/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:44:59,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:44:59,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:44:59,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:44:59,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:44:59,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:44:59,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:44:59,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:44:59,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:44:59,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:44:59,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:44:59,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:44:59,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:44:59,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:44:59,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:44:59,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:44:59,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:44:59,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:44:59,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:44:59,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:44:59,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:44:59,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:44:59,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:44:59,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:44:59,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:44:59,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:44:59,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:44:59,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:44:59,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:44:59,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:44:59,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:44:59,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:44:59,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:44:59,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:44:59,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:44:59,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:44:59,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:44:59,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:44:59,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:44:59,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:44:59,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:44:59,471 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 05:44:59,515 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:44:59,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:44:59,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:44:59,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:44:59,521 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:44:59,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:44:59,521 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:44:59,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:44:59,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:44:59,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:44:59,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:44:59,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:44:59,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:44:59,523 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:44:59,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:44:59,523 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:44:59,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:44:59,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:44:59,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:44:59,524 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:44:59,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:44:59,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:44:59,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:44:59,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:44:59,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:44:59,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:44:59,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:44:59,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:44:59,526 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:44:59,526 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:44:59,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:44:59,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:45:00,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:45:00,002 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:45:00,002 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:45:00,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label40.c [2020-10-29 05:45:00,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13ce1eb73/e258470f8e5143f7b0843734c84fc446/FLAG3edf69157 [2020-10-29 05:45:01,421 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:45:01,421 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label40.c [2020-10-29 05:45:01,473 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13ce1eb73/e258470f8e5143f7b0843734c84fc446/FLAG3edf69157 [2020-10-29 05:45:01,630 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13ce1eb73/e258470f8e5143f7b0843734c84fc446 [2020-10-29 05:45:01,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:45:01,640 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:45:01,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:45:01,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:45:01,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:45:01,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:45:01" (1/1) ... [2020-10-29 05:45:01,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58fb9ac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:01, skipping insertion in model container [2020-10-29 05:45:01,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:45:01" (1/1) ... [2020-10-29 05:45:01,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:45:01,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:45:03,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:45:03,877 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:45:04,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:45:05,004 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:45:05,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:05 WrapperNode [2020-10-29 05:45:05,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:45:05,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:45:05,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:45:05,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:45:05,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:05" (1/1) ... [2020-10-29 05:45:05,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:05" (1/1) ... [2020-10-29 05:45:05,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:05" (1/1) ... [2020-10-29 05:45:05,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:05" (1/1) ... [2020-10-29 05:45:05,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:05" (1/1) ... [2020-10-29 05:45:05,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:05" (1/1) ... [2020-10-29 05:45:05,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:05" (1/1) ... [2020-10-29 05:45:05,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:45:05,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:45:05,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:45:05,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:45:05,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:45:05,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:45:05,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:45:05,721 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:45:05,721 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:45:05,721 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:45:05,721 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:45:05,721 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:45:05,722 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:45:05,722 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:45:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:45:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:45:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:45:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:45:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:45:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:45:05,724 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:45:05,724 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:45:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:45:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:45:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:45:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:45:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:45:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:45:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:45:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:45:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:45:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:45:13,301 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:45:13,302 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:45:13,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:45:13 BoogieIcfgContainer [2020-10-29 05:45:13,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:45:13,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:45:13,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:45:13,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:45:13,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:45:01" (1/3) ... [2020-10-29 05:45:13,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6401ada4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:45:13, skipping insertion in model container [2020-10-29 05:45:13,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:05" (2/3) ... [2020-10-29 05:45:13,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6401ada4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:45:13, skipping insertion in model container [2020-10-29 05:45:13,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:45:13" (3/3) ... [2020-10-29 05:45:13,316 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label40.c [2020-10-29 05:45:13,328 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:45:13,334 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:45:13,348 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:45:13,385 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:45:13,385 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:45:13,385 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:45:13,385 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:45:13,385 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:45:13,386 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:45:13,386 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:45:13,386 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:45:13,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-29 05:45:13,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 987 [2020-10-29 05:45:13,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:45:13,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:45:13,507 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:45:13,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:45:13,515 INFO L82 PathProgramCache]: Analyzing trace with hash 614977840, now seen corresponding path program 1 times [2020-10-29 05:45:13,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:45:13,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570712311] [2020-10-29 05:45:13,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:45:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:15,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:17,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:19,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:19,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1004 [2020-10-29 05:45:19,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:45:19,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5102 [2020-10-29 05:45:19,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:19,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:19,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 05:45:19,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:45:19,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 995 [2020-10-29 05:45:19,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 05:45:21,486 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:45:21,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:45:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:21,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:21,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:21,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:45:21,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:45:21,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 05:45:21,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:21,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:21,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:45:21,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:45:21,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:45:21,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:45:23,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:45:23,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570712311] [2020-10-29 05:45:23,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:45:23,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 05:45:23,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734920330] [2020-10-29 05:45:23,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:45:23,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:45:23,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:45:23,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:45:23,082 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 5 states. [2020-10-29 05:45:23,312 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:45:23,765 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:45:47,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:45:47,395 INFO L93 Difference]: Finished difference Result 4838 states and 9120 transitions. [2020-10-29 05:45:47,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:45:47,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 986 [2020-10-29 05:45:47,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:45:47,444 INFO L225 Difference]: With dead ends: 4838 [2020-10-29 05:45:47,444 INFO L226 Difference]: Without dead ends: 3451 [2020-10-29 05:45:47,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:45:47,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3451 states. [2020-10-29 05:45:47,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3451 to 3411. [2020-10-29 05:45:47,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3411 states. [2020-10-29 05:45:47,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3411 states to 3411 states and 5720 transitions. [2020-10-29 05:45:47,673 INFO L78 Accepts]: Start accepts. Automaton has 3411 states and 5720 transitions. Word has length 986 [2020-10-29 05:45:47,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:45:47,678 INFO L481 AbstractCegarLoop]: Abstraction has 3411 states and 5720 transitions. [2020-10-29 05:45:47,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:45:47,679 INFO L276 IsEmpty]: Start isEmpty. Operand 3411 states and 5720 transitions. [2020-10-29 05:45:47,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1007 [2020-10-29 05:45:47,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:45:47,726 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:45:47,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:45:47,728 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:45:47,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:45:47,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1692089366, now seen corresponding path program 1 times [2020-10-29 05:45:47,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:45:47,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236230418] [2020-10-29 05:45:47,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:45:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:47,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:48,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:49,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:53,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:53,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1028 [2020-10-29 05:45:53,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:45:53,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5149 [2020-10-29 05:45:53,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:53,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:53,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 05:45:53,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:45:53,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 05:45:53,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:45:54,363 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:45:54,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:45:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:54,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:54,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:54,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:45:54,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:45:54,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:45:54,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:54,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:54,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:45:54,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:45:54,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:45:54,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:45:54,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:45:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:54,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:54,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:54,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:45:54,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:45:54,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 05:45:54,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:54,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:45:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:45:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 05:45:54,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:45:54,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:45:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:54,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:54,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:54,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:45:54,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:45:54,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 05:45:54,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:54,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:54,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:45:54,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:45:54,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 05:45:54,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:45:55,311 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 05:45:55,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236230418] [2020-10-29 05:45:55,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:45:55,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:45:55,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872854946] [2020-10-29 05:45:55,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:45:55,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:45:55,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:45:55,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:45:55,316 INFO L87 Difference]: Start difference. First operand 3411 states and 5720 transitions. Second operand 7 states. [2020-10-29 05:45:55,572 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:46:17,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:46:17,235 INFO L93 Difference]: Finished difference Result 10340 states and 17431 transitions. [2020-10-29 05:46:17,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 05:46:17,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1006 [2020-10-29 05:46:17,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:46:17,281 INFO L225 Difference]: With dead ends: 10340 [2020-10-29 05:46:17,282 INFO L226 Difference]: Without dead ends: 6935 [2020-10-29 05:46:17,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-29 05:46:17,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6935 states. [2020-10-29 05:46:17,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6935 to 6900. [2020-10-29 05:46:17,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6900 states. [2020-10-29 05:46:17,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6900 states to 6900 states and 11588 transitions. [2020-10-29 05:46:17,543 INFO L78 Accepts]: Start accepts. Automaton has 6900 states and 11588 transitions. Word has length 1006 [2020-10-29 05:46:17,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:46:17,544 INFO L481 AbstractCegarLoop]: Abstraction has 6900 states and 11588 transitions. [2020-10-29 05:46:17,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:46:17,544 INFO L276 IsEmpty]: Start isEmpty. Operand 6900 states and 11588 transitions. [2020-10-29 05:46:17,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1007 [2020-10-29 05:46:17,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:46:17,575 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:46:17,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:46:17,575 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:46:17,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:46:17,576 INFO L82 PathProgramCache]: Analyzing trace with hash 215846610, now seen corresponding path program 1 times [2020-10-29 05:46:17,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:46:17,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457247237] [2020-10-29 05:46:17,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:46:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:46:17,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:19,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:22,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:46:22,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1026 [2020-10-29 05:46:22,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:46:22,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 05:46:22,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:46:22,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:46:22,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:46:22,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 05:46:22,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 992 [2020-10-29 05:46:22,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:46:23,585 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:46:23,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:46:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:46:23,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:23,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:46:23,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:46:23,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:46:23,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:46:23,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:46:23,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:46:23,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:46:23,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:46:23,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:46:23,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:46:23,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:46:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:46:23,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:23,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:46:23,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:46:23,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:46:23,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 05:46:23,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:46:23,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:46:23,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:46:23,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:46:23,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 05:46:23,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:46:24,859 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:46:24,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457247237] [2020-10-29 05:46:24,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:46:24,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:46:24,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206293818] [2020-10-29 05:46:24,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:46:24,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:46:24,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:46:24,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:46:24,863 INFO L87 Difference]: Start difference. First operand 6900 states and 11588 transitions. Second operand 5 states. [2020-10-29 05:46:25,147 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:46:45,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:46:45,348 INFO L93 Difference]: Finished difference Result 20151 states and 34566 transitions. [2020-10-29 05:46:45,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:46:45,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1006 [2020-10-29 05:46:45,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:46:45,451 INFO L225 Difference]: With dead ends: 20151 [2020-10-29 05:46:45,452 INFO L226 Difference]: Without dead ends: 13257 [2020-10-29 05:46:45,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:46:45,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13257 states. [2020-10-29 05:46:45,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13257 to 13234. [2020-10-29 05:46:45,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13234 states. [2020-10-29 05:46:45,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13234 states to 13234 states and 21011 transitions. [2020-10-29 05:46:45,880 INFO L78 Accepts]: Start accepts. Automaton has 13234 states and 21011 transitions. Word has length 1006 [2020-10-29 05:46:45,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:46:45,882 INFO L481 AbstractCegarLoop]: Abstraction has 13234 states and 21011 transitions. [2020-10-29 05:46:45,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:46:45,882 INFO L276 IsEmpty]: Start isEmpty. Operand 13234 states and 21011 transitions. [2020-10-29 05:46:45,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2020-10-29 05:46:45,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:46:45,933 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:46:45,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:46:45,933 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:46:45,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:46:45,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1612133245, now seen corresponding path program 1 times [2020-10-29 05:46:45,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:46:45,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751750685] [2020-10-29 05:46:45,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:46:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:46:46,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:46,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:51,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:46:51,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1044 [2020-10-29 05:46:51,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:46:51,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5187 [2020-10-29 05:46:51,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:46:51,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:46:51,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:46:51,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:46:51,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 05:46:51,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:46:51,718 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:46:51,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:46:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:46:51,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:51,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:46:51,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:46:51,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:46:51,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 05:46:51,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:46:51,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:46:51,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:46:51,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:46:51,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:46:51,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:46:51,870 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:46:51,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:46:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:46:51,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:51,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:46:51,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:46:51,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:46:51,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 05:46:51,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:46:51,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:46:51,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:46:51,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:46:51,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 05:46:51,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:46:51,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 05:46:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:46:52,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:52,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:46:52,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:46:52,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:46:52,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:46:52,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:46:52,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:46:52,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:46:52,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 05:46:52,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:46:52,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:46:52,624 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 28 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 05:46:52,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751750685] [2020-10-29 05:46:52,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:46:52,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:46:52,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089509314] [2020-10-29 05:46:52,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:46:52,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:46:52,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:46:52,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:46:52,627 INFO L87 Difference]: Start difference. First operand 13234 states and 21011 transitions. Second operand 7 states. [2020-10-29 05:46:53,013 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:46:54,662 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:47:13,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:47:13,806 INFO L93 Difference]: Finished difference Result 39967 states and 66074 transitions. [2020-10-29 05:47:13,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:47:13,807 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1022 [2020-10-29 05:47:13,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:47:13,919 INFO L225 Difference]: With dead ends: 39967 [2020-10-29 05:47:13,919 INFO L226 Difference]: Without dead ends: 26739 [2020-10-29 05:47:13,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:47:14,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26739 states. [2020-10-29 05:47:14,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26739 to 26457. [2020-10-29 05:47:14,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26457 states. [2020-10-29 05:47:14,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26457 states to 26457 states and 40339 transitions. [2020-10-29 05:47:14,878 INFO L78 Accepts]: Start accepts. Automaton has 26457 states and 40339 transitions. Word has length 1022 [2020-10-29 05:47:14,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:47:14,879 INFO L481 AbstractCegarLoop]: Abstraction has 26457 states and 40339 transitions. [2020-10-29 05:47:14,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:47:14,879 INFO L276 IsEmpty]: Start isEmpty. Operand 26457 states and 40339 transitions. [2020-10-29 05:47:14,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1043 [2020-10-29 05:47:14,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:47:14,985 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:47:14,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:47:14,986 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:47:14,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:47:14,987 INFO L82 PathProgramCache]: Analyzing trace with hash 2111098132, now seen corresponding path program 1 times [2020-10-29 05:47:14,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:47:14,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074505413] [2020-10-29 05:47:14,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:47:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:15,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:15,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:20,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:20,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1064 [2020-10-29 05:47:20,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:47:20,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-29 05:47:20,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:20,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:20,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:47:20,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 05:47:20,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 05:47:20,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:20,810 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:47:20,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:47:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:20,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:20,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:20,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:47:20,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:47:20,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:47:20,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:20,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:20,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:47:20,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:47:20,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:47:20,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:20,961 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:47:20,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:47:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:20,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:20,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:20,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:47:20,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:47:20,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:47:20,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:20,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:20,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:47:20,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:47:20,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 05:47:20,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:20,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:47:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:21,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:21,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:21,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 05:47:21,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:47:21,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 05:47:21,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:21,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:21,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:47:21,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:47:21,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 05:47:21,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 05:47:21,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074505413] [2020-10-29 05:47:21,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:47:21,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:47:21,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257115437] [2020-10-29 05:47:21,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:47:21,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:47:21,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:47:21,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:47:21,694 INFO L87 Difference]: Start difference. First operand 26457 states and 40339 transitions. Second operand 7 states. [2020-10-29 05:47:21,978 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:47:23,232 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:47:42,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:47:42,847 INFO L93 Difference]: Finished difference Result 80520 states and 131504 transitions. [2020-10-29 05:47:42,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:47:42,851 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1042 [2020-10-29 05:47:42,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:47:43,082 INFO L225 Difference]: With dead ends: 80520 [2020-10-29 05:47:43,082 INFO L226 Difference]: Without dead ends: 54069 [2020-10-29 05:47:43,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:47:43,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54069 states. [2020-10-29 05:47:44,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54069 to 53652. [2020-10-29 05:47:44,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53652 states. [2020-10-29 05:47:44,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53652 states to 53652 states and 81012 transitions. [2020-10-29 05:47:44,867 INFO L78 Accepts]: Start accepts. Automaton has 53652 states and 81012 transitions. Word has length 1042 [2020-10-29 05:47:44,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:47:44,867 INFO L481 AbstractCegarLoop]: Abstraction has 53652 states and 81012 transitions. [2020-10-29 05:47:44,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:47:44,867 INFO L276 IsEmpty]: Start isEmpty. Operand 53652 states and 81012 transitions. [2020-10-29 05:47:45,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1064 [2020-10-29 05:47:45,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:47:45,033 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:47:45,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:47:45,033 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:47:45,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:47:45,034 INFO L82 PathProgramCache]: Analyzing trace with hash 432339599, now seen corresponding path program 1 times [2020-10-29 05:47:45,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:47:45,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541918080] [2020-10-29 05:47:45,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:47:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:45,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:45,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:46,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:50,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:50,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1087 [2020-10-29 05:47:50,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:47:50,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 05:47:50,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:50,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:47:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 05:47:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 05:47:50,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:50,665 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:47:50,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:47:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:50,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:50,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:50,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:47:50,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:47:50,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:47:50,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:50,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:50,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:47:50,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:47:50,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:47:50,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:50,808 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:47:50,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:47:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:50,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:50,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:50,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 05:47:50,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:47:50,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:47:50,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:50,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:50,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:47:50,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:47:50,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:47:50,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:50,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 05:47:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:50,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:50,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:50,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:47:50,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:47:50,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 05:47:50,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:50,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:50,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:47:50,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:47:50,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 05:47:50,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:50,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 05:47:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:50,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:51,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:51,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 05:47:51,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:47:51,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 05:47:51,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:51,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:51,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:47:51,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:47:51,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 05:47:51,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:52,001 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 05:47:52,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541918080] [2020-10-29 05:47:52,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:47:52,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:47:52,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229653523] [2020-10-29 05:47:52,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:47:52,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:47:52,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:47:52,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:47:52,005 INFO L87 Difference]: Start difference. First operand 53652 states and 81012 transitions. Second operand 8 states. [2020-10-29 05:47:52,421 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:47:52,856 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:47:54,245 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:48:35,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:48:35,501 INFO L93 Difference]: Finished difference Result 265196 states and 473033 transitions. [2020-10-29 05:48:35,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 05:48:35,502 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1063 [2020-10-29 05:48:35,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:48:37,287 INFO L225 Difference]: With dead ends: 265196 [2020-10-29 05:48:37,287 INFO L226 Difference]: Without dead ends: 211550 [2020-10-29 05:48:37,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 05:48:37,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211550 states.