/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:31:00,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:31:00,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:31:00,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:31:00,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:31:00,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:31:00,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:31:00,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:31:00,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:31:00,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:31:00,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:31:00,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:31:00,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:31:00,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:31:00,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:31:00,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:31:00,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:31:00,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:31:00,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:31:00,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:31:00,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:31:00,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:31:00,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:31:00,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:31:00,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:31:00,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:31:00,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:31:00,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:31:00,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:31:00,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:31:00,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:31:00,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:31:00,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:31:00,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:31:00,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:31:00,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:31:00,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:31:00,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:31:00,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:31:00,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:31:00,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:31:00,370 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:31:00,424 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:31:00,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:31:00,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:31:00,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:31:00,430 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:31:00,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:31:00,430 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:31:00,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:31:00,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:31:00,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:31:00,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:31:00,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:31:00,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:31:00,432 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:31:00,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:31:00,433 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:31:00,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:31:00,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:31:00,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:31:00,433 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:31:00,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:31:00,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:31:00,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:31:00,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:31:00,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:31:00,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:31:00,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:31:00,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:31:00,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:31:00,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:31:00,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:31:00,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:31:00,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:31:00,956 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:31:00,957 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:31:00,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 05:31:01,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6d0a840a/85991c02cbd240da94a816403dc15018/FLAG8d88ef8d8 [2020-10-27 05:31:01,744 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:31:01,744 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 05:31:01,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6d0a840a/85991c02cbd240da94a816403dc15018/FLAG8d88ef8d8 [2020-10-27 05:31:02,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6d0a840a/85991c02cbd240da94a816403dc15018 [2020-10-27 05:31:02,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:31:02,048 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:31:02,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:31:02,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:31:02,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:31:02,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:31:02" (1/1) ... [2020-10-27 05:31:02,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61a3149a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:31:02, skipping insertion in model container [2020-10-27 05:31:02,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:31:02" (1/1) ... [2020-10-27 05:31:02,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:31:02,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:31:02,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:31:02,531 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:31:02,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:31:02,694 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:31:02,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:31:02 WrapperNode [2020-10-27 05:31:02,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:31:02,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:31:02,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:31:02,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:31:02,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:31:02" (1/1) ... [2020-10-27 05:31:02,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:31:02" (1/1) ... [2020-10-27 05:31:02,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:31:02" (1/1) ... [2020-10-27 05:31:02,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:31:02" (1/1) ... [2020-10-27 05:31:02,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:31:02" (1/1) ... [2020-10-27 05:31:02,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:31:02" (1/1) ... [2020-10-27 05:31:02,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:31:02" (1/1) ... [2020-10-27 05:31:02,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:31:02,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:31:02,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:31:02,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:31:02,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:31:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:31:02,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:31:02,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:31:02,919 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:31:02,919 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:31:02,920 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:31:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:31:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:31:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:31:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:31:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:31:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:31:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 05:31:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:31:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:31:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:31:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:31:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:31:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:31:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:31:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:31:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:31:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-27 05:31:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-27 05:31:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:31:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:31:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:31:02,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:31:02,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:31:02,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:31:02,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:31:02,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:31:02,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:31:04,001 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:31:04,002 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:31:04,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:31:04 BoogieIcfgContainer [2020-10-27 05:31:04,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:31:04,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:31:04,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:31:04,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:31:04,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:31:02" (1/3) ... [2020-10-27 05:31:04,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26c4f1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:31:04, skipping insertion in model container [2020-10-27 05:31:04,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:31:02" (2/3) ... [2020-10-27 05:31:04,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26c4f1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:31:04, skipping insertion in model container [2020-10-27 05:31:04,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:31:04" (3/3) ... [2020-10-27 05:31:04,015 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 05:31:04,029 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:31:04,036 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:31:04,052 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:31:04,086 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:31:04,086 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:31:04,086 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:31:04,086 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:31:04,086 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:31:04,087 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:31:04,087 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:31:04,087 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:31:04,111 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states. [2020-10-27 05:31:04,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 05:31:04,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:31:04,125 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] [2020-10-27 05:31:04,126 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:31:04,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:31:04,133 INFO L82 PathProgramCache]: Analyzing trace with hash 825418362, now seen corresponding path program 1 times [2020-10-27 05:31:04,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:31:04,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327048147] [2020-10-27 05:31:04,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:31:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:04,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:04,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:04,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:05,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:05,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:05,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:05,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:06,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:06,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:08,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:09,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:09,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:09,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:09,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 05:31:09,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:31:09,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 05:31:09,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:09,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:31:09,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:31:09,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 05:31:09,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:31:10,119 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:31:10,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:31:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:10,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:10,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:10,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:31:10,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:31:10,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 05:31:10,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:10,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:31:10,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:31:10,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:31:10,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:31:10,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:31:10,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327048147] [2020-10-27 05:31:10,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:31:10,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:31:10,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378099990] [2020-10-27 05:31:10,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:31:10,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:31:10,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:31:10,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:31:10,304 INFO L87 Difference]: Start difference. First operand 210 states. Second operand 6 states. [2020-10-27 05:31:10,803 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:31:12,212 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 05:31:12,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:31:12,689 INFO L93 Difference]: Finished difference Result 472 states and 786 transitions. [2020-10-27 05:31:12,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:31:12,696 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2020-10-27 05:31:12,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:31:12,710 INFO L225 Difference]: With dead ends: 472 [2020-10-27 05:31:12,710 INFO L226 Difference]: Without dead ends: 310 [2020-10-27 05:31:12,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:31:12,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-27 05:31:12,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 307. [2020-10-27 05:31:12,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-10-27 05:31:12,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 441 transitions. [2020-10-27 05:31:12,804 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 441 transitions. Word has length 112 [2020-10-27 05:31:12,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:31:12,804 INFO L481 AbstractCegarLoop]: Abstraction has 307 states and 441 transitions. [2020-10-27 05:31:12,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:31:12,805 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 441 transitions. [2020-10-27 05:31:12,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 05:31:12,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:31:12,809 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] [2020-10-27 05:31:12,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:31:12,810 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:31:12,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:31:12,811 INFO L82 PathProgramCache]: Analyzing trace with hash -88706804, now seen corresponding path program 1 times [2020-10-27 05:31:12,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:31:12,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266055500] [2020-10-27 05:31:12,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:31:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:12,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:12,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:13,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:13,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:13,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:13,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:13,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:13,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:14,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:14,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:14,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:14,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:16,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:17,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:17,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 05:31:17,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:31:17,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 05:31:17,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:17,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:31:17,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:31:17,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 05:31:17,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:18,205 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:31:18,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:31:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:18,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:18,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:18,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:31:18,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:31:18,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 05:31:18,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:18,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:31:18,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:31:18,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:31:18,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:18,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:31:18,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266055500] [2020-10-27 05:31:18,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:31:18,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:31:18,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762171886] [2020-10-27 05:31:18,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:31:18,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:31:18,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:31:18,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:31:18,330 INFO L87 Difference]: Start difference. First operand 307 states and 441 transitions. Second operand 6 states. [2020-10-27 05:31:18,674 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:31:19,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:31:19,655 INFO L93 Difference]: Finished difference Result 546 states and 812 transitions. [2020-10-27 05:31:19,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:31:19,657 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-10-27 05:31:19,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:31:19,663 INFO L225 Difference]: With dead ends: 546 [2020-10-27 05:31:19,664 INFO L226 Difference]: Without dead ends: 307 [2020-10-27 05:31:19,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:31:19,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-27 05:31:19,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2020-10-27 05:31:19,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-10-27 05:31:19,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 438 transitions. [2020-10-27 05:31:19,744 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 438 transitions. Word has length 113 [2020-10-27 05:31:19,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:31:19,744 INFO L481 AbstractCegarLoop]: Abstraction has 307 states and 438 transitions. [2020-10-27 05:31:19,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:31:19,745 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 438 transitions. [2020-10-27 05:31:19,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 05:31:19,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:31:19,754 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] [2020-10-27 05:31:19,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:31:19,755 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:31:19,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:31:19,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1128010458, now seen corresponding path program 1 times [2020-10-27 05:31:19,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:31:19,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246434650] [2020-10-27 05:31:19,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:31:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:19,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:19,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:19,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:20,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:20,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:20,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:20,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:20,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:21,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:24,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:24,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 05:31:24,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:31:24,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 05:31:24,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:24,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:31:24,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:31:24,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 05:31:24,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:25,200 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:31:25,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:31:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:25,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:25,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:25,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:31:25,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:31:25,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 05:31:25,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:25,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:31:25,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:31:25,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:31:25,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:31:25,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246434650] [2020-10-27 05:31:25,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:31:25,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:31:25,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723890326] [2020-10-27 05:31:25,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:31:25,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:31:25,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:31:25,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:31:25,322 INFO L87 Difference]: Start difference. First operand 307 states and 438 transitions. Second operand 6 states. [2020-10-27 05:31:25,649 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:31:26,513 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 05:31:26,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:31:26,933 INFO L93 Difference]: Finished difference Result 750 states and 1126 transitions. [2020-10-27 05:31:26,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:31:26,936 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-10-27 05:31:26,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:31:26,942 INFO L225 Difference]: With dead ends: 750 [2020-10-27 05:31:26,942 INFO L226 Difference]: Without dead ends: 507 [2020-10-27 05:31:26,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:31:26,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-10-27 05:31:27,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 504. [2020-10-27 05:31:27,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-10-27 05:31:27,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 748 transitions. [2020-10-27 05:31:27,017 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 748 transitions. Word has length 114 [2020-10-27 05:31:27,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:31:27,018 INFO L481 AbstractCegarLoop]: Abstraction has 504 states and 748 transitions. [2020-10-27 05:31:27,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:31:27,018 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 748 transitions. [2020-10-27 05:31:27,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 05:31:27,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:31:27,028 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] [2020-10-27 05:31:27,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:31:27,028 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:31:27,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:31:27,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1705283355, now seen corresponding path program 1 times [2020-10-27 05:31:27,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:31:27,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018765997] [2020-10-27 05:31:27,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:31:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:27,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:27,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:27,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:27,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:27,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:27,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:27,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:28,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:28,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:29,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:29,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:30,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:32,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:32,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 05:31:32,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:31:32,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 05:31:32,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:32,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:31:32,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:31:32,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 05:31:32,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:32,497 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:31:32,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:31:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:32,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:32,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:32,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:31:32,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:31:32,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 05:31:32,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:32,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:31:32,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:31:32,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:31:32,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:31:32,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:31:32,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018765997] [2020-10-27 05:31:32,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:31:32,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:31:32,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170017082] [2020-10-27 05:31:32,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:31:32,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:31:32,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:31:32,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:31:32,619 INFO L87 Difference]: Start difference. First operand 504 states and 748 transitions. Second operand 6 states. [2020-10-27 05:31:32,992 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:31:33,806 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 05:31:34,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:31:34,226 INFO L93 Difference]: Finished difference Result 1243 states and 1907 transitions. [2020-10-27 05:31:34,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:31:34,227 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-10-27 05:31:34,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:31:34,235 INFO L225 Difference]: With dead ends: 1243 [2020-10-27 05:31:34,236 INFO L226 Difference]: Without dead ends: 819 [2020-10-27 05:31:34,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:31:34,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-10-27 05:31:34,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 816. [2020-10-27 05:31:34,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-10-27 05:31:34,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1235 transitions. [2020-10-27 05:31:34,325 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1235 transitions. Word has length 115 [2020-10-27 05:31:34,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:31:34,326 INFO L481 AbstractCegarLoop]: Abstraction has 816 states and 1235 transitions. [2020-10-27 05:31:34,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:31:34,326 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1235 transitions. [2020-10-27 05:31:34,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 05:31:34,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:31:34,328 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] [2020-10-27 05:31:34,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:31:34,328 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:31:34,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:31:34,329 INFO L82 PathProgramCache]: Analyzing trace with hash -272605124, now seen corresponding path program 1 times [2020-10-27 05:31:34,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:31:34,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499879695] [2020-10-27 05:31:34,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:31:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:34,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:34,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:34,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:34,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:34,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:34,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:34,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:35,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:39,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:39,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 05:31:39,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:31:39,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 05:31:39,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:39,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:31:39,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:31:39,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 05:31:39,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:39,827 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:31:39,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:31:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:39,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:39,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:39,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:31:39,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:31:39,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 05:31:39,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:39,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:31:39,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:31:39,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:31:39,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:31:39,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:31:39,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499879695] [2020-10-27 05:31:39,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:31:39,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:31:39,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43463853] [2020-10-27 05:31:39,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:31:39,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:31:39,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:31:39,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:31:39,928 INFO L87 Difference]: Start difference. First operand 816 states and 1235 transitions. Second operand 6 states. [2020-10-27 05:31:40,240 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:31:41,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:31:41,132 INFO L93 Difference]: Finished difference Result 1560 states and 2397 transitions. [2020-10-27 05:31:41,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:31:41,132 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-10-27 05:31:41,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:31:41,138 INFO L225 Difference]: With dead ends: 1560 [2020-10-27 05:31:41,138 INFO L226 Difference]: Without dead ends: 816 [2020-10-27 05:31:41,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:31:41,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2020-10-27 05:31:41,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2020-10-27 05:31:41,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-10-27 05:31:41,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1226 transitions. [2020-10-27 05:31:41,203 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1226 transitions. Word has length 116 [2020-10-27 05:31:41,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:31:41,203 INFO L481 AbstractCegarLoop]: Abstraction has 816 states and 1226 transitions. [2020-10-27 05:31:41,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:31:41,204 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1226 transitions. [2020-10-27 05:31:41,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-27 05:31:41,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:31:41,205 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] [2020-10-27 05:31:41,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:31:41,206 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:31:41,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:31:41,206 INFO L82 PathProgramCache]: Analyzing trace with hash -184900325, now seen corresponding path program 1 times [2020-10-27 05:31:41,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:31:41,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914584373] [2020-10-27 05:31:41,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:31:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:41,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:41,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:41,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:41,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:41,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:41,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:43,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:43,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:43,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:44,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:46,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:46,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 05:31:46,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:31:46,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 05:31:46,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:46,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:31:46,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:31:46,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 05:31:46,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:46,746 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:31:46,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:31:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:46,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:46,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:46,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:31:46,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:31:46,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 05:31:46,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:46,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:31:46,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:31:46,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:31:46,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:46,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:31:46,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914584373] [2020-10-27 05:31:46,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:31:46,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:31:46,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383204098] [2020-10-27 05:31:46,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:31:46,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:31:46,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:31:46,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:31:46,886 INFO L87 Difference]: Start difference. First operand 816 states and 1226 transitions. Second operand 11 states. [2020-10-27 05:31:47,296 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-27 05:31:48,530 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:31:48,864 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-27 05:31:49,907 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-27 05:31:49,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:31:49,970 INFO L93 Difference]: Finished difference Result 2413 states and 3724 transitions. [2020-10-27 05:31:49,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:31:49,971 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 117 [2020-10-27 05:31:49,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:31:49,982 INFO L225 Difference]: With dead ends: 2413 [2020-10-27 05:31:49,982 INFO L226 Difference]: Without dead ends: 1746 [2020-10-27 05:31:49,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2020-10-27 05:31:49,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2020-10-27 05:31:50,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 816. [2020-10-27 05:31:50,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-10-27 05:31:50,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1224 transitions. [2020-10-27 05:31:50,091 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1224 transitions. Word has length 117 [2020-10-27 05:31:50,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:31:50,092 INFO L481 AbstractCegarLoop]: Abstraction has 816 states and 1224 transitions. [2020-10-27 05:31:50,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:31:50,092 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1224 transitions. [2020-10-27 05:31:50,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 05:31:50,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:31:50,094 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] [2020-10-27 05:31:50,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:31:50,095 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:31:50,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:31:50,095 INFO L82 PathProgramCache]: Analyzing trace with hash -746280322, now seen corresponding path program 1 times [2020-10-27 05:31:50,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:31:50,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683049361] [2020-10-27 05:31:50,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:31:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:50,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:50,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:50,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:50,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:50,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:50,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:52,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:52,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:52,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:52,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:54,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:54,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:54,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:54,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:55,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:55,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 05:31:55,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:31:55,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 05:31:55,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:55,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:31:55,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:31:55,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 05:31:55,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:55,423 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:31:55,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:31:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:55,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:55,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:55,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:31:55,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:31:55,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 05:31:55,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:55,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:31:55,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:31:55,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:31:55,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:55,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:31:55,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683049361] [2020-10-27 05:31:55,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:31:55,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:31:55,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514502468] [2020-10-27 05:31:55,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:31:55,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:31:55,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:31:55,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:31:55,512 INFO L87 Difference]: Start difference. First operand 816 states and 1224 transitions. Second operand 6 states. [2020-10-27 05:31:55,807 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:31:56,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:31:56,640 INFO L93 Difference]: Finished difference Result 1556 states and 2371 transitions. [2020-10-27 05:31:56,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:31:56,641 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-10-27 05:31:56,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:31:56,645 INFO L225 Difference]: With dead ends: 1556 [2020-10-27 05:31:56,646 INFO L226 Difference]: Without dead ends: 816 [2020-10-27 05:31:56,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:31:56,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2020-10-27 05:31:56,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2020-10-27 05:31:56,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-10-27 05:31:56,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1215 transitions. [2020-10-27 05:31:56,730 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1215 transitions. Word has length 118 [2020-10-27 05:31:56,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:31:56,731 INFO L481 AbstractCegarLoop]: Abstraction has 816 states and 1215 transitions. [2020-10-27 05:31:56,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:31:56,731 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1215 transitions. [2020-10-27 05:31:56,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 05:31:56,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:31:56,733 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] [2020-10-27 05:31:56,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:31:56,733 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:31:56,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:31:56,734 INFO L82 PathProgramCache]: Analyzing trace with hash 237514316, now seen corresponding path program 1 times [2020-10-27 05:31:56,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:31:56,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599151848] [2020-10-27 05:31:56,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:31:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:56,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:56,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:56,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:56,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:57,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:57,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:57,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:58,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:58,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:59,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:59,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:59,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:00,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:00,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:00,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:01,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:01,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:01,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 05:32:01,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 05:32:01,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 05:32:01,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:01,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:32:01,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:32:01,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 05:32:01,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:02,199 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:32:02,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:32:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:02,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:02,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:02,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:32:02,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:32:02,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 05:32:02,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:02,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:32:02,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:32:02,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:32:02,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:32:02,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599151848] [2020-10-27 05:32:02,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:32:02,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:32:02,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750474539] [2020-10-27 05:32:02,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:32:02,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:32:02,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:32:02,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:32:02,300 INFO L87 Difference]: Start difference. First operand 816 states and 1215 transitions. Second operand 11 states. [2020-10-27 05:32:02,680 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 05:32:04,050 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:32:04,369 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 05:32:05,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:32:05,024 INFO L93 Difference]: Finished difference Result 2154 states and 3275 transitions. [2020-10-27 05:32:05,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:32:05,025 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 119 [2020-10-27 05:32:05,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:32:05,033 INFO L225 Difference]: With dead ends: 2154 [2020-10-27 05:32:05,033 INFO L226 Difference]: Without dead ends: 1503 [2020-10-27 05:32:05,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2020-10-27 05:32:05,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2020-10-27 05:32:05,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 816. [2020-10-27 05:32:05,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-10-27 05:32:05,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1211 transitions. [2020-10-27 05:32:05,149 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1211 transitions. Word has length 119 [2020-10-27 05:32:05,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:32:05,150 INFO L481 AbstractCegarLoop]: Abstraction has 816 states and 1211 transitions. [2020-10-27 05:32:05,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:32:05,150 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1211 transitions. [2020-10-27 05:32:05,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 05:32:05,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:32:05,152 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] [2020-10-27 05:32:05,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:32:05,152 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:32:05,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:32:05,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1346740061, now seen corresponding path program 1 times [2020-10-27 05:32:05,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:32:05,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656991564] [2020-10-27 05:32:05,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:32:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:05,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:05,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:05,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:05,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:05,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:05,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:06,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:06,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:06,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:06,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:06,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:06,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:08,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:08,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:08,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:08,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:10,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:10,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 05:32:10,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 05:32:10,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 05:32:10,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:10,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:32:10,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:32:10,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 05:32:10,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:10,562 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:32:10,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:32:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:10,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:10,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:10,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:32:10,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:32:10,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:32:10,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:10,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:32:10,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:32:10,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:32:10,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:10,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:32:10,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656991564] [2020-10-27 05:32:10,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:32:10,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:32:10,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963167081] [2020-10-27 05:32:10,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:32:10,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:32:10,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:32:10,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:32:10,635 INFO L87 Difference]: Start difference. First operand 816 states and 1211 transitions. Second operand 6 states. [2020-10-27 05:32:10,953 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:32:11,765 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 05:32:12,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:32:12,240 INFO L93 Difference]: Finished difference Result 2163 states and 3287 transitions. [2020-10-27 05:32:12,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:32:12,242 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-10-27 05:32:12,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:32:12,249 INFO L225 Difference]: With dead ends: 2163 [2020-10-27 05:32:12,249 INFO L226 Difference]: Without dead ends: 1431 [2020-10-27 05:32:12,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:32:12,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2020-10-27 05:32:12,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1428. [2020-10-27 05:32:12,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1428 states. [2020-10-27 05:32:12,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 2150 transitions. [2020-10-27 05:32:12,465 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 2150 transitions. Word has length 120 [2020-10-27 05:32:12,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:32:12,466 INFO L481 AbstractCegarLoop]: Abstraction has 1428 states and 2150 transitions. [2020-10-27 05:32:12,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:32:12,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 2150 transitions. [2020-10-27 05:32:12,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 05:32:12,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:32:12,468 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] [2020-10-27 05:32:12,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:32:12,469 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:32:12,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:32:12,469 INFO L82 PathProgramCache]: Analyzing trace with hash -93888817, now seen corresponding path program 1 times [2020-10-27 05:32:12,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:32:12,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813711212] [2020-10-27 05:32:12,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:32:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:12,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:12,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:12,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:12,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:12,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:13,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:13,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:14,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:14,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:14,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:14,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:15,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:15,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:15,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:16,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:17,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:17,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:17,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 05:32:17,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 05:32:17,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 05:32:17,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:17,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 05:32:17,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:32:17,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 05:32:17,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:17,986 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:32:17,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:32:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:18,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:18,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:18,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:32:18,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:32:18,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 05:32:18,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:18,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:32:18,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:32:18,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:32:18,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:18,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:32:18,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813711212] [2020-10-27 05:32:18,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:32:18,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 05:32:18,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413395706] [2020-10-27 05:32:18,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 05:32:18,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:32:18,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 05:32:18,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-27 05:32:18,120 INFO L87 Difference]: Start difference. First operand 1428 states and 2150 transitions. Second operand 13 states. [2020-10-27 05:32:18,528 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-27 05:32:20,726 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-27 05:32:21,079 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:32:26,636 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-27 05:32:26,960 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:32:27,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:32:27,564 INFO L93 Difference]: Finished difference Result 13568 states and 20576 transitions. [2020-10-27 05:32:27,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 05:32:27,564 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 121 [2020-10-27 05:32:27,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:32:27,624 INFO L225 Difference]: With dead ends: 13568 [2020-10-27 05:32:27,625 INFO L226 Difference]: Without dead ends: 12265 [2020-10-27 05:32:27,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=397, Invalid=1409, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 05:32:27,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12265 states. [2020-10-27 05:32:27,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12265 to 1434. [2020-10-27 05:32:27,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1434 states. [2020-10-27 05:32:27,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 2154 transitions. [2020-10-27 05:32:27,980 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 2154 transitions. Word has length 121 [2020-10-27 05:32:27,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:32:27,981 INFO L481 AbstractCegarLoop]: Abstraction has 1434 states and 2154 transitions. [2020-10-27 05:32:27,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 05:32:27,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 2154 transitions. [2020-10-27 05:32:27,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 05:32:27,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:32:27,983 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] [2020-10-27 05:32:27,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:32:27,984 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:32:27,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:32:27,984 INFO L82 PathProgramCache]: Analyzing trace with hash -11585371, now seen corresponding path program 1 times [2020-10-27 05:32:27,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:32:27,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127709825] [2020-10-27 05:32:27,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:32:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:28,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:28,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:28,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:28,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:28,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:29,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:29,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:29,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:30,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:30,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:30,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:33,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:33,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 05:32:33,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:32:33,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 05:32:33,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:33,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:32:33,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:32:33,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 05:32:33,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:33,441 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:32:33,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:32:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:33,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:33,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:33,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:32:33,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:32:33,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:32:33,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:33,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:32:33,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:32:33,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:32:33,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:33,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:32:33,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127709825] [2020-10-27 05:32:33,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:32:33,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:32:33,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741184242] [2020-10-27 05:32:33,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:32:33,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:32:33,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:32:33,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:32:33,514 INFO L87 Difference]: Start difference. First operand 1434 states and 2154 transitions. Second operand 11 states. [2020-10-27 05:32:33,881 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:32:35,254 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 05:32:35,595 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-27 05:32:37,071 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:32:37,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:32:37,253 INFO L93 Difference]: Finished difference Result 4569 states and 6982 transitions. [2020-10-27 05:32:37,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 05:32:37,253 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 122 [2020-10-27 05:32:37,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:32:37,271 INFO L225 Difference]: With dead ends: 4569 [2020-10-27 05:32:37,271 INFO L226 Difference]: Without dead ends: 3300 [2020-10-27 05:32:37,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=184, Invalid=628, Unknown=0, NotChecked=0, Total=812 [2020-10-27 05:32:37,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2020-10-27 05:32:37,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 1428. [2020-10-27 05:32:37,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1428 states. [2020-10-27 05:32:37,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 2146 transitions. [2020-10-27 05:32:37,564 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 2146 transitions. Word has length 122 [2020-10-27 05:32:37,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:32:37,564 INFO L481 AbstractCegarLoop]: Abstraction has 1428 states and 2146 transitions. [2020-10-27 05:32:37,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:32:37,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 2146 transitions. [2020-10-27 05:32:37,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 05:32:37,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:32:37,567 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] [2020-10-27 05:32:37,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:32:37,567 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:32:37,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:32:37,567 INFO L82 PathProgramCache]: Analyzing trace with hash 854040384, now seen corresponding path program 1 times [2020-10-27 05:32:37,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:32:37,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712751077] [2020-10-27 05:32:37,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:32:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:37,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:37,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:37,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:37,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:37,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:38,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:38,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:39,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:39,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:39,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:42,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:42,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 05:32:42,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:32:42,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 05:32:42,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:42,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 05:32:42,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:32:42,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 05:32:42,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:43,113 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:32:43,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:32:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:43,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:43,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:43,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:32:43,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:32:43,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:32:43,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:32:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:32:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:32:43,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:32:43,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712751077] [2020-10-27 05:32:43,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:32:43,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 05:32:43,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103382654] [2020-10-27 05:32:43,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 05:32:43,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:32:43,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 05:32:43,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-27 05:32:43,186 INFO L87 Difference]: Start difference. First operand 1428 states and 2146 transitions. Second operand 13 states. [2020-10-27 05:32:43,567 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-27 05:32:45,594 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 05:32:45,952 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-27 05:32:50,693 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:32:51,043 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:32:51,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:32:51,713 INFO L93 Difference]: Finished difference Result 16328 states and 24794 transitions. [2020-10-27 05:32:51,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 05:32:51,713 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 122 [2020-10-27 05:32:51,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:32:51,760 INFO L225 Difference]: With dead ends: 16328 [2020-10-27 05:32:51,761 INFO L226 Difference]: Without dead ends: 15045 [2020-10-27 05:32:51,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=370, Invalid=1352, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 05:32:51,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15045 states. [2020-10-27 05:32:52,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15045 to 1440. [2020-10-27 05:32:52,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1440 states. [2020-10-27 05:32:52,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 2158 transitions. [2020-10-27 05:32:52,235 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 2158 transitions. Word has length 122 [2020-10-27 05:32:52,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:32:52,235 INFO L481 AbstractCegarLoop]: Abstraction has 1440 states and 2158 transitions. [2020-10-27 05:32:52,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 05:32:52,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 2158 transitions. [2020-10-27 05:32:52,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 05:32:52,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:32:52,237 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] [2020-10-27 05:32:52,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:32:52,238 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:32:52,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:32:52,238 INFO L82 PathProgramCache]: Analyzing trace with hash -2088835227, now seen corresponding path program 1 times [2020-10-27 05:32:52,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:32:52,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649134907] [2020-10-27 05:32:52,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:32:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:52,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:52,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:52,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:52,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:52,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:55,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:55,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:55,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:55,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:56,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:56,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:56,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:57,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:57,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 05:32:57,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:32:57,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 05:32:57,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:57,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:32:57,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:32:57,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 05:32:57,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:57,720 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:32:57,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:32:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:57,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:57,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:57,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:32:57,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:32:57,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 05:32:57,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:57,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:32:57,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:32:57,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:32:57,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:32:57,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649134907] [2020-10-27 05:32:57,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:32:57,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:32:57,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404444182] [2020-10-27 05:32:57,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:32:57,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:32:57,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:32:57,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:32:57,865 INFO L87 Difference]: Start difference. First operand 1440 states and 2158 transitions. Second operand 11 states. [2020-10-27 05:32:58,217 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-27 05:32:59,600 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-27 05:32:59,918 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 05:33:01,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:33:01,222 INFO L93 Difference]: Finished difference Result 3974 states and 6046 transitions. [2020-10-27 05:33:01,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:33:01,223 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 123 [2020-10-27 05:33:01,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:33:01,229 INFO L225 Difference]: With dead ends: 3974 [2020-10-27 05:33:01,229 INFO L226 Difference]: Without dead ends: 2735 [2020-10-27 05:33:01,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2020-10-27 05:33:01,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2020-10-27 05:33:01,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 1440. [2020-10-27 05:33:01,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1440 states. [2020-10-27 05:33:01,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 2154 transitions. [2020-10-27 05:33:01,645 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 2154 transitions. Word has length 123 [2020-10-27 05:33:01,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:33:01,646 INFO L481 AbstractCegarLoop]: Abstraction has 1440 states and 2154 transitions. [2020-10-27 05:33:01,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:33:01,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 2154 transitions. [2020-10-27 05:33:01,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 05:33:01,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:33:01,648 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] [2020-10-27 05:33:01,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 05:33:01,648 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:33:01,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:33:01,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1373158412, now seen corresponding path program 1 times [2020-10-27 05:33:01,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:33:01,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646950169] [2020-10-27 05:33:01,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:33:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:01,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:01,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:01,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:02,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:02,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:04,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:04,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:04,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:05,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:06,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:06,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 05:33:06,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:33:06,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 05:33:06,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:06,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 05:33:06,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:33:06,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 05:33:06,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:07,258 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:33:07,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:33:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:07,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:07,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:07,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:33:07,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:33:07,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:33:07,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:07,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:33:07,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:33:07,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:33:07,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:07,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:33:07,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646950169] [2020-10-27 05:33:07,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:33:07,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 05:33:07,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140115466] [2020-10-27 05:33:07,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 05:33:07,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:33:07,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 05:33:07,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-27 05:33:07,362 INFO L87 Difference]: Start difference. First operand 1440 states and 2154 transitions. Second operand 13 states. [2020-10-27 05:33:07,770 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-27 05:33:10,033 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:33:10,431 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-27 05:33:13,664 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:33:14,017 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-27 05:33:15,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:33:15,582 INFO L93 Difference]: Finished difference Result 9284 states and 14058 transitions. [2020-10-27 05:33:15,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 05:33:15,583 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 124 [2020-10-27 05:33:15,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:33:15,600 INFO L225 Difference]: With dead ends: 9284 [2020-10-27 05:33:15,600 INFO L226 Difference]: Without dead ends: 8049 [2020-10-27 05:33:15,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=397, Invalid=1409, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 05:33:15,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8049 states. [2020-10-27 05:33:16,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8049 to 1468. [2020-10-27 05:33:16,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1468 states. [2020-10-27 05:33:16,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2190 transitions. [2020-10-27 05:33:16,114 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2190 transitions. Word has length 124 [2020-10-27 05:33:16,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:33:16,114 INFO L481 AbstractCegarLoop]: Abstraction has 1468 states and 2190 transitions. [2020-10-27 05:33:16,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 05:33:16,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2190 transitions. [2020-10-27 05:33:16,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-27 05:33:16,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:33:16,116 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] [2020-10-27 05:33:16,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 05:33:16,116 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:33:16,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:33:16,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1509640352, now seen corresponding path program 1 times [2020-10-27 05:33:16,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:33:16,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289314337] [2020-10-27 05:33:16,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:33:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:16,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:16,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:16,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:16,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:16,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:18,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:19,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:21,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:21,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 05:33:21,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:33:21,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 05:33:21,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:21,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 05:33:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:33:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 05:33:21,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:21,686 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:33:21,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:33:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:21,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:21,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:21,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:33:21,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:33:21,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 05:33:21,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:21,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:33:21,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:33:21,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:33:21,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:21,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:33:21,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289314337] [2020-10-27 05:33:21,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:33:21,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 05:33:21,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854153977] [2020-10-27 05:33:21,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 05:33:21,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:33:21,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 05:33:21,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-27 05:33:21,762 INFO L87 Difference]: Start difference. First operand 1468 states and 2190 transitions. Second operand 12 states. [2020-10-27 05:33:22,193 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-27 05:33:24,194 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 05:33:24,563 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-27 05:33:27,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:33:27,783 INFO L93 Difference]: Finished difference Result 8715 states and 13279 transitions. [2020-10-27 05:33:27,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 05:33:27,784 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 125 [2020-10-27 05:33:27,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:33:27,799 INFO L225 Difference]: With dead ends: 8715 [2020-10-27 05:33:27,799 INFO L226 Difference]: Without dead ends: 7480 [2020-10-27 05:33:27,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=276, Invalid=846, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 05:33:27,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7480 states. [2020-10-27 05:33:28,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7480 to 1551. [2020-10-27 05:33:28,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1551 states. [2020-10-27 05:33:28,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1551 states to 1551 states and 2301 transitions. [2020-10-27 05:33:28,423 INFO L78 Accepts]: Start accepts. Automaton has 1551 states and 2301 transitions. Word has length 125 [2020-10-27 05:33:28,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:33:28,423 INFO L481 AbstractCegarLoop]: Abstraction has 1551 states and 2301 transitions. [2020-10-27 05:33:28,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 05:33:28,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1551 states and 2301 transitions. [2020-10-27 05:33:28,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-27 05:33:28,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:33:28,425 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] [2020-10-27 05:33:28,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 05:33:28,425 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:33:28,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:33:28,426 INFO L82 PathProgramCache]: Analyzing trace with hash -884258912, now seen corresponding path program 1 times [2020-10-27 05:33:28,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:33:28,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253222591] [2020-10-27 05:33:28,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:33:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:28,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:28,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:28,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:28,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:28,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:31,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:31,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:33,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:33,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 05:33:33,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:33:33,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4958 [2020-10-27 05:33:33,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:33,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:33:33,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:33:33,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 05:33:33,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:33,852 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:33:33,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:33:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:33,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:33,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:33,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:33:33,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:33:33,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 05:33:33,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:33,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:33:33,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:33:33,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:33:33,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:33,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:33:33,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253222591] [2020-10-27 05:33:33,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:33:33,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:33:33,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513641479] [2020-10-27 05:33:33,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:33:33,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:33:33,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:33:33,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:33:33,961 INFO L87 Difference]: Start difference. First operand 1551 states and 2301 transitions. Second operand 10 states. [2020-10-27 05:33:34,303 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:33:35,477 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 05:33:35,801 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 05:33:37,314 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:33:37,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:33:37,908 INFO L93 Difference]: Finished difference Result 4628 states and 7055 transitions. [2020-10-27 05:33:37,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 05:33:37,909 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2020-10-27 05:33:37,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:33:37,913 INFO L225 Difference]: With dead ends: 4628 [2020-10-27 05:33:37,913 INFO L226 Difference]: Without dead ends: 3310 [2020-10-27 05:33:37,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2020-10-27 05:33:37,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3310 states. [2020-10-27 05:33:38,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3310 to 1468. [2020-10-27 05:33:38,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1468 states. [2020-10-27 05:33:38,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2189 transitions. [2020-10-27 05:33:38,338 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2189 transitions. Word has length 125 [2020-10-27 05:33:38,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:33:38,339 INFO L481 AbstractCegarLoop]: Abstraction has 1468 states and 2189 transitions. [2020-10-27 05:33:38,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:33:38,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2189 transitions. [2020-10-27 05:33:38,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-27 05:33:38,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:33:38,340 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] [2020-10-27 05:33:38,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 05:33:38,340 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:33:38,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:33:38,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1390713661, now seen corresponding path program 1 times [2020-10-27 05:33:38,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:33:38,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904577084] [2020-10-27 05:33:38,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:33:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:38,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:38,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:38,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:38,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:39,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:43,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:43,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 05:33:43,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:33:43,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 05:33:43,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-27 05:33:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:33:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-27 05:33:43,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:44,499 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 36 [2020-10-27 05:33:44,965 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 51 [2020-10-27 05:33:45,229 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 77 [2020-10-27 05:33:45,465 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2020-10-27 05:33:45,804 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 80 [2020-10-27 05:33:46,064 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 71 [2020-10-27 05:33:46,396 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 78 [2020-10-27 05:33:46,649 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2020-10-27 05:33:47,021 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 82 [2020-10-27 05:33:47,338 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 71 [2020-10-27 05:33:47,781 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 86 [2020-10-27 05:33:48,084 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 71 [2020-10-27 05:33:48,633 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 111 [2020-10-27 05:33:48,907 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2020-10-27 05:33:49,209 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2020-10-27 05:33:51,736 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:33:51,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:33:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:51,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:51,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:51,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:33:51,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:33:51,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 05:33:51,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:51,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:33:51,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:33:51,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:33:51,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:33:52,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904577084] [2020-10-27 05:33:52,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:33:52,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2020-10-27 05:33:52,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945192418] [2020-10-27 05:33:52,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-27 05:33:52,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:33:52,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-27 05:33:52,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1297, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 05:33:52,167 INFO L87 Difference]: Start difference. First operand 1468 states and 2189 transitions. Second operand 38 states. [2020-10-27 05:33:53,538 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 235 DAG size of output: 212 [2020-10-27 05:33:56,467 WARN L193 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 409 DAG size of output: 386 [2020-10-27 05:33:58,554 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2020-10-27 05:33:59,064 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2020-10-27 05:33:59,824 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 113 [2020-10-27 05:34:00,674 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 131 [2020-10-27 05:34:01,785 WARN L193 SmtUtils]: Spent 845.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 150 [2020-10-27 05:34:03,051 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 197 DAG size of output: 168 [2020-10-27 05:34:04,716 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 229 DAG size of output: 195 [2020-10-27 05:34:06,566 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 255 DAG size of output: 217 [2020-10-27 05:34:09,697 WARN L193 SmtUtils]: Spent 2.78 s on a formula simplification. DAG size of input: 290 DAG size of output: 247 [2020-10-27 05:34:13,103 WARN L193 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 313 DAG size of output: 265 [2020-10-27 05:34:17,391 WARN L193 SmtUtils]: Spent 3.91 s on a formula simplification. DAG size of input: 371 DAG size of output: 302 [2020-10-27 05:34:22,311 WARN L193 SmtUtils]: Spent 4.57 s on a formula simplification. DAG size of input: 396 DAG size of output: 335 [2020-10-27 05:34:28,211 WARN L193 SmtUtils]: Spent 5.43 s on a formula simplification. DAG size of input: 423 DAG size of output: 362 [2020-10-27 05:34:28,776 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 101 [2020-10-27 05:34:29,358 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 101 [2020-10-27 05:34:30,093 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 119 [2020-10-27 05:34:30,766 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 113 [2020-10-27 05:34:31,179 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-27 05:34:31,987 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 85 [2020-10-27 05:34:32,332 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-27 05:34:34,808 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60