/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/eca-rers2012/Problem05_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 21:17:29,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 21:17:29,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 21:17:29,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 21:17:29,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 21:17:29,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 21:17:29,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 21:17:29,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 21:17:29,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 21:17:29,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 21:17:29,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 21:17:29,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 21:17:29,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 21:17:29,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 21:17:29,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 21:17:29,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 21:17:29,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 21:17:29,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 21:17:29,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 21:17:29,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 21:17:29,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 21:17:29,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 21:17:29,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 21:17:29,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 21:17:29,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 21:17:29,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 21:17:29,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 21:17:29,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 21:17:29,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 21:17:29,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 21:17:29,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 21:17:29,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 21:17:29,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 21:17:29,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 21:17:29,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 21:17:29,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 21:17:29,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 21:17:29,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 21:17:29,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 21:17:29,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 21:17:29,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 21:17:29,613 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 [2020-10-26 21:17:29,664 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 21:17:29,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 21:17:29,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 21:17:29,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 21:17:29,666 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 21:17:29,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 21:17:29,667 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 21:17:29,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 21:17:29,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 21:17:29,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 21:17:29,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 21:17:29,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 21:17:29,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 21:17:29,668 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 21:17:29,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 21:17:29,668 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 21:17:29,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 21:17:29,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 21:17:29,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 21:17:29,669 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 21:17:29,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 21:17:29,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:17:29,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 21:17:29,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 21:17:29,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 21:17:29,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 21:17:29,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 21:17:29,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 21:17:29,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 21:17:29,671 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 21:17:30,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 21:17:30,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 21:17:30,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 21:17:30,168 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 21:17:30,168 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 21:17:30,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label30.c [2020-10-26 21:17:30,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d943123b/89e6091c6f9342ddbf2d3014ff8a76d9/FLAG8634da720 [2020-10-26 21:17:31,444 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 21:17:31,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label30.c [2020-10-26 21:17:31,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d943123b/89e6091c6f9342ddbf2d3014ff8a76d9/FLAG8634da720 [2020-10-26 21:17:31,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d943123b/89e6091c6f9342ddbf2d3014ff8a76d9 [2020-10-26 21:17:31,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 21:17:31,760 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 21:17:31,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 21:17:31,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 21:17:31,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 21:17:31,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:17:31" (1/1) ... [2020-10-26 21:17:31,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b2bd5f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:17:31, skipping insertion in model container [2020-10-26 21:17:31,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:17:31" (1/1) ... [2020-10-26 21:17:31,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 21:17:32,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 21:17:34,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:17:34,261 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 21:17:35,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:17:35,727 INFO L208 MainTranslator]: Completed translation [2020-10-26 21:17:35,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:17:35 WrapperNode [2020-10-26 21:17:35,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 21:17:35,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 21:17:35,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 21:17:35,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 21:17:35,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:17:35" (1/1) ... [2020-10-26 21:17:35,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:17:35" (1/1) ... [2020-10-26 21:17:35,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:17:35" (1/1) ... [2020-10-26 21:17:35,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:17:35" (1/1) ... [2020-10-26 21:17:36,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:17:35" (1/1) ... [2020-10-26 21:17:36,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:17:35" (1/1) ... [2020-10-26 21:17:36,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:17:35" (1/1) ... [2020-10-26 21:17:36,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 21:17:36,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 21:17:36,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 21:17:36,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 21:17:36,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:17:35" (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 [2020-10-26 21:17:36,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 21:17:36,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 21:17:36,616 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 21:17:36,616 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 21:17:36,617 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 21:17:36,617 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 21:17:36,618 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 21:17:36,618 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-26 21:17:36,618 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-26 21:17:36,618 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-26 21:17:36,624 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-26 21:17:36,624 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 21:17:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 21:17:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 21:17:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 21:17:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 21:17:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-26 21:17:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-26 21:17:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-26 21:17:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-26 21:17:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 21:17:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 21:17:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 21:17:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 21:17:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 21:17:36,630 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 21:17:36,630 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 21:17:36,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 21:17:36,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 21:17:36,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 21:17:36,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 21:17:36,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 21:17:36,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 21:17:45,335 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 21:17:45,336 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 21:17:45,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:17:45 BoogieIcfgContainer [2020-10-26 21:17:45,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 21:17:45,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 21:17:45,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 21:17:45,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 21:17:45,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:17:31" (1/3) ... [2020-10-26 21:17:45,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481e8726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:17:45, skipping insertion in model container [2020-10-26 21:17:45,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:17:35" (2/3) ... [2020-10-26 21:17:45,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481e8726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:17:45, skipping insertion in model container [2020-10-26 21:17:45,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:17:45" (3/3) ... [2020-10-26 21:17:45,354 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label30.c [2020-10-26 21:17:45,365 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 21:17:45,372 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 21:17:45,387 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 21:17:45,430 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 21:17:45,430 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 21:17:45,430 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 21:17:45,430 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 21:17:45,430 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 21:17:45,431 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 21:17:45,431 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 21:17:45,431 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 21:17:45,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-26 21:17:45,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1676 [2020-10-26 21:17:45,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:17:45,664 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] [2020-10-26 21:17:45,664 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:17:45,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:17:45,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1069094879, now seen corresponding path program 1 times [2020-10-26 21:17:45,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:17:45,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206193704] [2020-10-26 21:17:45,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:17:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:17:47,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:17:52,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:17:52,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1699 [2020-10-26 21:17:52,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:17:52,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5139 [2020-10-26 21:17:52,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:17:52,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 21:17:52,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:17:52,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1690 [2020-10-26 21:17:52,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 21:17:53,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:17:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:17:54,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:17:54,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:17:54,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:17:54,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:17:54,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 21:17:54,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:17:54,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:17:54,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:17:54,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:17:54,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:17:56,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:17:56,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206193704] [2020-10-26 21:17:56,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:17:56,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 21:17:56,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349906397] [2020-10-26 21:17:57,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 21:17:57,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:17:57,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 21:17:57,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 21:17:57,024 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-26 21:18:18,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:18:18,403 INFO L93 Difference]: Finished difference Result 6315 states and 11856 transitions. [2020-10-26 21:18:18,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 21:18:18,406 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1675 [2020-10-26 21:18:18,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:18:18,467 INFO L225 Difference]: With dead ends: 6315 [2020-10-26 21:18:18,468 INFO L226 Difference]: Without dead ends: 4025 [2020-10-26 21:18:18,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 21:18:18,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2020-10-26 21:18:18,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3998. [2020-10-26 21:18:18,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3998 states. [2020-10-26 21:18:18,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6428 transitions. [2020-10-26 21:18:18,718 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 6428 transitions. Word has length 1675 [2020-10-26 21:18:18,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:18:18,723 INFO L481 AbstractCegarLoop]: Abstraction has 3998 states and 6428 transitions. [2020-10-26 21:18:18,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 21:18:18,723 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 6428 transitions. [2020-10-26 21:18:18,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1685 [2020-10-26 21:18:18,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:18:18,943 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] [2020-10-26 21:18:18,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 21:18:18,944 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:18:18,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:18:18,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1168384859, now seen corresponding path program 1 times [2020-10-26 21:18:18,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:18:18,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142320129] [2020-10-26 21:18:18,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:18:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:18:19,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:21,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:24,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:18:24,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1710 [2020-10-26 21:18:24,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:18:24,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5151 [2020-10-26 21:18:24,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:18:24,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:18:24,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:18:24,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-26 21:18:24,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:18:24,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:18:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:18:24,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:24,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:18:24,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:18:24,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:18:24,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 21:18:24,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:18:24,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:18:24,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:18:24,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:18:24,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:18:24,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:18:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:18:24,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:24,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:18:24,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 21:18:24,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:18:24,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 21:18:24,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:18:24,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:18:24,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:18:24,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 21:18:24,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:18:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:18:26,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142320129] [2020-10-26 21:18:26,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:18:26,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:18:26,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953336405] [2020-10-26 21:18:26,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:18:26,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:18:26,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:18:26,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:18:26,167 INFO L87 Difference]: Start difference. First operand 3998 states and 6428 transitions. Second operand 7 states. [2020-10-26 21:18:56,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:18:56,129 INFO L93 Difference]: Finished difference Result 11940 states and 19454 transitions. [2020-10-26 21:18:56,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:18:56,134 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1684 [2020-10-26 21:18:56,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:18:56,182 INFO L225 Difference]: With dead ends: 11940 [2020-10-26 21:18:56,183 INFO L226 Difference]: Without dead ends: 7948 [2020-10-26 21:18:56,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:18:56,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7948 states. [2020-10-26 21:18:56,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7948 to 7711. [2020-10-26 21:18:56,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7711 states. [2020-10-26 21:18:56,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7711 states to 7711 states and 11168 transitions. [2020-10-26 21:18:56,484 INFO L78 Accepts]: Start accepts. Automaton has 7711 states and 11168 transitions. Word has length 1684 [2020-10-26 21:18:56,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:18:56,485 INFO L481 AbstractCegarLoop]: Abstraction has 7711 states and 11168 transitions. [2020-10-26 21:18:56,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:18:56,486 INFO L276 IsEmpty]: Start isEmpty. Operand 7711 states and 11168 transitions. [2020-10-26 21:18:56,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1687 [2020-10-26 21:18:56,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:18:56,615 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-26 21:18:56,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 21:18:56,616 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:18:56,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:18:56,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1806010409, now seen corresponding path program 1 times [2020-10-26 21:18:56,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:18:56,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790119748] [2020-10-26 21:18:56,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:18:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:18:57,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:57,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:02,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:19:02,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1712 [2020-10-26 21:19:02,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:19:02,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5249 [2020-10-26 21:19:02,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:19:02,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:19:02,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:19:02,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-26 21:19:02,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:19:03,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:19:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:19:03,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:03,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:19:03,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:19:03,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:19:03,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 21:19:03,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:19:03,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:19:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:19:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:19:03,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:19:03,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:19:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:19:03,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:03,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:19:03,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 21:19:03,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:19:03,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 21:19:03,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:19:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:19:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:19:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 21:19:03,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:19:05,017 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:19:05,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790119748] [2020-10-26 21:19:05,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:19:05,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:19:05,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981029704] [2020-10-26 21:19:05,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:19:05,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:19:05,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:19:05,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:19:05,021 INFO L87 Difference]: Start difference. First operand 7711 states and 11168 transitions. Second operand 7 states. [2020-10-26 21:19:30,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:19:30,384 INFO L93 Difference]: Finished difference Result 19446 states and 27687 transitions. [2020-10-26 21:19:30,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:19:30,385 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1686 [2020-10-26 21:19:30,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:19:30,459 INFO L225 Difference]: With dead ends: 19446 [2020-10-26 21:19:30,459 INFO L226 Difference]: Without dead ends: 11741 [2020-10-26 21:19:30,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:19:30,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11741 states. [2020-10-26 21:19:30,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11741 to 11635. [2020-10-26 21:19:30,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11635 states. [2020-10-26 21:19:30,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11635 states to 11635 states and 15813 transitions. [2020-10-26 21:19:30,819 INFO L78 Accepts]: Start accepts. Automaton has 11635 states and 15813 transitions. Word has length 1686 [2020-10-26 21:19:30,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:19:30,820 INFO L481 AbstractCegarLoop]: Abstraction has 11635 states and 15813 transitions. [2020-10-26 21:19:30,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:19:30,820 INFO L276 IsEmpty]: Start isEmpty. Operand 11635 states and 15813 transitions. [2020-10-26 21:19:30,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1698 [2020-10-26 21:19:30,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:19:30,878 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-26 21:19:30,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 21:19:30,879 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:19:30,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:19:30,880 INFO L82 PathProgramCache]: Analyzing trace with hash 658758400, now seen corresponding path program 1 times [2020-10-26 21:19:30,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:19:30,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531719434] [2020-10-26 21:19:30,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:19:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:19:31,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:32,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:33,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:36,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:19:36,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1723 [2020-10-26 21:19:36,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:19:36,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5200 [2020-10-26 21:19:36,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:19:36,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:19:36,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:19:36,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 21:19:36,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:19:36,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:19:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:19:36,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:36,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:19:36,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:19:36,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:19:36,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 21:19:36,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:19:36,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:19:36,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:19:36,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:19:36,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:19:36,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:19:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:19:36,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:37,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:19:37,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-26 21:19:37,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:19:37,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 21:19:37,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:19:37,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:19:37,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:19:37,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 21:19:37,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:19:38,423 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:19:38,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531719434] [2020-10-26 21:19:38,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:19:38,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:19:38,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958465599] [2020-10-26 21:19:38,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:19:38,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:19:38,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:19:38,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:19:38,427 INFO L87 Difference]: Start difference. First operand 11635 states and 15813 transitions. Second operand 7 states. [2020-10-26 21:20:05,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:20:05,231 INFO L93 Difference]: Finished difference Result 29463 states and 39693 transitions. [2020-10-26 21:20:05,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:20:05,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1697 [2020-10-26 21:20:05,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:20:05,299 INFO L225 Difference]: With dead ends: 29463 [2020-10-26 21:20:05,299 INFO L226 Difference]: Without dead ends: 17834 [2020-10-26 21:20:05,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:20:05,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17834 states. [2020-10-26 21:20:05,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17834 to 17401. [2020-10-26 21:20:05,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17401 states. [2020-10-26 21:20:05,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17401 states to 17401 states and 22254 transitions. [2020-10-26 21:20:05,731 INFO L78 Accepts]: Start accepts. Automaton has 17401 states and 22254 transitions. Word has length 1697 [2020-10-26 21:20:05,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:20:05,731 INFO L481 AbstractCegarLoop]: Abstraction has 17401 states and 22254 transitions. [2020-10-26 21:20:05,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:20:05,731 INFO L276 IsEmpty]: Start isEmpty. Operand 17401 states and 22254 transitions. [2020-10-26 21:20:05,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1713 [2020-10-26 21:20:05,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:20:05,819 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-26 21:20:05,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:20:05,820 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:20:05,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:20:05,821 INFO L82 PathProgramCache]: Analyzing trace with hash -807452021, now seen corresponding path program 1 times [2020-10-26 21:20:05,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:20:05,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277219946] [2020-10-26 21:20:05,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:20:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:20:06,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:20:08,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:20:11,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:20:11,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1738 [2020-10-26 21:20:11,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:20:11,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5208 [2020-10-26 21:20:11,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:20:11,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:20:11,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:20:11,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-26 21:20:11,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:20:11,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:20:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:20:11,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:20:11,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:20:11,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:20:11,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:20:11,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 21:20:11,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:20:11,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:20:11,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:20:11,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:20:11,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:20:11,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:20:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:20:11,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:20:11,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:20:11,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-26 21:20:11,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:20:11,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 21:20:11,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:20:11,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:20:11,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:20:11,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 21:20:11,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:20:13,406 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:20:13,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277219946] [2020-10-26 21:20:13,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:20:13,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 21:20:13,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351858585] [2020-10-26 21:20:13,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:20:13,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:20:13,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:20:13,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:20:13,410 INFO L87 Difference]: Start difference. First operand 17401 states and 22254 transitions. Second operand 8 states. [2020-10-26 21:20:52,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:20:52,594 INFO L93 Difference]: Finished difference Result 66965 states and 92518 transitions. [2020-10-26 21:20:52,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 21:20:52,595 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1712 [2020-10-26 21:20:52,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:20:52,778 INFO L225 Difference]: With dead ends: 66965 [2020-10-26 21:20:52,778 INFO L226 Difference]: Without dead ends: 49570 [2020-10-26 21:20:52,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 21:20:52,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49570 states. [2020-10-26 21:20:53,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49570 to 49092. [2020-10-26 21:20:53,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49092 states. [2020-10-26 21:20:54,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49092 states to 49092 states and 63886 transitions. [2020-10-26 21:20:54,095 INFO L78 Accepts]: Start accepts. Automaton has 49092 states and 63886 transitions. Word has length 1712 [2020-10-26 21:20:54,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:20:54,096 INFO L481 AbstractCegarLoop]: Abstraction has 49092 states and 63886 transitions. [2020-10-26 21:20:54,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:20:54,096 INFO L276 IsEmpty]: Start isEmpty. Operand 49092 states and 63886 transitions. [2020-10-26 21:20:54,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1811 [2020-10-26 21:20:54,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:20:54,259 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:20:54,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 21:20:54,259 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:20:54,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:20:54,260 INFO L82 PathProgramCache]: Analyzing trace with hash -529793030, now seen corresponding path program 1 times [2020-10-26 21:20:54,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:20:54,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521071817] [2020-10-26 21:20:54,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:20:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:20:55,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:20:56,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:20:57,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:20:59,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:20:59,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1838 [2020-10-26 21:20:59,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:20:59,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5138 [2020-10-26 21:20:59,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:20:59,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:20:59,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-26 21:20:59,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-26 21:20:59,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:21:00,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:21:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:21:00,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:21:00,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:21:00,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:21:00,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:21:00,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 21:21:00,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:21:00,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:21:00,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:21:00,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:21:00,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:21:00,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:21:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:21:00,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:21:00,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:21:00,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 21:21:00,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:21:00,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-26 21:21:00,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:21:00,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:21:00,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:21:00,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-26 21:21:00,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:21:00,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-26 21:21:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:21:00,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:21:00,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:21:00,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-26 21:21:00,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:21:00,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 21:21:00,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:21:00,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:21:00,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:21:00,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 21:21:00,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:21:02,147 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 21:21:02,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521071817] [2020-10-26 21:21:02,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:21:02,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:21:02,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324595808] [2020-10-26 21:21:02,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:21:02,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:21:02,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:21:02,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:21:02,151 INFO L87 Difference]: Start difference. First operand 49092 states and 63886 transitions. Second operand 7 states.