/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:30:31,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:30:31,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:30:31,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:30:31,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:30:31,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:30:31,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:30:31,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:30:31,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:30:31,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:30:31,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:30:31,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:30:31,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:30:31,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:30:31,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:30:31,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:30:31,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:30:31,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:30:31,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:30:31,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:30:31,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:30:31,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:30:31,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:30:31,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:30:31,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:30:31,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:30:31,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:30:31,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:30:31,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:30:31,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:30:31,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:30:31,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:30:31,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:30:31,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:30:31,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:30:31,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:30:31,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:30:31,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:30:31,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:30:31,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:30:31,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:30:31,688 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 05:30:31,752 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:30:31,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:30:31,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:30:31,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:30:31,759 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:30:31,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:30:31,760 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:30:31,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:30:31,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:30:31,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:30:31,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:30:31,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:30:31,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:30:31,762 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:30:31,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:30:31,763 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:30:31,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:30:31,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:30:31,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:30:31,764 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:30:31,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:30:31,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:30:31,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:30:31,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:30:31,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:30:31,766 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:30:31,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:30:31,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:30:31,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:30:31,766 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:30:32,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:30:32,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:30:32,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:30:32,234 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:30:32,235 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:30:32,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label46.c [2020-10-29 05:30:32,329 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5afbd99e5/37ea3d70ac784761bfe5ed4191128655/FLAGf04119b3a [2020-10-29 05:30:33,740 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:30:33,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label46.c [2020-10-29 05:30:33,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5afbd99e5/37ea3d70ac784761bfe5ed4191128655/FLAGf04119b3a [2020-10-29 05:30:33,841 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5afbd99e5/37ea3d70ac784761bfe5ed4191128655 [2020-10-29 05:30:33,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:30:33,851 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:30:33,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:30:33,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:30:33,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:30:33,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:30:33" (1/1) ... [2020-10-29 05:30:33,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aa99bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:33, skipping insertion in model container [2020-10-29 05:30:33,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:30:33" (1/1) ... [2020-10-29 05:30:33,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:30:34,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:30:36,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:30:36,511 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:30:37,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:30:37,821 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:30:37,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:37 WrapperNode [2020-10-29 05:30:37,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:30:37,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:30:37,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:30:37,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:30:37,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:37" (1/1) ... [2020-10-29 05:30:37,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:37" (1/1) ... [2020-10-29 05:30:38,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:37" (1/1) ... [2020-10-29 05:30:38,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:37" (1/1) ... [2020-10-29 05:30:38,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:37" (1/1) ... [2020-10-29 05:30:38,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:37" (1/1) ... [2020-10-29 05:30:38,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:37" (1/1) ... [2020-10-29 05:30:38,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:30:38,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:30:38,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:30:38,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:30:38,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:30:38,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:30:38,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:30:38,613 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:30:38,614 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:30:38,614 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:30:38,614 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:30:38,614 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:30:38,615 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:30:38,615 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 05:30:38,615 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-29 05:30:38,616 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-29 05:30:38,616 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:30:38,616 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:30:38,616 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:30:38,616 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:30:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:30:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:30:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 05:30:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-29 05:30:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-29 05:30:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:30:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:30:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:30:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:30:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:30:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:30:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:30:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:30:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:30:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:30:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:30:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:30:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:30:48,678 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:30:48,679 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:30:48,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:30:48 BoogieIcfgContainer [2020-10-29 05:30:48,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:30:48,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:30:48,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:30:48,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:30:48,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:30:33" (1/3) ... [2020-10-29 05:30:48,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1022513a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:30:48, skipping insertion in model container [2020-10-29 05:30:48,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:30:37" (2/3) ... [2020-10-29 05:30:48,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1022513a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:30:48, skipping insertion in model container [2020-10-29 05:30:48,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:30:48" (3/3) ... [2020-10-29 05:30:48,695 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46.c [2020-10-29 05:30:48,708 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:30:48,715 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:30:48,730 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:30:48,770 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:30:48,771 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:30:48,771 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:30:48,771 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:30:48,771 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:30:48,771 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:30:48,772 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:30:48,772 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:30:48,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-29 05:30:48,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1712 [2020-10-29 05:30:48,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:30:48,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:30:48,979 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:30:48,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:30:48,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1857665487, now seen corresponding path program 1 times [2020-10-29 05:30:49,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:30:49,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734108899] [2020-10-29 05:30:49,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:30:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:30:50,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:30:55,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:30:55,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1735 [2020-10-29 05:30:55,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:30:55,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5255 [2020-10-29 05:30:55,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:30:55,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:30:55,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:30:55,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:30:55,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1726 [2020-10-29 05:30:55,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 05:30:57,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:30:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:30:57,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:30:57,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:30:57,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:30:57,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:30:57,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:30:57,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:30:57,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:30:57,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:30:57,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:30:57,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:30:57,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:31:00,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:31:00,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734108899] [2020-10-29 05:31:00,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:31:00,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 05:31:00,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764903471] [2020-10-29 05:31:00,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:31:00,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:31:00,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:31:00,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:31:00,682 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 5 states. [2020-10-29 05:31:23,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:31:23,233 INFO L93 Difference]: Finished difference Result 6315 states and 11856 transitions. [2020-10-29 05:31:23,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:31:23,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1711 [2020-10-29 05:31:23,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:31:23,297 INFO L225 Difference]: With dead ends: 6315 [2020-10-29 05:31:23,297 INFO L226 Difference]: Without dead ends: 4025 [2020-10-29 05:31:23,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:31:23,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2020-10-29 05:31:23,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3998. [2020-10-29 05:31:23,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3998 states. [2020-10-29 05:31:23,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6428 transitions. [2020-10-29 05:31:23,544 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 6428 transitions. Word has length 1711 [2020-10-29 05:31:23,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:31:23,549 INFO L481 AbstractCegarLoop]: Abstraction has 3998 states and 6428 transitions. [2020-10-29 05:31:23,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:31:23,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 6428 transitions. [2020-10-29 05:31:23,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1721 [2020-10-29 05:31:23,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:31:23,773 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:31:23,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:31:23,775 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:31:23,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:31:23,776 INFO L82 PathProgramCache]: Analyzing trace with hash 695879861, now seen corresponding path program 1 times [2020-10-29 05:31:23,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:31:23,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405110833] [2020-10-29 05:31:23,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:31:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:31:23,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:31:26,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:31:29,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:31:29,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1746 [2020-10-29 05:31:29,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:31:29,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-29 05:31:29,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:31:29,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:31:29,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:31:29,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:31:29,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1723 [2020-10-29 05:31:29,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:31:30,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:31:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:31:30,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:31:30,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:31:30,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:31:30,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:31:30,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:31:30,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:31:30,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:31:30,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:31:30,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:31:30,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:31:30,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:31:30,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:31:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:31:30,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:31:30,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:31:30,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:31:30,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:31:30,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:31:30,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:31:30,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:31:30,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:31:30,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:31:30,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:31:30,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:31:32,890 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:31:32,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405110833] [2020-10-29 05:31:32,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:31:32,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:31:32,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137569230] [2020-10-29 05:31:32,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:31:32,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:31:32,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:31:32,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:31:32,899 INFO L87 Difference]: Start difference. First operand 3998 states and 6428 transitions. Second operand 5 states. [2020-10-29 05:31:54,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:31:54,975 INFO L93 Difference]: Finished difference Result 9820 states and 16386 transitions. [2020-10-29 05:31:54,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:31:54,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1720 [2020-10-29 05:31:54,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:31:55,017 INFO L225 Difference]: With dead ends: 9820 [2020-10-29 05:31:55,017 INFO L226 Difference]: Without dead ends: 5828 [2020-10-29 05:31:55,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:31:55,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5828 states. [2020-10-29 05:31:55,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5828 to 5818. [2020-10-29 05:31:55,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5818 states. [2020-10-29 05:31:55,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5818 states to 5818 states and 8832 transitions. [2020-10-29 05:31:55,192 INFO L78 Accepts]: Start accepts. Automaton has 5818 states and 8832 transitions. Word has length 1720 [2020-10-29 05:31:55,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:31:55,196 INFO L481 AbstractCegarLoop]: Abstraction has 5818 states and 8832 transitions. [2020-10-29 05:31:55,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:31:55,196 INFO L276 IsEmpty]: Start isEmpty. Operand 5818 states and 8832 transitions. [2020-10-29 05:31:55,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1736 [2020-10-29 05:31:55,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:31:55,293 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:31:55,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:31:55,293 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:31:55,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:31:55,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1842689764, now seen corresponding path program 1 times [2020-10-29 05:31:55,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:31:55,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494174421] [2020-10-29 05:31:55,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:31:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:31:55,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:31:55,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:31:55,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:32:00,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:32:00,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1763 [2020-10-29 05:32:00,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:32:00,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5158 [2020-10-29 05:32:00,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:32:00,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:32:00,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 05:32:00,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 05:32:00,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1294 [2020-10-29 05:32:00,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:32:04,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:32:04,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:32:04,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:32:04,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:32:04,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:32:04,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:32:04,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:32:04,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:32:04,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:32:04,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:32:04,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:32:04,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:32:04,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:32:04,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:32:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:32:04,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:32:04,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:32:04,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:32:04,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:32:04,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 05:32:04,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:32:04,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:32:04,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:32:04,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:32:04,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:32:04,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:32:04,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 05:32:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:32:04,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:32:04,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:32:04,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:32:04,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:32:04,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 05:32:04,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:32:04,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:32:04,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:32:04,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:32:04,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:32:04,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:32:24,044 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 05:32:24,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494174421] [2020-10-29 05:32:24,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:32:24,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 05:32:24,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83565128] [2020-10-29 05:32:24,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 05:32:24,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:32:24,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 05:32:24,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2020-10-29 05:32:24,050 INFO L87 Difference]: Start difference. First operand 5818 states and 8832 transitions. Second operand 23 states. [2020-10-29 05:32:24,481 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-29 05:32:24,680 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 05:32:25,569 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-29 05:32:30,498 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-29 05:32:30,663 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 05:32:36,381 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-29 05:32:36,557 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 05:32:39,571 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-29 05:32:39,796 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-29 05:32:42,597 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:32:42,768 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-29 05:32:48,598 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-29 05:32:48,782 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 05:32:50,242 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 05:32:51,711 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 05:32:54,913 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:32:55,934 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:33:02,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:33:02,837 INFO L93 Difference]: Finished difference Result 12923 states and 20272 transitions. [2020-10-29 05:33:02,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 05:33:02,838 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1735 [2020-10-29 05:33:02,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:33:02,878 INFO L225 Difference]: With dead ends: 12923 [2020-10-29 05:33:02,878 INFO L226 Difference]: Without dead ends: 7111 [2020-10-29 05:33:02,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=212, Invalid=1428, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 05:33:02,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7111 states. [2020-10-29 05:33:03,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7111 to 7104. [2020-10-29 05:33:03,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7104 states. [2020-10-29 05:33:03,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7104 states to 7104 states and 10140 transitions. [2020-10-29 05:33:03,091 INFO L78 Accepts]: Start accepts. Automaton has 7104 states and 10140 transitions. Word has length 1735 [2020-10-29 05:33:03,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:33:03,094 INFO L481 AbstractCegarLoop]: Abstraction has 7104 states and 10140 transitions. [2020-10-29 05:33:03,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 05:33:03,094 INFO L276 IsEmpty]: Start isEmpty. Operand 7104 states and 10140 transitions. [2020-10-29 05:33:03,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1739 [2020-10-29 05:33:03,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:33:03,170 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:33:03,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:33:03,170 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:33:03,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:33:03,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1888284571, now seen corresponding path program 1 times [2020-10-29 05:33:03,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:33:03,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163116028] [2020-10-29 05:33:03,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:33:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:33:03,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:03,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:03,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:08,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:33:08,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1766 [2020-10-29 05:33:08,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:33:08,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5231 [2020-10-29 05:33:08,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:33:08,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:33:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 05:33:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:33:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 798 [2020-10-29 05:33:08,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:33:13,067 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2020-10-29 05:33:13,228 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 32 [2020-10-29 05:33:13,422 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 32 [2020-10-29 05:33:13,660 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 38 [2020-10-29 05:33:13,894 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 36 [2020-10-29 05:33:14,147 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2020-10-29 05:33:14,287 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 36 [2020-10-29 05:33:14,497 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 36 [2020-10-29 05:33:14,695 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 32 [2020-10-29 05:33:15,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:33:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:33:15,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:15,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:33:15,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:33:15,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:33:15,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:33:15,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:33:15,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:33:15,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:33:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:33:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:33:15,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:33:15,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:33:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:33:15,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:15,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:33:15,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:33:15,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:33:15,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:33:15,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:33:15,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:33:15,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:33:15,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:33:15,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:33:15,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:33:15,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 05:33:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:33:15,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:15,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:15,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:15,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:33:15,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 05:33:15,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:33:15,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 05:33:15,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:33:15,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:33:15,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:33:15,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:33:15,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 05:33:15,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:33:28,343 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 05:33:28,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163116028] [2020-10-29 05:33:28,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:33:28,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 05:33:28,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752382849] [2020-10-29 05:33:28,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 05:33:28,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:33:28,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 05:33:28,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2020-10-29 05:33:28,348 INFO L87 Difference]: Start difference. First operand 7104 states and 10140 transitions. Second operand 22 states. [2020-10-29 05:34:03,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:34:03,630 INFO L93 Difference]: Finished difference Result 19767 states and 29453 transitions. [2020-10-29 05:34:03,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:34:03,633 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 1738 [2020-10-29 05:34:03,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:34:03,704 INFO L225 Difference]: With dead ends: 19767 [2020-10-29 05:34:03,704 INFO L226 Difference]: Without dead ends: 12669 [2020-10-29 05:34:03,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2020-10-29 05:34:03,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12669 states. [2020-10-29 05:34:04,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12669 to 12560. [2020-10-29 05:34:04,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12560 states. [2020-10-29 05:34:04,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12560 states to 12560 states and 16235 transitions. [2020-10-29 05:34:04,111 INFO L78 Accepts]: Start accepts. Automaton has 12560 states and 16235 transitions. Word has length 1738 [2020-10-29 05:34:04,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:34:04,113 INFO L481 AbstractCegarLoop]: Abstraction has 12560 states and 16235 transitions. [2020-10-29 05:34:04,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 05:34:04,113 INFO L276 IsEmpty]: Start isEmpty. Operand 12560 states and 16235 transitions. [2020-10-29 05:34:04,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1745 [2020-10-29 05:34:04,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:34:04,177 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:34:04,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:34:04,178 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:34:04,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:34:04,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1255643729, now seen corresponding path program 1 times [2020-10-29 05:34:04,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:34:04,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738851573] [2020-10-29 05:34:04,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:34:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:34:04,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:04,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:04,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:06,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:09,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:09,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1772 [2020-10-29 05:34:09,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:34:09,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 05:34:09,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:09,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:09,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:34:09,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 05:34:09,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 05:34:09,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:34:09,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:34:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:34:09,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:09,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:09,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:34:09,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:34:09,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:34:09,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:09,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:09,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:34:09,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:34:09,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:34:09,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:34:09,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:34:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:34:09,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:09,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:09,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:34:09,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:34:09,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:34:09,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:09,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:09,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:34:09,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:34:09,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 05:34:09,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:34:09,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 05:34:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:34:09,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:09,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:09,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:09,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:09,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 05:34:09,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:34:09,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 05:34:09,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:09,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:09,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:34:09,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:34:09,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 05:34:09,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:34:11,130 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 05:34:11,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738851573] [2020-10-29 05:34:11,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:34:11,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:34:11,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011746054] [2020-10-29 05:34:11,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:34:11,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:34:11,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:34:11,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:34:11,135 INFO L87 Difference]: Start difference. First operand 12560 states and 16235 transitions. Second operand 7 states.