 states. [2020-10-27 05:25:05,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5895 to 1904. [2020-10-27 05:25:05,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1904 states. [2020-10-27 05:25:05,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 2661 transitions. [2020-10-27 05:25:05,684 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 2661 transitions. Word has length 85 [2020-10-27 05:25:05,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:25:05,684 INFO L481 AbstractCegarLoop]: Abstraction has 1904 states and 2661 transitions. [2020-10-27 05:25:05,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:25:05,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 2661 transitions. [2020-10-27 05:25:05,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 05:25:05,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:25:05,688 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] [2020-10-27 05:25:05,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:25:05,688 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:25:05,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:25:05,689 INFO L82 PathProgramCache]: Analyzing trace with hash 581520556, now seen corresponding path program 1 times [2020-10-27 05:25:05,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:25:05,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982442586] [2020-10-27 05:25:05,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:25:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:25:05,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:05,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:05,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:06,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:06,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:07,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:07,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:08,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:08,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:09,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:09,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:10,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:10,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:10,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:25:10,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 05:25:10,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:25:10,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 05:25:10,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:25:10,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:25:10,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:25:10,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 05:25:10,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0