/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-crafted/bAnd2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 18:58:35,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 18:58:35,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 18:58:35,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 18:58:35,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 18:58:35,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 18:58:35,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 18:58:35,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 18:58:35,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 18:58:35,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 18:58:35,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 18:58:35,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 18:58:35,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 18:58:35,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 18:58:35,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 18:58:35,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 18:58:35,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 18:58:35,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 18:58:35,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 18:58:35,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 18:58:35,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 18:58:35,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 18:58:35,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 18:58:35,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 18:58:35,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 18:58:35,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 18:58:35,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 18:58:35,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 18:58:35,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 18:58:35,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 18:58:35,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 18:58:35,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 18:58:35,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 18:58:35,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 18:58:35,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 18:58:35,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 18:58:35,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 18:58:35,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 18:58:35,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 18:58:35,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 18:58:35,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 18:58:35,643 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 18:58:35,698 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 18:58:35,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 18:58:35,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 18:58:35,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 18:58:35,701 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 18:58:35,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 18:58:35,702 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 18:58:35,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 18:58:35,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 18:58:35,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 18:58:35,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 18:58:35,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 18:58:35,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 18:58:35,704 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 18:58:35,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 18:58:35,705 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 18:58:35,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 18:58:35,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 18:58:35,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 18:58:35,706 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 18:58:35,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 18:58:35,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 18:58:35,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 18:58:35,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 18:58:35,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 18:58:35,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 18:58:35,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 18:58:35,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 18:58:35,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 18:58:35,708 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 18:58:36,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 18:58:36,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 18:58:36,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 18:58:36,097 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 18:58:36,098 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 18:58:36,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bAnd2.i [2020-10-26 18:58:36,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35dca5b60/b40f10e84af4483b9219c46950a74d56/FLAG50ab53e7a [2020-10-26 18:58:36,761 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 18:58:36,761 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/bAnd2.i [2020-10-26 18:58:36,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35dca5b60/b40f10e84af4483b9219c46950a74d56/FLAG50ab53e7a [2020-10-26 18:58:37,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35dca5b60/b40f10e84af4483b9219c46950a74d56 [2020-10-26 18:58:37,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 18:58:37,124 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 18:58:37,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 18:58:37,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 18:58:37,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 18:58:37,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 06:58:37" (1/1) ... [2020-10-26 18:58:37,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c828bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:58:37, skipping insertion in model container [2020-10-26 18:58:37,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 06:58:37" (1/1) ... [2020-10-26 18:58:37,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 18:58:37,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 18:58:37,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 18:58:37,365 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 18:58:37,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 18:58:37,407 INFO L208 MainTranslator]: Completed translation [2020-10-26 18:58:37,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:58:37 WrapperNode [2020-10-26 18:58:37,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 18:58:37,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 18:58:37,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 18:58:37,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 18:58:37,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:58:37" (1/1) ... [2020-10-26 18:58:37,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:58:37" (1/1) ... [2020-10-26 18:58:37,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:58:37" (1/1) ... [2020-10-26 18:58:37,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:58:37" (1/1) ... [2020-10-26 18:58:37,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:58:37" (1/1) ... [2020-10-26 18:58:37,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:58:37" (1/1) ... [2020-10-26 18:58:37,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:58:37" (1/1) ... [2020-10-26 18:58:37,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 18:58:37,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 18:58:37,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 18:58:37,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 18:58:37,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:58:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 18:58:37,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 18:58:37,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 18:58:37,558 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 18:58:37,558 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2020-10-26 18:58:37,558 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 18:58:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 18:58:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 18:58:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-26 18:58:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-26 18:58:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 18:58:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 18:58:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 18:58:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2020-10-26 18:58:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 18:58:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 18:58:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 18:58:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 18:58:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 18:58:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 18:58:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 18:58:38,206 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 18:58:38,206 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-26 18:58:38,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 06:58:38 BoogieIcfgContainer [2020-10-26 18:58:38,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 18:58:38,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 18:58:38,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 18:58:38,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 18:58:38,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 06:58:37" (1/3) ... [2020-10-26 18:58:38,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc8ca2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 06:58:38, skipping insertion in model container [2020-10-26 18:58:38,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:58:37" (2/3) ... [2020-10-26 18:58:38,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc8ca2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 06:58:38, skipping insertion in model container [2020-10-26 18:58:38,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 06:58:38" (3/3) ... [2020-10-26 18:58:38,217 INFO L111 eAbstractionObserver]: Analyzing ICFG bAnd2.i [2020-10-26 18:58:38,229 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 18:58:38,235 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 18:58:38,248 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 18:58:38,276 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 18:58:38,276 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 18:58:38,276 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 18:58:38,276 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 18:58:38,276 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 18:58:38,277 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 18:58:38,277 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 18:58:38,277 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 18:58:38,294 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-26 18:58:38,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-26 18:58:38,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 18:58:38,302 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 18:58:38,303 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 18:58:38,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 18:58:38,309 INFO L82 PathProgramCache]: Analyzing trace with hash 585288593, now seen corresponding path program 1 times [2020-10-26 18:58:38,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 18:58:38,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172115432] [2020-10-26 18:58:38,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 18:58:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:38,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:38,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:38,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:38,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:38,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:39,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:39,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-26 18:58:39,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 18:58:39,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-10-26 18:58:39,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:39,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 18:58:39,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 18:58:39,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 18:58:39,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 18:58:39,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 18:58:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:39,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:39,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:39,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 18:58:39,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 18:58:39,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 18:58:39,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:39,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 18:58:39,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 18:58:39,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 18:58:39,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 18:58:39,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 18:58:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:39,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:39,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:39,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:39,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 18:58:39,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:58:39,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 18:58:39,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:39,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 18:58:39,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-26 18:58:39,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 18:58:39,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:58:39,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-26 18:58:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:39,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:39,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:39,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:39,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 18:58:39,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:58:39,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 18:58:39,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:39,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 18:58:39,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-26 18:58:39,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 18:58:39,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 18:58:39,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-26 18:58:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:39,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:39,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:39,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:39,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 18:58:39,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:58:39,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 18:58:39,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:39,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 18:58:39,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-26 18:58:39,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 18:58:39,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:58:39,289 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-26 18:58:39,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172115432] [2020-10-26 18:58:39,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 18:58:39,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 18:58:39,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150038462] [2020-10-26 18:58:39,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 18:58:39,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 18:58:39,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 18:58:39,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 18:58:39,316 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-26 18:58:39,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 18:58:39,429 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2020-10-26 18:58:39,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 18:58:39,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-26 18:58:39,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 18:58:39,439 INFO L225 Difference]: With dead ends: 60 [2020-10-26 18:58:39,439 INFO L226 Difference]: Without dead ends: 28 [2020-10-26 18:58:39,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 18:58:39,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-26 18:58:39,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-26 18:58:39,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-26 18:58:39,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-26 18:58:39,488 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2020-10-26 18:58:39,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 18:58:39,488 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-26 18:58:39,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 18:58:39,488 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-26 18:58:39,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-26 18:58:39,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 18:58:39,491 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 18:58:39,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 18:58:39,492 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 18:58:39,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 18:58:39,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1339353745, now seen corresponding path program 1 times [2020-10-26 18:58:39,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 18:58:39,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389462803] [2020-10-26 18:58:39,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 18:58:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:39,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:39,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:39,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:39,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:39,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:40,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:40,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-26 18:58:40,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 18:58:40,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1311 [2020-10-26 18:58:40,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:40,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 18:58:40,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 18:58:40,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 18:58:40,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:58:40,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 18:58:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:40,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:40,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:40,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 18:58:40,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 18:58:40,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 18:58:40,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:40,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 18:58:40,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 18:58:40,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 18:58:40,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 18:58:40,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 18:58:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:40,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:40,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:40,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:40,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 18:58:40,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:58:40,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 18:58:40,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:40,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 18:58:40,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:58:40,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 18:58:40,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:58:40,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-26 18:58:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:40,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:40,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:40,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:40,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 18:58:40,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:58:40,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 18:58:40,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:40,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 18:58:40,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:58:40,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 18:58:40,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:58:40,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-26 18:58:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:40,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:41,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:41,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:41,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 18:58:41,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:58:41,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 18:58:41,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:41,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 18:58:41,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:58:41,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 18:58:41,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:58:41,019 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-26 18:58:41,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389462803] [2020-10-26 18:58:41,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 18:58:41,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 18:58:41,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645997298] [2020-10-26 18:58:41,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 18:58:41,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 18:58:41,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 18:58:41,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 18:58:41,026 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-10-26 18:58:41,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 18:58:41,226 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2020-10-26 18:58:41,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 18:58:41,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-26 18:58:41,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 18:58:41,227 INFO L225 Difference]: With dead ends: 52 [2020-10-26 18:58:41,228 INFO L226 Difference]: Without dead ends: 32 [2020-10-26 18:58:41,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 18:58:41,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-26 18:58:41,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-26 18:58:41,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-26 18:58:41,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-26 18:58:41,251 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 34 [2020-10-26 18:58:41,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 18:58:41,252 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-26 18:58:41,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 18:58:41,252 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-26 18:58:41,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-26 18:58:41,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 18:58:41,255 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 18:58:41,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 18:58:41,256 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 18:58:41,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 18:58:41,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1648388849, now seen corresponding path program 1 times [2020-10-26 18:58:41,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 18:58:41,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683252226] [2020-10-26 18:58:41,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 18:58:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:41,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:41,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:41,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:41,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:41,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:45,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:45,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-26 18:58:45,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 18:58:45,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4278 [2020-10-26 18:58:45,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 18:58:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 18:58:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-26 18:58:45,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:58:45,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 18:58:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:45,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:45,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:45,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 18:58:45,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 18:58:45,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 18:58:45,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:45,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 18:58:45,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 18:58:45,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 18:58:45,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:58:45,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-26 18:58:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:45,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:45,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:45,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:45,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 18:58:45,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:58:45,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 18:58:45,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:45,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 18:58:45,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:58:45,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-26 18:58:45,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:58:45,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-26 18:58:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:45,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:45,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:45,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:45,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 18:58:45,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:58:45,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 18:58:45,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:45,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 18:58:45,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:58:45,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-26 18:58:45,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:58:45,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 18:58:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:45,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:45,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:45,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:45,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 18:58:45,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:58:45,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 18:58:45,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:45,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 18:58:45,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:58:45,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-26 18:58:45,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:58:45,745 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-26 18:58:45,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683252226] [2020-10-26 18:58:45,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 18:58:45,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 18:58:45,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802076432] [2020-10-26 18:58:45,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 18:58:45,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 18:58:45,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 18:58:45,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-26 18:58:45,748 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-10-26 18:58:45,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 18:58:45,947 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2020-10-26 18:58:45,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 18:58:45,948 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-26 18:58:45,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 18:58:45,949 INFO L225 Difference]: With dead ends: 57 [2020-10-26 18:58:45,949 INFO L226 Difference]: Without dead ends: 36 [2020-10-26 18:58:45,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-26 18:58:45,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-26 18:58:45,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-26 18:58:45,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-26 18:58:45,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-26 18:58:45,959 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 42 [2020-10-26 18:58:45,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 18:58:45,959 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-26 18:58:45,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 18:58:45,959 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-26 18:58:45,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-26 18:58:45,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 18:58:45,961 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 18:58:45,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 18:58:45,961 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 18:58:45,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 18:58:45,962 INFO L82 PathProgramCache]: Analyzing trace with hash 60514641, now seen corresponding path program 2 times [2020-10-26 18:58:45,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 18:58:45,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611963912] [2020-10-26 18:58:45,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 18:58:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:46,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:46,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:46,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:46,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:46,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:50,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:50,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 18:58:50,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 18:58:50,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 18:58:50,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:50,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 18:58:50,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 18:58:50,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 18:58:50,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:58:51,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 18:58:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:51,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:51,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:51,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 18:58:51,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 18:58:51,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 18:58:51,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:51,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 18:58:51,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 18:58:51,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 18:58:51,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:58:51,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-26 18:58:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:51,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:51,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:51,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:51,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 18:58:51,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:58:51,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 18:58:51,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:51,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 18:58:51,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:58:51,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 18:58:51,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:58:51,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-26 18:58:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:51,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:51,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:51,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:51,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 18:58:51,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:58:51,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 18:58:51,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:51,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 18:58:51,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:58:51,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 18:58:51,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:58:51,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-26 18:58:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:51,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:51,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:51,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:51,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 18:58:51,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:58:51,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 18:58:51,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 18:58:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:58:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 18:58:51,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:58:51,202 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-26 18:58:51,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611963912] [2020-10-26 18:58:51,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 18:58:51,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 18:58:51,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356990736] [2020-10-26 18:58:51,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 18:58:51,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 18:58:51,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 18:58:51,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-26 18:58:51,205 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 9 states. [2020-10-26 18:58:51,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 18:58:51,456 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-10-26 18:58:51,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 18:58:51,457 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2020-10-26 18:58:51,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 18:58:51,458 INFO L225 Difference]: With dead ends: 63 [2020-10-26 18:58:51,458 INFO L226 Difference]: Without dead ends: 40 [2020-10-26 18:58:51,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-26 18:58:51,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-26 18:58:51,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-10-26 18:58:51,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-26 18:58:51,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-10-26 18:58:51,466 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 50 [2020-10-26 18:58:51,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 18:58:51,467 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-10-26 18:58:51,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 18:58:51,467 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-10-26 18:58:51,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-26 18:58:51,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 18:58:51,468 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 18:58:51,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 18:58:51,469 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 18:58:51,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 18:58:51,469 INFO L82 PathProgramCache]: Analyzing trace with hash 2107559345, now seen corresponding path program 3 times [2020-10-26 18:58:51,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 18:58:51,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019338534] [2020-10-26 18:58:51,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 18:58:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:51,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:51,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:51,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:51,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:53,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:56,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:56,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-26 18:58:56,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 18:58:56,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-26 18:58:56,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:56,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 18:58:56,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 18:58:56,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-26 18:58:56,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:58:56,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 18:58:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:56,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:56,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:56,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 18:58:56,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 18:58:56,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 18:58:56,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 18:58:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 18:58:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 18:58:56,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:58:56,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-26 18:58:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:56,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:56,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:56,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:56,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 18:58:56,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:58:56,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 18:58:56,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:56,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 18:58:56,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:58:56,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-26 18:58:56,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:58:56,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-26 18:58:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:56,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:56,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:56,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:56,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 18:58:56,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:58:56,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 18:58:56,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:56,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 18:58:56,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:58:56,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-26 18:58:56,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:58:56,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 18:58:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:56,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:56,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:56,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:58:56,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 18:58:56,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:58:56,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 18:58:56,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:58:56,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 18:58:56,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:58:56,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-26 18:58:56,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:58:56,740 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 27 proven. 63 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-26 18:58:56,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019338534] [2020-10-26 18:58:56,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 18:58:56,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 18:58:56,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890020229] [2020-10-26 18:58:56,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 18:58:56,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 18:58:56,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 18:58:56,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-26 18:58:56,742 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 11 states. [2020-10-26 18:58:57,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 18:58:57,020 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2020-10-26 18:58:57,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 18:58:57,021 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-10-26 18:58:57,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 18:58:57,022 INFO L225 Difference]: With dead ends: 69 [2020-10-26 18:58:57,022 INFO L226 Difference]: Without dead ends: 44 [2020-10-26 18:58:57,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-26 18:58:57,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-26 18:58:57,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-10-26 18:58:57,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-26 18:58:57,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-26 18:58:57,032 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 58 [2020-10-26 18:58:57,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 18:58:57,032 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-26 18:58:57,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 18:58:57,032 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-26 18:58:57,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-26 18:58:57,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 18:58:57,034 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 18:58:57,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 18:58:57,034 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 18:58:57,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 18:58:57,035 INFO L82 PathProgramCache]: Analyzing trace with hash -844910575, now seen corresponding path program 4 times [2020-10-26 18:58:57,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 18:58:57,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379775666] [2020-10-26 18:58:57,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 18:58:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:58:57,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:57,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:57,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:57,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:58:59,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:02,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:02,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 18:59:02,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 18:59:02,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-26 18:59:02,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:02,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 18:59:02,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 18:59:02,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 18:59:02,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:02,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 18:59:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:02,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:02,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:02,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 18:59:02,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 18:59:02,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 18:59:02,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:02,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 18:59:02,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 18:59:02,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 18:59:02,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:02,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-26 18:59:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:02,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:02,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:02,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:02,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 18:59:02,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:02,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 18:59:02,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:02,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 18:59:02,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:02,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 18:59:02,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:02,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-26 18:59:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:02,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:02,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:02,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:02,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 18:59:02,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:02,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 18:59:02,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:02,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 18:59:02,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:02,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 18:59:02,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:02,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-26 18:59:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:02,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:02,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:02,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:02,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 18:59:02,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:02,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 18:59:02,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 18:59:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 18:59:02,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:02,367 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 48 proven. 112 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-26 18:59:02,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379775666] [2020-10-26 18:59:02,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 18:59:02,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 18:59:02,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633038600] [2020-10-26 18:59:02,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 18:59:02,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 18:59:02,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 18:59:02,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-26 18:59:02,370 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 13 states. [2020-10-26 18:59:02,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 18:59:02,736 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2020-10-26 18:59:02,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 18:59:02,736 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-10-26 18:59:02,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 18:59:02,737 INFO L225 Difference]: With dead ends: 75 [2020-10-26 18:59:02,737 INFO L226 Difference]: Without dead ends: 48 [2020-10-26 18:59:02,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-26 18:59:02,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-26 18:59:02,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-26 18:59:02,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-26 18:59:02,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-26 18:59:02,745 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 66 [2020-10-26 18:59:02,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 18:59:02,746 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-26 18:59:02,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 18:59:02,746 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-26 18:59:02,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-26 18:59:02,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 18:59:02,747 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 18:59:02,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 18:59:02,748 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 18:59:02,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 18:59:02,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1264383887, now seen corresponding path program 5 times [2020-10-26 18:59:02,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 18:59:02,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924052386] [2020-10-26 18:59:02,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 18:59:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:02,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:02,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:02,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:02,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:06,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:07,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:07,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 18:59:07,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 18:59:07,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 18:59:07,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:07,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 18:59:07,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 18:59:07,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 18:59:07,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:07,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 18:59:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:07,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:07,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:07,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 18:59:07,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 18:59:07,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 18:59:07,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:07,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 18:59:07,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 18:59:07,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 18:59:07,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:07,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-26 18:59:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:07,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:07,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:07,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:07,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 18:59:07,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:07,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 18:59:07,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:07,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 18:59:07,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:07,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 18:59:07,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:07,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 18:59:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:07,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:07,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:08,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:08,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 18:59:08,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:08,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 18:59:08,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:08,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 18:59:08,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:08,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 18:59:08,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:08,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-26 18:59:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:08,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:08,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:08,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:08,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 18:59:08,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:08,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 18:59:08,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:08,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 18:59:08,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:08,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 18:59:08,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:08,078 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 75 proven. 175 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-26 18:59:08,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924052386] [2020-10-26 18:59:08,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 18:59:08,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-26 18:59:08,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604317015] [2020-10-26 18:59:08,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-26 18:59:08,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 18:59:08,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-26 18:59:08,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-26 18:59:08,082 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 15 states. [2020-10-26 18:59:08,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 18:59:08,513 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-10-26 18:59:08,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 18:59:08,513 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 74 [2020-10-26 18:59:08,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 18:59:08,514 INFO L225 Difference]: With dead ends: 81 [2020-10-26 18:59:08,514 INFO L226 Difference]: Without dead ends: 52 [2020-10-26 18:59:08,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-26 18:59:08,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-26 18:59:08,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-26 18:59:08,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-26 18:59:08,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-26 18:59:08,522 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 74 [2020-10-26 18:59:08,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 18:59:08,522 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-26 18:59:08,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-26 18:59:08,522 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-26 18:59:08,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-26 18:59:08,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 18:59:08,524 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 18:59:08,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 18:59:08,524 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 18:59:08,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 18:59:08,525 INFO L82 PathProgramCache]: Analyzing trace with hash -952772911, now seen corresponding path program 6 times [2020-10-26 18:59:08,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 18:59:08,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071591876] [2020-10-26 18:59:08,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 18:59:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:08,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:08,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:08,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:08,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:13,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:13,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:13,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 18:59:13,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 18:59:13,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 18:59:13,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:13,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 18:59:13,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 18:59:13,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 18:59:13,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:13,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 18:59:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:13,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:13,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:13,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 18:59:13,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 18:59:13,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 18:59:13,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 18:59:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 18:59:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 18:59:13,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:13,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 18:59:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:13,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:13,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:13,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:13,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 18:59:13,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:13,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 18:59:13,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:13,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 18:59:13,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:13,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 18:59:13,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:13,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 18:59:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:13,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:13,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:13,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:13,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 18:59:13,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:13,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 18:59:13,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:13,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 18:59:13,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:13,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 18:59:13,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:13,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 18:59:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:13,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:13,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:13,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:13,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 18:59:13,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:13,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 18:59:13,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:13,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 18:59:13,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:13,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 18:59:13,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 108 proven. 252 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-26 18:59:13,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071591876] [2020-10-26 18:59:13,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 18:59:13,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-26 18:59:13,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209845029] [2020-10-26 18:59:13,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-26 18:59:13,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 18:59:13,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-26 18:59:13,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-26 18:59:13,919 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 17 states. [2020-10-26 18:59:14,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 18:59:14,469 INFO L93 Difference]: Finished difference Result 87 states and 99 transitions. [2020-10-26 18:59:14,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 18:59:14,469 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 82 [2020-10-26 18:59:14,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 18:59:14,470 INFO L225 Difference]: With dead ends: 87 [2020-10-26 18:59:14,470 INFO L226 Difference]: Without dead ends: 56 [2020-10-26 18:59:14,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2020-10-26 18:59:14,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-26 18:59:14,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-10-26 18:59:14,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-26 18:59:14,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-26 18:59:14,480 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 82 [2020-10-26 18:59:14,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 18:59:14,480 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-26 18:59:14,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-26 18:59:14,480 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-26 18:59:14,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-26 18:59:14,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 18:59:14,482 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 18:59:14,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 18:59:14,482 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 18:59:14,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 18:59:14,482 INFO L82 PathProgramCache]: Analyzing trace with hash 2106923825, now seen corresponding path program 7 times [2020-10-26 18:59:14,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 18:59:14,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411699775] [2020-10-26 18:59:14,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 18:59:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:14,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:14,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:14,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:14,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:19,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:19,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-26 18:59:19,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 18:59:19,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 18:59:19,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 18:59:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 18:59:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 18:59:19,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:19,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 18:59:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:19,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:19,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:19,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 18:59:19,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 18:59:19,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 18:59:19,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:19,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 18:59:19,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 18:59:19,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 18:59:19,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:19,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-26 18:59:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:19,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:19,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:19,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:19,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-26 18:59:19,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:19,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 18:59:19,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:19,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 18:59:19,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:19,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 18:59:19,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:19,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 18:59:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:19,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:19,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:19,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:19,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-26 18:59:19,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:19,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 18:59:19,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:19,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 18:59:19,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:19,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 18:59:19,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:19,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-26 18:59:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:19,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:19,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:19,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:19,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-26 18:59:19,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:19,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 18:59:19,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:19,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 18:59:19,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:19,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 18:59:19,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:19,964 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 147 proven. 343 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-26 18:59:19,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411699775] [2020-10-26 18:59:19,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 18:59:19,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-26 18:59:19,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596720956] [2020-10-26 18:59:19,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-26 18:59:19,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 18:59:19,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-26 18:59:19,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-10-26 18:59:19,974 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 19 states. [2020-10-26 18:59:20,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 18:59:20,501 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2020-10-26 18:59:20,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 18:59:20,502 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 90 [2020-10-26 18:59:20,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 18:59:20,503 INFO L225 Difference]: With dead ends: 93 [2020-10-26 18:59:20,503 INFO L226 Difference]: Without dead ends: 60 [2020-10-26 18:59:20,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2020-10-26 18:59:20,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-26 18:59:20,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-26 18:59:20,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-26 18:59:20,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-10-26 18:59:20,511 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 90 [2020-10-26 18:59:20,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 18:59:20,512 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-10-26 18:59:20,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-26 18:59:20,512 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-10-26 18:59:20,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-26 18:59:20,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 18:59:20,513 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 18:59:20,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 18:59:20,513 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 18:59:20,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 18:59:20,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1134155153, now seen corresponding path program 8 times [2020-10-26 18:59:20,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 18:59:20,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424614708] [2020-10-26 18:59:20,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 18:59:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:20,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:20,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:20,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:20,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:25,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:25,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 18:59:25,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 18:59:25,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 18:59:25,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:25,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 18:59:25,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 18:59:25,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 18:59:25,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:25,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 18:59:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:25,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:25,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:25,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 18:59:25,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 18:59:25,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 18:59:25,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:25,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 18:59:25,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 18:59:25,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 18:59:25,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:25,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-26 18:59:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:25,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:25,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:25,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:25,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-26 18:59:25,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:25,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 18:59:25,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:25,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 18:59:25,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:25,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 18:59:25,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:25,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-26 18:59:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:25,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:25,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:25,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:25,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-26 18:59:25,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:25,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 18:59:25,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:25,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 18:59:25,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:25,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 18:59:25,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:25,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-26 18:59:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:25,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:25,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:25,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:25,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-26 18:59:25,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:25,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 18:59:25,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:25,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 18:59:25,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:25,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 18:59:25,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 192 proven. 448 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-26 18:59:25,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424614708] [2020-10-26 18:59:25,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 18:59:25,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-26 18:59:25,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462011025] [2020-10-26 18:59:25,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-26 18:59:25,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 18:59:25,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-26 18:59:25,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-26 18:59:25,961 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 21 states. [2020-10-26 18:59:26,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 18:59:26,605 INFO L93 Difference]: Finished difference Result 99 states and 111 transitions. [2020-10-26 18:59:26,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-26 18:59:26,606 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 98 [2020-10-26 18:59:26,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 18:59:26,607 INFO L225 Difference]: With dead ends: 99 [2020-10-26 18:59:26,607 INFO L226 Difference]: Without dead ends: 64 [2020-10-26 18:59:26,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2020-10-26 18:59:26,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-26 18:59:26,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2020-10-26 18:59:26,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-26 18:59:26,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-10-26 18:59:26,616 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 98 [2020-10-26 18:59:26,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 18:59:26,617 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-10-26 18:59:26,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-26 18:59:26,617 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-10-26 18:59:26,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-26 18:59:26,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 18:59:26,618 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 18:59:26,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 18:59:26,619 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 18:59:26,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 18:59:26,620 INFO L82 PathProgramCache]: Analyzing trace with hash -2000878095, now seen corresponding path program 9 times [2020-10-26 18:59:26,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 18:59:26,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772163069] [2020-10-26 18:59:26,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 18:59:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:26,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:26,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:26,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:26,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:31,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:31,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-26 18:59:31,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 18:59:31,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 18:59:31,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:31,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 18:59:31,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 18:59:31,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 18:59:31,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:31,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 18:59:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:31,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:31,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:31,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 18:59:31,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 18:59:31,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 18:59:31,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:31,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 18:59:31,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 18:59:31,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 18:59:31,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:31,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-26 18:59:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:31,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:31,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:31,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:31,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-26 18:59:31,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:31,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 18:59:31,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:31,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 18:59:31,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:31,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 18:59:31,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:32,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 18:59:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:32,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:32,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:32,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:32,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-26 18:59:32,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:32,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 18:59:32,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:32,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 18:59:32,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:32,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 18:59:32,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:32,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-26 18:59:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:32,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:32,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:32,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:32,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-26 18:59:32,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:32,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 18:59:32,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:32,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 18:59:32,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:32,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 18:59:32,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:32,161 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 243 proven. 567 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-26 18:59:32,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772163069] [2020-10-26 18:59:32,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 18:59:32,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-26 18:59:32,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804180372] [2020-10-26 18:59:32,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-26 18:59:32,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 18:59:32,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-26 18:59:32,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-10-26 18:59:32,164 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 23 states. [2020-10-26 18:59:32,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 18:59:32,892 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2020-10-26 18:59:32,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 18:59:32,892 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 106 [2020-10-26 18:59:32,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 18:59:32,894 INFO L225 Difference]: With dead ends: 105 [2020-10-26 18:59:32,894 INFO L226 Difference]: Without dead ends: 68 [2020-10-26 18:59:32,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2020-10-26 18:59:32,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-26 18:59:32,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-10-26 18:59:32,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-26 18:59:32,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-10-26 18:59:32,905 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 106 [2020-10-26 18:59:32,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 18:59:32,905 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-10-26 18:59:32,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-26 18:59:32,905 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-10-26 18:59:32,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-26 18:59:32,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 18:59:32,907 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 18:59:32,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 18:59:32,907 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 18:59:32,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 18:59:32,908 INFO L82 PathProgramCache]: Analyzing trace with hash -803754927, now seen corresponding path program 10 times [2020-10-26 18:59:32,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 18:59:32,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875175480] [2020-10-26 18:59:32,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 18:59:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:32,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:32,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:32,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:33,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:37,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:37,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-26 18:59:37,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 18:59:37,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 18:59:37,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 18:59:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 18:59:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 18:59:37,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:38,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 18:59:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:38,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:38,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:38,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 18:59:38,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 18:59:38,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 18:59:38,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 18:59:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 18:59:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 18:59:38,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:38,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 18:59:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:38,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:38,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:38,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:38,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-26 18:59:38,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:38,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 18:59:38,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:38,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 18:59:38,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:38,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 18:59:38,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:38,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 18:59:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:38,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:38,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:38,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:38,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-26 18:59:38,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:38,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 18:59:38,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:38,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 18:59:38,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:38,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 18:59:38,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:38,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-26 18:59:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:38,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:38,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:38,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:38,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-26 18:59:38,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:38,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 18:59:38,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:38,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 18:59:38,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:38,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 18:59:38,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:38,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 300 proven. 700 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-26 18:59:38,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875175480] [2020-10-26 18:59:38,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 18:59:38,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-26 18:59:38,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910577980] [2020-10-26 18:59:38,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-26 18:59:38,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 18:59:38,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-26 18:59:38,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-10-26 18:59:38,693 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 25 states. [2020-10-26 18:59:39,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 18:59:39,369 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2020-10-26 18:59:39,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-26 18:59:39,369 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 114 [2020-10-26 18:59:39,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 18:59:39,370 INFO L225 Difference]: With dead ends: 111 [2020-10-26 18:59:39,370 INFO L226 Difference]: Without dead ends: 72 [2020-10-26 18:59:39,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2020-10-26 18:59:39,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-26 18:59:39,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-26 18:59:39,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-26 18:59:39,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-10-26 18:59:39,380 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 114 [2020-10-26 18:59:39,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 18:59:39,380 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-10-26 18:59:39,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-26 18:59:39,380 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-10-26 18:59:39,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-26 18:59:39,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 18:59:39,382 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 18:59:39,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 18:59:39,382 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 18:59:39,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 18:59:39,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1067267919, now seen corresponding path program 11 times [2020-10-26 18:59:39,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 18:59:39,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839348198] [2020-10-26 18:59:39,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 18:59:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:39,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:39,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:39,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:39,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:44,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:44,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 18:59:44,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 18:59:44,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 18:59:44,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:44,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-26 18:59:44,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 18:59:44,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-26 18:59:44,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:44,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 18:59:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:44,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:44,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:44,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 18:59:44,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 18:59:44,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 18:59:44,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:44,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 18:59:44,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 18:59:44,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 18:59:44,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:44,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 18:59:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:44,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:44,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:44,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:44,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-26 18:59:44,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:44,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 18:59:44,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:44,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-26 18:59:44,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:44,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-26 18:59:44,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:44,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-26 18:59:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:44,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:44,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:44,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:44,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-26 18:59:44,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:44,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 18:59:44,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:44,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-26 18:59:44,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:44,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-26 18:59:44,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:44,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-26 18:59:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:44,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:45,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:45,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:45,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-26 18:59:45,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:45,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 18:59:45,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:45,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-26 18:59:45,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:45,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-26 18:59:45,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:45,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 363 proven. 847 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-26 18:59:45,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839348198] [2020-10-26 18:59:45,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 18:59:45,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-26 18:59:45,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349724847] [2020-10-26 18:59:45,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-26 18:59:45,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 18:59:45,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-26 18:59:45,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2020-10-26 18:59:45,065 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 27 states. [2020-10-26 18:59:45,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 18:59:45,890 INFO L93 Difference]: Finished difference Result 117 states and 129 transitions. [2020-10-26 18:59:45,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-26 18:59:45,891 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 122 [2020-10-26 18:59:45,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 18:59:45,892 INFO L225 Difference]: With dead ends: 117 [2020-10-26 18:59:45,892 INFO L226 Difference]: Without dead ends: 76 [2020-10-26 18:59:45,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=363, Invalid=1119, Unknown=0, NotChecked=0, Total=1482 [2020-10-26 18:59:45,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-26 18:59:45,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-10-26 18:59:45,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-26 18:59:45,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-10-26 18:59:45,902 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 122 [2020-10-26 18:59:45,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 18:59:45,903 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-10-26 18:59:45,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-26 18:59:45,903 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-10-26 18:59:45,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-26 18:59:45,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 18:59:45,905 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 18:59:45,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 18:59:45,905 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 18:59:45,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 18:59:45,906 INFO L82 PathProgramCache]: Analyzing trace with hash 871848721, now seen corresponding path program 12 times [2020-10-26 18:59:45,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 18:59:45,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859137924] [2020-10-26 18:59:45,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 18:59:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:45,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:45,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:45,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:46,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:50,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:50,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-26 18:59:50,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 18:59:50,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 18:59:50,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:50,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 18:59:50,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 18:59:50,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-26 18:59:50,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:51,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 18:59:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:51,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:51,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:51,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 18:59:51,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 18:59:51,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 18:59:51,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:51,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 18:59:51,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 18:59:51,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 18:59:51,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:51,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-26 18:59:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:51,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:51,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:51,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:51,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-26 18:59:51,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:51,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 18:59:51,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:51,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 18:59:51,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:51,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-26 18:59:51,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:51,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-26 18:59:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:51,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:51,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:51,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:51,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-26 18:59:51,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:51,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 18:59:51,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:51,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 18:59:51,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:51,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-26 18:59:51,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:51,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-26 18:59:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:51,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:51,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:51,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:51,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-26 18:59:51,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:51,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 18:59:51,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:51,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 18:59:51,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:51,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-26 18:59:51,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:51,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1527 backedges. 432 proven. 1008 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-26 18:59:51,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859137924] [2020-10-26 18:59:51,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 18:59:51,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-26 18:59:51,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992227475] [2020-10-26 18:59:51,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-26 18:59:51,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 18:59:51,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-26 18:59:51,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=601, Unknown=0, NotChecked=0, Total=812 [2020-10-26 18:59:51,640 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 29 states. [2020-10-26 18:59:52,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 18:59:52,590 INFO L93 Difference]: Finished difference Result 123 states and 135 transitions. [2020-10-26 18:59:52,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-26 18:59:52,590 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 130 [2020-10-26 18:59:52,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 18:59:52,591 INFO L225 Difference]: With dead ends: 123 [2020-10-26 18:59:52,592 INFO L226 Difference]: Without dead ends: 80 [2020-10-26 18:59:52,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=419, Invalid=1303, Unknown=0, NotChecked=0, Total=1722 [2020-10-26 18:59:52,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-26 18:59:52,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-10-26 18:59:52,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-26 18:59:52,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2020-10-26 18:59:52,600 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 130 [2020-10-26 18:59:52,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 18:59:52,601 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2020-10-26 18:59:52,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-26 18:59:52,601 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-10-26 18:59:52,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-26 18:59:52,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 18:59:52,603 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 18:59:52,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 18:59:52,603 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 18:59:52,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 18:59:52,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1221485425, now seen corresponding path program 13 times [2020-10-26 18:59:52,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 18:59:52,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851277785] [2020-10-26 18:59:52,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 18:59:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:52,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:52,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:52,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:52,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:57,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:57,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-26 18:59:57,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 18:59:57,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 18:59:57,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:57,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-26 18:59:57,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 18:59:57,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 18:59:57,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:57,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 18:59:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:57,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:57,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:57,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 18:59:57,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 18:59:57,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 18:59:57,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:57,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 18:59:57,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 18:59:57,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 18:59:57,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:57,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-26 18:59:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:57,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:57,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:57,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:57,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-26 18:59:57,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:57,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 18:59:57,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:57,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-26 18:59:57,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:57,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 18:59:57,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:58,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 18:59:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:58,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:58,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:58,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:58,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-26 18:59:58,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:58,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 18:59:58,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:58,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-26 18:59:58,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:58,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 18:59:58,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:58,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-26 18:59:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:58,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:58,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:58,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 18:59:58,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-26 18:59:58,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 18:59:58,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 18:59:58,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 18:59:58,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-26 18:59:58,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 18:59:58,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 18:59:58,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 18:59:58,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1783 backedges. 507 proven. 1183 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-26 18:59:58,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851277785] [2020-10-26 18:59:58,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 18:59:58,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-26 18:59:58,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431781667] [2020-10-26 18:59:58,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-26 18:59:58,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 18:59:58,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-26 18:59:58,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=689, Unknown=0, NotChecked=0, Total=930 [2020-10-26 18:59:58,396 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 31 states. [2020-10-26 18:59:59,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 18:59:59,373 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2020-10-26 18:59:59,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-26 18:59:59,373 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 138 [2020-10-26 18:59:59,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 18:59:59,374 INFO L225 Difference]: With dead ends: 129 [2020-10-26 18:59:59,375 INFO L226 Difference]: Without dead ends: 84 [2020-10-26 18:59:59,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=479, Invalid=1501, Unknown=0, NotChecked=0, Total=1980 [2020-10-26 18:59:59,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-26 18:59:59,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2020-10-26 18:59:59,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-26 18:59:59,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2020-10-26 18:59:59,393 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 138 [2020-10-26 18:59:59,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 18:59:59,394 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2020-10-26 18:59:59,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-26 18:59:59,396 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2020-10-26 18:59:59,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-26 18:59:59,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 18:59:59,398 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 18:59:59,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 18:59:59,398 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 18:59:59,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 18:59:59,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1887494609, now seen corresponding path program 14 times [2020-10-26 18:59:59,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 18:59:59,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825693899] [2020-10-26 18:59:59,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 18:59:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 18:59:59,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:59,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:59,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 18:59:59,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:04,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:04,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 19:00:04,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:00:04,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 19:00:04,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-26 19:00:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:00:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-26 19:00:04,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:04,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:00:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:04,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:04,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:04,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:00:04,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:00:04,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:00:04,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:04,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:00:04,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:00:04,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:00:04,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:04,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-26 19:00:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:04,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:04,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:04,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:04,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-26 19:00:04,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:00:04,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 19:00:04,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:04,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-26 19:00:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:00:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-26 19:00:04,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:05,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 19:00:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:05,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:05,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:05,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:05,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-26 19:00:05,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:00:05,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 19:00:05,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:05,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-26 19:00:05,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:00:05,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-26 19:00:05,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:05,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-26 19:00:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:05,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:05,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:05,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:05,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-26 19:00:05,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:00:05,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 19:00:05,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:05,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-26 19:00:05,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:00:05,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-26 19:00:05,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:05,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 588 proven. 1372 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-26 19:00:05,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825693899] [2020-10-26 19:00:05,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:00:05,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-26 19:00:05,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812739068] [2020-10-26 19:00:05,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-26 19:00:05,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:00:05,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-26 19:00:05,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2020-10-26 19:00:05,268 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand 33 states. [2020-10-26 19:00:06,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:00:06,338 INFO L93 Difference]: Finished difference Result 135 states and 147 transitions. [2020-10-26 19:00:06,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-26 19:00:06,339 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 146 [2020-10-26 19:00:06,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:00:06,340 INFO L225 Difference]: With dead ends: 135 [2020-10-26 19:00:06,341 INFO L226 Difference]: Without dead ends: 88 [2020-10-26 19:00:06,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=543, Invalid=1713, Unknown=0, NotChecked=0, Total=2256 [2020-10-26 19:00:06,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-26 19:00:06,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-10-26 19:00:06,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-26 19:00:06,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-10-26 19:00:06,349 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 146 [2020-10-26 19:00:06,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:00:06,351 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-10-26 19:00:06,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-26 19:00:06,351 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-10-26 19:00:06,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-26 19:00:06,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:00:06,353 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:00:06,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 19:00:06,354 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:00:06,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:00:06,354 INFO L82 PathProgramCache]: Analyzing trace with hash -2142775759, now seen corresponding path program 15 times [2020-10-26 19:00:06,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:00:06,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54157400] [2020-10-26 19:00:06,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:00:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:06,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:06,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:06,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:06,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:11,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:11,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-26 19:00:11,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:00:11,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-26 19:00:11,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:11,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 19:00:11,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:00:11,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-26 19:00:11,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:11,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:00:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:11,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:11,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:11,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:00:11,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:00:11,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:00:11,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:11,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:00:11,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:00:11,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:00:11,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:11,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-26 19:00:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:11,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:11,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:11,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:11,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-26 19:00:11,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:00:11,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 19:00:11,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:11,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 19:00:11,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:00:11,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-26 19:00:11,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:12,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-26 19:00:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:12,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:12,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:12,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:12,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-26 19:00:12,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:00:12,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-26 19:00:12,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:12,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 19:00:12,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:00:12,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-26 19:00:12,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:12,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-26 19:00:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:12,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:12,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:12,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:12,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-26 19:00:12,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:00:12,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-26 19:00:12,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:12,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 19:00:12,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:00:12,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-26 19:00:12,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2355 backedges. 675 proven. 1575 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-26 19:00:12,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54157400] [2020-10-26 19:00:12,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:00:12,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-26 19:00:12,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239038910] [2020-10-26 19:00:12,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-26 19:00:12,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:00:12,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-26 19:00:12,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=883, Unknown=0, NotChecked=0, Total=1190 [2020-10-26 19:00:12,410 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 35 states. [2020-10-26 19:00:13,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:00:13,582 INFO L93 Difference]: Finished difference Result 141 states and 153 transitions. [2020-10-26 19:00:13,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-26 19:00:13,582 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 154 [2020-10-26 19:00:13,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:00:13,583 INFO L225 Difference]: With dead ends: 141 [2020-10-26 19:00:13,583 INFO L226 Difference]: Without dead ends: 92 [2020-10-26 19:00:13,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=611, Invalid=1939, Unknown=0, NotChecked=0, Total=2550 [2020-10-26 19:00:13,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-26 19:00:13,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2020-10-26 19:00:13,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-26 19:00:13,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2020-10-26 19:00:13,596 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 154 [2020-10-26 19:00:13,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:00:13,597 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2020-10-26 19:00:13,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-26 19:00:13,597 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2020-10-26 19:00:13,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-26 19:00:13,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:00:13,599 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:00:13,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 19:00:13,599 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:00:13,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:00:13,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1057210223, now seen corresponding path program 16 times [2020-10-26 19:00:13,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:00:13,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573984981] [2020-10-26 19:00:13,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:00:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:13,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:13,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:13,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:13,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:18,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:18,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-26 19:00:18,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:00:18,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 19:00:18,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:18,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-26 19:00:18,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:00:18,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-26 19:00:18,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:18,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:00:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:18,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:18,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:18,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:00:18,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:00:18,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:00:18,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:18,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:00:18,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:00:18,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:00:18,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:18,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-26 19:00:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:18,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:18,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:19,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:19,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 19:00:19,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:00:19,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-26 19:00:19,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:19,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-26 19:00:19,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:00:19,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-26 19:00:19,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:19,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:00:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:19,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:19,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:19,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:19,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 19:00:19,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:00:19,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 19:00:19,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:19,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-26 19:00:19,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:00:19,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-26 19:00:19,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:19,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-26 19:00:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:19,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:19,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:19,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:19,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 19:00:19,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:00:19,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 19:00:19,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:19,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-26 19:00:19,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:00:19,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-26 19:00:19,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:19,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2671 backedges. 768 proven. 1792 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-26 19:00:19,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573984981] [2020-10-26 19:00:19,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:00:19,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-26 19:00:19,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657500542] [2020-10-26 19:00:19,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-26 19:00:19,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:00:19,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-26 19:00:19,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=989, Unknown=0, NotChecked=0, Total=1332 [2020-10-26 19:00:19,673 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand 37 states. [2020-10-26 19:00:20,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:00:20,798 INFO L93 Difference]: Finished difference Result 147 states and 159 transitions. [2020-10-26 19:00:20,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-26 19:00:20,798 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 162 [2020-10-26 19:00:20,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:00:20,800 INFO L225 Difference]: With dead ends: 147 [2020-10-26 19:00:20,800 INFO L226 Difference]: Without dead ends: 96 [2020-10-26 19:00:20,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=683, Invalid=2179, Unknown=0, NotChecked=0, Total=2862 [2020-10-26 19:00:20,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-26 19:00:20,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-10-26 19:00:20,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-26 19:00:20,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2020-10-26 19:00:20,808 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 162 [2020-10-26 19:00:20,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:00:20,808 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2020-10-26 19:00:20,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-26 19:00:20,808 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2020-10-26 19:00:20,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-26 19:00:20,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:00:20,811 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 17, 17, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:00:20,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 19:00:20,811 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:00:20,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:00:20,811 INFO L82 PathProgramCache]: Analyzing trace with hash -15261455, now seen corresponding path program 17 times [2020-10-26 19:00:20,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:00:20,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232974785] [2020-10-26 19:00:20,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:00:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:20,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:20,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:20,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:20,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:25,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:25,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-26 19:00:25,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:00:25,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-26 19:00:25,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:25,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-26 19:00:25,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:00:25,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 19:00:25,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:26,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:00:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:26,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:26,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:26,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:00:26,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:00:26,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:00:26,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:26,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:00:26,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:00:26,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:00:26,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:26,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:00:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:26,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:26,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:26,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:26,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-26 19:00:26,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:00:26,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 19:00:26,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:26,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-26 19:00:26,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:00:26,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 19:00:26,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:26,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-26 19:00:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:26,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:26,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:26,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:26,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-26 19:00:26,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:00:26,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 19:00:26,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:26,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-26 19:00:26,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:00:26,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 19:00:26,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:26,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-26 19:00:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:26,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:26,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:26,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:26,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-26 19:00:26,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:00:26,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-26 19:00:26,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:26,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-26 19:00:26,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:00:26,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 19:00:26,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:26,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3007 backedges. 867 proven. 2023 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-26 19:00:26,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232974785] [2020-10-26 19:00:26,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:00:26,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-26 19:00:26,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601720908] [2020-10-26 19:00:26,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-26 19:00:26,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:00:26,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-26 19:00:26,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1101, Unknown=0, NotChecked=0, Total=1482 [2020-10-26 19:00:26,945 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand 39 states. [2020-10-26 19:00:28,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:00:28,327 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2020-10-26 19:00:28,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-26 19:00:28,328 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 170 [2020-10-26 19:00:28,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:00:28,329 INFO L225 Difference]: With dead ends: 153 [2020-10-26 19:00:28,329 INFO L226 Difference]: Without dead ends: 100 [2020-10-26 19:00:28,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=759, Invalid=2433, Unknown=0, NotChecked=0, Total=3192 [2020-10-26 19:00:28,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-26 19:00:28,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2020-10-26 19:00:28,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-26 19:00:28,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2020-10-26 19:00:28,337 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 170 [2020-10-26 19:00:28,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:00:28,337 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2020-10-26 19:00:28,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-26 19:00:28,338 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2020-10-26 19:00:28,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-26 19:00:28,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:00:28,339 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:00:28,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 19:00:28,339 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:00:28,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:00:28,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1699645615, now seen corresponding path program 18 times [2020-10-26 19:00:28,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:00:28,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236843174] [2020-10-26 19:00:28,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:00:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:28,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:28,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:28,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:28,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:33,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:33,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-26 19:00:33,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:00:33,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-26 19:00:33,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:33,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 19:00:33,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:00:33,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 19:00:33,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:33,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:00:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:33,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:33,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:33,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:00:33,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:00:33,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:00:33,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:33,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:00:33,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:00:33,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:00:33,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:33,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-26 19:00:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:33,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:33,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:33,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:33,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-26 19:00:33,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:00:33,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-26 19:00:33,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 19:00:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:00:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 19:00:33,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:34,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 19:00:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:34,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:34,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:34,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:34,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-26 19:00:34,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:00:34,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 19:00:34,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:34,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 19:00:34,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:00:34,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 19:00:34,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:34,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-26 19:00:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:34,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:34,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:34,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:34,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-26 19:00:34,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:00:34,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-26 19:00:34,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:34,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 19:00:34,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:00:34,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 19:00:34,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:34,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3363 backedges. 972 proven. 2268 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-26 19:00:34,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236843174] [2020-10-26 19:00:34,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:00:34,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-26 19:00:34,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068887974] [2020-10-26 19:00:34,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-26 19:00:34,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:00:34,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-26 19:00:34,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=1219, Unknown=0, NotChecked=0, Total=1640 [2020-10-26 19:00:34,590 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand 41 states. [2020-10-26 19:00:36,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:00:36,081 INFO L93 Difference]: Finished difference Result 159 states and 171 transitions. [2020-10-26 19:00:36,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-26 19:00:36,082 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 178 [2020-10-26 19:00:36,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:00:36,083 INFO L225 Difference]: With dead ends: 159 [2020-10-26 19:00:36,083 INFO L226 Difference]: Without dead ends: 104 [2020-10-26 19:00:36,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=839, Invalid=2701, Unknown=0, NotChecked=0, Total=3540 [2020-10-26 19:00:36,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-26 19:00:36,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2020-10-26 19:00:36,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-26 19:00:36,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2020-10-26 19:00:36,092 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 178 [2020-10-26 19:00:36,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:00:36,092 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2020-10-26 19:00:36,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-26 19:00:36,093 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2020-10-26 19:00:36,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-26 19:00:36,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:00:36,094 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:00:36,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 19:00:36,094 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:00:36,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:00:36,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1752939599, now seen corresponding path program 19 times [2020-10-26 19:00:36,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:00:36,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456052281] [2020-10-26 19:00:36,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:00:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:36,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:36,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:36,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:36,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:41,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:41,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-26 19:00:41,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:00:41,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-26 19:00:41,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:41,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-26 19:00:41,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:00:41,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-26 19:00:41,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:41,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:00:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:41,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:41,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:41,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:00:41,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:00:41,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:00:41,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:41,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:00:41,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:00:41,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:00:41,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:41,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-26 19:00:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:41,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:41,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:41,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:41,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-26 19:00:41,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:00:41,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-26 19:00:41,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:41,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-26 19:00:41,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:00:41,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-26 19:00:41,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:42,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:00:42,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:42,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:42,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:42,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:42,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-26 19:00:42,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:00:42,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-26 19:00:42,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-26 19:00:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:00:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-26 19:00:42,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:42,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-26 19:00:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:42,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:42,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:42,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:42,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-26 19:00:42,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:00:42,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-26 19:00:42,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:42,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-26 19:00:42,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:00:42,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-26 19:00:42,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3739 backedges. 1083 proven. 2527 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-26 19:00:42,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456052281] [2020-10-26 19:00:42,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:00:42,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-26 19:00:42,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772549290] [2020-10-26 19:00:42,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-26 19:00:42,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:00:42,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-26 19:00:42,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1343, Unknown=0, NotChecked=0, Total=1806 [2020-10-26 19:00:42,458 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand 43 states. [2020-10-26 19:00:44,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:00:44,007 INFO L93 Difference]: Finished difference Result 165 states and 177 transitions. [2020-10-26 19:00:44,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-26 19:00:44,008 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 186 [2020-10-26 19:00:44,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:00:44,009 INFO L225 Difference]: With dead ends: 165 [2020-10-26 19:00:44,010 INFO L226 Difference]: Without dead ends: 108 [2020-10-26 19:00:44,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=923, Invalid=2983, Unknown=0, NotChecked=0, Total=3906 [2020-10-26 19:00:44,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-26 19:00:44,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2020-10-26 19:00:44,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-26 19:00:44,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2020-10-26 19:00:44,019 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 186 [2020-10-26 19:00:44,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:00:44,019 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2020-10-26 19:00:44,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-26 19:00:44,019 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2020-10-26 19:00:44,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-26 19:00:44,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:00:44,021 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 20, 20, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:00:44,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 19:00:44,021 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:00:44,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:00:44,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1394047471, now seen corresponding path program 20 times [2020-10-26 19:00:44,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:00:44,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840253275] [2020-10-26 19:00:44,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:00:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:44,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:44,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:44,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:44,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:49,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:49,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-26 19:00:49,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:00:49,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-26 19:00:49,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:49,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-26 19:00:49,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:00:49,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-26 19:00:49,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:49,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:00:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:49,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:49,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:49,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:00:49,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:00:49,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:00:49,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:49,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:00:49,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:00:49,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:00:49,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:49,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-26 19:00:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:49,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:49,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:49,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:49,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-26 19:00:49,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:00:49,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-26 19:00:49,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:49,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-26 19:00:49,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:00:49,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-26 19:00:49,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:50,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-26 19:00:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:50,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:50,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:50,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:50,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-26 19:00:50,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:00:50,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 19:00:50,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:50,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-26 19:00:50,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:00:50,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-26 19:00:50,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:50,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-26 19:00:50,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:50,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:50,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:50,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:50,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-26 19:00:50,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:00:50,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-26 19:00:50,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:50,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-26 19:00:50,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:00:50,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-26 19:00:50,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4135 backedges. 1200 proven. 2800 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-26 19:00:50,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840253275] [2020-10-26 19:00:50,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:00:50,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-26 19:00:50,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788993762] [2020-10-26 19:00:50,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-26 19:00:50,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:00:50,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-26 19:00:50,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=507, Invalid=1473, Unknown=0, NotChecked=0, Total=1980 [2020-10-26 19:00:50,498 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand 45 states. [2020-10-26 19:00:52,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:00:52,201 INFO L93 Difference]: Finished difference Result 171 states and 183 transitions. [2020-10-26 19:00:52,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-26 19:00:52,203 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 194 [2020-10-26 19:00:52,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:00:52,204 INFO L225 Difference]: With dead ends: 171 [2020-10-26 19:00:52,204 INFO L226 Difference]: Without dead ends: 112 [2020-10-26 19:00:52,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1011, Invalid=3279, Unknown=0, NotChecked=0, Total=4290 [2020-10-26 19:00:52,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-26 19:00:52,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2020-10-26 19:00:52,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-26 19:00:52,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2020-10-26 19:00:52,212 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 194 [2020-10-26 19:00:52,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:00:52,213 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 114 transitions. [2020-10-26 19:00:52,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-26 19:00:52,213 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 114 transitions. [2020-10-26 19:00:52,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-26 19:00:52,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:00:52,214 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:00:52,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 19:00:52,215 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:00:52,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:00:52,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1440169585, now seen corresponding path program 21 times [2020-10-26 19:00:52,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:00:52,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725313643] [2020-10-26 19:00:52,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:00:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:52,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:52,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:52,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:52,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:57,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:57,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-26 19:00:57,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:00:57,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-26 19:00:57,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:57,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-26 19:00:57,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:00:57,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-26 19:00:57,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:57,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:00:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:57,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:57,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:57,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:00:57,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:00:57,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:00:57,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:57,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:00:57,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:00:57,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:00:57,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:57,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-26 19:00:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:57,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:57,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:57,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:57,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-26 19:00:57,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:00:57,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-26 19:00:57,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:57,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-26 19:00:57,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:00:57,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-26 19:00:57,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:58,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-26 19:00:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:58,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:58,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:58,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:58,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-26 19:00:58,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:00:58,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-26 19:00:58,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-26 19:00:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:00:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-26 19:00:58,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:58,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-26 19:00:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:00:58,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:58,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:00:58,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:00:58,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-26 19:00:58,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:00:58,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-26 19:00:58,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:00:58,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-26 19:00:58,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:00:58,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-26 19:00:58,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:00:58,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4551 backedges. 1323 proven. 3087 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-26 19:00:58,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725313643] [2020-10-26 19:00:58,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:00:58,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-26 19:00:58,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972112675] [2020-10-26 19:00:58,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-26 19:00:58,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:00:58,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-26 19:00:58,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=1609, Unknown=0, NotChecked=0, Total=2162 [2020-10-26 19:00:58,961 INFO L87 Difference]: Start difference. First operand 110 states and 114 transitions. Second operand 47 states. [2020-10-26 19:01:00,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:01:00,756 INFO L93 Difference]: Finished difference Result 177 states and 189 transitions. [2020-10-26 19:01:00,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-26 19:01:00,757 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 202 [2020-10-26 19:01:00,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:01:00,758 INFO L225 Difference]: With dead ends: 177 [2020-10-26 19:01:00,758 INFO L226 Difference]: Without dead ends: 116 [2020-10-26 19:01:00,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1103, Invalid=3589, Unknown=0, NotChecked=0, Total=4692 [2020-10-26 19:01:00,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-26 19:01:00,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2020-10-26 19:01:00,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-26 19:01:00,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 118 transitions. [2020-10-26 19:01:00,768 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 118 transitions. Word has length 202 [2020-10-26 19:01:00,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:01:00,768 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 118 transitions. [2020-10-26 19:01:00,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-26 19:01:00,768 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 118 transitions. [2020-10-26 19:01:00,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-26 19:01:00,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:01:00,770 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:01:00,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 19:01:00,770 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:01:00,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:01:00,770 INFO L82 PathProgramCache]: Analyzing trace with hash -521573167, now seen corresponding path program 22 times [2020-10-26 19:01:00,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:01:00,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399812347] [2020-10-26 19:01:00,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:01:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:00,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:00,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:00,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:00,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:05,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:05,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 19:01:05,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:01:05,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-26 19:01:05,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:05,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-26 19:01:05,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:01:05,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-26 19:01:05,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:06,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:01:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:06,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:06,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:06,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:01:06,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:01:06,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:01:06,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:01:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:01:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:01:06,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:06,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-26 19:01:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:06,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:06,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:06,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:06,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-26 19:01:06,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:01:06,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-26 19:01:06,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:06,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-26 19:01:06,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:01:06,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-26 19:01:06,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:07,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-26 19:01:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:07,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:07,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:07,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:07,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-26 19:01:07,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:01:07,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-26 19:01:07,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-26 19:01:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:01:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-26 19:01:07,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:07,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-26 19:01:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:07,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:07,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:07,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:07,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-26 19:01:07,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:01:07,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-26 19:01:07,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:07,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-26 19:01:07,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:01:07,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-26 19:01:07,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:07,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4987 backedges. 1452 proven. 3388 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-26 19:01:07,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399812347] [2020-10-26 19:01:07,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:01:07,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-26 19:01:07,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222908791] [2020-10-26 19:01:07,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-26 19:01:07,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:01:07,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-26 19:01:07,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=1751, Unknown=0, NotChecked=0, Total=2352 [2020-10-26 19:01:07,499 INFO L87 Difference]: Start difference. First operand 114 states and 118 transitions. Second operand 49 states. [2020-10-26 19:01:09,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:01:09,326 INFO L93 Difference]: Finished difference Result 183 states and 195 transitions. [2020-10-26 19:01:09,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-26 19:01:09,326 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 210 [2020-10-26 19:01:09,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:01:09,328 INFO L225 Difference]: With dead ends: 183 [2020-10-26 19:01:09,328 INFO L226 Difference]: Without dead ends: 120 [2020-10-26 19:01:09,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1199, Invalid=3913, Unknown=0, NotChecked=0, Total=5112 [2020-10-26 19:01:09,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-26 19:01:09,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-10-26 19:01:09,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-26 19:01:09,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 122 transitions. [2020-10-26 19:01:09,341 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 122 transitions. Word has length 210 [2020-10-26 19:01:09,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:01:09,342 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 122 transitions. [2020-10-26 19:01:09,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-26 19:01:09,342 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 122 transitions. [2020-10-26 19:01:09,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-26 19:01:09,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:01:09,343 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 23, 23, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:01:09,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 19:01:09,345 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:01:09,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:01:09,346 INFO L82 PathProgramCache]: Analyzing trace with hash -2141712079, now seen corresponding path program 23 times [2020-10-26 19:01:09,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:01:09,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376596866] [2020-10-26 19:01:09,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:01:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:09,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:09,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:09,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:09,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:14,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:14,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-26 19:01:14,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:01:14,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 19:01:14,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:14,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-26 19:01:14,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:01:14,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-26 19:01:14,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:14,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:01:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:14,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:14,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:14,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:01:14,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:01:14,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:01:14,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:14,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:01:14,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:01:14,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:01:14,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:14,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-26 19:01:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:14,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:14,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:15,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:15,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-26 19:01:15,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:01:15,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-26 19:01:15,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:15,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-26 19:01:15,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:01:15,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-26 19:01:15,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:15,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-26 19:01:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:15,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:15,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:16,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:16,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-26 19:01:16,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:01:16,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-26 19:01:16,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:16,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-26 19:01:16,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:01:16,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-26 19:01:16,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:16,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-26 19:01:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:16,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:16,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:16,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:16,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-26 19:01:16,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:01:16,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-26 19:01:16,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-26 19:01:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:01:16,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-26 19:01:16,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 5443 backedges. 1587 proven. 3703 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-26 19:01:16,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376596866] [2020-10-26 19:01:16,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:01:16,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-26 19:01:16,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580555249] [2020-10-26 19:01:16,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-26 19:01:16,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:01:16,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-26 19:01:16,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=1899, Unknown=0, NotChecked=0, Total=2550 [2020-10-26 19:01:16,307 INFO L87 Difference]: Start difference. First operand 118 states and 122 transitions. Second operand 51 states. [2020-10-26 19:01:18,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:01:18,424 INFO L93 Difference]: Finished difference Result 189 states and 201 transitions. [2020-10-26 19:01:18,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-26 19:01:18,425 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 218 [2020-10-26 19:01:18,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:01:18,426 INFO L225 Difference]: With dead ends: 189 [2020-10-26 19:01:18,426 INFO L226 Difference]: Without dead ends: 124 [2020-10-26 19:01:18,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1299, Invalid=4251, Unknown=0, NotChecked=0, Total=5550 [2020-10-26 19:01:18,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-26 19:01:18,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-10-26 19:01:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-26 19:01:18,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 126 transitions. [2020-10-26 19:01:18,434 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 126 transitions. Word has length 218 [2020-10-26 19:01:18,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:01:18,435 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 126 transitions. [2020-10-26 19:01:18,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-26 19:01:18,435 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 126 transitions. [2020-10-26 19:01:18,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-26 19:01:18,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:01:18,437 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:01:18,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-26 19:01:18,437 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:01:18,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:01:18,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1509698449, now seen corresponding path program 24 times [2020-10-26 19:01:18,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:01:18,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535007308] [2020-10-26 19:01:18,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:01:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:18,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:18,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:18,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:18,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:23,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:23,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 19:01:23,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:01:23,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-26 19:01:23,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:23,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-26 19:01:23,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:01:23,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-26 19:01:23,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:23,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:01:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:24,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:24,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:24,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:01:24,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:01:24,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:01:24,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:24,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:01:24,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:01:24,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:01:24,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:24,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-26 19:01:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:24,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:24,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:24,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:24,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-26 19:01:24,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:01:24,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-26 19:01:24,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:24,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-26 19:01:24,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:01:24,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-26 19:01:24,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:25,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-26 19:01:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:25,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:25,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:25,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:25,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-26 19:01:25,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:01:25,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-26 19:01:25,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:25,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-26 19:01:25,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:01:25,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-26 19:01:25,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:25,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-26 19:01:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:25,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:25,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:25,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:25,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-26 19:01:25,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:01:25,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-26 19:01:25,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:25,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-26 19:01:25,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:01:25,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-26 19:01:25,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:25,444 INFO L134 CoverageAnalysis]: Checked inductivity of 5919 backedges. 1728 proven. 4032 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-26 19:01:25,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535007308] [2020-10-26 19:01:25,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:01:25,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-26 19:01:25,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23220941] [2020-10-26 19:01:25,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-26 19:01:25,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:01:25,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-26 19:01:25,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=2053, Unknown=0, NotChecked=0, Total=2756 [2020-10-26 19:01:25,446 INFO L87 Difference]: Start difference. First operand 122 states and 126 transitions. Second operand 53 states. [2020-10-26 19:01:27,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:01:27,520 INFO L93 Difference]: Finished difference Result 195 states and 207 transitions. [2020-10-26 19:01:27,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-26 19:01:27,520 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 226 [2020-10-26 19:01:27,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:01:27,521 INFO L225 Difference]: With dead ends: 195 [2020-10-26 19:01:27,521 INFO L226 Difference]: Without dead ends: 128 [2020-10-26 19:01:27,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1403, Invalid=4603, Unknown=0, NotChecked=0, Total=6006 [2020-10-26 19:01:27,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-26 19:01:27,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2020-10-26 19:01:27,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-26 19:01:27,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 130 transitions. [2020-10-26 19:01:27,535 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 130 transitions. Word has length 226 [2020-10-26 19:01:27,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:01:27,535 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 130 transitions. [2020-10-26 19:01:27,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-26 19:01:27,535 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 130 transitions. [2020-10-26 19:01:27,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-26 19:01:27,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:01:27,537 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 25, 25, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:01:27,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-26 19:01:27,537 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:01:27,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:01:27,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1756447759, now seen corresponding path program 25 times [2020-10-26 19:01:27,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:01:27,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561772945] [2020-10-26 19:01:27,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:01:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:27,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:27,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:27,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:27,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:32,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:32,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 19:01:32,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:01:32,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-26 19:01:32,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:32,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-26 19:01:32,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:01:32,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-26 19:01:32,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:33,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:01:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:33,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:33,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:33,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:01:33,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:01:33,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:01:33,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:33,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:01:33,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:01:33,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:01:33,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:33,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-26 19:01:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:33,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:33,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:33,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:33,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-26 19:01:33,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:01:33,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-26 19:01:33,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:33,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-26 19:01:33,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:01:33,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-26 19:01:33,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:34,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-26 19:01:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:34,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:34,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:34,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:34,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-26 19:01:34,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:01:34,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 19:01:34,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:34,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-26 19:01:34,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:01:34,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-26 19:01:34,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:34,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-26 19:01:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:34,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:34,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:34,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:34,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-26 19:01:34,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:01:34,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-26 19:01:34,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:34,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-26 19:01:34,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:01:34,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-26 19:01:34,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:34,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6415 backedges. 1875 proven. 4375 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-26 19:01:34,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561772945] [2020-10-26 19:01:34,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:01:34,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-10-26 19:01:34,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275689721] [2020-10-26 19:01:34,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-26 19:01:34,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:01:34,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-26 19:01:34,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=757, Invalid=2213, Unknown=0, NotChecked=0, Total=2970 [2020-10-26 19:01:34,589 INFO L87 Difference]: Start difference. First operand 126 states and 130 transitions. Second operand 55 states. [2020-10-26 19:01:36,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:01:36,928 INFO L93 Difference]: Finished difference Result 201 states and 213 transitions. [2020-10-26 19:01:36,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-26 19:01:36,929 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 234 [2020-10-26 19:01:36,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:01:36,930 INFO L225 Difference]: With dead ends: 201 [2020-10-26 19:01:36,930 INFO L226 Difference]: Without dead ends: 132 [2020-10-26 19:01:36,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1511, Invalid=4969, Unknown=0, NotChecked=0, Total=6480 [2020-10-26 19:01:36,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-26 19:01:36,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2020-10-26 19:01:36,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-26 19:01:36,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 134 transitions. [2020-10-26 19:01:36,938 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 134 transitions. Word has length 234 [2020-10-26 19:01:36,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:01:36,939 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 134 transitions. [2020-10-26 19:01:36,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-26 19:01:36,939 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 134 transitions. [2020-10-26 19:01:36,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-26 19:01:36,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:01:36,940 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 26, 26, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:01:36,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-26 19:01:36,940 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:01:36,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:01:36,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1969799761, now seen corresponding path program 26 times [2020-10-26 19:01:36,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:01:36,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20099404] [2020-10-26 19:01:36,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:01:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:36,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:37,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:37,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:37,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:41,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:41,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-26 19:01:41,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:01:41,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 19:01:41,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-26 19:01:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:01:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-26 19:01:41,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:42,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:01:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:42,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:42,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:42,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:01:42,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:01:42,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:01:42,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:42,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:01:42,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:01:42,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:01:42,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:42,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 19:01:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:42,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:42,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:42,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:42,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-26 19:01:42,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:01:42,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-26 19:01:42,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:42,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-26 19:01:42,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:01:42,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-26 19:01:42,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:43,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 19:01:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:43,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:43,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:43,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:43,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-26 19:01:43,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:01:43,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 19:01:43,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:43,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-26 19:01:43,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:01:43,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-26 19:01:43,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:44,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-26 19:01:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:44,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:44,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:44,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:44,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-26 19:01:44,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:01:44,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 19:01:44,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:44,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-26 19:01:44,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:01:44,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-26 19:01:44,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:44,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6931 backedges. 2028 proven. 4732 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-26 19:01:44,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20099404] [2020-10-26 19:01:44,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:01:44,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-10-26 19:01:44,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542780570] [2020-10-26 19:01:44,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-26 19:01:44,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:01:44,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-26 19:01:44,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=813, Invalid=2379, Unknown=0, NotChecked=0, Total=3192 [2020-10-26 19:01:44,210 INFO L87 Difference]: Start difference. First operand 130 states and 134 transitions. Second operand 57 states. [2020-10-26 19:01:46,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:01:46,710 INFO L93 Difference]: Finished difference Result 207 states and 219 transitions. [2020-10-26 19:01:46,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-26 19:01:46,711 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 242 [2020-10-26 19:01:46,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:01:46,713 INFO L225 Difference]: With dead ends: 207 [2020-10-26 19:01:46,713 INFO L226 Difference]: Without dead ends: 136 [2020-10-26 19:01:46,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1079 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1623, Invalid=5349, Unknown=0, NotChecked=0, Total=6972 [2020-10-26 19:01:46,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-26 19:01:46,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2020-10-26 19:01:46,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-26 19:01:46,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 138 transitions. [2020-10-26 19:01:46,722 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 138 transitions. Word has length 242 [2020-10-26 19:01:46,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:01:46,722 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 138 transitions. [2020-10-26 19:01:46,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-26 19:01:46,722 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 138 transitions. [2020-10-26 19:01:46,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-26 19:01:46,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:01:46,724 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:01:46,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-26 19:01:46,724 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:01:46,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:01:46,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1426276017, now seen corresponding path program 27 times [2020-10-26 19:01:46,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:01:46,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883360904] [2020-10-26 19:01:46,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:01:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:46,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:46,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:46,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:46,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:51,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:51,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-26 19:01:51,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:01:51,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-26 19:01:51,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:51,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-26 19:01:51,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:01:51,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-26 19:01:51,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:52,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:01:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:52,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:52,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:52,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:01:52,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:01:52,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:01:52,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:52,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:01:52,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:01:52,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:01:52,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:52,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-26 19:01:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:52,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:52,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:52,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:52,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 19:01:52,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:01:52,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-26 19:01:52,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:52,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-26 19:01:52,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:01:52,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-26 19:01:52,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:53,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-26 19:01:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:53,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:53,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:53,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:53,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 19:01:53,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:01:53,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-26 19:01:53,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:53,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-26 19:01:53,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:01:53,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-26 19:01:53,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:53,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-26 19:01:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:53,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:53,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:54,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:01:54,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 19:01:54,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:01:54,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-26 19:01:54,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:01:54,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-26 19:01:54,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:01:54,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-26 19:01:54,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:01:54,078 INFO L134 CoverageAnalysis]: Checked inductivity of 7467 backedges. 2187 proven. 5103 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-26 19:01:54,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883360904] [2020-10-26 19:01:54,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:01:54,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-10-26 19:01:54,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826877741] [2020-10-26 19:01:54,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-10-26 19:01:54,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:01:54,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-10-26 19:01:54,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=871, Invalid=2551, Unknown=0, NotChecked=0, Total=3422 [2020-10-26 19:01:54,080 INFO L87 Difference]: Start difference. First operand 134 states and 138 transitions. Second operand 59 states. [2020-10-26 19:01:56,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:01:56,736 INFO L93 Difference]: Finished difference Result 213 states and 225 transitions. [2020-10-26 19:01:56,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-26 19:01:56,736 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 250 [2020-10-26 19:01:56,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:01:56,738 INFO L225 Difference]: With dead ends: 213 [2020-10-26 19:01:56,738 INFO L226 Difference]: Without dead ends: 140 [2020-10-26 19:01:56,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1161 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1739, Invalid=5743, Unknown=0, NotChecked=0, Total=7482 [2020-10-26 19:01:56,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-26 19:01:56,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2020-10-26 19:01:56,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-26 19:01:56,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 142 transitions. [2020-10-26 19:01:56,748 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 142 transitions. Word has length 250 [2020-10-26 19:01:56,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:01:56,748 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 142 transitions. [2020-10-26 19:01:56,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-10-26 19:01:56,748 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 142 transitions. [2020-10-26 19:01:56,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-26 19:01:56,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:01:56,749 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 28, 28, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:01:56,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-26 19:01:56,750 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:01:56,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:01:56,750 INFO L82 PathProgramCache]: Analyzing trace with hash -898158319, now seen corresponding path program 28 times [2020-10-26 19:01:56,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:01:56,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76993168] [2020-10-26 19:01:56,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:01:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:01:56,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:56,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:56,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:01:56,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:01,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:02:01,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-26 19:02:01,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:02:01,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 19:02:01,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:02:01,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-26 19:02:01,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:02:01,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-26 19:02:01,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:02:02,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:02:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:02:02,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:02,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:02:02,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:02:02,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:02:02,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:02:02,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:02:02,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:02:02,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:02:02,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:02:02,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:02:02,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:02:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:02:02,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:02,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:02,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:02:02,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-26 19:02:02,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:02:02,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-26 19:02:02,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:02:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-26 19:02:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:02:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-26 19:02:02,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:02:03,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:02:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:02:03,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:03,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:04,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:02:04,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-26 19:02:04,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:02:04,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-26 19:02:04,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:02:04,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-26 19:02:04,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:02:04,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-26 19:02:04,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:02:04,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-26 19:02:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:02:04,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:04,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:04,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:02:04,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-26 19:02:04,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:02:04,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-26 19:02:04,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:02:04,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-26 19:02:04,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:02:04,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-26 19:02:04,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:02:04,282 INFO L134 CoverageAnalysis]: Checked inductivity of 8023 backedges. 2352 proven. 5488 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-26 19:02:04,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76993168] [2020-10-26 19:02:04,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:02:04,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2020-10-26 19:02:04,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744129242] [2020-10-26 19:02:04,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-10-26 19:02:04,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:02:04,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-10-26 19:02:04,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=931, Invalid=2729, Unknown=0, NotChecked=0, Total=3660 [2020-10-26 19:02:04,284 INFO L87 Difference]: Start difference. First operand 138 states and 142 transitions. Second operand 61 states. [2020-10-26 19:02:06,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:02:06,936 INFO L93 Difference]: Finished difference Result 219 states and 231 transitions. [2020-10-26 19:02:06,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-26 19:02:06,937 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 258 [2020-10-26 19:02:06,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:02:06,938 INFO L225 Difference]: With dead ends: 219 [2020-10-26 19:02:06,938 INFO L226 Difference]: Without dead ends: 144 [2020-10-26 19:02:06,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1246 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1859, Invalid=6151, Unknown=0, NotChecked=0, Total=8010 [2020-10-26 19:02:06,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-26 19:02:06,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2020-10-26 19:02:06,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-26 19:02:06,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 146 transitions. [2020-10-26 19:02:06,947 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 146 transitions. Word has length 258 [2020-10-26 19:02:06,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:02:06,948 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 146 transitions. [2020-10-26 19:02:06,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-10-26 19:02:06,948 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 146 transitions. [2020-10-26 19:02:06,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-26 19:02:06,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:02:06,950 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 29, 29, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:02:06,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-26 19:02:06,950 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:02:06,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:02:06,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1380083343, now seen corresponding path program 29 times [2020-10-26 19:02:06,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:02:06,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248413206] [2020-10-26 19:02:06,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:02:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:02:06,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:07,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:07,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:07,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:11,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:02:11,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-26 19:02:12,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:02:12,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-26 19:02:12,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:02:12,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-26 19:02:12,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:02:12,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-26 19:02:12,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:02:12,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:02:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:02:12,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:12,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:02:12,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:02:12,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:02:12,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:02:12,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:02:12,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:02:12,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:02:12,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:02:12,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:02:12,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-26 19:02:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:02:12,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:12,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:12,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:02:12,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-26 19:02:12,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:02:12,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-26 19:02:12,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:02:12,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-26 19:02:12,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:02:12,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-26 19:02:12,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:02:14,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-26 19:02:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:02:14,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:14,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:14,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:02:14,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-26 19:02:14,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:02:14,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-26 19:02:14,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:02:14,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-26 19:02:14,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:02:14,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-26 19:02:14,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:02:14,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-26 19:02:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:02:14,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:14,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:14,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:02:14,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-26 19:02:14,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:02:14,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-26 19:02:14,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:02:14,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-26 19:02:14,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:02:14,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-26 19:02:14,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:02:14,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8599 backedges. 2523 proven. 5887 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-26 19:02:14,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248413206] [2020-10-26 19:02:14,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:02:14,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2020-10-26 19:02:14,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399821856] [2020-10-26 19:02:14,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-26 19:02:14,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:02:14,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-26 19:02:14,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=993, Invalid=2913, Unknown=0, NotChecked=0, Total=3906 [2020-10-26 19:02:14,668 INFO L87 Difference]: Start difference. First operand 142 states and 146 transitions. Second operand 63 states. [2020-10-26 19:02:17,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:02:17,630 INFO L93 Difference]: Finished difference Result 225 states and 237 transitions. [2020-10-26 19:02:17,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-26 19:02:17,632 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 266 [2020-10-26 19:02:17,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:02:17,633 INFO L225 Difference]: With dead ends: 225 [2020-10-26 19:02:17,633 INFO L226 Difference]: Without dead ends: 148 [2020-10-26 19:02:17,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1983, Invalid=6573, Unknown=0, NotChecked=0, Total=8556 [2020-10-26 19:02:17,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-26 19:02:17,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2020-10-26 19:02:17,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-26 19:02:17,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 150 transitions. [2020-10-26 19:02:17,643 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 150 transitions. Word has length 266 [2020-10-26 19:02:17,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:02:17,643 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 150 transitions. [2020-10-26 19:02:17,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-26 19:02:17,644 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 150 transitions. [2020-10-26 19:02:17,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-26 19:02:17,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:02:17,645 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:02:17,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-26 19:02:17,646 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:02:17,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:02:17,646 INFO L82 PathProgramCache]: Analyzing trace with hash 711948241, now seen corresponding path program 30 times [2020-10-26 19:02:17,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:02:17,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866856252] [2020-10-26 19:02:17,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:02:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:02:17,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:17,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:17,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:17,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:22,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:02:22,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-26 19:02:22,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:02:22,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 19:02:22,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:02:22,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-26 19:02:22,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:02:22,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-26 19:02:22,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:02:23,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:02:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:02:23,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:23,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:02:23,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:02:23,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:02:23,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:02:23,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:02:23,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:02:23,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:02:23,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:02:23,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:02:23,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-26 19:02:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:02:23,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:23,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:23,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:02:23,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 19:02:23,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:02:23,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-26 19:02:23,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:02:23,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-26 19:02:23,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:02:23,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-26 19:02:23,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:02:25,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 19:02:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:02:25,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:25,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:25,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:02:25,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 19:02:25,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:02:25,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-26 19:02:25,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:02:25,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-26 19:02:25,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:02:25,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-26 19:02:25,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:02:25,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-26 19:02:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:02:25,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:25,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:02:25,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:02:25,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 19:02:25,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:02:25,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-26 19:02:25,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:02:25,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-26 19:02:25,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:02:25,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-26 19:02:25,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:02:25,525 INFO L134 CoverageAnalysis]: Checked inductivity of 9195 backedges. 2700 proven. 6300 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-26 19:02:25,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866856252] [2020-10-26 19:02:25,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:02:25,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2020-10-26 19:02:25,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442540036] [2020-10-26 19:02:25,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-10-26 19:02:25,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:02:25,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-10-26 19:02:25,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1057, Invalid=3103, Unknown=0, NotChecked=0, Total=4160 [2020-10-26 19:02:25,528 INFO L87 Difference]: Start difference. First operand 146 states and 150 transitions. Second operand 65 states.