/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=DEEPEST --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/array-cav19/array_init_pair_symmetr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 13:59:48,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 13:59:48,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 13:59:48,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 13:59:48,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 13:59:48,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 13:59:48,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 13:59:48,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 13:59:48,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 13:59:48,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 13:59:48,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 13:59:48,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 13:59:48,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 13:59:48,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 13:59:48,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 13:59:48,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 13:59:48,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 13:59:48,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 13:59:48,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 13:59:48,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 13:59:48,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 13:59:48,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 13:59:48,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 13:59:48,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 13:59:48,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 13:59:48,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 13:59:48,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 13:59:48,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 13:59:48,518 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 13:59:48,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 13:59:48,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 13:59:48,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 13:59:48,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 13:59:48,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 13:59:48,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 13:59:48,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 13:59:48,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 13:59:48,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 13:59:48,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 13:59:48,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 13:59:48,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 13:59:48,537 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 13:59:48,587 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 13:59:48,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 13:59:48,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 13:59:48,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 13:59:48,592 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 13:59:48,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 13:59:48,592 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 13:59:48,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 13:59:48,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 13:59:48,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 13:59:48,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 13:59:48,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 13:59:48,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 13:59:48,595 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 13:59:48,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 13:59:48,595 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 13:59:48,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 13:59:48,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 13:59:48,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 13:59:48,596 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 13:59:48,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 13:59:48,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 13:59:48,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 13:59:48,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 13:59:48,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 13:59:48,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 13:59:48,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 13:59:48,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 13:59:48,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 13:59:48,598 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 13:59:49,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 13:59:49,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 13:59:49,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 13:59:49,082 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 13:59:49,083 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 13:59:49,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_init_pair_symmetr.c [2020-10-27 13:59:49,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/090c29593/64e9dc2a46764e36971a13be9d4bf605/FLAGf46216710 [2020-10-27 13:59:49,884 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 13:59:49,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-cav19/array_init_pair_symmetr.c [2020-10-27 13:59:49,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/090c29593/64e9dc2a46764e36971a13be9d4bf605/FLAGf46216710 [2020-10-27 13:59:50,259 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/090c29593/64e9dc2a46764e36971a13be9d4bf605 [2020-10-27 13:59:50,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 13:59:50,271 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 13:59:50,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 13:59:50,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 13:59:50,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 13:59:50,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:59:50" (1/1) ... [2020-10-27 13:59:50,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51464909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:50, skipping insertion in model container [2020-10-27 13:59:50,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:59:50" (1/1) ... [2020-10-27 13:59:50,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 13:59:50,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 13:59:50,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 13:59:50,567 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 13:59:50,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 13:59:50,636 INFO L208 MainTranslator]: Completed translation [2020-10-27 13:59:50,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:50 WrapperNode [2020-10-27 13:59:50,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 13:59:50,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 13:59:50,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 13:59:50,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 13:59:50,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:50" (1/1) ... [2020-10-27 13:59:50,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:50" (1/1) ... [2020-10-27 13:59:50,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:50" (1/1) ... [2020-10-27 13:59:50,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:50" (1/1) ... [2020-10-27 13:59:50,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:50" (1/1) ... [2020-10-27 13:59:50,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:50" (1/1) ... [2020-10-27 13:59:50,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:50" (1/1) ... [2020-10-27 13:59:50,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 13:59:50,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 13:59:50,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 13:59:50,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 13:59:50,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 13:59:50,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 13:59:50,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 13:59:50,823 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 13:59:50,823 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 13:59:50,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 13:59:50,823 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 13:59:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 13:59:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 13:59:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 13:59:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 13:59:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 13:59:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 13:59:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 13:59:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 13:59:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 13:59:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 13:59:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 13:59:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 13:59:50,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 13:59:50,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 13:59:51,499 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 13:59:51,499 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 13:59:51,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:59:51 BoogieIcfgContainer [2020-10-27 13:59:51,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 13:59:51,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 13:59:51,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 13:59:51,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 13:59:51,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:59:50" (1/3) ... [2020-10-27 13:59:51,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d365821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:59:51, skipping insertion in model container [2020-10-27 13:59:51,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:50" (2/3) ... [2020-10-27 13:59:51,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d365821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:59:51, skipping insertion in model container [2020-10-27 13:59:51,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:59:51" (3/3) ... [2020-10-27 13:59:51,514 INFO L111 eAbstractionObserver]: Analyzing ICFG array_init_pair_symmetr.c [2020-10-27 13:59:51,528 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 13:59:51,534 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 13:59:51,549 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 13:59:51,594 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 13:59:51,594 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 13:59:51,594 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 13:59:51,594 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 13:59:51,595 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 13:59:51,595 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 13:59:51,595 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 13:59:51,595 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 13:59:51,616 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-27 13:59:51,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 13:59:51,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 13:59:51,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 13:59:51,628 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 13:59:51,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 13:59:51,637 INFO L82 PathProgramCache]: Analyzing trace with hash 19677593, now seen corresponding path program 1 times [2020-10-27 13:59:51,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 13:59:51,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138749494] [2020-10-27 13:59:51,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 13:59:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:59:51,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:51,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:52,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:52,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:52,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:59:52,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 13:59:52,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 13:59:52,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 714 [2020-10-27 13:59:52,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 13:59:52,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 13:59:52,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 13:59:52,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 13:59:52,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 13:59:52,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 13:59:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:59:52,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:52,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:59:52,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 13:59:52,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:59:52,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 13:59:52,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 13:59:52,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:59:52,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:59:52,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:59:52,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:59:52,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 13:59:52,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138749494] [2020-10-27 13:59:52,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 13:59:52,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 13:59:52,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764345464] [2020-10-27 13:59:52,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 13:59:52,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 13:59:52,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 13:59:52,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 13:59:52,690 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 6 states. [2020-10-27 13:59:52,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 13:59:52,983 INFO L93 Difference]: Finished difference Result 83 states and 111 transitions. [2020-10-27 13:59:52,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 13:59:52,985 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-27 13:59:52,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 13:59:52,994 INFO L225 Difference]: With dead ends: 83 [2020-10-27 13:59:52,995 INFO L226 Difference]: Without dead ends: 35 [2020-10-27 13:59:52,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 13:59:53,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-27 13:59:53,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-10-27 13:59:53,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 13:59:53,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-10-27 13:59:53,049 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 16 [2020-10-27 13:59:53,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 13:59:53,050 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-10-27 13:59:53,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 13:59:53,050 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-10-27 13:59:53,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 13:59:53,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 13:59:53,052 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] [2020-10-27 13:59:53,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 13:59:53,052 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 13:59:53,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 13:59:53,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1816449956, now seen corresponding path program 1 times [2020-10-27 13:59:53,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 13:59:53,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363494981] [2020-10-27 13:59:53,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 13:59:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:59:53,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:53,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:53,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:53,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:54,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:59:54,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 13:59:54,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 13:59:54,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-10-27 13:59:54,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 13:59:54,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 13:59:54,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 13:59:54,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 13:59:54,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 13:59:54,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 13:59:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:59:54,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:54,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:59:54,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 13:59:54,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:59:54,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 13:59:54,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 13:59:54,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:59:54,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:59:54,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:59:54,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:59:54,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 13:59:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:59:54,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:54,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:59:54,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 13:59:54,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:59:54,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 13:59:54,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 13:59:54,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:59:54,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:59:54,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:59:54,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 13:59:54,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 13:59:54,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363494981] [2020-10-27 13:59:54,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 13:59:54,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 13:59:54,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087503707] [2020-10-27 13:59:54,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 13:59:54,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 13:59:54,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 13:59:54,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 13:59:54,280 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 7 states. [2020-10-27 13:59:54,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 13:59:54,691 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-27 13:59:54,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 13:59:54,692 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-10-27 13:59:54,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 13:59:54,694 INFO L225 Difference]: With dead ends: 62 [2020-10-27 13:59:54,694 INFO L226 Difference]: Without dead ends: 45 [2020-10-27 13:59:54,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-27 13:59:54,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-27 13:59:54,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2020-10-27 13:59:54,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-27 13:59:54,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-10-27 13:59:54,707 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 26 [2020-10-27 13:59:54,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 13:59:54,707 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-10-27 13:59:54,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 13:59:54,707 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-10-27 13:59:54,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 13:59:54,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 13:59:54,710 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] [2020-10-27 13:59:54,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 13:59:54,710 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 13:59:54,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 13:59:54,711 INFO L82 PathProgramCache]: Analyzing trace with hash 2119343391, now seen corresponding path program 2 times [2020-10-27 13:59:54,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 13:59:54,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732217013] [2020-10-27 13:59:54,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 13:59:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:59:54,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:54,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:55,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:55,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:56,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:58,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:59:58,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 13:59:58,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 13:59:58,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3266 [2020-10-27 13:59:58,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 13:59:58,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 13:59:58,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 13:59:58,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 13:59:58,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:59:58,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 13:59:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:59:58,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:58,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:59:58,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 13:59:58,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:59:58,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 13:59:58,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 13:59:58,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:59:58,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:59:58,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:59:58,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:59:58,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 13:59:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:59:58,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:58,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:59:58,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 13:59:58,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:59:58,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 13:59:58,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 13:59:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 13:59:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:59:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 13:59:58,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:59:58,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 13:59:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:59:58,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:58,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:59:58,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 13:59:58,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:59:58,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 13:59:58,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 13:59:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 13:59:58,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:59:58,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 13:59:58,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:59:58,960 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 13:59:58,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732217013] [2020-10-27 13:59:58,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 13:59:58,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 13:59:58,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509435738] [2020-10-27 13:59:58,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 13:59:58,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 13:59:58,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 13:59:58,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-27 13:59:58,963 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 16 states. [2020-10-27 13:59:59,599 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 42 [2020-10-27 14:00:00,191 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2020-10-27 14:00:00,506 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-27 14:00:00,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:00:00,933 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions. [2020-10-27 14:00:00,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:00:00,934 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 36 [2020-10-27 14:00:00,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:00:00,936 INFO L225 Difference]: With dead ends: 76 [2020-10-27 14:00:00,936 INFO L226 Difference]: Without dead ends: 73 [2020-10-27 14:00:00,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:00:00,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-27 14:00:00,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 58. [2020-10-27 14:00:00,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-27 14:00:00,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-10-27 14:00:00,955 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 36 [2020-10-27 14:00:00,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:00:00,957 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-10-27 14:00:00,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:00:00,958 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-10-27 14:00:00,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 14:00:00,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:00:00,960 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:00:00,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:00:00,960 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:00:00,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:00:00,961 INFO L82 PathProgramCache]: Analyzing trace with hash 117384320, now seen corresponding path program 3 times [2020-10-27 14:00:00,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:00:00,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657997499] [2020-10-27 14:00:00,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:00:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:00,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:01,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:01,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:02,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:03,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:04,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:05,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:06,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:06,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:00:06,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:00:06,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 14:00:06,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:06,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:00:06,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:00:06,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 14:00:06,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:06,697 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-10-27 14:00:06,862 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-10-27 14:00:07,045 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-10-27 14:00:07,293 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2020-10-27 14:00:07,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:00:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:07,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:07,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:07,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:00:07,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:07,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:00:07,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:07,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:00:07,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:07,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:00:07,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:07,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:00:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:07,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:07,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:07,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:07,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:07,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:00:07,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:07,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:07,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 14:00:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:07,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:07,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:07,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:07,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:07,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:00:07,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:07,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:07,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:07,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:07,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:07,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:00:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:07,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:07,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:07,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:07,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:07,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:00:07,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:07,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:07,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:07,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:07,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:07,680 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 14:00:07,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657997499] [2020-10-27 14:00:07,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:00:07,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:00:07,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243567276] [2020-10-27 14:00:07,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:00:07,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:00:07,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:00:07,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:00:07,683 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 18 states. [2020-10-27 14:00:08,176 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2020-10-27 14:00:08,699 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 43 [2020-10-27 14:00:08,884 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 40 [2020-10-27 14:00:09,093 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 46 [2020-10-27 14:00:09,405 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 60 [2020-10-27 14:00:09,598 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 45 [2020-10-27 14:00:09,854 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 54 [2020-10-27 14:00:10,162 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 57 [2020-10-27 14:00:10,378 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 51 [2020-10-27 14:00:10,727 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 62 [2020-10-27 14:00:11,530 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 74 [2020-10-27 14:00:11,723 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 48 [2020-10-27 14:00:11,968 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 51 [2020-10-27 14:00:12,162 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2020-10-27 14:00:12,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:00:12,361 INFO L93 Difference]: Finished difference Result 110 states and 126 transitions. [2020-10-27 14:00:12,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:00:12,362 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 44 [2020-10-27 14:00:12,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:00:12,367 INFO L225 Difference]: With dead ends: 110 [2020-10-27 14:00:12,367 INFO L226 Difference]: Without dead ends: 107 [2020-10-27 14:00:12,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=266, Invalid=1066, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:00:12,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-27 14:00:12,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 90. [2020-10-27 14:00:12,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-27 14:00:12,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2020-10-27 14:00:12,392 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 44 [2020-10-27 14:00:12,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:00:12,392 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2020-10-27 14:00:12,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:00:12,392 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2020-10-27 14:00:12,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 14:00:12,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:00:12,395 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:00:12,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:00:12,395 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:00:12,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:00:12,396 INFO L82 PathProgramCache]: Analyzing trace with hash -703736598, now seen corresponding path program 1 times [2020-10-27 14:00:12,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:00:12,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263667064] [2020-10-27 14:00:12,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:00:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:12,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:12,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:12,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:12,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:14,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:15,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:15,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 14:00:15,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:00:15,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3328 [2020-10-27 14:00:15,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:15,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:00:15,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 14:00:15,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:00:15,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:15,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:00:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:15,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:15,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:15,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:00:15,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:15,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:00:15,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:15,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:00:15,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:15,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:00:15,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:15,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:00:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:15,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:15,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:15,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:15,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:15,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:00:15,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:15,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:00:15,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:15,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:00:15,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:15,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 14:00:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:15,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:15,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:15,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:15,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:15,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:00:15,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:00:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:15,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:00:15,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:15,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:00:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:15,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:15,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:15,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:15,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:15,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:00:15,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:15,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:00:15,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:15,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:00:15,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:15,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:00:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:15,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:15,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:15,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:15,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:15,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:00:15,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:15,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:15,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:15,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:15,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:15,910 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 14:00:15,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263667064] [2020-10-27 14:00:15,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:00:15,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:00:15,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286882853] [2020-10-27 14:00:15,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:00:15,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:00:15,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:00:15,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:00:15,913 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand 9 states. [2020-10-27 14:00:16,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:00:16,346 INFO L93 Difference]: Finished difference Result 141 states and 157 transitions. [2020-10-27 14:00:16,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:00:16,347 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-10-27 14:00:16,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:00:16,348 INFO L225 Difference]: With dead ends: 141 [2020-10-27 14:00:16,348 INFO L226 Difference]: Without dead ends: 80 [2020-10-27 14:00:16,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:00:16,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-27 14:00:16,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2020-10-27 14:00:16,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-27 14:00:16,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2020-10-27 14:00:16,364 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 52 [2020-10-27 14:00:16,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:00:16,365 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2020-10-27 14:00:16,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:00:16,365 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2020-10-27 14:00:16,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 14:00:16,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:00:16,367 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:00:16,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:00:16,367 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:00:16,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:00:16,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1747106529, now seen corresponding path program 4 times [2020-10-27 14:00:16,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:00:16,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521105217] [2020-10-27 14:00:16,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:00:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:16,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:16,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:16,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:16,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:17,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:19,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:20,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:21,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:21,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 14:00:21,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:00:21,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:00:21,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:21,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:00:21,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:00:21,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 14:00:21,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:00:21,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:00:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:21,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:21,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:21,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:00:21,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:21,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:00:21,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:21,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:00:21,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:21,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:00:21,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:21,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:00:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:21,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:21,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:21,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:21,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:21,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:00:21,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:21,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:21,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:21,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:21,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:21,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 14:00:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:21,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:21,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:21,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:21,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:21,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:00:21,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:21,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:21,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:21,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:21,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:21,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:00:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:21,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:21,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:21,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:21,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:21,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:00:21,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:21,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:21,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:00:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:21,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:21,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:21,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:21,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:21,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:00:21,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:21,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:21,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:00:21,549 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-27 14:00:21,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521105217] [2020-10-27 14:00:21,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:00:21,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:00:21,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26742063] [2020-10-27 14:00:21,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:00:21,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:00:21,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:00:21,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:00:21,554 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand 10 states. [2020-10-27 14:00:21,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:00:21,900 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2020-10-27 14:00:21,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:00:21,901 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-10-27 14:00:21,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:00:21,902 INFO L225 Difference]: With dead ends: 75 [2020-10-27 14:00:21,902 INFO L226 Difference]: Without dead ends: 67 [2020-10-27 14:00:21,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:00:21,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-27 14:00:21,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 62. [2020-10-27 14:00:21,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 14:00:21,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2020-10-27 14:00:21,931 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 52 [2020-10-27 14:00:21,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:00:21,932 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2020-10-27 14:00:21,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:00:21,933 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2020-10-27 14:00:21,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 14:00:21,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:00:21,936 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:00:21,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:00:21,937 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:00:21,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:00:21,937 INFO L82 PathProgramCache]: Analyzing trace with hash -451620276, now seen corresponding path program 2 times [2020-10-27 14:00:21,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:00:21,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569138287] [2020-10-27 14:00:21,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:00:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:21,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:22,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:22,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:22,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:23,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:25,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:26,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:26,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 14:00:26,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:00:26,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:00:26,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:26,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:00:26,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:00:26,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 14:00:26,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:27,446 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2020-10-27 14:00:27,693 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 50 [2020-10-27 14:00:27,890 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-10-27 14:00:28,146 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 38 [2020-10-27 14:00:28,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:00:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:28,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:28,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:28,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:00:28,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:28,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:00:28,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:28,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:00:28,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:28,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:00:28,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:28,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:00:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:28,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:28,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:28,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:28,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:28,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:00:28,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:28,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:28,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:28,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:28,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:28,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 14:00:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:28,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:28,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:28,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:28,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:28,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:00:28,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:28,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:28,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:28,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:28,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:28,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:00:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:28,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:28,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:28,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:28,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:28,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:00:28,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:28,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:28,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:28,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:28,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:28,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:00:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:28,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:28,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:28,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:28,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:28,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:00:28,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:28,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:28,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:28,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:28,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:28,534 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 14:00:28,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569138287] [2020-10-27 14:00:28,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:00:28,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:00:28,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097665568] [2020-10-27 14:00:28,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:00:28,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:00:28,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:00:28,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:00:28,537 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand 20 states. [2020-10-27 14:00:28,997 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2020-10-27 14:00:29,346 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-10-27 14:00:29,677 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2020-10-27 14:00:30,018 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2020-10-27 14:00:30,576 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-10-27 14:00:30,959 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-10-27 14:00:31,133 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2020-10-27 14:00:31,485 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2020-10-27 14:00:32,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:00:32,100 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2020-10-27 14:00:32,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 14:00:32,101 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 54 [2020-10-27 14:00:32,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:00:32,103 INFO L225 Difference]: With dead ends: 97 [2020-10-27 14:00:32,106 INFO L226 Difference]: Without dead ends: 94 [2020-10-27 14:00:32,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=295, Invalid=1345, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 14:00:32,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-27 14:00:32,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 80. [2020-10-27 14:00:32,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-27 14:00:32,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2020-10-27 14:00:32,155 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 91 transitions. Word has length 54 [2020-10-27 14:00:32,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:00:32,156 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 91 transitions. [2020-10-27 14:00:32,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:00:32,156 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 91 transitions. [2020-10-27 14:00:32,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 14:00:32,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:00:32,159 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:00:32,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:00:32,161 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:00:32,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:00:32,163 INFO L82 PathProgramCache]: Analyzing trace with hash 2052728323, now seen corresponding path program 5 times [2020-10-27 14:00:32,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:00:32,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686597304] [2020-10-27 14:00:32,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:00:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:32,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:32,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:32,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:33,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:35,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:37,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:37,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 14:00:37,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:00:37,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:00:37,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:37,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:00:37,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:00:37,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 14:00:37,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:38,443 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2020-10-27 14:00:38,645 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 55 [2020-10-27 14:00:39,250 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 89 [2020-10-27 14:00:39,442 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 23 [2020-10-27 14:00:39,630 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 19 [2020-10-27 14:00:39,830 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 19 [2020-10-27 14:00:40,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:00:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:40,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:40,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:40,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:00:40,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:40,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:00:40,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:00:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:00:40,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:40,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:00:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:40,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:40,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:40,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:40,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:40,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:00:40,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:40,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:40,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:40,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:40,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:40,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 14:00:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:40,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:40,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:40,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:40,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:40,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:00:40,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:40,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:40,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:40,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:40,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:00:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:40,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:40,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:40,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:40,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:40,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:00:40,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:40,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:40,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:00:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:40,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:40,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:40,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:40,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:40,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:00:40,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:40,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:40,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:40,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:40,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:40,131 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 2 proven. 35 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 14:00:40,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686597304] [2020-10-27 14:00:40,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:00:40,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:00:40,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227124691] [2020-10-27 14:00:40,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:00:40,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:00:40,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:00:40,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:00:40,134 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. Second operand 22 states. [2020-10-27 14:00:40,911 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 83 [2020-10-27 14:00:41,103 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 32 [2020-10-27 14:00:41,345 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 35 [2020-10-27 14:00:41,584 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 39 [2020-10-27 14:00:41,788 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 45 [2020-10-27 14:00:42,064 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 51 [2020-10-27 14:00:42,338 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 56 [2020-10-27 14:00:42,600 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 41 [2020-10-27 14:00:42,916 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 55 [2020-10-27 14:00:43,136 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 41 [2020-10-27 14:00:43,494 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2020-10-27 14:00:43,750 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 49 [2020-10-27 14:00:44,868 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 84 [2020-10-27 14:00:45,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:00:45,148 INFO L93 Difference]: Finished difference Result 134 states and 156 transitions. [2020-10-27 14:00:45,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:00:45,149 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 54 [2020-10-27 14:00:45,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:00:45,152 INFO L225 Difference]: With dead ends: 134 [2020-10-27 14:00:45,152 INFO L226 Difference]: Without dead ends: 131 [2020-10-27 14:00:45,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=261, Invalid=1145, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:00:45,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-27 14:00:45,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 84. [2020-10-27 14:00:45,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 14:00:45,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 97 transitions. [2020-10-27 14:00:45,178 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 97 transitions. Word has length 54 [2020-10-27 14:00:45,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:00:45,178 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 97 transitions. [2020-10-27 14:00:45,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:00:45,178 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 97 transitions. [2020-10-27 14:00:45,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 14:00:45,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:00:45,182 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:00:45,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:00:45,182 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:00:45,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:00:45,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1313996590, now seen corresponding path program 3 times [2020-10-27 14:00:45,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:00:45,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719287202] [2020-10-27 14:00:45,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:00:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:45,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:45,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:45,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:46,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:48,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:49,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:50,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:50,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 14:00:50,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:00:50,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 14:00:50,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:00:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:00:50,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:00:50,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:50,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:00:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:50,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:50,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:50,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:00:50,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:50,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:00:50,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:50,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:00:50,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:50,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:00:50,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:50,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:00:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:50,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:50,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:50,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:50,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:50,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:00:50,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:50,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:50,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:50,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:50,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:50,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 14:00:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:50,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:50,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:50,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:50,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:50,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:00:50,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:50,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:50,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:50,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:50,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:50,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:00:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:50,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:50,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:50,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:50,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:50,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:00:50,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:50,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:50,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:50,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:50,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:50,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:00:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:50,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:50,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:50,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:50,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:50,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:00:50,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:50,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:00:50,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:00:50,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:00:50,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:50,372 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 14:00:50,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719287202] [2020-10-27 14:00:50,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:00:50,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:00:50,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354068739] [2020-10-27 14:00:50,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:00:50,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:00:50,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:00:50,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:00:50,374 INFO L87 Difference]: Start difference. First operand 84 states and 97 transitions. Second operand 12 states. [2020-10-27 14:00:50,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:00:50,910 INFO L93 Difference]: Finished difference Result 140 states and 156 transitions. [2020-10-27 14:00:50,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:00:50,911 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 56 [2020-10-27 14:00:50,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:00:50,912 INFO L225 Difference]: With dead ends: 140 [2020-10-27 14:00:50,912 INFO L226 Difference]: Without dead ends: 92 [2020-10-27 14:00:50,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:00:50,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-27 14:00:50,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 75. [2020-10-27 14:00:50,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-27 14:00:50,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2020-10-27 14:00:50,929 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 56 [2020-10-27 14:00:50,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:00:50,930 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2020-10-27 14:00:50,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:00:50,930 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2020-10-27 14:00:50,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 14:00:50,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:00:50,931 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:00:50,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:00:50,931 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:00:50,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:00:50,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1998714660, now seen corresponding path program 6 times [2020-10-27 14:00:50,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:00:50,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532629358] [2020-10-27 14:00:50,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:00:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:50,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:50,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:51,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:51,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:52,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:55,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:55,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 14:00:55,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:00:55,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:00:55,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:55,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:00:55,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:00:55,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 14:00:55,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:56,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:00:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:56,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:56,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:56,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:00:56,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:56,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:00:56,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:56,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:00:56,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:56,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:00:56,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:56,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:00:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:56,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:56,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:56,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:56,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:56,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:00:56,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:56,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:56,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:56,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:56,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:56,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 14:00:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:56,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:56,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:56,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:56,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:56,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:00:56,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:56,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:56,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:56,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:56,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:56,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:00:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:56,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:56,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:56,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:56,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:56,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:00:56,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:56,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:56,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:56,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:56,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:56,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:00:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:56,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:56,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:56,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:56,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:56,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:00:56,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:56,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:56,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:56,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:56,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:56,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:00:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:56,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:56,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:56,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:56,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:56,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:00:56,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:56,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:56,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:56,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:56,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:56,136 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 6 proven. 44 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-27 14:00:56,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532629358] [2020-10-27 14:00:56,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:00:56,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:00:56,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478632939] [2020-10-27 14:00:56,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:00:56,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:00:56,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:00:56,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:00:56,138 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand 12 states. [2020-10-27 14:00:56,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:00:56,695 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2020-10-27 14:00:56,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:00:56,695 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-10-27 14:00:56,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:00:56,697 INFO L225 Difference]: With dead ends: 87 [2020-10-27 14:00:56,697 INFO L226 Difference]: Without dead ends: 79 [2020-10-27 14:00:56,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:00:56,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-27 14:00:56,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2020-10-27 14:00:56,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-27 14:00:56,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-10-27 14:00:56,712 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 62 [2020-10-27 14:00:56,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:00:56,712 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-10-27 14:00:56,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:00:56,712 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-10-27 14:00:56,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 14:00:56,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:00:56,713 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:00:56,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:00:56,714 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:00:56,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:00:56,714 INFO L82 PathProgramCache]: Analyzing trace with hash 946473999, now seen corresponding path program 4 times [2020-10-27 14:00:56,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:00:56,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266672828] [2020-10-27 14:00:56,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:00:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:56,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:56,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:57,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:59,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:01,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:01,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 14:01:01,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:01:01,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:01:01,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:01:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:01:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 14:01:01,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:01,992 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 32 [2020-10-27 14:01:02,151 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 33 [2020-10-27 14:01:02,294 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 34 [2020-10-27 14:01:02,465 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 36 [2020-10-27 14:01:02,630 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2020-10-27 14:01:02,869 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 51 [2020-10-27 14:01:03,087 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2020-10-27 14:01:03,342 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 42 [2020-10-27 14:01:03,508 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 37 [2020-10-27 14:01:03,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:01:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:03,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:03,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:03,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:01:03,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:03,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:03,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:03,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:01:03,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:03,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:01:03,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:03,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:01:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:03,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:03,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:03,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:03,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:03,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:01:03,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:03,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:03,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:03,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 14:01:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:03,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:03,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:03,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:03,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:03,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:01:03,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:03,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:03,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:03,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:03,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:03,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:01:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:03,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:03,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:03,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:03,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:03,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:03,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:03,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:03,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:03,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:03,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:03,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:01:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:03,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:03,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:03,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:03,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:03,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:01:03,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:03,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:03,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:01:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:03,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:03,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:03,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:03,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:03,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:03,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:03,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:03,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:03,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:03,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:03,819 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 14:01:03,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266672828] [2020-10-27 14:01:03,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:01:03,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:01:03,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737056500] [2020-10-27 14:01:03,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:01:03,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:01:03,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:01:03,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:01:03,822 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 18 states. [2020-10-27 14:01:04,798 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-27 14:01:05,120 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-10-27 14:01:05,435 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-10-27 14:01:05,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:01:05,696 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2020-10-27 14:01:05,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:01:05,700 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 64 [2020-10-27 14:01:05,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:01:05,701 INFO L225 Difference]: With dead ends: 85 [2020-10-27 14:01:05,701 INFO L226 Difference]: Without dead ends: 82 [2020-10-27 14:01:05,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:01:05,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-27 14:01:05,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2020-10-27 14:01:05,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-27 14:01:05,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-10-27 14:01:05,721 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 64 [2020-10-27 14:01:05,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:01:05,721 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-10-27 14:01:05,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:01:05,721 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-10-27 14:01:05,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 14:01:05,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:01:05,722 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:01:05,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:01:05,722 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:01:05,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:01:05,723 INFO L82 PathProgramCache]: Analyzing trace with hash -964993658, now seen corresponding path program 7 times [2020-10-27 14:01:05,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:01:05,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081604266] [2020-10-27 14:01:05,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:01:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:05,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:05,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:06,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:06,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:07,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:07,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:09,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:10,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:10,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 14:01:10,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:01:10,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 14:01:10,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:10,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:01:10,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:01:10,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:01:10,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:10,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:01:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:10,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:10,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:10,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:01:10,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:10,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:10,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:10,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:01:10,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:10,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:01:10,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:10,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:01:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:10,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:10,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:10,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:10,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:10,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:10,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:10,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:10,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:10,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:10,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:10,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 14:01:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:10,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:10,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:10,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:10,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:10,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:01:10,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:10,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:10,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:10,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:10,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:10,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:01:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:10,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:10,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:10,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:10,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:10,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:10,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:10,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:10,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:10,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:10,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:10,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:01:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:10,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:10,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:10,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:10,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:10,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:10,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:10,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:10,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:10,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:10,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:11,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:01:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:11,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:11,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:11,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:11,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:11,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:11,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:11,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:11,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:11,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:11,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 15 proven. 46 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-27 14:01:11,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081604266] [2020-10-27 14:01:11,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:01:11,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:01:11,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836159960] [2020-10-27 14:01:11,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:01:11,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:01:11,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:01:11,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:01:11,026 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 14 states. [2020-10-27 14:01:11,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:01:11,796 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2020-10-27 14:01:11,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:01:11,797 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2020-10-27 14:01:11,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:01:11,798 INFO L225 Difference]: With dead ends: 111 [2020-10-27 14:01:11,798 INFO L226 Difference]: Without dead ends: 72 [2020-10-27 14:01:11,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:01:11,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-27 14:01:11,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 65. [2020-10-27 14:01:11,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-27 14:01:11,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2020-10-27 14:01:11,814 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 64 [2020-10-27 14:01:11,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:01:11,815 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2020-10-27 14:01:11,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:01:11,815 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2020-10-27 14:01:11,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 14:01:11,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:01:11,816 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:01:11,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:01:11,816 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:01:11,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:01:11,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1525370008, now seen corresponding path program 8 times [2020-10-27 14:01:11,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:01:11,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260948642] [2020-10-27 14:01:11,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:01:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:11,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:11,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:12,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:16,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:16,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 14:01:16,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:01:16,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:01:16,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:16,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:01:16,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:01:16,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 14:01:16,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:17,175 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 23 [2020-10-27 14:01:17,308 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 28 [2020-10-27 14:01:17,479 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 32 [2020-10-27 14:01:17,703 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 48 [2020-10-27 14:01:17,871 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2020-10-27 14:01:18,008 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 36 [2020-10-27 14:01:18,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:01:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:18,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:18,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:18,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:01:18,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:18,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:18,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:18,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:01:18,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:18,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:01:18,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:18,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:01:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:18,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:18,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:18,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:18,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:18,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:18,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:18,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:18,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:18,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:18,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:18,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 14:01:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:18,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:18,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:18,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:18,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:18,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:18,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:18,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:18,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:18,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:18,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:18,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:01:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:18,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:18,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:18,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:18,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:18,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:01:18,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:18,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:18,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:18,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:18,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:18,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:01:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:18,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:18,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:18,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:18,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:18,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:01:18,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:18,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:18,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:18,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:18,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:01:18,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:01:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:18,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:18,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:18,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:18,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:18,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:01:18,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:18,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:18,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:18,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:18,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-27 14:01:18,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260948642] [2020-10-27 14:01:18,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:01:18,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:01:18,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554255071] [2020-10-27 14:01:18,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:01:18,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:01:18,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:01:18,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:01:18,285 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 14 states. [2020-10-27 14:01:18,727 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2020-10-27 14:01:18,916 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2020-10-27 14:01:19,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:01:19,185 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-10-27 14:01:19,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:01:19,187 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2020-10-27 14:01:19,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:01:19,188 INFO L225 Difference]: With dead ends: 72 [2020-10-27 14:01:19,188 INFO L226 Difference]: Without dead ends: 69 [2020-10-27 14:01:19,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:01:19,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-27 14:01:19,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-27 14:01:19,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-27 14:01:19,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-10-27 14:01:19,207 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 66 [2020-10-27 14:01:19,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:01:19,207 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-10-27 14:01:19,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:01:19,207 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-10-27 14:01:19,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 14:01:19,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:01:19,209 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:01:19,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:01:19,209 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:01:19,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:01:19,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1324169788, now seen corresponding path program 5 times [2020-10-27 14:01:19,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:01:19,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213630837] [2020-10-27 14:01:19,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:01:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:19,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:19,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:21,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:21,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:22,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:24,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:24,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 14:01:24,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:01:24,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 14:01:24,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:24,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:01:24,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:01:24,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 14:01:24,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:24,669 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2020-10-27 14:01:24,881 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 44 [2020-10-27 14:01:25,134 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 54 [2020-10-27 14:01:25,474 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 64 [2020-10-27 14:01:25,703 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 58 [2020-10-27 14:01:26,043 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2020-10-27 14:01:26,335 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2020-10-27 14:01:26,741 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 44 [2020-10-27 14:01:26,909 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2020-10-27 14:01:27,069 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 38 [2020-10-27 14:01:27,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:01:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:27,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:27,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:27,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:01:27,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:27,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:27,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:27,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:01:27,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:27,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:01:27,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:01:27,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:01:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:27,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:27,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:27,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:27,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:27,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:27,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:27,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:27,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 14:01:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:27,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:27,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:27,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:27,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:27,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:27,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:27,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:27,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:27,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:27,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:27,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:01:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:27,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:27,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:27,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:27,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:27,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:27,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:27,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:27,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:27,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:27,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:27,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:01:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:27,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:27,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:27,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:27,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:27,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:01:27,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:27,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:27,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:27,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:27,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:27,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:01:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:27,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:27,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:27,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:27,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:27,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:01:27,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:27,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:27,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:27,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:27,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:27,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:01:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:27,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:27,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:27,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:27,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:27,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:27,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:27,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:27,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:27,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:27,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:27,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:01:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:27,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:27,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:27,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:27,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:27,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:27,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:27,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:27,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:27,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:27,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:28,030 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 9 proven. 63 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-27 14:01:28,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213630837] [2020-10-27 14:01:28,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:01:28,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:01:28,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671065421] [2020-10-27 14:01:28,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:01:28,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:01:28,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:01:28,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:01:28,032 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 26 states. [2020-10-27 14:01:29,008 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2020-10-27 14:01:29,216 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-27 14:01:29,622 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 91 [2020-10-27 14:01:29,815 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-27 14:01:30,039 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2020-10-27 14:01:30,302 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 67 [2020-10-27 14:01:30,533 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 54 [2020-10-27 14:01:30,826 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2020-10-27 14:01:31,036 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 48 [2020-10-27 14:01:31,289 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2020-10-27 14:01:31,516 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 53 [2020-10-27 14:01:31,772 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 70 [2020-10-27 14:01:32,027 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2020-10-27 14:01:32,300 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2020-10-27 14:01:32,693 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 89 [2020-10-27 14:01:33,097 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2020-10-27 14:01:33,393 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2020-10-27 14:01:33,657 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 61 [2020-10-27 14:01:34,029 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 88 [2020-10-27 14:01:34,749 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 86 [2020-10-27 14:01:35,055 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2020-10-27 14:01:35,435 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 68 [2020-10-27 14:01:35,695 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2020-10-27 14:01:36,184 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2020-10-27 14:01:36,508 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2020-10-27 14:01:36,731 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2020-10-27 14:01:37,077 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2020-10-27 14:01:37,265 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 45 [2020-10-27 14:01:37,644 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2020-10-27 14:01:37,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:01:37,764 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2020-10-27 14:01:37,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-27 14:01:37,765 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 82 [2020-10-27 14:01:37,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:01:37,767 INFO L225 Difference]: With dead ends: 105 [2020-10-27 14:01:37,767 INFO L226 Difference]: Without dead ends: 102 [2020-10-27 14:01:37,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 772 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=523, Invalid=3259, Unknown=0, NotChecked=0, Total=3782 [2020-10-27 14:01:37,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-27 14:01:37,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 86. [2020-10-27 14:01:37,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-27 14:01:37,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2020-10-27 14:01:37,792 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 82 [2020-10-27 14:01:37,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:01:37,793 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2020-10-27 14:01:37,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:01:37,793 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2020-10-27 14:01:37,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 14:01:37,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:01:37,794 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:01:37,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:01:37,794 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:01:37,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:01:37,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1009097630, now seen corresponding path program 6 times [2020-10-27 14:01:37,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:01:37,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391798763] [2020-10-27 14:01:37,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:01:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:37,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:37,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:38,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:40,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:42,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:42,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 14:01:42,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:01:42,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:01:42,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:42,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:01:42,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:01:42,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 14:01:42,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:43,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:01:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:43,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:43,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:43,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:01:43,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:43,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:43,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:43,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:01:43,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:43,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:01:43,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:43,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:01:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:43,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:43,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:43,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:43,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:43,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:43,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:43,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:43,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:43,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:43,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:43,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 14:01:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:43,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:43,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:43,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:43,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:43,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:43,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:43,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:43,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:43,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:43,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:43,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:01:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:43,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:43,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:43,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:43,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:43,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:43,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:43,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:43,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:43,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:43,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:43,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:01:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:43,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:43,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:43,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:43,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:43,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:43,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:43,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:43,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:43,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:43,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:43,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:01:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:43,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:43,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:43,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:43,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:43,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:43,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:43,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:43,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:01:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:43,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:43,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:43,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:43,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:43,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:43,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:01:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:01:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:01:43,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:43,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:01:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:43,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:43,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:43,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:43,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:43,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:01:43,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:43,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:01:43,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:01:43,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:01:43,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:43,128 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 40 proven. 45 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-27 14:01:43,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391798763] [2020-10-27 14:01:43,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:01:43,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:01:43,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679680475] [2020-10-27 14:01:43,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:01:43,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:01:43,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:01:43,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:01:43,134 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 16 states. [2020-10-27 14:01:44,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:01:44,065 INFO L93 Difference]: Finished difference Result 170 states and 185 transitions. [2020-10-27 14:01:44,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:01:44,067 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 84 [2020-10-27 14:01:44,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:01:44,068 INFO L225 Difference]: With dead ends: 170 [2020-10-27 14:01:44,068 INFO L226 Difference]: Without dead ends: 137 [2020-10-27 14:01:44,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:01:44,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-27 14:01:44,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 116. [2020-10-27 14:01:44,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 14:01:44,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 125 transitions. [2020-10-27 14:01:44,091 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 125 transitions. Word has length 84 [2020-10-27 14:01:44,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:01:44,091 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 125 transitions. [2020-10-27 14:01:44,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:01:44,091 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 125 transitions. [2020-10-27 14:01:44,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 14:01:44,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:01:44,092 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:01:44,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:01:44,093 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:01:44,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:01:44,093 INFO L82 PathProgramCache]: Analyzing trace with hash -816288090, now seen corresponding path program 7 times [2020-10-27 14:01:44,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:01:44,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689502558] [2020-10-27 14:01:44,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:01:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:44,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:44,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:46,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:47,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:49,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:49,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 14:01:49,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:01:49,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 14:01:49,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:49,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:01:49,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:01:49,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 14:01:49,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:49,682 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-10-27 14:01:50,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:01:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:50,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:50,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:50,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:01:50,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:50,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:50,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:50,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:01:50,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:50,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:01:50,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:50,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:01:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:50,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:50,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:50,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:50,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:50,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:50,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:50,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:50,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:50,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:50,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:50,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 14:01:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:50,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:50,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:50,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:50,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:50,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:50,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:50,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:50,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:50,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:50,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:50,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:01:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:50,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:50,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:50,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:50,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:50,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:50,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:50,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:50,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:50,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:50,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:50,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:01:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:50,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:50,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:50,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:50,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:50,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:01:50,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:50,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:50,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:01:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:50,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:50,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:50,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:50,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:50,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:01:50,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:50,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:50,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:50,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:50,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:50,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:01:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:50,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:50,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:50,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:50,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:50,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:01:50,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:50,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:50,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:50,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:50,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:50,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:01:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:50,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:50,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:50,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:50,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:50,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:01:50,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:50,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:50,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:50,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:50,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:50,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:01:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:50,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:50,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:50,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:50,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:50,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:50,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:50,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:50,839 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 10 proven. 75 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-27 14:01:50,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689502558] [2020-10-27 14:01:50,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:01:50,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:01:50,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907069275] [2020-10-27 14:01:50,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:01:50,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:01:50,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:01:50,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:01:50,841 INFO L87 Difference]: Start difference. First operand 116 states and 125 transitions. Second operand 22 states. [2020-10-27 14:01:51,768 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 14:01:52,013 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-10-27 14:01:52,217 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-27 14:01:52,461 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-10-27 14:01:52,616 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-10-27 14:01:53,117 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2020-10-27 14:01:53,393 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-10-27 14:01:53,684 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2020-10-27 14:01:54,042 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2020-10-27 14:01:54,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:01:54,491 INFO L93 Difference]: Finished difference Result 139 states and 151 transitions. [2020-10-27 14:01:54,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 14:01:54,492 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 90 [2020-10-27 14:01:54,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:01:54,495 INFO L225 Difference]: With dead ends: 139 [2020-10-27 14:01:54,495 INFO L226 Difference]: Without dead ends: 107 [2020-10-27 14:01:54,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=219, Invalid=1263, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:01:54,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-27 14:01:54,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2020-10-27 14:01:54,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-27 14:01:54,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2020-10-27 14:01:54,524 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 90 [2020-10-27 14:01:54,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:01:54,524 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2020-10-27 14:01:54,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:01:54,524 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2020-10-27 14:01:54,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 14:01:54,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:01:54,525 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:01:54,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:01:54,526 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:01:54,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:01:54,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1607762689, now seen corresponding path program 8 times [2020-10-27 14:01:54,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:01:54,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385705494] [2020-10-27 14:01:54,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:01:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:54,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:54,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:59,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:59,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:59,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 14:01:59,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:01:59,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5290 [2020-10-27 14:01:59,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:59,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:01:59,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:01:59,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 14:01:59,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:02:00,216 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 23 [2020-10-27 14:02:00,340 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 28 [2020-10-27 14:02:00,457 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 28 [2020-10-27 14:02:00,621 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 28 [2020-10-27 14:02:00,801 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 32 [2020-10-27 14:02:01,121 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 46 [2020-10-27 14:02:01,433 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 36 [2020-10-27 14:02:01,754 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 53 [2020-10-27 14:02:02,146 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 36 [2020-10-27 14:02:02,367 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 33 [2020-10-27 14:02:02,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:02:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:02,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:02,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:02,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:02:02,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:02,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:02,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:02,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:02:02,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:02,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:02:02,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:02,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:02:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:02,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:02,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:02,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:02,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:02,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:02:02,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:02,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:02,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:02,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:02,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:02,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 14:02:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:02,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:02,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:02,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:02,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:02,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:02:02,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:02,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:02,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:02,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:02,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:02,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:02:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:02,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:02,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:02,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:02,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:02,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:02:02,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:02,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:02,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:02,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:02,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:02,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:02:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:02,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:02,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:02,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:02,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:02,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:02:02,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:02,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:02,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:02,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:02,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:02,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:02:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:02,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:02,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:02,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:02,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:02,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:02:02,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:02,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:02,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:02,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:02,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:02,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:02:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:02,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:02,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:02,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:02,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:02,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:02:02,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:02,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:02,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:02:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:02,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:02,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:02,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:02,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:02,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:02:02,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:02,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:02,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:02,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:02,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:02,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:02:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:02,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:02,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:02,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:02,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:02,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:02:02,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:02,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:02,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:02,825 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 4 proven. 100 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-27 14:02:02,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385705494] [2020-10-27 14:02:02,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:02:02,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:02:02,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955327717] [2020-10-27 14:02:02,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:02:02,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:02:02,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:02:02,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:02:02,828 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand 20 states. [2020-10-27 14:02:04,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:02:04,456 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2020-10-27 14:02:04,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:02:04,458 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 92 [2020-10-27 14:02:04,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:02:04,460 INFO L225 Difference]: With dead ends: 117 [2020-10-27 14:02:04,460 INFO L226 Difference]: Without dead ends: 114 [2020-10-27 14:02:04,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:02:04,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-27 14:02:04,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2020-10-27 14:02:04,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-27 14:02:04,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 120 transitions. [2020-10-27 14:02:04,483 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 120 transitions. Word has length 92 [2020-10-27 14:02:04,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:02:04,484 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 120 transitions. [2020-10-27 14:02:04,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:02:04,484 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 120 transitions. [2020-10-27 14:02:04,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 14:02:04,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:02:04,485 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:02:04,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:02:04,485 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:02:04,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:02:04,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1058143417, now seen corresponding path program 9 times [2020-10-27 14:02:04,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:02:04,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538017794] [2020-10-27 14:02:04,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:02:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:04,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:04,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:04,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:09,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:09,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:09,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 14:02:09,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:02:09,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:02:09,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:09,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:02:09,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:02:09,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 14:02:09,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:11,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:02:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:11,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:11,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:11,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:02:11,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:11,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:11,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:11,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:02:11,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:11,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:02:11,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:11,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:02:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:11,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:11,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:11,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:11,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:11,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:02:11,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:11,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:11,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:11,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:11,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:11,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 14:02:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:11,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:11,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:11,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:11,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:11,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:02:11,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:11,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:11,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:02:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:11,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:11,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:11,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:11,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:11,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:02:11,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:11,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:11,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:11,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:11,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:11,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:02:11,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:11,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:11,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:11,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:11,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:11,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:02:11,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:11,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:11,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:11,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:11,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:11,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:02:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:11,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:11,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:11,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:11,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:11,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:02:11,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:11,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:11,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:11,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:11,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:11,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:02:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:11,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:11,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:11,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:11,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:11,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:02:11,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:11,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:11,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:11,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:11,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:11,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:02:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:11,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:11,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:11,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:11,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:11,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:02:11,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:11,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:11,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:11,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:11,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:11,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:02:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:11,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:11,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:11,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:11,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:11,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:11,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:11,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:11,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:11,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:11,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:11,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:02:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:11,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:11,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:11,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:11,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:11,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:02:11,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:11,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:11,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:11,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:11,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:11,174 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 6 proven. 107 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-27 14:02:11,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538017794] [2020-10-27 14:02:11,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:02:11,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:02:11,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148411111] [2020-10-27 14:02:11,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:02:11,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:02:11,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:02:11,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:02:11,176 INFO L87 Difference]: Start difference. First operand 112 states and 120 transitions. Second operand 22 states. [2020-10-27 14:02:12,849 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-27 14:02:13,100 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-27 14:02:13,356 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-10-27 14:02:13,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:02:13,699 INFO L93 Difference]: Finished difference Result 125 states and 133 transitions. [2020-10-27 14:02:13,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:02:13,705 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 98 [2020-10-27 14:02:13,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:02:13,706 INFO L225 Difference]: With dead ends: 125 [2020-10-27 14:02:13,706 INFO L226 Difference]: Without dead ends: 93 [2020-10-27 14:02:13,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:02:13,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-27 14:02:13,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2020-10-27 14:02:13,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-27 14:02:13,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2020-10-27 14:02:13,729 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 98 [2020-10-27 14:02:13,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:02:13,729 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2020-10-27 14:02:13,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:02:13,730 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2020-10-27 14:02:13,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-27 14:02:13,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:02:13,731 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:02:13,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:02:13,732 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:02:13,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:02:13,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1367602643, now seen corresponding path program 10 times [2020-10-27 14:02:13,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:02:13,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293463328] [2020-10-27 14:02:13,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:02:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:13,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:13,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:16,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:17,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:17,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:17,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:18,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:19,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:19,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 14:02:19,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:02:19,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5329 [2020-10-27 14:02:19,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:19,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:02:19,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:02:19,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 14:02:19,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:19,338 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 21 [2020-10-27 14:02:19,466 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 29 [2020-10-27 14:02:19,657 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 38 [2020-10-27 14:02:19,886 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 47 [2020-10-27 14:02:20,133 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 54 [2020-10-27 14:02:20,364 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 42 [2020-10-27 14:02:20,522 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 38 [2020-10-27 14:02:20,700 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2020-10-27 14:02:20,886 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2020-10-27 14:02:21,061 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2020-10-27 14:02:21,213 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2020-10-27 14:02:21,373 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2020-10-27 14:02:21,594 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 41 [2020-10-27 14:02:22,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:02:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:22,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:22,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:22,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:02:22,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:22,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:22,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:22,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:02:22,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:22,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:02:22,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:22,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:02:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:22,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:22,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:22,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:22,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:22,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:02:22,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:22,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:22,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:22,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:22,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:22,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 14:02:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:22,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:22,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:22,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:22,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:22,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:02:22,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:22,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:22,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:22,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:22,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:22,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:02:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:22,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:22,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:22,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:22,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:22,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:22,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:22,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:22,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:22,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:22,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:22,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:02:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:22,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:22,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:22,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:22,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:22,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:22,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:22,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:22,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:22,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:22,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:22,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:02:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:22,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:22,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:22,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:22,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:22,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:02:22,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:22,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:22,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:22,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:22,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:22,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:02:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:22,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:22,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:22,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:22,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:22,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:02:22,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:22,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:22,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:22,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:22,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:22,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:02:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:22,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:22,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:22,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:22,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:22,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:22,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:22,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:22,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:22,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:22,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:22,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:02:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:22,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:22,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:22,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:22,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:22,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:22,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:22,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:22,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:02:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:22,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:22,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:22,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:22,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:22,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:22,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:22,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:22,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:22,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:22,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:22,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 14:02:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:22,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:22,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:22,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:22,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:22,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:22,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:22,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:22,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:22,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:22,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:22,325 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 42 proven. 72 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-27 14:02:22,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293463328] [2020-10-27 14:02:22,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:02:22,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:02:22,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24203049] [2020-10-27 14:02:22,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:02:22,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:02:22,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:02:22,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:02:22,327 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand 27 states. [2020-10-27 14:02:22,998 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-27 14:02:23,197 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2020-10-27 14:02:23,384 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-10-27 14:02:23,568 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-27 14:02:23,748 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-27 14:02:23,930 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-27 14:02:24,322 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-10-27 14:02:24,525 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-10-27 14:02:24,725 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2020-10-27 14:02:24,950 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-10-27 14:02:25,157 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-27 14:02:25,339 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-10-27 14:02:25,703 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-27 14:02:25,926 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-10-27 14:02:26,527 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2020-10-27 14:02:26,706 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-10-27 14:02:26,977 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2020-10-27 14:02:27,163 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-10-27 14:02:27,469 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2020-10-27 14:02:27,700 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2020-10-27 14:02:28,031 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 46 [2020-10-27 14:02:28,254 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2020-10-27 14:02:28,698 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2020-10-27 14:02:29,419 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-10-27 14:02:29,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:02:29,551 INFO L93 Difference]: Finished difference Result 131 states and 145 transitions. [2020-10-27 14:02:29,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 14:02:29,552 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 108 [2020-10-27 14:02:29,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:02:29,553 INFO L225 Difference]: With dead ends: 131 [2020-10-27 14:02:29,553 INFO L226 Difference]: Without dead ends: 128 [2020-10-27 14:02:29,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=464, Invalid=2958, Unknown=0, NotChecked=0, Total=3422 [2020-10-27 14:02:29,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-27 14:02:29,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 116. [2020-10-27 14:02:29,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 14:02:29,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 128 transitions. [2020-10-27 14:02:29,587 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 128 transitions. Word has length 108 [2020-10-27 14:02:29,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:02:29,587 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 128 transitions. [2020-10-27 14:02:29,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:02:29,587 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 128 transitions. [2020-10-27 14:02:29,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-27 14:02:29,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:02:29,589 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:02:29,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:02:29,589 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:02:29,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:02:29,590 INFO L82 PathProgramCache]: Analyzing trace with hash 247279221, now seen corresponding path program 11 times [2020-10-27 14:02:29,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:02:29,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240526562] [2020-10-27 14:02:29,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:02:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:29,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:29,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:32,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:34,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:34,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-27 14:02:34,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:02:34,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 14:02:34,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:34,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:02:34,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:02:34,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 14:02:34,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:34,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:02:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:34,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:34,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:34,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:02:34,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:34,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:34,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:34,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:02:34,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:34,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:02:34,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:34,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:02:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:34,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:34,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:34,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:34,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:34,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:02:34,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:34,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:34,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:34,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:34,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:34,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 14:02:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:34,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:34,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:34,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:34,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:34,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:02:34,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:34,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:34,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:34,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:34,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:34,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:02:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:34,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:34,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:34,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:34,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:34,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:34,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:34,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:34,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:34,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:34,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:34,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:02:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:34,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:34,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:34,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:34,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:34,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:34,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:34,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:34,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:34,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:34,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:34,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:02:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:34,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:34,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:34,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:34,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:34,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:34,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:34,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:34,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:02:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:34,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:34,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:34,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:34,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:34,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:34,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:34,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:34,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:34,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:34,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:34,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 14:02:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:34,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:34,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:34,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:34,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:34,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:02:34,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:34,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:02:34,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:02:34,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:02:34,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:34,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:02:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:34,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:34,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:34,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:34,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:34,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:34,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:34,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:02:34,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:02:34,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:02:34,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:34,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 14:02:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:34,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:34,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:34,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:34,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:34,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:02:34,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:02:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:02:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:02:34,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:34,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:02:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:34,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:34,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:34,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:34,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:34,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:02:34,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:34,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:02:34,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:02:34,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:02:34,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 46 proven. 77 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-27 14:02:34,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240526562] [2020-10-27 14:02:34,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:02:34,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:02:34,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573894140] [2020-10-27 14:02:34,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:02:34,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:02:34,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:02:34,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:02:34,979 INFO L87 Difference]: Start difference. First operand 116 states and 128 transitions. Second operand 18 states. [2020-10-27 14:02:36,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:02:36,005 INFO L93 Difference]: Finished difference Result 211 states and 226 transitions. [2020-10-27 14:02:36,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:02:36,006 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 110 [2020-10-27 14:02:36,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:02:36,008 INFO L225 Difference]: With dead ends: 211 [2020-10-27 14:02:36,008 INFO L226 Difference]: Without dead ends: 111 [2020-10-27 14:02:36,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:02:36,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-27 14:02:36,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 97. [2020-10-27 14:02:36,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-27 14:02:36,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2020-10-27 14:02:36,032 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 110 [2020-10-27 14:02:36,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:02:36,032 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2020-10-27 14:02:36,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:02:36,032 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2020-10-27 14:02:36,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 14:02:36,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:02:36,034 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:02:36,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:02:36,034 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:02:36,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:02:36,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1108137834, now seen corresponding path program 12 times [2020-10-27 14:02:36,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:02:36,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058381721] [2020-10-27 14:02:36,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:02:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:36,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:36,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:39,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:41,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:41,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 14:02:41,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:02:41,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 14:02:41,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:41,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:02:41,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:02:41,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-27 14:02:41,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:41,719 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 28 [2020-10-27 14:02:41,850 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 28 [2020-10-27 14:02:42,118 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 39 [2020-10-27 14:02:42,448 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 51 [2020-10-27 14:02:42,830 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 65 [2020-10-27 14:02:43,149 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 51 [2020-10-27 14:02:43,489 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 52 [2020-10-27 14:02:43,727 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2020-10-27 14:02:44,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:02:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:44,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:44,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:44,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:02:44,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:44,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:44,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:44,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:02:44,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:44,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:02:44,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:44,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:02:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:44,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:44,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:44,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:44,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:44,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:44,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:44,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:44,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:44,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:44,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:44,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 14:02:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:44,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:44,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:44,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:44,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:44,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:02:44,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:44,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:44,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:02:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:44,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:44,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:44,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:44,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:44,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:02:44,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:44,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:44,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:44,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:44,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:44,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:02:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:44,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:44,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:44,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:44,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:44,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:02:44,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:44,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:44,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:44,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:44,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:44,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:02:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:44,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:44,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:44,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:44,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:44,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:02:44,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:44,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:44,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:44,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:44,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:44,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:02:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:44,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:44,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:44,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:44,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:44,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:02:44,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:44,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:44,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:44,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:44,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:44,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:02:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:44,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:44,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:44,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:44,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:44,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:02:44,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:44,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:44,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:44,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:44,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:44,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:02:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:44,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:44,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:44,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:44,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:44,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:02:44,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:44,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:44,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:44,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:44,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:44,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 14:02:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:44,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:44,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:44,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:44,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:44,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:44,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:44,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:44,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:44,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:44,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:44,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:02:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:44,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:44,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:44,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:44,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:44,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:44,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:44,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:44,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:44,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:44,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:44,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-27 14:02:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:44,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:44,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:44,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:44,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:44,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:02:44,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:44,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:44,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:44,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:44,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:44,841 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 8 proven. 147 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-10-27 14:02:44,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058381721] [2020-10-27 14:02:44,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:02:44,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:02:44,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568198510] [2020-10-27 14:02:44,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:02:44,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:02:44,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:02:44,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:02:44,843 INFO L87 Difference]: Start difference. First operand 97 states and 105 transitions. Second operand 27 states. [2020-10-27 14:02:46,538 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 108 [2020-10-27 14:02:47,021 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 78 [2020-10-27 14:02:47,626 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2020-10-27 14:02:48,166 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 82 [2020-10-27 14:02:48,873 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 105 [2020-10-27 14:02:49,380 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 87 [2020-10-27 14:02:50,250 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 79 [2020-10-27 14:02:50,871 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 91 [2020-10-27 14:02:51,561 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 80 [2020-10-27 14:02:52,205 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 91 [2020-10-27 14:02:52,915 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 79 [2020-10-27 14:02:53,633 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 91 [2020-10-27 14:02:54,457 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 77 [2020-10-27 14:02:55,127 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 91 [2020-10-27 14:02:56,067 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 89 [2020-10-27 14:02:56,697 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 72 [2020-10-27 14:02:57,318 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 84 [2020-10-27 14:02:57,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:02:57,928 INFO L93 Difference]: Finished difference Result 152 states and 169 transitions. [2020-10-27 14:02:57,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 14:02:57,930 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 118 [2020-10-27 14:02:57,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:02:57,932 INFO L225 Difference]: With dead ends: 152 [2020-10-27 14:02:57,932 INFO L226 Difference]: Without dead ends: 149 [2020-10-27 14:02:57,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=344, Invalid=1912, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 14:02:57,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-27 14:02:57,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 140. [2020-10-27 14:02:57,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-27 14:02:57,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 155 transitions. [2020-10-27 14:02:57,979 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 155 transitions. Word has length 118 [2020-10-27 14:02:57,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:02:57,980 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 155 transitions. [2020-10-27 14:02:57,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:02:57,980 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 155 transitions. [2020-10-27 14:02:57,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-27 14:02:57,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:02:57,981 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:02:57,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:02:57,982 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:02:57,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:02:57,982 INFO L82 PathProgramCache]: Analyzing trace with hash 681534208, now seen corresponding path program 13 times [2020-10-27 14:02:57,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:02:57,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922406824] [2020-10-27 14:02:57,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:02:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:58,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:58,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:01,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:03,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:03,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 14:03:03,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:03:03,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:03:03,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:03:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:03:03,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-27 14:03:03,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:03,364 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-10-27 14:03:03,550 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-27 14:03:03,794 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-10-27 14:03:03,960 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-10-27 14:03:04,465 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-10-27 14:03:05,074 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2020-10-27 14:03:05,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:05,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:05,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:05,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:05,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:05,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:03:05,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:05,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:05,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:05,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:05,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:05,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:05,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:05,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:05,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:03:05,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:05,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:05,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:05,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:05,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:05,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 14:03:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:05,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:05,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:05,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:05,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:05,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:03:05,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:05,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:05,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:05,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:05,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:05,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:03:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:05,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:05,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:05,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:05,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:05,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:03:05,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:05,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:05,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:05,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:05,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:05,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:03:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:05,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:05,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:05,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:05,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:05,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:03:05,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:05,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:05,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:05,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:05,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:05,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:03:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:05,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:05,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:05,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:05,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:05,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:03:05,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:05,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:05,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:03:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:05,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:05,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:05,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:05,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:05,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:03:05,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:05,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:05,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:05,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:05,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:05,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:03:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:05,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:05,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:05,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:05,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:05,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:03:05,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:05,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:05,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:05,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:05,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:05,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:03:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:05,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:05,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:05,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:05,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:05,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:03:05,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:05,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:05,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:05,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:05,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:05,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 14:03:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:05,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:05,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:05,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:05,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:05,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:03:05,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:05,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:05,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:05,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:05,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:05,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:03:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:05,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:05,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:05,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:05,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:05,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:03:05,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:05,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:05,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:05,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:05,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:05,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-27 14:03:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:05,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:05,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:05,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:05,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:05,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:03:05,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:05,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:05,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:05,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:05,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:05,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 14:03:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:05,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:05,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:05,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:05,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:05,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:03:05,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:05,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:06,043 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 59 proven. 75 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-27 14:03:06,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922406824] [2020-10-27 14:03:06,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:06,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:03:06,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529848825] [2020-10-27 14:03:06,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:03:06,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:06,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:03:06,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:03:06,047 INFO L87 Difference]: Start difference. First operand 140 states and 155 transitions. Second operand 28 states. [2020-10-27 14:03:06,645 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 38 [2020-10-27 14:03:07,043 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-27 14:03:07,270 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2020-10-27 14:03:07,470 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-27 14:03:07,682 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2020-10-27 14:03:07,863 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-10-27 14:03:08,072 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-10-27 14:03:08,253 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-10-27 14:03:08,437 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-10-27 14:03:08,623 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-10-27 14:03:08,821 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-10-27 14:03:08,996 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-10-27 14:03:09,195 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-10-27 14:03:09,399 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2020-10-27 14:03:09,600 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2020-10-27 14:03:09,832 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-10-27 14:03:10,135 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2020-10-27 14:03:10,624 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-27 14:03:11,139 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-27 14:03:11,506 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-27 14:03:11,869 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2020-10-27 14:03:12,083 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2020-10-27 14:03:12,372 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2020-10-27 14:03:12,585 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2020-10-27 14:03:12,890 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2020-10-27 14:03:13,116 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2020-10-27 14:03:13,433 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2020-10-27 14:03:13,676 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2020-10-27 14:03:14,102 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2020-10-27 14:03:14,401 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2020-10-27 14:03:15,000 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 55 [2020-10-27 14:03:15,286 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-27 14:03:15,521 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-27 14:03:15,753 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-27 14:03:15,993 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-27 14:03:16,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:16,435 INFO L93 Difference]: Finished difference Result 208 states and 237 transitions. [2020-10-27 14:03:16,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-27 14:03:16,440 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 126 [2020-10-27 14:03:16,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:16,441 INFO L225 Difference]: With dead ends: 208 [2020-10-27 14:03:16,441 INFO L226 Difference]: Without dead ends: 175 [2020-10-27 14:03:16,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1367 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=982, Invalid=4130, Unknown=0, NotChecked=0, Total=5112 [2020-10-27 14:03:16,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-27 14:03:16,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 163. [2020-10-27 14:03:16,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-27 14:03:16,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 183 transitions. [2020-10-27 14:03:16,500 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 183 transitions. Word has length 126 [2020-10-27 14:03:16,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:16,500 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 183 transitions. [2020-10-27 14:03:16,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:03:16,500 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 183 transitions. [2020-10-27 14:03:16,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-27 14:03:16,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:16,502 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:16,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:03:16,503 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:16,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:16,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1499558327, now seen corresponding path program 14 times [2020-10-27 14:03:16,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:16,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043222031] [2020-10-27 14:03:16,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:16,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:16,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:17,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:21,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:21,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 14:03:21,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:03:21,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:03:21,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:21,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:03:21,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:03:21,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 14:03:21,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:21,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:21,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:21,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:21,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:21,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:21,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:03:21,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:21,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:21,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:21,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:21,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:21,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:21,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:21,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:21,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:21,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:21,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:03:21,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:21,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:21,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 14:03:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:21,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:21,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:22,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:22,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:22,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:03:22,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:22,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:22,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:22,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:22,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:22,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:03:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:22,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:22,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:22,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:22,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:22,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:03:22,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:22,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:22,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:22,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:22,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:22,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:03:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:22,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:22,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:22,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:22,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:22,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:03:22,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:22,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:22,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:22,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:22,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:22,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:03:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:22,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:22,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:22,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:22,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:22,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:03:22,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:22,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:22,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:03:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:22,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:22,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:22,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:22,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:22,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:03:22,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:22,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:22,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:03:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:22,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:22,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:22,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:22,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:22,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:03:22,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:22,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:22,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:03:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:22,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:22,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:22,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:22,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:22,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:03:22,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:22,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:22,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:22,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:22,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:22,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 14:03:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:22,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:22,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:22,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:22,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:22,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:03:22,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:22,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:22,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:03:22,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:22,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:22,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:03:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:22,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:22,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:22,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:22,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:22,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:03:22,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:22,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:22,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:03:22,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:22,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:22,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-27 14:03:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:22,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:22,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:22,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:22,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:22,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:03:22,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:22,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:22,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:03:22,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:22,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:22,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 14:03:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:22,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:22,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:22,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:22,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:22,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:03:22,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:22,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:22,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:03:22,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:22,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:22,075 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 74 proven. 103 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-27 14:03:22,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043222031] [2020-10-27 14:03:22,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:22,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:03:22,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524214454] [2020-10-27 14:03:22,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:03:22,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:22,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:03:22,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:03:22,077 INFO L87 Difference]: Start difference. First operand 163 states and 183 transitions. Second operand 20 states. [2020-10-27 14:03:23,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:23,987 INFO L93 Difference]: Finished difference Result 201 states and 219 transitions. [2020-10-27 14:03:23,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:03:23,989 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 126 [2020-10-27 14:03:23,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:23,991 INFO L225 Difference]: With dead ends: 201 [2020-10-27 14:03:23,991 INFO L226 Difference]: Without dead ends: 114 [2020-10-27 14:03:23,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:03:23,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-27 14:03:24,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 103. [2020-10-27 14:03:24,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-27 14:03:24,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2020-10-27 14:03:24,022 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 126 [2020-10-27 14:03:24,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:24,022 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2020-10-27 14:03:24,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:03:24,022 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2020-10-27 14:03:24,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-27 14:03:24,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:24,024 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:24,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:03:24,024 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:24,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:24,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1792327335, now seen corresponding path program 15 times [2020-10-27 14:03:24,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:24,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519485082] [2020-10-27 14:03:24,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:24,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:24,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:28,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:29,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:29,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 14:03:29,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:03:29,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5151 [2020-10-27 14:03:29,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:29,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 14:03:29,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:03:29,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-27 14:03:29,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0