/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:53:49,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:53:49,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:53:49,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:53:49,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:53:49,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:53:49,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:53:49,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:53:49,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:53:49,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:53:49,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:53:49,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:53:49,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:53:49,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:53:49,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:53:49,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:53:49,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:53:49,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:53:49,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:53:49,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:53:49,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:53:49,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:53:49,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:53:49,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:53:49,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:53:49,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:53:49,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:53:49,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:53:49,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:53:49,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:53:49,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:53:49,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:53:49,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:53:49,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:53:49,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:53:49,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:53:49,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:53:49,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:53:49,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:53:49,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:53:49,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:53:49,577 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 04:53:49,602 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:53:49,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:53:49,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:53:49,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:53:49,604 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:53:49,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:53:49,605 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:53:49,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:53:49,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:53:49,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:53:49,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:53:49,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:53:49,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:53:49,606 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:53:49,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:53:49,606 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:53:49,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:53:49,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:53:49,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:53:49,607 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:53:49,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:53:49,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:53:49,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:53:49,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:53:49,608 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:53:49,608 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:53:49,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:53:49,609 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:53:49,609 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:53:49,609 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:53:49,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:53:50,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:53:50,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:53:50,014 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:53:50,014 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:53:50,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label17.c [2020-10-29 04:53:50,082 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90a0bfdcd/8f0c90a886b348de8269aaf6ad21c583/FLAGe60e951f2 [2020-10-29 04:53:50,876 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:53:50,877 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label17.c [2020-10-29 04:53:50,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90a0bfdcd/8f0c90a886b348de8269aaf6ad21c583/FLAGe60e951f2 [2020-10-29 04:53:51,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90a0bfdcd/8f0c90a886b348de8269aaf6ad21c583 [2020-10-29 04:53:51,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:53:51,033 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:53:51,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:53:51,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:53:51,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:53:51,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:53:51" (1/1) ... [2020-10-29 04:53:51,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d956b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:51, skipping insertion in model container [2020-10-29 04:53:51,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:53:51" (1/1) ... [2020-10-29 04:53:51,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:53:51,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:53:51,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:53:51,895 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:53:52,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:53:52,186 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:53:52,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:52 WrapperNode [2020-10-29 04:53:52,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:53:52,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:53:52,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:53:52,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:53:52,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:52" (1/1) ... [2020-10-29 04:53:52,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:52" (1/1) ... [2020-10-29 04:53:52,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:52" (1/1) ... [2020-10-29 04:53:52,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:52" (1/1) ... [2020-10-29 04:53:52,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:52" (1/1) ... [2020-10-29 04:53:52,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:52" (1/1) ... [2020-10-29 04:53:52,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:52" (1/1) ... [2020-10-29 04:53:52,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:53:52,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:53:52,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:53:52,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:53:52,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:53:52,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:53:52,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:53:52,494 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:53:52,494 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 04:53:52,495 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:53:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 04:53:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:53:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:53:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:53:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:53:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:53:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 04:53:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:53:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:53:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:53:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:53:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:53:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:53:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:53:54,692 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:53:54,693 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 04:53:54,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:53:54 BoogieIcfgContainer [2020-10-29 04:53:54,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:53:54,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:53:54,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:53:54,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:53:54,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:53:51" (1/3) ... [2020-10-29 04:53:54,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e644833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:53:54, skipping insertion in model container [2020-10-29 04:53:54,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:52" (2/3) ... [2020-10-29 04:53:54,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e644833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:53:54, skipping insertion in model container [2020-10-29 04:53:54,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:53:54" (3/3) ... [2020-10-29 04:53:54,704 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label17.c [2020-10-29 04:53:54,716 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:53:54,721 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:53:54,735 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:53:54,764 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:53:54,765 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:53:54,765 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:53:54,765 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:53:54,765 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:53:54,765 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:53:54,765 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:53:54,766 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:53:54,789 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 04:53:54,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-29 04:53:54,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:54,808 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] [2020-10-29 04:53:54,808 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:54,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:54,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1322723592, now seen corresponding path program 1 times [2020-10-29 04:53:54,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:54,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043109836] [2020-10-29 04:53:54,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:55,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:55,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:00,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:00,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 04:54:00,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:54:00,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4847 [2020-10-29 04:54:00,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:00,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:00,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:54:00,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:54:00,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-29 04:54:00,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:54:00,735 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:00,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:00,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:00,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:00,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:00,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:00,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 04:54:00,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:00,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:00,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:00,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:00,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:54:00,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:54:00,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:54:00,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043109836] [2020-10-29 04:54:00,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:54:00,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 04:54:00,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007055586] [2020-10-29 04:54:00,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:54:00,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:00,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:54:00,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:54:00,963 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-29 04:54:01,287 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:04,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:04,511 INFO L93 Difference]: Finished difference Result 894 states and 1553 transitions. [2020-10-29 04:54:04,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:54:04,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 206 [2020-10-29 04:54:04,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:04,533 INFO L225 Difference]: With dead ends: 894 [2020-10-29 04:54:04,533 INFO L226 Difference]: Without dead ends: 486 [2020-10-29 04:54:04,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:54:04,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-10-29 04:54:04,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 476. [2020-10-29 04:54:04,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-29 04:54:04,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 732 transitions. [2020-10-29 04:54:04,634 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 732 transitions. Word has length 206 [2020-10-29 04:54:04,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:04,636 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 732 transitions. [2020-10-29 04:54:04,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:54:04,636 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 732 transitions. [2020-10-29 04:54:04,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-29 04:54:04,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:04,644 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 04:54:04,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:54:04,644 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:04,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:04,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1049679577, now seen corresponding path program 1 times [2020-10-29 04:54:04,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:04,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186929473] [2020-10-29 04:54:04,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:04,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:04,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:06,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:07,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:07,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-29 04:54:07,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:54:07,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3227 [2020-10-29 04:54:07,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:07,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:07,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:07,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 04:54:07,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-29 04:54:07,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:54:08,299 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:08,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:08,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:08,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:08,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:08,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:08,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:54:08,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:08,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:08,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:08,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:08,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 04:54:08,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:08,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:08,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:08,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:54:08,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:08,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 04:54:08,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:08,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:08,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:08,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:08,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:54:08,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:08,596 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:54:08,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186929473] [2020-10-29 04:54:08,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:08,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:54:08,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383699442] [2020-10-29 04:54:08,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:54:08,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:08,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:54:08,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:54:08,601 INFO L87 Difference]: Start difference. First operand 476 states and 732 transitions. Second operand 5 states. [2020-10-29 04:54:08,850 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:12,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:12,033 INFO L93 Difference]: Finished difference Result 1386 states and 2153 transitions. [2020-10-29 04:54:12,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:54:12,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 218 [2020-10-29 04:54:12,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:12,047 INFO L225 Difference]: With dead ends: 1386 [2020-10-29 04:54:12,047 INFO L226 Difference]: Without dead ends: 916 [2020-10-29 04:54:12,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:54:12,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2020-10-29 04:54:12,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 911. [2020-10-29 04:54:12,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2020-10-29 04:54:12,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1309 transitions. [2020-10-29 04:54:12,128 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1309 transitions. Word has length 218 [2020-10-29 04:54:12,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:12,129 INFO L481 AbstractCegarLoop]: Abstraction has 911 states and 1309 transitions. [2020-10-29 04:54:12,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:54:12,129 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1309 transitions. [2020-10-29 04:54:12,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-29 04:54:12,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:12,135 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 04:54:12,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:54:12,136 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:12,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:12,137 INFO L82 PathProgramCache]: Analyzing trace with hash -478603293, now seen corresponding path program 1 times [2020-10-29 04:54:12,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:12,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881625307] [2020-10-29 04:54:12,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:12,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:12,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:13,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:15,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:15,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-29 04:54:15,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:54:15,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2975 [2020-10-29 04:54:15,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:15,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 04:54:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-29 04:54:15,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:16,017 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:16,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:16,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:16,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:16,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:16,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:16,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:54:16,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:16,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:16,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:16,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:16,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:16,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:16,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:16,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:16,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:16,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:54:16,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:16,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 04:54:16,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:16,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:16,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:16,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:16,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 04:54:16,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:16,669 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:54:16,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881625307] [2020-10-29 04:54:16,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:16,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:54:16,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232315859] [2020-10-29 04:54:16,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:54:16,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:16,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:54:16,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:54:16,675 INFO L87 Difference]: Start difference. First operand 911 states and 1309 transitions. Second operand 5 states. [2020-10-29 04:54:17,295 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-29 04:54:20,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:20,230 INFO L93 Difference]: Finished difference Result 1993 states and 2943 transitions. [2020-10-29 04:54:20,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:54:20,231 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-29 04:54:20,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:20,240 INFO L225 Difference]: With dead ends: 1993 [2020-10-29 04:54:20,240 INFO L226 Difference]: Without dead ends: 979 [2020-10-29 04:54:20,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:54:20,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2020-10-29 04:54:20,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 975. [2020-10-29 04:54:20,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 975 states. [2020-10-29 04:54:20,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1380 transitions. [2020-10-29 04:54:20,310 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1380 transitions. Word has length 220 [2020-10-29 04:54:20,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:20,310 INFO L481 AbstractCegarLoop]: Abstraction has 975 states and 1380 transitions. [2020-10-29 04:54:20,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:54:20,311 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1380 transitions. [2020-10-29 04:54:20,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-29 04:54:20,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:20,316 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 04:54:20,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:54:20,318 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:20,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:20,318 INFO L82 PathProgramCache]: Analyzing trace with hash -855660897, now seen corresponding path program 1 times [2020-10-29 04:54:20,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:20,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954430734] [2020-10-29 04:54:20,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:20,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:20,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:22,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:22,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:22,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-29 04:54:22,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:54:22,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2363 [2020-10-29 04:54:22,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:22,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:22,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:22,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 04:54:22,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-29 04:54:22,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:54:23,106 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:23,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:23,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:23,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:23,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:23,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:23,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:54:23,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:23,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:23,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:23,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:23,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:23,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:54:23,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:23,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:23,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:23,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 04:54:23,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:23,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 04:54:23,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:23,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:23,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:23,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:23,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:54:23,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:23,351 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:54:23,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954430734] [2020-10-29 04:54:23,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:23,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:54:23,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505589777] [2020-10-29 04:54:23,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:54:23,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:23,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:54:23,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:54:23,354 INFO L87 Difference]: Start difference. First operand 975 states and 1380 transitions. Second operand 5 states. [2020-10-29 04:54:23,593 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:26,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:26,470 INFO L93 Difference]: Finished difference Result 2799 states and 4057 transitions. [2020-10-29 04:54:26,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:54:26,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-29 04:54:26,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:26,481 INFO L225 Difference]: With dead ends: 2799 [2020-10-29 04:54:26,481 INFO L226 Difference]: Without dead ends: 1830 [2020-10-29 04:54:26,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:54:26,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2020-10-29 04:54:26,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1823. [2020-10-29 04:54:26,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1823 states. [2020-10-29 04:54:26,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 2520 transitions. [2020-10-29 04:54:26,549 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 2520 transitions. Word has length 222 [2020-10-29 04:54:26,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:26,550 INFO L481 AbstractCegarLoop]: Abstraction has 1823 states and 2520 transitions. [2020-10-29 04:54:26,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:54:26,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 2520 transitions. [2020-10-29 04:54:26,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-29 04:54:26,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:26,558 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:54:26,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:54:26,559 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:26,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:26,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1506971973, now seen corresponding path program 1 times [2020-10-29 04:54:26,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:26,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256202982] [2020-10-29 04:54:26,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:26,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:26,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:28,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:31,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:31,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-29 04:54:31,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:54:31,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:54:31,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:31,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:31,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:31,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-29 04:54:31,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-29 04:54:31,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:31,932 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:31,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:31,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:31,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:31,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:31,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:31,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:54:31,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:31,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:31,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:31,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:31,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:31,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:32,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:32,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:32,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:32,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:54:32,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:32,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:54:32,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:32,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:32,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:32,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:32,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:32,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:54:32,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:54:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:32,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:32,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:32,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 04:54:32,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:32,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 04:54:32,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:32,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:32,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:32,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:32,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 04:54:32,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:32,185 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 04:54:32,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256202982] [2020-10-29 04:54:32,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:32,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:54:32,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024053751] [2020-10-29 04:54:32,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:54:32,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:32,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:54:32,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:54:32,187 INFO L87 Difference]: Start difference. First operand 1823 states and 2520 transitions. Second operand 5 states. [2020-10-29 04:54:32,538 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:35,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:35,728 INFO L93 Difference]: Finished difference Result 5319 states and 7534 transitions. [2020-10-29 04:54:35,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:54:35,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 248 [2020-10-29 04:54:35,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:35,756 INFO L225 Difference]: With dead ends: 5319 [2020-10-29 04:54:35,756 INFO L226 Difference]: Without dead ends: 3502 [2020-10-29 04:54:35,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:54:35,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3502 states. [2020-10-29 04:54:35,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3502 to 3495. [2020-10-29 04:54:35,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3495 states. [2020-10-29 04:54:35,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3495 states to 3495 states and 4823 transitions. [2020-10-29 04:54:35,881 INFO L78 Accepts]: Start accepts. Automaton has 3495 states and 4823 transitions. Word has length 248 [2020-10-29 04:54:35,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:35,881 INFO L481 AbstractCegarLoop]: Abstraction has 3495 states and 4823 transitions. [2020-10-29 04:54:35,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:54:35,881 INFO L276 IsEmpty]: Start isEmpty. Operand 3495 states and 4823 transitions. [2020-10-29 04:54:35,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-29 04:54:35,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:35,895 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:54:35,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:54:35,895 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:35,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:35,896 INFO L82 PathProgramCache]: Analyzing trace with hash 203099763, now seen corresponding path program 1 times [2020-10-29 04:54:35,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:35,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794653446] [2020-10-29 04:54:35,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:35,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:36,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:37,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:40,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:40,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:40,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-29 04:54:40,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:54:40,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 04:54:40,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:40,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:40,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:54:40,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 04:54:40,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-29 04:54:40,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:41,355 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:41,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:41,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:41,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:41,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:41,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:41,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:54:41,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:41,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:41,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:41,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:41,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:41,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:41,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:41,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:41,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:41,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:54:41,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:41,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 04:54:41,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:41,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:41,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:41,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:41,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:54:41,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:41,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:54:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:41,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:41,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:41,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:54:41,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:41,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 04:54:41,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:41,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:41,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:41,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:41,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 04:54:41,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:41,721 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 31 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 04:54:41,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794653446] [2020-10-29 04:54:41,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:41,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:54:41,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061150795] [2020-10-29 04:54:41,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:54:41,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:41,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:54:41,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:54:41,724 INFO L87 Difference]: Start difference. First operand 3495 states and 4823 transitions. Second operand 6 states. [2020-10-29 04:54:41,982 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:45,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:45,208 INFO L93 Difference]: Finished difference Result 10292 states and 15028 transitions. [2020-10-29 04:54:45,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:54:45,210 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 252 [2020-10-29 04:54:45,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:45,261 INFO L225 Difference]: With dead ends: 10292 [2020-10-29 04:54:45,261 INFO L226 Difference]: Without dead ends: 6803 [2020-10-29 04:54:45,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:54:45,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6803 states. [2020-10-29 04:54:45,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6803 to 6727. [2020-10-29 04:54:45,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6727 states. [2020-10-29 04:54:45,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6727 states to 6727 states and 9554 transitions. [2020-10-29 04:54:45,519 INFO L78 Accepts]: Start accepts. Automaton has 6727 states and 9554 transitions. Word has length 252 [2020-10-29 04:54:45,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:45,519 INFO L481 AbstractCegarLoop]: Abstraction has 6727 states and 9554 transitions. [2020-10-29 04:54:45,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:54:45,519 INFO L276 IsEmpty]: Start isEmpty. Operand 6727 states and 9554 transitions. [2020-10-29 04:54:45,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-29 04:54:45,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:45,545 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:54:45,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:54:45,546 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:45,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:45,546 INFO L82 PathProgramCache]: Analyzing trace with hash -257685494, now seen corresponding path program 1 times [2020-10-29 04:54:45,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:45,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240532130] [2020-10-29 04:54:45,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:45,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:45,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:46,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:50,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:50,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-29 04:54:50,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:54:50,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 04:54:50,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:50,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:50,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 04:54:50,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 04:54:50,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-29 04:54:50,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:54:51,041 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:51,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:51,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:51,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:51,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:51,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:51,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:54:51,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:51,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:51,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:51,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:51,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:51,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:51,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:51,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:51,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:51,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:54:51,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:51,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 04:54:51,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:51,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 04:54:51,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:51,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 04:54:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:51,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:51,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:51,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:54:51,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:51,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 04:54:51,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:51,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:51,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:51,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:51,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:54:51,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:51,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:54:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:51,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:51,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:51,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:54:51,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:51,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 04:54:51,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:51,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:54:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:54:51,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 27 proven. 50 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 04:54:52,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240532130] [2020-10-29 04:54:52,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:52,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:54:52,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766951159] [2020-10-29 04:54:52,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:54:52,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:52,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:54:52,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:54:52,059 INFO L87 Difference]: Start difference. First operand 6727 states and 9554 transitions. Second operand 9 states. [2020-10-29 04:54:52,862 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 165 [2020-10-29 04:54:53,144 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 04:54:55,147 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 170 [2020-10-29 04:55:01,687 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 169 [2020-10-29 04:55:02,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:02,364 INFO L93 Difference]: Finished difference Result 16985 states and 27103 transitions. [2020-10-29 04:55:02,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 04:55:02,365 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 263 [2020-10-29 04:55:02,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:02,445 INFO L225 Difference]: With dead ends: 16985 [2020-10-29 04:55:02,445 INFO L226 Difference]: Without dead ends: 10152 [2020-10-29 04:55:02,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2020-10-29 04:55:02,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10152 states. [2020-10-29 04:55:02,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10152 to 9653. [2020-10-29 04:55:02,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9653 states. [2020-10-29 04:55:02,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9653 states to 9653 states and 14391 transitions. [2020-10-29 04:55:02,859 INFO L78 Accepts]: Start accepts. Automaton has 9653 states and 14391 transitions. Word has length 263 [2020-10-29 04:55:02,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:02,859 INFO L481 AbstractCegarLoop]: Abstraction has 9653 states and 14391 transitions. [2020-10-29 04:55:02,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:55:02,859 INFO L276 IsEmpty]: Start isEmpty. Operand 9653 states and 14391 transitions. [2020-10-29 04:55:02,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-29 04:55:02,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:02,912 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:02,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:55:02,912 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:02,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:02,913 INFO L82 PathProgramCache]: Analyzing trace with hash -426187152, now seen corresponding path program 1 times [2020-10-29 04:55:02,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:02,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604217759] [2020-10-29 04:55:02,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:03,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:03,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:03,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:04,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:08,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:08,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-29 04:55:08,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:55:08,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 04:55:08,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:08,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:08,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:08,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-29 04:55:08,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-29 04:55:08,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:08,306 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:08,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:08,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:08,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:08,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:08,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:08,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:55:08,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:08,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:08,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:08,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:08,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:08,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:08,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:55:08,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:08,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:55:08,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:08,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:08,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:08,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:08,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:08,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:08,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:55:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:08,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:08,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:08,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:55:08,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:08,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 04:55:08,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:08,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:08,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:08,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:08,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:08,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:08,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 04:55:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:08,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:08,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:08,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:55:08,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:08,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 04:55:08,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:08,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:08,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:08,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:08,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:55:08,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:08,590 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 60 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-29 04:55:08,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604217759] [2020-10-29 04:55:08,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:08,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:55:08,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160614410] [2020-10-29 04:55:08,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:55:08,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:08,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:55:08,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:55:08,593 INFO L87 Difference]: Start difference. First operand 9653 states and 14391 transitions. Second operand 5 states. [2020-10-29 04:55:08,836 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:55:11,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:11,701 INFO L93 Difference]: Finished difference Result 22534 states and 34603 transitions. [2020-10-29 04:55:11,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:55:11,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 272 [2020-10-29 04:55:11,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:11,772 INFO L225 Difference]: With dead ends: 22534 [2020-10-29 04:55:11,772 INFO L226 Difference]: Without dead ends: 12887 [2020-10-29 04:55:11,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:55:11,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12887 states. [2020-10-29 04:55:12,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12887 to 12876. [2020-10-29 04:55:12,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12876 states. [2020-10-29 04:55:12,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12876 states to 12876 states and 19328 transitions. [2020-10-29 04:55:12,276 INFO L78 Accepts]: Start accepts. Automaton has 12876 states and 19328 transitions. Word has length 272 [2020-10-29 04:55:12,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:12,277 INFO L481 AbstractCegarLoop]: Abstraction has 12876 states and 19328 transitions. [2020-10-29 04:55:12,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:55:12,277 INFO L276 IsEmpty]: Start isEmpty. Operand 12876 states and 19328 transitions. [2020-10-29 04:55:12,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-29 04:55:12,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:12,353 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 04:55:12,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:55:12,354 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:12,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:12,354 INFO L82 PathProgramCache]: Analyzing trace with hash -2098245188, now seen corresponding path program 1 times [2020-10-29 04:55:12,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:12,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988561022] [2020-10-29 04:55:12,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:12,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:12,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:13,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:14,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:17,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:17,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-29 04:55:17,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:55:17,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 04:55:17,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:17,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:17,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:55:17,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-29 04:55:17,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-29 04:55:17,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:17,800 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:17,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:17,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:17,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:17,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:17,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:17,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:55:17,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:17,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:17,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:17,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:17,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:17,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:17,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:17,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:17,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:17,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:55:17,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:17,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 04:55:17,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:17,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:17,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:17,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:17,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:17,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:17,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:55:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:17,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:17,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:17,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:55:17,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:17,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 04:55:17,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:17,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:17,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:17,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:17,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:55:17,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:17,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:55:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:17,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:18,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:18,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:55:18,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:18,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 04:55:18,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:18,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:18,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:18,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:18,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 04:55:18,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:18,218 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 66 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-29 04:55:18,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988561022] [2020-10-29 04:55:18,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:18,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:55:18,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99919887] [2020-10-29 04:55:18,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:55:18,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:18,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:55:18,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:55:18,221 INFO L87 Difference]: Start difference. First operand 12876 states and 19328 transitions. Second operand 6 states. [2020-10-29 04:55:18,468 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:21,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:21,852 INFO L93 Difference]: Finished difference Result 35523 states and 56056 transitions. [2020-10-29 04:55:21,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:55:21,852 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 278 [2020-10-29 04:55:21,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:21,981 INFO L225 Difference]: With dead ends: 35523 [2020-10-29 04:55:21,982 INFO L226 Difference]: Without dead ends: 22653 [2020-10-29 04:55:22,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:55:22,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22653 states. [2020-10-29 04:55:22,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22653 to 22336. [2020-10-29 04:55:22,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22336 states. [2020-10-29 04:55:22,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22336 states to 22336 states and 34349 transitions. [2020-10-29 04:55:22,891 INFO L78 Accepts]: Start accepts. Automaton has 22336 states and 34349 transitions. Word has length 278 [2020-10-29 04:55:22,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:22,892 INFO L481 AbstractCegarLoop]: Abstraction has 22336 states and 34349 transitions. [2020-10-29 04:55:22,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:55:22,892 INFO L276 IsEmpty]: Start isEmpty. Operand 22336 states and 34349 transitions. [2020-10-29 04:55:22,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-29 04:55:22,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:22,998 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-29 04:55:22,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:55:22,998 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:22,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:22,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1026262436, now seen corresponding path program 1 times [2020-10-29 04:55:22,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:22,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92054873] [2020-10-29 04:55:22,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:23,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:23,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:25,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:27,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:28,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:28,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-29 04:55:28,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:55:28,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 04:55:28,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:28,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:28,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:55:28,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:55:28,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 293 [2020-10-29 04:55:28,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:28,456 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:28,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:28,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:28,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:28,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:28,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:28,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:55:28,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:28,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:28,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:55:28,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:28,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:28,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:28,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:28,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:55:28,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:28,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 04:55:28,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:28,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:28,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:28,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:28,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:55:28,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:28,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 04:55:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:28,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:28,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:28,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 04:55:28,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:28,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 04:55:28,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:28,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:28,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:55:28,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:28,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 04:55:28,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:28,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:55:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:28,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:28,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:28,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:55:28,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:28,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 04:55:28,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:28,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:28,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:28,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:28,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 04:55:28,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:29,112 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 04:55:29,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92054873] [2020-10-29 04:55:29,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:29,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:55:29,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184285402] [2020-10-29 04:55:29,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:55:29,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:29,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:55:29,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:55:29,114 INFO L87 Difference]: Start difference. First operand 22336 states and 34349 transitions. Second operand 10 states. [2020-10-29 04:55:29,381 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:55:29,737 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:31,111 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:36,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:36,700 INFO L93 Difference]: Finished difference Result 68572 states and 123097 transitions. [2020-10-29 04:55:36,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 04:55:36,701 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 286 [2020-10-29 04:55:36,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:37,157 INFO L225 Difference]: With dead ends: 68572 [2020-10-29 04:55:37,157 INFO L226 Difference]: Without dead ends: 46242 [2020-10-29 04:55:37,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2020-10-29 04:55:37,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46242 states. [2020-10-29 04:55:39,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46242 to 44596. [2020-10-29 04:55:39,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44596 states. [2020-10-29 04:55:39,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44596 states to 44596 states and 69648 transitions. [2020-10-29 04:55:39,968 INFO L78 Accepts]: Start accepts. Automaton has 44596 states and 69648 transitions. Word has length 286 [2020-10-29 04:55:39,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:39,969 INFO L481 AbstractCegarLoop]: Abstraction has 44596 states and 69648 transitions. [2020-10-29 04:55:39,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:55:39,969 INFO L276 IsEmpty]: Start isEmpty. Operand 44596 states and 69648 transitions. [2020-10-29 04:55:40,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-29 04:55:40,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:40,231 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:40,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:55:40,232 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:40,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:40,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1441355563, now seen corresponding path program 1 times [2020-10-29 04:55:40,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:40,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487886632] [2020-10-29 04:55:40,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:40,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:40,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:40,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:41,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:43,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:45,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:45,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-29 04:55:45,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:55:45,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 04:55:45,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:45,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:55:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 04:55:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 04:55:45,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:45,599 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:45,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:45,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:45,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:45,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:45,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:45,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:55:45,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:45,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:45,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:45,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:45,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:45,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:45,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:45,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:45,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:45,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:55:45,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:45,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 04:55:45,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:45,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:45,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:45,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:45,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 04:55:45,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:45,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:55:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:45,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:45,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:45,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:45,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 04:55:45,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:55:45,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-29 04:55:45,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:45,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:45,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:45,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:45,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 04:55:45,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:45,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 04:55:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:45,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:45,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:45,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 04:55:45,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:45,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 04:55:45,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:45,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 04:55:45,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:46,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 04:55:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:46,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:46,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:46,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:55:46,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:46,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 04:55:46,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:46,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:46,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:46,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 04:55:46,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:46,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 161 proven. 30 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-29 04:55:46,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487886632] [2020-10-29 04:55:46,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:46,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:55:46,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218834422] [2020-10-29 04:55:46,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:55:46,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:46,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:55:46,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:55:46,195 INFO L87 Difference]: Start difference. First operand 44596 states and 69648 transitions. Second operand 8 states. [2020-10-29 04:55:46,444 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:55:46,826 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:47,767 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:55:52,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:52,406 INFO L93 Difference]: Finished difference Result 105142 states and 176094 transitions. [2020-10-29 04:55:52,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:55:52,407 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 331 [2020-10-29 04:55:52,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:52,907 INFO L225 Difference]: With dead ends: 105142 [2020-10-29 04:55:52,907 INFO L226 Difference]: Without dead ends: 60552 [2020-10-29 04:55:52,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:55:53,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60552 states. [2020-10-29 04:55:55,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60552 to 59063. [2020-10-29 04:55:55,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59063 states. [2020-10-29 04:55:55,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59063 states to 59063 states and 82070 transitions. [2020-10-29 04:55:55,623 INFO L78 Accepts]: Start accepts. Automaton has 59063 states and 82070 transitions. Word has length 331 [2020-10-29 04:55:55,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:55,623 INFO L481 AbstractCegarLoop]: Abstraction has 59063 states and 82070 transitions. [2020-10-29 04:55:55,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:55:55,624 INFO L276 IsEmpty]: Start isEmpty. Operand 59063 states and 82070 transitions. [2020-10-29 04:55:55,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-29 04:55:55,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:55,837 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 04:55:55,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:55:55,837 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:55,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:55,838 INFO L82 PathProgramCache]: Analyzing trace with hash -35788506, now seen corresponding path program 1 times [2020-10-29 04:55:55,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:55,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439246471] [2020-10-29 04:55:55,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:55,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:56,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:56,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:00,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:00,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-29 04:56:00,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:56:00,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 04:56:00,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:00,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:00,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:00,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-29 04:56:00,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 04:56:00,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:01,199 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:01,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:01,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:01,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:01,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:01,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:01,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:56:01,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:01,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:01,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:01,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:01,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:01,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:01,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:01,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:01,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:01,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:56:01,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:01,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:56:01,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:01,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:01,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:01,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:01,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:01,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:01,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:56:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:01,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:01,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:01,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:56:01,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:01,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 04:56:01,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:01,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:01,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:01,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:01,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:56:01,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:01,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 04:56:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:01,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:01,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:01,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 04:56:01,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:01,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 04:56:01,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:01,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:01,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:01,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:01,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 04:56:01,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:01,736 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 04:56:01,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439246471] [2020-10-29 04:56:01,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:01,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:56:01,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51838489] [2020-10-29 04:56:01,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:56:01,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:01,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:56:01,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:56:01,738 INFO L87 Difference]: Start difference. First operand 59063 states and 82070 transitions. Second operand 7 states. [2020-10-29 04:56:02,260 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:56:03,398 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 04:56:09,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:09,339 INFO L93 Difference]: Finished difference Result 131694 states and 197655 transitions. [2020-10-29 04:56:09,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:56:09,340 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 333 [2020-10-29 04:56:09,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:09,951 INFO L225 Difference]: With dead ends: 131694 [2020-10-29 04:56:09,951 INFO L226 Difference]: Without dead ends: 73621 [2020-10-29 04:56:10,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:56:10,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73621 states. [2020-10-29 04:56:12,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73621 to 71732. [2020-10-29 04:56:12,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71732 states. [2020-10-29 04:56:12,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71732 states to 71732 states and 98518 transitions. [2020-10-29 04:56:12,961 INFO L78 Accepts]: Start accepts. Automaton has 71732 states and 98518 transitions. Word has length 333 [2020-10-29 04:56:12,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:12,962 INFO L481 AbstractCegarLoop]: Abstraction has 71732 states and 98518 transitions. [2020-10-29 04:56:12,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:56:12,962 INFO L276 IsEmpty]: Start isEmpty. Operand 71732 states and 98518 transitions. [2020-10-29 04:56:13,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-29 04:56:13,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:13,120 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:13,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:56:13,121 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:13,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:13,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1505767528, now seen corresponding path program 1 times [2020-10-29 04:56:13,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:13,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027639753] [2020-10-29 04:56:13,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:13,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:13,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:14,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:16,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:16,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-29 04:56:16,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:56:16,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3757 [2020-10-29 04:56:16,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:16,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:16,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:16,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 04:56:16,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 04:56:16,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:17,207 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:17,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:17,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:17,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:17,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:17,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:17,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:56:17,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:17,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:17,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:17,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:17,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:17,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:17,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:17,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:17,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:17,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:56:17,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:17,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 04:56:17,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:17,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:17,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:17,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:17,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 04:56:17,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:17,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:56:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:17,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:17,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:17,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 04:56:17,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:17,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-29 04:56:17,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:17,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:17,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:17,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:17,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 04:56:17,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:17,745 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:56:17,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027639753] [2020-10-29 04:56:17,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:17,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:56:17,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231873206] [2020-10-29 04:56:17,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:56:17,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:17,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:56:17,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:56:17,748 INFO L87 Difference]: Start difference. First operand 71732 states and 98518 transitions. Second operand 7 states. [2020-10-29 04:56:17,988 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:23,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:23,373 INFO L93 Difference]: Finished difference Result 178164 states and 261218 transitions. [2020-10-29 04:56:23,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 04:56:23,373 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 335 [2020-10-29 04:56:23,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:24,065 INFO L225 Difference]: With dead ends: 178164 [2020-10-29 04:56:24,065 INFO L226 Difference]: Without dead ends: 117503 [2020-10-29 04:56:24,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:56:24,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117503 states. [2020-10-29 04:56:27,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117503 to 115688. [2020-10-29 04:56:27,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115688 states. [2020-10-29 04:56:27,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115688 states to 115688 states and 161062 transitions. [2020-10-29 04:56:27,954 INFO L78 Accepts]: Start accepts. Automaton has 115688 states and 161062 transitions. Word has length 335 [2020-10-29 04:56:27,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:27,954 INFO L481 AbstractCegarLoop]: Abstraction has 115688 states and 161062 transitions. [2020-10-29 04:56:27,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:56:27,954 INFO L276 IsEmpty]: Start isEmpty. Operand 115688 states and 161062 transitions. [2020-10-29 04:56:28,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-29 04:56:28,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:28,198 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 04:56:28,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 04:56:28,198 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:28,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:28,199 INFO L82 PathProgramCache]: Analyzing trace with hash 812667866, now seen corresponding path program 1 times [2020-10-29 04:56:28,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:28,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785995322] [2020-10-29 04:56:28,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:28,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:28,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:29,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:30,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:31,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:33,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:33,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-29 04:56:33,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:56:33,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 04:56:33,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:33,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:56:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:56:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 346 [2020-10-29 04:56:33,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:33,625 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:33,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:33,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:33,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:33,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:33,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:33,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:56:33,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:33,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:56:33,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:33,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:33,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:33,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:33,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:56:33,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:33,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 04:56:33,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:33,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:33,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:33,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:33,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 04:56:33,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:33,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:56:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:33,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:33,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:33,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:56:33,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:33,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 04:56:33,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:33,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:33,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:56:33,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:33,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 04:56:33,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:34,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 04:56:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:34,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:34,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:34,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:34,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 04:56:34,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:56:34,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-29 04:56:34,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:34,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:34,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:34,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:34,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 04:56:34,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:34,386 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 87 proven. 103 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 04:56:34,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785995322] [2020-10-29 04:56:34,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:34,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:56:34,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054737410] [2020-10-29 04:56:34,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:56:34,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:34,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:56:34,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:56:34,388 INFO L87 Difference]: Start difference. First operand 115688 states and 161062 transitions. Second operand 9 states. [2020-10-29 04:56:34,675 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 04:56:35,043 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:36,530 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:56:44,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:44,099 INFO L93 Difference]: Finished difference Result 249690 states and 364358 transitions. [2020-10-29 04:56:44,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:56:44,100 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 339 [2020-10-29 04:56:44,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:44,748 INFO L225 Difference]: With dead ends: 249690 [2020-10-29 04:56:44,748 INFO L226 Difference]: Without dead ends: 135472 [2020-10-29 04:56:45,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:56:45,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135472 states. [2020-10-29 04:56:48,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135472 to 133436. [2020-10-29 04:56:48,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133436 states. [2020-10-29 04:56:49,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133436 states to 133436 states and 183669 transitions. [2020-10-29 04:56:49,166 INFO L78 Accepts]: Start accepts. Automaton has 133436 states and 183669 transitions. Word has length 339 [2020-10-29 04:56:49,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:49,167 INFO L481 AbstractCegarLoop]: Abstraction has 133436 states and 183669 transitions. [2020-10-29 04:56:49,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:56:49,167 INFO L276 IsEmpty]: Start isEmpty. Operand 133436 states and 183669 transitions. [2020-10-29 04:56:49,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-29 04:56:49,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:49,465 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-29 04:56:49,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 04:56:49,465 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:49,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:49,466 INFO L82 PathProgramCache]: Analyzing trace with hash 693314428, now seen corresponding path program 1 times [2020-10-29 04:56:49,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:49,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640674772] [2020-10-29 04:56:49,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:49,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:49,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:49,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:50,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:50,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:50,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:51,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:54,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:54,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-29 04:56:54,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 04:56:54,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 04:56:54,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:54,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:54,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:56:54,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-29 04:56:54,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 04:56:54,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:54,852 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:54,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:54,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:54,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:54,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:54,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:54,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:56:54,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:54,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:54,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:54,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:54,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:54,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:54,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:54,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:54,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:54,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:56:54,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:54,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:56:54,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:54,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:54,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:54,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:54,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:54,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:54,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:56:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:54,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:55,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:55,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 04:56:55,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:55,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 04:56:55,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:55,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:55,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:55,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:55,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:55,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:55,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 04:56:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:55,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:55,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:55,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:56:55,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:55,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 04:56:55,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:55,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:55,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:55,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:55,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 04:56:55,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:55,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-29 04:56:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:55,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:55,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:55,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:56:55,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:55,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 04:56:55,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:55,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:55,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:55,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:55,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 04:56:55,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:55,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 04:56:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:55,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:55,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:55,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:56:55,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:55,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 04:56:55,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:55,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:55,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:55,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:55,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 04:56:55,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:55,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 04:56:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:55,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:55,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:55,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:56:55,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:55,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 04:56:55,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:55,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:55,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:55,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 04:56:55,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:55,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:55,432 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 261 proven. 41 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-10-29 04:56:55,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640674772] [2020-10-29 04:56:55,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:55,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:56:55,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319834144] [2020-10-29 04:56:55,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:56:55,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:55,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:56:55,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:56:55,434 INFO L87 Difference]: Start difference. First operand 133436 states and 183669 transitions. Second operand 8 states. [2020-10-29 04:56:55,954 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:56,585 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:57:04,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:04,548 INFO L93 Difference]: Finished difference Result 263083 states and 425140 transitions. [2020-10-29 04:57:04,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:57:04,549 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 371 [2020-10-29 04:57:04,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:05,869 INFO L225 Difference]: With dead ends: 263083 [2020-10-29 04:57:05,869 INFO L226 Difference]: Without dead ends: 140773 [2020-10-29 04:57:06,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:57:06,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140773 states. [2020-10-29 04:57:10,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140773 to 133501. [2020-10-29 04:57:10,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133501 states.