/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 21:02:52,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 21:02:52,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 21:02:52,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 21:02:52,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 21:02:52,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 21:02:52,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 21:02:52,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 21:02:52,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 21:02:52,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 21:02:52,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 21:02:52,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 21:02:52,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 21:02:52,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 21:02:52,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 21:02:52,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 21:02:52,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 21:02:52,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 21:02:52,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 21:02:52,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 21:02:52,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 21:02:52,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 21:02:52,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 21:02:52,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 21:02:52,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 21:02:52,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 21:02:52,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 21:02:52,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 21:02:52,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 21:02:52,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 21:02:52,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 21:02:52,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 21:02:52,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 21:02:52,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 21:02:52,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 21:02:52,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 21:02:52,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 21:02:52,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 21:02:52,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 21:02:52,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 21:02:52,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 21:02:52,641 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 21:02:52,692 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 21:02:52,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 21:02:52,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 21:02:52,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 21:02:52,697 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 21:02:52,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 21:02:52,697 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 21:02:52,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 21:02:52,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 21:02:52,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 21:02:52,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 21:02:52,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 21:02:52,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 21:02:52,700 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 21:02:52,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 21:02:52,700 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 21:02:52,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 21:02:52,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 21:02:52,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 21:02:52,701 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 21:02:52,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 21:02:52,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:02:52,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 21:02:52,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 21:02:52,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 21:02:52,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 21:02:52,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 21:02:52,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 21:02:52,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 21:02:52,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 21:02:53,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 21:02:53,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 21:02:53,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 21:02:53,125 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 21:02:53,126 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 21:02:53,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label35.c [2020-10-26 21:02:53,202 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d25439ae/1f76d150725945f39bf802cfbe3a022f/FLAG31ef5f299 [2020-10-26 21:02:54,220 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 21:02:54,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label35.c [2020-10-26 21:02:54,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d25439ae/1f76d150725945f39bf802cfbe3a022f/FLAG31ef5f299 [2020-10-26 21:02:54,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d25439ae/1f76d150725945f39bf802cfbe3a022f [2020-10-26 21:02:54,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 21:02:54,720 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 21:02:54,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 21:02:54,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 21:02:54,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 21:02:54,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:02:54" (1/1) ... [2020-10-26 21:02:54,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd4ab53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:54, skipping insertion in model container [2020-10-26 21:02:54,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:02:54" (1/1) ... [2020-10-26 21:02:54,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 21:02:54,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 21:02:56,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:02:56,304 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 21:02:57,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:02:57,187 INFO L208 MainTranslator]: Completed translation [2020-10-26 21:02:57,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:57 WrapperNode [2020-10-26 21:02:57,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 21:02:57,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 21:02:57,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 21:02:57,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 21:02:57,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:57" (1/1) ... [2020-10-26 21:02:57,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:57" (1/1) ... [2020-10-26 21:02:57,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:57" (1/1) ... [2020-10-26 21:02:57,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:57" (1/1) ... [2020-10-26 21:02:57,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:57" (1/1) ... [2020-10-26 21:02:57,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:57" (1/1) ... [2020-10-26 21:02:57,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:57" (1/1) ... [2020-10-26 21:02:57,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 21:02:57,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 21:02:57,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 21:02:57,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 21:02:57,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:02:57,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 21:02:57,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 21:02:57,640 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 21:02:57,641 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 21:02:57,641 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 21:02:57,641 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 21:02:57,641 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 21:02:57,642 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 21:02:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 21:02:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 21:02:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 21:02:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 21:02:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 21:02:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 21:02:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 21:02:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 21:02:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 21:02:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 21:02:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 21:02:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 21:02:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 21:02:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 21:02:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 21:02:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 21:02:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 21:03:03,009 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 21:03:03,010 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 21:03:03,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:03:03 BoogieIcfgContainer [2020-10-26 21:03:03,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 21:03:03,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 21:03:03,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 21:03:03,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 21:03:03,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:02:54" (1/3) ... [2020-10-26 21:03:03,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d1563d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:03:03, skipping insertion in model container [2020-10-26 21:03:03,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:02:57" (2/3) ... [2020-10-26 21:03:03,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d1563d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:03:03, skipping insertion in model container [2020-10-26 21:03:03,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:03:03" (3/3) ... [2020-10-26 21:03:03,024 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label35.c [2020-10-26 21:03:03,037 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 21:03:03,044 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 21:03:03,060 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 21:03:03,096 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 21:03:03,096 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 21:03:03,097 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 21:03:03,097 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 21:03:03,097 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 21:03:03,097 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 21:03:03,097 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 21:03:03,097 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 21:03:03,136 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-26 21:03:03,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2020-10-26 21:03:03,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:03:03,190 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] [2020-10-26 21:03:03,190 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:03:03,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:03:03,198 INFO L82 PathProgramCache]: Analyzing trace with hash 2029485084, now seen corresponding path program 1 times [2020-10-26 21:03:03,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:03:03,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596088550] [2020-10-26 21:03:03,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:03:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:04,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:08,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:08,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 802 [2020-10-26 21:03:08,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:03:08,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-26 21:03:08,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:08,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 21:03:08,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:03:08,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 793 [2020-10-26 21:03:08,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 21:03:09,802 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:03:09,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:03:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:09,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:09,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:09,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:03:09,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:03:09,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 21:03:09,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:03:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:03:09,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:03:09,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:03:10,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:03:10,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596088550] [2020-10-26 21:03:10,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:03:10,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 21:03:10,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135121786] [2020-10-26 21:03:10,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 21:03:10,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:03:10,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 21:03:10,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 21:03:10,843 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-26 21:03:11,033 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:03:22,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:03:22,248 INFO L93 Difference]: Finished difference Result 2677 states and 5140 transitions. [2020-10-26 21:03:22,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 21:03:22,252 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 786 [2020-10-26 21:03:22,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:03:22,314 INFO L225 Difference]: With dead ends: 2677 [2020-10-26 21:03:22,314 INFO L226 Difference]: Without dead ends: 1703 [2020-10-26 21:03:22,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 21:03:22,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-26 21:03:22,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1699. [2020-10-26 21:03:22,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-10-26 21:03:22,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2781 transitions. [2020-10-26 21:03:22,494 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2781 transitions. Word has length 786 [2020-10-26 21:03:22,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:03:22,497 INFO L481 AbstractCegarLoop]: Abstraction has 1699 states and 2781 transitions. [2020-10-26 21:03:22,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 21:03:22,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2781 transitions. [2020-10-26 21:03:22,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2020-10-26 21:03:22,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:03:22,530 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:03:22,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 21:03:22,531 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:03:22,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:03:22,532 INFO L82 PathProgramCache]: Analyzing trace with hash 407290909, now seen corresponding path program 1 times [2020-10-26 21:03:22,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:03:22,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782601491] [2020-10-26 21:03:22,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:03:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:22,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:24,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:27,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:27,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 815 [2020-10-26 21:03:27,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:03:27,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-26 21:03:27,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:27,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:03:27,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:03:27,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-26 21:03:27,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 21:03:27,890 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:03:27,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:03:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:27,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:27,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:27,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:03:27,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:03:27,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 21:03:27,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:27,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:03:27,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:03:27,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:03:27,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-26 21:03:27,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:03:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:27,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:28,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:28,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 21:03:28,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:03:28,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 21:03:28,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:28,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:03:28,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:03:28,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 21:03:28,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:03:28,576 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:03:28,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782601491] [2020-10-26 21:03:28,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:03:28,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:03:28,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697676801] [2020-10-26 21:03:28,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:03:28,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:03:28,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:03:28,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:03:28,587 INFO L87 Difference]: Start difference. First operand 1699 states and 2781 transitions. Second operand 7 states. [2020-10-26 21:03:28,727 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:03:31,904 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:03:42,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:03:42,140 INFO L93 Difference]: Finished difference Result 5134 states and 8447 transitions. [2020-10-26 21:03:42,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 21:03:42,141 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 797 [2020-10-26 21:03:42,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:03:42,168 INFO L225 Difference]: With dead ends: 5134 [2020-10-26 21:03:42,169 INFO L226 Difference]: Without dead ends: 3441 [2020-10-26 21:03:42,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:03:42,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3441 states. [2020-10-26 21:03:42,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3441 to 3426. [2020-10-26 21:03:42,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3426 states. [2020-10-26 21:03:42,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3426 states to 3426 states and 4976 transitions. [2020-10-26 21:03:42,309 INFO L78 Accepts]: Start accepts. Automaton has 3426 states and 4976 transitions. Word has length 797 [2020-10-26 21:03:42,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:03:42,310 INFO L481 AbstractCegarLoop]: Abstraction has 3426 states and 4976 transitions. [2020-10-26 21:03:42,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:03:42,310 INFO L276 IsEmpty]: Start isEmpty. Operand 3426 states and 4976 transitions. [2020-10-26 21:03:42,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 804 [2020-10-26 21:03:42,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:03:42,345 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 21:03:42,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 21:03:42,346 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:03:42,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:03:42,347 INFO L82 PathProgramCache]: Analyzing trace with hash 474434545, now seen corresponding path program 1 times [2020-10-26 21:03:42,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:03:42,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081855154] [2020-10-26 21:03:42,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:03:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:42,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:43,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:46,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:47,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:47,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 821 [2020-10-26 21:03:47,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:03:47,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-26 21:03:47,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:47,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:03:47,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:03:47,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 21:03:47,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:03:47,760 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:03:47,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:03:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:47,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:47,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:47,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:03:47,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:03:47,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 21:03:47,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:47,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:03:47,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:03:47,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:03:47,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:03:47,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:03:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:03:47,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:03:47,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:03:47,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 21:03:47,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:03:47,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 21:03:47,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:03:47,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:03:47,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:03:47,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 21:03:47,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:03:48,281 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:03:48,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081855154] [2020-10-26 21:03:48,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:03:48,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 21:03:48,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922917155] [2020-10-26 21:03:48,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:03:48,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:03:48,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:03:48,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:03:48,284 INFO L87 Difference]: Start difference. First operand 3426 states and 4976 transitions. Second operand 8 states. [2020-10-26 21:03:48,434 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 21:03:55,632 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-26 21:04:02,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:04:02,723 INFO L93 Difference]: Finished difference Result 10450 states and 15411 transitions. [2020-10-26 21:04:02,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:04:02,728 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 803 [2020-10-26 21:04:02,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:04:02,770 INFO L225 Difference]: With dead ends: 10450 [2020-10-26 21:04:02,770 INFO L226 Difference]: Without dead ends: 7030 [2020-10-26 21:04:02,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:04:02,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7030 states. [2020-10-26 21:04:03,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7030 to 6990. [2020-10-26 21:04:03,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6990 states. [2020-10-26 21:04:03,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6990 states to 6990 states and 9578 transitions. [2020-10-26 21:04:03,071 INFO L78 Accepts]: Start accepts. Automaton has 6990 states and 9578 transitions. Word has length 803 [2020-10-26 21:04:03,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:04:03,071 INFO L481 AbstractCegarLoop]: Abstraction has 6990 states and 9578 transitions. [2020-10-26 21:04:03,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:04:03,071 INFO L276 IsEmpty]: Start isEmpty. Operand 6990 states and 9578 transitions. [2020-10-26 21:04:03,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2020-10-26 21:04:03,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:04:03,094 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 21:04:03,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 21:04:03,095 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:04:03,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:04:03,096 INFO L82 PathProgramCache]: Analyzing trace with hash 655367821, now seen corresponding path program 1 times [2020-10-26 21:04:03,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:04:03,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565575322] [2020-10-26 21:04:03,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:04:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:03,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:04,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:07,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:08,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:08,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 823 [2020-10-26 21:04:08,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:04:08,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 21:04:08,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:08,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 21:04:08,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:04:08,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 814 [2020-10-26 21:04:08,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:08,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:04:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:08,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:08,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:08,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:04:08,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:04:08,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 21:04:08,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:08,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:04:08,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:04:08,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:04:08,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:08,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:04:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:08,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:09,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:09,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:09,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:04:09,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:04:09,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 21:04:09,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:09,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:04:09,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:04:09,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:04:09,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:09,778 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 21:04:09,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565575322] [2020-10-26 21:04:09,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:04:09,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 21:04:09,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841817092] [2020-10-26 21:04:09,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 21:04:09,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:04:09,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 21:04:09,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 21:04:09,781 INFO L87 Difference]: Start difference. First operand 6990 states and 9578 transitions. Second operand 6 states. [2020-10-26 21:04:09,929 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:04:21,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:04:21,697 INFO L93 Difference]: Finished difference Result 20953 states and 29478 transitions. [2020-10-26 21:04:21,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 21:04:21,698 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 805 [2020-10-26 21:04:21,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:04:21,790 INFO L225 Difference]: With dead ends: 20953 [2020-10-26 21:04:21,790 INFO L226 Difference]: Without dead ends: 13969 [2020-10-26 21:04:21,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:04:21,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13969 states. [2020-10-26 21:04:22,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13969 to 13950. [2020-10-26 21:04:22,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13950 states. [2020-10-26 21:04:22,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13950 states to 13950 states and 18066 transitions. [2020-10-26 21:04:22,205 INFO L78 Accepts]: Start accepts. Automaton has 13950 states and 18066 transitions. Word has length 805 [2020-10-26 21:04:22,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:04:22,207 INFO L481 AbstractCegarLoop]: Abstraction has 13950 states and 18066 transitions. [2020-10-26 21:04:22,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 21:04:22,208 INFO L276 IsEmpty]: Start isEmpty. Operand 13950 states and 18066 transitions. [2020-10-26 21:04:22,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2020-10-26 21:04:22,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:04:22,252 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:04:22,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:04:22,253 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:04:22,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:04:22,254 INFO L82 PathProgramCache]: Analyzing trace with hash -826803792, now seen corresponding path program 1 times [2020-10-26 21:04:22,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:04:22,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506565952] [2020-10-26 21:04:22,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:04:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:22,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:23,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:23,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:27,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:27,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:27,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 898 [2020-10-26 21:04:27,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:04:27,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5238 [2020-10-26 21:04:27,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:27,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-26 21:04:27,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:04:27,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 889 [2020-10-26 21:04:27,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:28,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:04:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:28,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:28,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:28,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:04:28,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:04:28,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 21:04:28,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:28,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:04:28,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:04:28,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:04:28,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:28,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:04:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:28,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:28,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:28,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:28,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:04:28,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:04:28,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 21:04:28,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:28,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:04:28,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:04:28,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:04:28,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:28,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:04:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:28,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:28,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:28,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:28,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 21:04:28,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:04:28,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-26 21:04:28,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:28,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:04:28,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:04:28,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 21:04:28,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:29,190 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-26 21:04:29,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506565952] [2020-10-26 21:04:29,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:04:29,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 21:04:29,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718377857] [2020-10-26 21:04:29,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:04:29,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:04:29,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:04:29,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:04:29,194 INFO L87 Difference]: Start difference. First operand 13950 states and 18066 transitions. Second operand 7 states. [2020-10-26 21:04:42,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:04:42,542 INFO L93 Difference]: Finished difference Result 40653 states and 53765 transitions. [2020-10-26 21:04:42,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 21:04:42,543 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 878 [2020-10-26 21:04:42,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:04:42,657 INFO L225 Difference]: With dead ends: 40653 [2020-10-26 21:04:42,657 INFO L226 Difference]: Without dead ends: 26709 [2020-10-26 21:04:42,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-26 21:04:42,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26709 states. [2020-10-26 21:04:43,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26709 to 22487. [2020-10-26 21:04:43,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22487 states. [2020-10-26 21:04:43,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22487 states to 22487 states and 30084 transitions. [2020-10-26 21:04:43,339 INFO L78 Accepts]: Start accepts. Automaton has 22487 states and 30084 transitions. Word has length 878 [2020-10-26 21:04:43,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:04:43,343 INFO L481 AbstractCegarLoop]: Abstraction has 22487 states and 30084 transitions. [2020-10-26 21:04:43,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:04:43,343 INFO L276 IsEmpty]: Start isEmpty. Operand 22487 states and 30084 transitions. [2020-10-26 21:04:43,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1010 [2020-10-26 21:04:43,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:04:43,420 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:04:43,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 21:04:43,420 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:04:43,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:04:43,421 INFO L82 PathProgramCache]: Analyzing trace with hash 517137301, now seen corresponding path program 1 times [2020-10-26 21:04:43,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:04:43,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189316274] [2020-10-26 21:04:43,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:04:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:43,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:43,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:43,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:46,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:47,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:48,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:48,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1035 [2020-10-26 21:04:48,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 21:04:48,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-26 21:04:48,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:48,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:04:48,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:04:48,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 21:04:48,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:48,865 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:04:48,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:04:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:48,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:48,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:48,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:04:48,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:04:48,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 21:04:48,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:48,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:04:48,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:04:48,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:04:48,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:48,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:04:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:48,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:48,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:48,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:48,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:04:48,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:04:48,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 21:04:48,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:04:48,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:04:48,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:04:48,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:48,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:04:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:49,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:49,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:49,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 21:04:49,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:04:49,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-26 21:04:49,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:49,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:04:49,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:04:49,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 21:04:49,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:49,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-26 21:04:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:49,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:49,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:49,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 21:04:49,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:04:49,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 21:04:49,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:04:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-26 21:04:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:04:49,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:49,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-26 21:04:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:49,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:49,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:49,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 21:04:49,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:04:49,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 21:04:49,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:49,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:04:49,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 21:04:49,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:04:49,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:49,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-26 21:04:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:04:49,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:04:49,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:04:49,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 21:04:49,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:04:49,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 21:04:49,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:04:49,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:04:49,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-26 21:04:49,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:04:49,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:04:49,872 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 221 proven. 130 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-26 21:04:49,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189316274] [2020-10-26 21:04:49,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:04:49,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 21:04:49,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376438890] [2020-10-26 21:04:49,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 21:04:49,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:04:49,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 21:04:49,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-26 21:04:49,875 INFO L87 Difference]: Start difference. First operand 22487 states and 30084 transitions. Second operand 9 states. [2020-10-26 21:04:50,005 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:04:58,707 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:05:04,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:05:04,644 INFO L93 Difference]: Finished difference Result 58568 states and 79324 transitions. [2020-10-26 21:05:04,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:05:04,645 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1009 [2020-10-26 21:05:04,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:05:04,785 INFO L225 Difference]: With dead ends: 58568 [2020-10-26 21:05:04,786 INFO L226 Difference]: Without dead ends: 36087 [2020-10-26 21:05:04,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-10-26 21:05:04,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36087 states. [2020-10-26 21:05:05,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36087 to 36008. [2020-10-26 21:05:05,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36008 states. [2020-10-26 21:05:05,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36008 states to 36008 states and 44256 transitions. [2020-10-26 21:05:05,687 INFO L78 Accepts]: Start accepts. Automaton has 36008 states and 44256 transitions. Word has length 1009 [2020-10-26 21:05:05,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:05:05,687 INFO L481 AbstractCegarLoop]: Abstraction has 36008 states and 44256 transitions. [2020-10-26 21:05:05,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 21:05:05,688 INFO L276 IsEmpty]: Start isEmpty. Operand 36008 states and 44256 transitions. [2020-10-26 21:05:05,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1087 [2020-10-26 21:05:05,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:05:05,773 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 21:05:05,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 21:05:05,774 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:05:05,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:05:05,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1782158344, now seen corresponding path program 1 times [2020-10-26 21:05:05,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:05:05,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492468227] [2020-10-26 21:05:05,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:05:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:05,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:06,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:06,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:11,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:11,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1110 [2020-10-26 21:05:11,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:05:11,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5160 [2020-10-26 21:05:11,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:11,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:05:11,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:05:11,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 21:05:11,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:11,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:05:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:11,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:11,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:11,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:05:11,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:11,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 21:05:11,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:11,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:05:11,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:05:11,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:05:11,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:11,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:05:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:11,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:11,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:11,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:11,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:05:11,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:05:11,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 21:05:11,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:11,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:05:11,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:05:11,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:05:11,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:11,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:05:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:11,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:11,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:11,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 21:05:11,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:11,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 21:05:11,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:11,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:05:11,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:05:11,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 21:05:11,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:11,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-26 21:05:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:11,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:11,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:11,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-26 21:05:11,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:11,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 21:05:11,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:11,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:05:11,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:05:11,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:05:11,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:11,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-26 21:05:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:11,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:11,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:11,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-26 21:05:11,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:11,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 21:05:11,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:11,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:05:11,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-26 21:05:11,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:05:11,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:12,330 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 309 proven. 125 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-26 21:05:12,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492468227] [2020-10-26 21:05:12,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:05:12,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 21:05:12,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451140202] [2020-10-26 21:05:12,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:05:12,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:05:12,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:05:12,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:05:12,333 INFO L87 Difference]: Start difference. First operand 36008 states and 44256 transitions. Second operand 8 states. [2020-10-26 21:05:12,470 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:05:23,304 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:05:25,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:05:25,287 INFO L93 Difference]: Finished difference Result 81422 states and 102560 transitions. [2020-10-26 21:05:25,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 21:05:25,288 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1086 [2020-10-26 21:05:25,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:05:25,460 INFO L225 Difference]: With dead ends: 81422 [2020-10-26 21:05:25,460 INFO L226 Difference]: Without dead ends: 45420 [2020-10-26 21:05:25,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:05:25,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45420 states. [2020-10-26 21:05:26,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45420 to 45407. [2020-10-26 21:05:26,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45407 states. [2020-10-26 21:05:26,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45407 states to 45407 states and 57194 transitions. [2020-10-26 21:05:26,576 INFO L78 Accepts]: Start accepts. Automaton has 45407 states and 57194 transitions. Word has length 1086 [2020-10-26 21:05:26,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:05:26,577 INFO L481 AbstractCegarLoop]: Abstraction has 45407 states and 57194 transitions. [2020-10-26 21:05:26,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:05:26,577 INFO L276 IsEmpty]: Start isEmpty. Operand 45407 states and 57194 transitions. [2020-10-26 21:05:26,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1138 [2020-10-26 21:05:26,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:05:26,701 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:05:26,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 21:05:26,701 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:05:26,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:05:26,702 INFO L82 PathProgramCache]: Analyzing trace with hash 610928219, now seen corresponding path program 1 times [2020-10-26 21:05:26,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:05:26,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405956862] [2020-10-26 21:05:26,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:05:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:26,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:26,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:27,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:31,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:31,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1161 [2020-10-26 21:05:31,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:05:31,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-26 21:05:31,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:31,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:05:31,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-26 21:05:31,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-26 21:05:31,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:32,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:05:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:32,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:32,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:32,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:05:32,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:32,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 21:05:32,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:05:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:05:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:05:32,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:05:32,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:05:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:32,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:32,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:32,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:05:32,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:32,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 21:05:32,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:32,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:05:32,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:05:32,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:05:32,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:32,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:05:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:32,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:32,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:32,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-26 21:05:32,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:32,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-26 21:05:32,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:32,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:05:32,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:05:32,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-26 21:05:32,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 21:05:32,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-26 21:05:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:32,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:32,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:32,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-26 21:05:32,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:32,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 21:05:32,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:32,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:05:32,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:05:32,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-26 21:05:32,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:32,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-26 21:05:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:32,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:32,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:05:32,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-26 21:05:32,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:05:32,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 21:05:32,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:05:32,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:05:32,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-26 21:05:32,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:05:32,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:05:33,307 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 396 proven. 30 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-26 21:05:33,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405956862] [2020-10-26 21:05:33,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:05:33,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 21:05:33,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923240917] [2020-10-26 21:05:33,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:05:33,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:05:33,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:05:33,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:05:33,311 INFO L87 Difference]: Start difference. First operand 45407 states and 57194 transitions. Second operand 8 states. [2020-10-26 21:05:33,462 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:05:33,862 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:05:49,130 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:05:53,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:05:53,649 INFO L93 Difference]: Finished difference Result 100122 states and 128547 transitions. [2020-10-26 21:05:53,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:05:53,650 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1137 [2020-10-26 21:05:53,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:05:53,875 INFO L225 Difference]: With dead ends: 100122 [2020-10-26 21:05:53,875 INFO L226 Difference]: Without dead ends: 54721 [2020-10-26 21:05:54,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-26 21:05:54,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54721 states. [2020-10-26 21:05:55,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54721 to 52196. [2020-10-26 21:05:55,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52196 states. [2020-10-26 21:05:55,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52196 states to 52196 states and 64855 transitions. [2020-10-26 21:05:55,181 INFO L78 Accepts]: Start accepts. Automaton has 52196 states and 64855 transitions. Word has length 1137 [2020-10-26 21:05:55,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:05:55,181 INFO L481 AbstractCegarLoop]: Abstraction has 52196 states and 64855 transitions. [2020-10-26 21:05:55,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:05:55,182 INFO L276 IsEmpty]: Start isEmpty. Operand 52196 states and 64855 transitions. [2020-10-26 21:05:55,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1270 [2020-10-26 21:05:55,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:05:55,677 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:05:55,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 21:05:55,678 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:05:55,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:05:55,682 INFO L82 PathProgramCache]: Analyzing trace with hash -252168687, now seen corresponding path program 1 times [2020-10-26 21:05:55,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:05:55,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993936429] [2020-10-26 21:05:55,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:05:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:05:56,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:56,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:57,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:05:57,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:01,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:01,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1295 [2020-10-26 21:06:01,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:06:01,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5141 [2020-10-26 21:06:01,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:01,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 21:06:01,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:06:01,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 360 [2020-10-26 21:06:01,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:01,582 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:06:01,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:06:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:01,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:01,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:01,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:06:01,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:01,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 21:06:01,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:01,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:06:01,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:06:01,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:06:01,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:01,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:06:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:01,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:01,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:01,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:01,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:06:01,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:06:01,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 21:06:01,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:01,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:06:01,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:06:01,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:06:01,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:01,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:06:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:01,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:02,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:02,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-26 21:06:02,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:02,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 800 [2020-10-26 21:06:02,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:02,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:06:02,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:06:02,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 337 [2020-10-26 21:06:02,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:02,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-26 21:06:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:02,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:02,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:02,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 21:06:02,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:02,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-26 21:06:02,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:02,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 21:06:02,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:06:02,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 21:06:02,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:03,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-10-26 21:06:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:03,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:03,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:03,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-26 21:06:03,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:03,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 21:06:03,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:03,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:06:03,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-26 21:06:03,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:06:03,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:03,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-10-26 21:06:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:03,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:03,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:03,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-26 21:06:03,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:03,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 21:06:03,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:03,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:06:03,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-26 21:06:03,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:06:03,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:04,769 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 489 proven. 150 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-26 21:06:04,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993936429] [2020-10-26 21:06:04,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:06:04,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 21:06:04,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396555101] [2020-10-26 21:06:04,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:06:04,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:06:04,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:06:04,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:06:04,772 INFO L87 Difference]: Start difference. First operand 52196 states and 64855 transitions. Second operand 8 states. [2020-10-26 21:06:04,913 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 21:06:15,382 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-26 21:06:18,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:06:18,626 INFO L93 Difference]: Finished difference Result 107095 states and 133433 transitions. [2020-10-26 21:06:18,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 21:06:18,627 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1269 [2020-10-26 21:06:18,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:06:18,808 INFO L225 Difference]: With dead ends: 107095 [2020-10-26 21:06:18,808 INFO L226 Difference]: Without dead ends: 54905 [2020-10-26 21:06:18,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-26 21:06:18,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54905 states. [2020-10-26 21:06:20,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54905 to 54818. [2020-10-26 21:06:20,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54818 states. [2020-10-26 21:06:20,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54818 states to 54818 states and 67780 transitions. [2020-10-26 21:06:20,127 INFO L78 Accepts]: Start accepts. Automaton has 54818 states and 67780 transitions. Word has length 1269 [2020-10-26 21:06:20,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:06:20,128 INFO L481 AbstractCegarLoop]: Abstraction has 54818 states and 67780 transitions. [2020-10-26 21:06:20,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:06:20,128 INFO L276 IsEmpty]: Start isEmpty. Operand 54818 states and 67780 transitions. [2020-10-26 21:06:20,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1281 [2020-10-26 21:06:20,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:06:20,198 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:06:20,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 21:06:20,198 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:06:20,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:06:20,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1726517642, now seen corresponding path program 1 times [2020-10-26 21:06:20,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:06:20,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040612401] [2020-10-26 21:06:20,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:06:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:20,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:20,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:21,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:21,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking...