/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/reducercommutativity/sum20-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:31:35,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:31:35,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:31:35,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:31:35,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:31:35,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:31:35,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:31:35,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:31:35,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:31:35,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:31:35,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:31:35,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:31:35,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:31:35,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:31:35,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:31:35,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:31:35,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:31:35,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:31:35,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:31:35,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:31:35,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:31:35,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:31:35,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:31:35,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:31:35,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:31:35,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:31:35,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:31:35,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:31:35,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:31:35,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:31:35,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:31:35,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:31:35,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:31:35,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:31:35,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:31:35,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:31:35,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:31:35,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:31:35,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:31:35,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:31:35,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:31:35,651 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 [2020-10-28 17:31:35,715 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:31:35,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:31:35,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:31:35,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:31:35,721 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:31:35,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:31:35,721 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:31:35,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:31:35,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:31:35,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:31:35,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:31:35,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:31:35,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:31:35,723 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:31:35,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:31:35,724 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:31:35,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:31:35,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:31:35,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:31:35,724 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:31:35,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:31:35,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:31:35,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:31:35,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:31:35,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:31:35,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:31:35,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:31:35,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:31:35,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:31:35,726 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:31:36,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:31:36,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:31:36,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:31:36,202 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:31:36,203 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:31:36,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum20-2.i [2020-10-28 17:31:36,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f73d263a9/5cde84cd191b42d5a81502d323923a55/FLAG27077a9e6 [2020-10-28 17:31:36,872 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:31:36,873 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sum20-2.i [2020-10-28 17:31:36,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f73d263a9/5cde84cd191b42d5a81502d323923a55/FLAG27077a9e6 [2020-10-28 17:31:37,259 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f73d263a9/5cde84cd191b42d5a81502d323923a55 [2020-10-28 17:31:37,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:31:37,273 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:31:37,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:31:37,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:31:37,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:31:37,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:31:37" (1/1) ... [2020-10-28 17:31:37,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dc20e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:31:37, skipping insertion in model container [2020-10-28 17:31:37,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:31:37" (1/1) ... [2020-10-28 17:31:37,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:31:37,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:31:37,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:31:37,534 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:31:37,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:31:37,578 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:31:37,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:31:37 WrapperNode [2020-10-28 17:31:37,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:31:37,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:31:37,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:31:37,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:31:37,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:31:37" (1/1) ... [2020-10-28 17:31:37,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:31:37" (1/1) ... [2020-10-28 17:31:37,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:31:37" (1/1) ... [2020-10-28 17:31:37,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:31:37" (1/1) ... [2020-10-28 17:31:37,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:31:37" (1/1) ... [2020-10-28 17:31:37,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:31:37" (1/1) ... [2020-10-28 17:31:37,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:31:37" (1/1) ... [2020-10-28 17:31:37,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:31:37,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:31:37,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:31:37,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:31:37,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:31:37" (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 [2020-10-28 17:31:37,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:31:37,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:31:37,708 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:31:37,709 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-10-28 17:31:37,709 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:31:37,709 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:31:37,709 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:31:37,710 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 17:31:37,710 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 17:31:37,710 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:31:37,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:31:37,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 17:31:37,712 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-10-28 17:31:37,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:31:37,712 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:31:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:31:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:31:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:31:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:31:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:31:38,372 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:31:38,372 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 17:31:38,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:31:38 BoogieIcfgContainer [2020-10-28 17:31:38,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:31:38,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:31:38,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:31:38,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:31:38,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:31:37" (1/3) ... [2020-10-28 17:31:38,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e3cdab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:31:38, skipping insertion in model container [2020-10-28 17:31:38,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:31:37" (2/3) ... [2020-10-28 17:31:38,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e3cdab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:31:38, skipping insertion in model container [2020-10-28 17:31:38,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:31:38" (3/3) ... [2020-10-28 17:31:38,383 INFO L111 eAbstractionObserver]: Analyzing ICFG sum20-2.i [2020-10-28 17:31:38,400 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:31:38,406 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:31:38,420 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:31:38,450 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:31:38,450 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:31:38,450 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:31:38,450 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:31:38,450 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:31:38,451 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:31:38,451 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:31:38,451 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:31:38,469 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-28 17:31:38,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 17:31:38,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:38,477 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] [2020-10-28 17:31:38,478 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:38,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:38,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1900796497, now seen corresponding path program 1 times [2020-10-28 17:31:38,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:38,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981602452] [2020-10-28 17:31:38,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:38,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:38,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:38,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:38,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:39,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:39,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:40,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:40,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:31:40,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:31:40,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1407 [2020-10-28 17:31:40,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:40,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:40,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:40,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:31:40,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:40,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 17:31:40,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:40,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:40,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:40,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:40,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:40,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:31:40,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:40,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:40,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:40,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:40,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:40,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:40,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 17:31:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:40,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:40,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:40,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:31:40,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:40,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:31:40,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:40,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:40,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:40,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:31:40,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:40,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:40,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 17:31:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:40,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:40,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:40,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:40,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:31:40,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:40,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:31:40,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:40,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:40,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:40,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:31:40,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:40,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:40,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:31:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:40,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:40,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:40,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:40,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:31:40,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:40,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:31:40,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:40,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:40,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:40,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:31:40,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:40,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:40,265 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 17:31:40,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981602452] [2020-10-28 17:31:40,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:40,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-10-28 17:31:40,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011829081] [2020-10-28 17:31:40,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 17:31:40,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:40,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 17:31:40,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 17:31:40,301 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-28 17:31:40,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:40,455 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2020-10-28 17:31:40,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 17:31:40,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-28 17:31:40,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:40,469 INFO L225 Difference]: With dead ends: 60 [2020-10-28 17:31:40,469 INFO L226 Difference]: Without dead ends: 28 [2020-10-28 17:31:40,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 17:31:40,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-28 17:31:40,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-28 17:31:40,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 17:31:40,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-28 17:31:40,534 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2020-10-28 17:31:40,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:40,535 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-28 17:31:40,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 17:31:40,535 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-28 17:31:40,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 17:31:40,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:40,537 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] [2020-10-28 17:31:40,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:31:40,538 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:40,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:40,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1640105647, now seen corresponding path program 1 times [2020-10-28 17:31:40,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:40,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310833224] [2020-10-28 17:31:40,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:40,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:40,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:40,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:40,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:40,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:40,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:42,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:42,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:31:42,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:31:42,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1625 [2020-10-28 17:31:42,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:42,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:42,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:31:42,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:31:42,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:31:42,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:42,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:42,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:42,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:42,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:42,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:42,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:31:42,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:42,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:42,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:42,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:42,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:42,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:42,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 17:31:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:42,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:42,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:42,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:42,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:31:42,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:42,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:31:42,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:42,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:42,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:42,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:31:42,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:42,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:42,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 17:31:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:42,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:42,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:42,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:42,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:31:42,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:42,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:31:42,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:42,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:42,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:42,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:31:42,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:42,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:42,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:31:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:42,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:42,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:42,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:42,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:31:42,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:42,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:31:42,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:42,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:42,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:42,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:31:42,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:42,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:42,314 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 17:31:42,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310833224] [2020-10-28 17:31:42,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:31:42,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:31:42,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671177750] [2020-10-28 17:31:42,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:31:42,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:42,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:31:42,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:31:42,321 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-28 17:31:42,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:42,493 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-28 17:31:42,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:31:42,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-28 17:31:42,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:42,495 INFO L225 Difference]: With dead ends: 50 [2020-10-28 17:31:42,495 INFO L226 Difference]: Without dead ends: 30 [2020-10-28 17:31:42,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:31:42,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-28 17:31:42,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-28 17:31:42,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-28 17:31:42,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-28 17:31:42,514 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-28 17:31:42,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:42,515 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-28 17:31:42,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:31:42,517 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-28 17:31:42,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 17:31:42,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:42,521 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, 1, 1] [2020-10-28 17:31:42,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:31:42,522 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:42,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:42,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1356580685, now seen corresponding path program 1 times [2020-10-28 17:31:42,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:42,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777174871] [2020-10-28 17:31:42,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:42,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:42,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:42,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:42,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:42,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:42,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:44,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:44,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:31:44,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:31:44,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2282 [2020-10-28 17:31:44,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:44,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:44,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:31:44,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:31:44,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:31:44,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:44,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:44,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:44,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:44,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:44,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:44,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:31:44,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:44,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:44,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:44,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:44,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:44,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:44,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:31:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:44,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:44,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:44,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:44,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:31:44,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:44,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:31:44,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:44,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:44,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:44,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:31:44,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:44,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:44,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 17:31:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:44,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:44,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:44,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:44,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:31:44,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:44,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:31:44,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:44,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:44,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:44,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:31:44,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:44,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:44,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:31:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:44,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:44,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:44,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:44,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:31:44,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:44,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:31:44,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:44,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:44,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:44,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:31:44,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:44,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:44,950 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 17:31:44,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777174871] [2020-10-28 17:31:44,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:44,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:31:44,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126385676] [2020-10-28 17:31:44,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:31:44,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:44,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:31:44,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:31:44,956 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-28 17:31:45,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:45,167 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-10-28 17:31:45,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:31:45,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-28 17:31:45,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:45,169 INFO L225 Difference]: With dead ends: 52 [2020-10-28 17:31:45,169 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 17:31:45,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:31:45,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 17:31:45,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-28 17:31:45,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-28 17:31:45,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-28 17:31:45,183 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 36 [2020-10-28 17:31:45,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:45,183 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-28 17:31:45,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:31:45,184 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-28 17:31:45,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 17:31:45,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:45,186 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 17:31:45,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:31:45,187 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:45,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:45,188 INFO L82 PathProgramCache]: Analyzing trace with hash 527968149, now seen corresponding path program 2 times [2020-10-28 17:31:45,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:45,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805687638] [2020-10-28 17:31:45,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:45,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:45,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:45,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:45,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:45,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:45,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:48,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:48,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 17:31:48,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:31:48,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3035 [2020-10-28 17:31:48,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:48,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:48,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:31:48,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 17:31:48,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:31:48,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:48,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:48,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:48,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:48,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:48,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:48,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:31:48,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:48,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:48,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:48,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:48,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:48,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:48,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:31:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:48,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:48,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:48,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:48,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:31:48,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:48,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:31:48,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:48,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:48,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:48,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:48,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:48,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:48,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 17:31:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:48,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:48,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:48,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:48,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:31:48,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:48,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:31:48,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:48,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:48,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:48,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:48,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:48,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:48,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:31:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:48,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:48,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:48,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:31:48,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:48,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:31:48,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:48,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:31:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:31:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:31:48,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:48,344 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:31:48,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805687638] [2020-10-28 17:31:48,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:31:48,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:31:48,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706768525] [2020-10-28 17:31:48,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:31:48,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:48,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:31:48,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:31:48,348 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 4 states. [2020-10-28 17:31:48,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:48,472 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-28 17:31:48,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:31:48,473 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-28 17:31:48,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:48,474 INFO L225 Difference]: With dead ends: 52 [2020-10-28 17:31:48,474 INFO L226 Difference]: Without dead ends: 33 [2020-10-28 17:31:48,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:31:48,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-28 17:31:48,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-28 17:31:48,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-28 17:31:48,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-28 17:31:48,490 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 38 [2020-10-28 17:31:48,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:48,491 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-28 17:31:48,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:31:48,491 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-28 17:31:48,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 17:31:48,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:48,493 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-28 17:31:48,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:31:48,493 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:48,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:48,494 INFO L82 PathProgramCache]: Analyzing trace with hash 147249011, now seen corresponding path program 1 times [2020-10-28 17:31:48,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:48,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828158034] [2020-10-28 17:31:48,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:48,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:48,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:48,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:48,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:48,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:53,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:53,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 17:31:53,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:31:53,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 17:31:53,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:53,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:53,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:31:53,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 17:31:53,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:31:53,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:53,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:53,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:53,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:53,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:53,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:53,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:31:53,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:53,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:53,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:53,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:53,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:53,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:53,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:31:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:53,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:53,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:53,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:53,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:31:53,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:53,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:31:53,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:53,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:53,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:53,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:53,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:53,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:53,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 17:31:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:53,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:53,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:53,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:53,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:31:53,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:53,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:31:53,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:53,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:53,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:53,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:53,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:53,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:53,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 17:31:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:53,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:53,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:53,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:31:53,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:53,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:31:53,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:53,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:31:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:31:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:31:53,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:53,688 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-28 17:31:53,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828158034] [2020-10-28 17:31:53,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:53,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:31:53,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315152088] [2020-10-28 17:31:53,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:31:53,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:53,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:31:53,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:31:53,691 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2020-10-28 17:31:53,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:53,864 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2020-10-28 17:31:53,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:31:53,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-10-28 17:31:53,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:53,867 INFO L225 Difference]: With dead ends: 55 [2020-10-28 17:31:53,867 INFO L226 Difference]: Without dead ends: 35 [2020-10-28 17:31:53,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:31:53,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-28 17:31:53,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-28 17:31:53,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-28 17:31:53,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-28 17:31:53,881 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 44 [2020-10-28 17:31:53,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:53,883 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-28 17:31:53,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:31:53,883 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-28 17:31:53,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 17:31:53,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:53,886 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] [2020-10-28 17:31:53,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:31:53,887 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:53,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:53,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1486624559, now seen corresponding path program 2 times [2020-10-28 17:31:53,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:53,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172215012] [2020-10-28 17:31:53,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:53,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:53,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:53,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:53,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:55,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:58,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:58,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 17:31:58,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:31:58,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 17:31:58,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:58,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:58,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:31:58,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 17:31:58,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:31:58,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:58,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:58,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:58,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:58,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:58,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:58,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:31:58,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:58,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:58,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:58,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:58,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:58,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:58,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:31:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:58,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:58,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:58,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:58,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:31:58,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:58,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 17:31:58,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:58,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:58,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:58,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:58,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:58,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:58,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 17:31:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:58,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:59,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:59,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:59,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:31:59,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:59,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:31:59,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:59,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:59,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:59,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:59,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:31:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:59,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:59,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:59,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:59,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:31:59,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:59,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 17:31:59,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:59,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:31:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:59,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:59,065 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-28 17:31:59,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172215012] [2020-10-28 17:31:59,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:31:59,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:31:59,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116136243] [2020-10-28 17:31:59,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:31:59,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:59,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:31:59,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:31:59,068 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 4 states. [2020-10-28 17:31:59,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:59,149 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-10-28 17:31:59,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:31:59,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-28 17:31:59,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:59,150 INFO L225 Difference]: With dead ends: 53 [2020-10-28 17:31:59,150 INFO L226 Difference]: Without dead ends: 36 [2020-10-28 17:31:59,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:31:59,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-28 17:31:59,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-28 17:31:59,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-28 17:31:59,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-28 17:31:59,158 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 50 [2020-10-28 17:31:59,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:59,160 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-28 17:31:59,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:31:59,160 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-28 17:31:59,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 17:31:59,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:59,161 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, 1, 1] [2020-10-28 17:31:59,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:31:59,162 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:59,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:59,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1352891471, now seen corresponding path program 1 times [2020-10-28 17:31:59,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:59,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9610722] [2020-10-28 17:31:59,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:59,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:59,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:59,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:59,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:00,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:04,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:04,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 17:32:04,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:32:04,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 17:32:04,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:04,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:04,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:32:04,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:32:04,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:32:04,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:04,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:04,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:04,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:04,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:04,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:04,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:32:04,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:04,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:04,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:04,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:04,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:04,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:04,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:32:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:04,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:04,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:04,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:04,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:32:04,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:04,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:32:04,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:04,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:04,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:04,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:32:04,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:04,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:04,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 17:32:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:04,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:04,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:04,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:04,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:32:04,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:04,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 17:32:04,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:04,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:04,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:04,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:32:04,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:04,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:04,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 17:32:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:04,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:04,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:04,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:04,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:32:04,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:04,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:32:04,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:04,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:04,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:04,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:32:04,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:04,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:04,353 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-28 17:32:04,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9610722] [2020-10-28 17:32:04,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:04,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:32:04,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232793671] [2020-10-28 17:32:04,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:32:04,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:04,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:32:04,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:32:04,359 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-28 17:32:04,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:04,477 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-28 17:32:04,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:32:04,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-28 17:32:04,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:04,479 INFO L225 Difference]: With dead ends: 62 [2020-10-28 17:32:04,479 INFO L226 Difference]: Without dead ends: 38 [2020-10-28 17:32:04,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:32:04,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-28 17:32:04,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-28 17:32:04,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-28 17:32:04,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-28 17:32:04,495 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 52 [2020-10-28 17:32:04,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:04,495 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-28 17:32:04,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:32:04,495 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-28 17:32:04,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 17:32:04,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:04,497 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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] [2020-10-28 17:32:04,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:32:04,498 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:04,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:04,498 INFO L82 PathProgramCache]: Analyzing trace with hash -581867727, now seen corresponding path program 2 times [2020-10-28 17:32:04,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:04,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097198893] [2020-10-28 17:32:04,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:04,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:04,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:04,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:04,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:05,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:09,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:09,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 17:32:09,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:32:09,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 17:32:09,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:09,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:09,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:32:09,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 17:32:09,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:32:09,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:32:09,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:09,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:09,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:09,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:09,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:09,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:32:09,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:09,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:09,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:09,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:09,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:09,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:09,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:32:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:09,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:09,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:09,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:09,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:32:09,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:09,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:32:09,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:09,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:09,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:09,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:09,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:09,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:09,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 17:32:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:09,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:09,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:09,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:09,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:32:09,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:09,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:32:09,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:09,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:09,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:09,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:09,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:09,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:09,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:32:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:09,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:09,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:09,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:32:09,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:09,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:32:09,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:09,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:32:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:32:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:32:09,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:09,688 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-28 17:32:09,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097198893] [2020-10-28 17:32:09,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:09,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:32:09,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793296972] [2020-10-28 17:32:09,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:32:09,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:09,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:32:09,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:32:09,693 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-28 17:32:09,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:09,879 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2020-10-28 17:32:09,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:32:09,880 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-28 17:32:09,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:09,880 INFO L225 Difference]: With dead ends: 63 [2020-10-28 17:32:09,881 INFO L226 Difference]: Without dead ends: 40 [2020-10-28 17:32:09,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:32:09,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-28 17:32:09,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-28 17:32:09,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 17:32:09,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-28 17:32:09,894 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 54 [2020-10-28 17:32:09,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:09,894 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-28 17:32:09,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:32:09,895 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-28 17:32:09,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 17:32:09,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:09,895 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, 1, 1] [2020-10-28 17:32:09,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:32:09,896 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:09,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:09,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1202302705, now seen corresponding path program 3 times [2020-10-28 17:32:09,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:09,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450607435] [2020-10-28 17:32:09,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:09,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:09,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:09,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:09,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:11,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:14,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:14,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 17:32:14,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:32:14,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 17:32:14,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:14,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:14,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:32:14,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 17:32:14,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:32:14,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:14,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:14,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:14,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:14,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:14,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:14,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:32:14,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:14,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:14,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:14,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:32:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:14,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:14,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:15,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:15,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:32:15,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:15,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:32:15,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:15,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:15,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:15,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:15,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:15,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:15,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 17:32:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:15,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:15,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:15,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:15,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:32:15,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:15,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:32:15,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:15,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:15,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:15,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:15,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:15,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:15,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 17:32:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:15,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:15,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:15,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:15,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:32:15,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:15,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 17:32:15,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:15,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:15,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:15,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:32:15,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:15,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:15,080 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-28 17:32:15,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450607435] [2020-10-28 17:32:15,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:15,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:32:15,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353856789] [2020-10-28 17:32:15,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:32:15,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:15,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:32:15,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:32:15,083 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 5 states. [2020-10-28 17:32:15,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:15,165 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-10-28 17:32:15,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:32:15,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-10-28 17:32:15,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:15,167 INFO L225 Difference]: With dead ends: 61 [2020-10-28 17:32:15,167 INFO L226 Difference]: Without dead ends: 42 [2020-10-28 17:32:15,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:32:15,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-28 17:32:15,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-28 17:32:15,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 17:32:15,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-28 17:32:15,174 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-28 17:32:15,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:15,175 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-28 17:32:15,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:32:15,175 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-28 17:32:15,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 17:32:15,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:15,176 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 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] [2020-10-28 17:32:15,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:32:15,176 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:15,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:15,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1065768205, now seen corresponding path program 4 times [2020-10-28 17:32:15,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:15,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10661176] [2020-10-28 17:32:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:15,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:15,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:15,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:15,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:17,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:20,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:20,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 17:32:20,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:32:20,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 17:32:20,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:20,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:20,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:32:20,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:32:20,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:32:20,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:20,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:20,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:20,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:20,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:20,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:20,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:32:20,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:20,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:20,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:20,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:20,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:20,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:20,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:32:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:20,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:20,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:20,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:20,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:32:20,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:20,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:32:20,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:20,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:20,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:20,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:20,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:20,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:20,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 17:32:20,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:20,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:20,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:20,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:32:20,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:20,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:32:20,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:20,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:20,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:32:20,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:32:20,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:32:20,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:20,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 17:32:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:20,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:20,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:20,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:20,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:32:20,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:20,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 17:32:20,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:20,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:20,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:20,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:32:20,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:20,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:20,389 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 28 proven. 37 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-28 17:32:20,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10661176] [2020-10-28 17:32:20,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:20,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:32:20,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054567530] [2020-10-28 17:32:20,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:32:20,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:20,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:32:20,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:32:20,392 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-28 17:32:20,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:20,590 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2020-10-28 17:32:20,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:32:20,590 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-10-28 17:32:20,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:20,591 INFO L225 Difference]: With dead ends: 71 [2020-10-28 17:32:20,591 INFO L226 Difference]: Without dead ends: 44 [2020-10-28 17:32:20,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:32:20,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-28 17:32:20,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-28 17:32:20,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 17:32:20,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-28 17:32:20,605 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 62 [2020-10-28 17:32:20,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:20,605 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-28 17:32:20,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:32:20,606 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-28 17:32:20,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 17:32:20,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:20,611 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 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] [2020-10-28 17:32:20,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:32:20,611 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:20,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:20,612 INFO L82 PathProgramCache]: Analyzing trace with hash 54216939, now seen corresponding path program 5 times [2020-10-28 17:32:20,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:20,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297328716] [2020-10-28 17:32:20,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:20,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:20,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:20,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:20,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:22,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:25,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:25,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 17:32:25,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:32:25,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 17:32:25,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:25,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:25,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:32:25,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-28 17:32:25,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:32:25,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:25,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:25,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:25,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:25,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:25,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:25,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:32:25,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:25,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:25,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:25,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:25,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:25,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:25,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:32:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:25,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:25,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:25,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:25,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:32:25,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:25,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 17:32:25,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:25,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:25,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:25,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:25,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:25,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:25,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:32:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:25,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:25,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:25,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:25,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:32:25,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:25,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 17:32:25,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:25,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:25,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:25,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:25,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:25,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:25,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:32:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:25,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:25,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:25,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:32:25,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:25,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:32:25,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:25,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:25,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:32:25,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:32:25,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:32:25,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:25,849 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-28 17:32:25,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297328716] [2020-10-28 17:32:25,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:25,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:32:25,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892158932] [2020-10-28 17:32:25,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:32:25,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:25,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:32:25,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:32:25,852 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 8 states. [2020-10-28 17:32:26,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:26,072 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2020-10-28 17:32:26,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:32:26,073 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-28 17:32:26,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:26,074 INFO L225 Difference]: With dead ends: 75 [2020-10-28 17:32:26,074 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 17:32:26,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:32:26,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 17:32:26,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-28 17:32:26,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 17:32:26,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-28 17:32:26,081 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 68 [2020-10-28 17:32:26,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:26,081 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-28 17:32:26,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:32:26,081 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-28 17:32:26,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 17:32:26,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:26,082 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 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] [2020-10-28 17:32:26,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:32:26,082 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:26,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:26,083 INFO L82 PathProgramCache]: Analyzing trace with hash -861790647, now seen corresponding path program 6 times [2020-10-28 17:32:26,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:26,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722902152] [2020-10-28 17:32:26,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:26,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:26,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:26,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:26,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:29,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:31,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:31,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 17:32:31,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:32:31,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 17:32:31,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:31,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:31,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:32:31,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:32:31,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:32:31,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:31,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:31,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:31,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:31,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:31,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:31,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:32:31,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:31,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:31,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:31,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:31,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:31,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:31,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:32:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:31,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:31,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:31,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:31,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:32:31,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:31,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 17:32:31,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:31,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:31,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:31,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:32:31,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:31,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:31,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 17:32:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:31,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:31,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:31,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:31,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:32:31,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:31,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 17:32:31,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:31,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:31,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:31,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:32:31,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:31,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:31,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 17:32:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:31,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:31,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:31,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:31,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:32:31,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:31,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 17:32:31,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:31,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:31,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:31,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:32:31,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:31,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-10-28 17:32:31,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722902152] [2020-10-28 17:32:31,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:31,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:32:31,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703179254] [2020-10-28 17:32:31,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:32:31,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:31,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:32:31,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:32:31,314 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 7 states. [2020-10-28 17:32:31,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:31,435 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2020-10-28 17:32:31,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:32:31,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-10-28 17:32:31,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:31,436 INFO L225 Difference]: With dead ends: 80 [2020-10-28 17:32:31,436 INFO L226 Difference]: Without dead ends: 48 [2020-10-28 17:32:31,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:32:31,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-28 17:32:31,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-28 17:32:31,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-28 17:32:31,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-28 17:32:31,447 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 74 [2020-10-28 17:32:31,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:31,447 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-28 17:32:31,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:32:31,448 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-28 17:32:31,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 17:32:31,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:31,453 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 4, 4, 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] [2020-10-28 17:32:31,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 17:32:31,454 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:31,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:31,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1083321429, now seen corresponding path program 7 times [2020-10-28 17:32:31,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:31,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967412228] [2020-10-28 17:32:31,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:31,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:31,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:31,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:31,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:34,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:36,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:36,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 17:32:36,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:32:36,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 17:32:36,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:36,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:36,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:32:36,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:32:36,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:32:36,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:36,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:36,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:36,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:36,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:36,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:36,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:32:36,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:36,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:36,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:36,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:36,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:36,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:36,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 17:32:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:36,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:36,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:36,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:36,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:32:36,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:36,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 17:32:36,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:36,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:36,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:36,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:32:36,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:36,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:36,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:32:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:36,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:36,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:36,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:36,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:32:36,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:36,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 17:32:36,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:36,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:36,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:36,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:32:36,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:36,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:36,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:32:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:36,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:36,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:36,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:36,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:32:36,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:36,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 17:32:36,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:36,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:36,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:36,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:32:36,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:36,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:36,676 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-10-28 17:32:36,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967412228] [2020-10-28 17:32:36,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:36,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:32:36,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759888255] [2020-10-28 17:32:36,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:32:36,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:36,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:32:36,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:32:36,678 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 8 states. [2020-10-28 17:32:36,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:36,781 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2020-10-28 17:32:36,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:32:36,781 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-10-28 17:32:36,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:36,782 INFO L225 Difference]: With dead ends: 82 [2020-10-28 17:32:36,782 INFO L226 Difference]: Without dead ends: 50 [2020-10-28 17:32:36,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:32:36,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-28 17:32:36,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-28 17:32:36,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-28 17:32:36,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-28 17:32:36,793 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 76 [2020-10-28 17:32:36,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:36,793 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-28 17:32:36,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:32:36,793 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-28 17:32:36,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 17:32:36,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:36,794 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 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] [2020-10-28 17:32:36,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 17:32:36,794 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:36,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:36,795 INFO L82 PathProgramCache]: Analyzing trace with hash 773961869, now seen corresponding path program 8 times [2020-10-28 17:32:36,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:36,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625832338] [2020-10-28 17:32:36,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:36,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:36,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:36,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:36,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:36,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:39,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:41,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:41,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 17:32:41,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:32:41,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 17:32:41,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:41,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:41,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:32:41,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 17:32:41,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:32:41,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:41,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:41,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:41,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:41,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:41,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:41,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:32:41,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:41,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:41,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:41,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:41,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:41,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:41,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:32:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:41,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:41,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:41,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:41,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:32:41,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:41,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 17:32:41,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:41,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:41,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:41,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:41,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:41,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:41,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 17:32:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:41,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:41,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:41,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:41,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:32:41,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:41,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 17:32:41,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:41,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:41,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:41,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:41,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:41,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:32:41,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:32:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:41,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:42,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:42,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:42,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:32:42,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:42,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 17:32:42,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:42,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:42,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:42,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:32:42,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:42,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:32:42,055 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-28 17:32:42,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625832338] [2020-10-28 17:32:42,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:42,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:32:42,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475180170] [2020-10-28 17:32:42,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:32:42,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:42,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:32:42,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:32:42,058 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2020-10-28 17:32:42,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:42,144 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2020-10-28 17:32:42,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:32:42,144 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-28 17:32:42,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:42,145 INFO L225 Difference]: With dead ends: 75 [2020-10-28 17:32:42,146 INFO L226 Difference]: Without dead ends: 52 [2020-10-28 17:32:42,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:32:42,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-28 17:32:42,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-28 17:32:42,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 17:32:42,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-28 17:32:42,163 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 78 [2020-10-28 17:32:42,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:42,163 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-28 17:32:42,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:32:42,163 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-28 17:32:42,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 17:32:42,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:42,164 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 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] [2020-10-28 17:32:42,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 17:32:42,165 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:42,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:42,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1570956555, now seen corresponding path program 9 times [2020-10-28 17:32:42,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:42,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606618627] [2020-10-28 17:32:42,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:42,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:42,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:42,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:42,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:46,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:47,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:47,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 17:32:47,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:32:47,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 17:32:47,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:47,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:47,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:32:47,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 17:32:47,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:32:47,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:47,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:47,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:47,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:47,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:47,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:47,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:32:47,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:47,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:47,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:47,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:32:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:47,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:47,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:47,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:47,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:32:47,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:47,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 17:32:47,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:47,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:47,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:47,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:47,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:47,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:47,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 17:32:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:47,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:47,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:47,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:47,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:32:47,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:47,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 17:32:47,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:47,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:47,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:47,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:47,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:47,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:47,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 17:32:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:47,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:47,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:47,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:32:47,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:47,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 17:32:47,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:47,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:47,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:32:47,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:32:47,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:32:47,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:32:47,507 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 128 proven. 25 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-10-28 17:32:47,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606618627] [2020-10-28 17:32:47,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:47,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:32:47,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700338859] [2020-10-28 17:32:47,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:32:47,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:47,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:32:47,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:32:47,510 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 9 states. [2020-10-28 17:32:47,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:47,823 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2020-10-28 17:32:47,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:32:47,824 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2020-10-28 17:32:47,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:47,825 INFO L225 Difference]: With dead ends: 87 [2020-10-28 17:32:47,825 INFO L226 Difference]: Without dead ends: 54 [2020-10-28 17:32:47,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:32:47,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-28 17:32:47,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-28 17:32:47,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-28 17:32:47,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-28 17:32:47,832 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 80 [2020-10-28 17:32:47,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:47,832 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-28 17:32:47,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:32:47,833 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-28 17:32:47,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 17:32:47,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:47,834 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 5, 5, 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] [2020-10-28 17:32:47,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 17:32:47,834 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:47,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:47,835 INFO L82 PathProgramCache]: Analyzing trace with hash -2099887767, now seen corresponding path program 10 times [2020-10-28 17:32:47,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:47,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086599231] [2020-10-28 17:32:47,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:47,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:47,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:47,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:47,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:52,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:52,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 17:32:52,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:32:52,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 17:32:52,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:52,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:52,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:32:52,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 17:32:52,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:32:52,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:52,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:52,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:52,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:52,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:52,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:52,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:32:52,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:52,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:52,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:52,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:52,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:52,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:52,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:32:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:52,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:52,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:52,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:32:52,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:52,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 17:32:52,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:52,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:52,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:32:52,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:32:52,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:32:52,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:53,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 17:32:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:53,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:53,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:53,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:53,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:32:53,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:53,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 17:32:53,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:53,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:53,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:53,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:32:53,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:53,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:32:53,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:32:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:53,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:53,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:53,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:53,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:32:53,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:53,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 17:32:53,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:53,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:53,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:53,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:32:53,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:53,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:53,223 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2020-10-28 17:32:53,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086599231] [2020-10-28 17:32:53,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:53,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:32:53,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898724069] [2020-10-28 17:32:53,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:32:53,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:53,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:32:53,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:32:53,229 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 10 states. [2020-10-28 17:32:53,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:53,591 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2020-10-28 17:32:53,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:32:53,593 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-10-28 17:32:53,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:53,594 INFO L225 Difference]: With dead ends: 91 [2020-10-28 17:32:53,594 INFO L226 Difference]: Without dead ends: 56 [2020-10-28 17:32:53,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:32:53,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-28 17:32:53,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-28 17:32:53,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 17:32:53,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-28 17:32:53,612 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 86 [2020-10-28 17:32:53,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:53,612 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-28 17:32:53,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:32:53,612 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-28 17:32:53,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 17:32:53,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:53,614 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 5, 5, 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] [2020-10-28 17:32:53,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 17:32:53,614 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:53,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:53,614 INFO L82 PathProgramCache]: Analyzing trace with hash -773972153, now seen corresponding path program 11 times [2020-10-28 17:32:53,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:53,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122526554] [2020-10-28 17:32:53,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:53,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:53,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:53,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:53,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:58,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:58,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 17:32:58,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:32:58,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 17:32:58,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:58,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:58,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:32:58,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:32:58,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:32:58,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:58,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:58,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:58,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:58,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:58,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:58,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:32:58,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:58,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:58,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:58,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:32:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:58,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:58,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:58,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:58,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:32:58,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:58,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 17:32:58,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:58,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:58,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:58,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:32:58,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:58,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:58,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 17:32:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:58,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:58,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:58,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:58,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:32:58,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:58,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 17:32:58,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:58,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:58,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:58,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:32:58,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:58,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:58,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:32:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:58,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:58,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:59,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:59,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:32:59,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:59,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 17:32:59,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:59,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:59,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:59,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:32:59,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:59,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:59,041 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2020-10-28 17:32:59,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122526554] [2020-10-28 17:32:59,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:59,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:32:59,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573745921] [2020-10-28 17:32:59,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:32:59,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:59,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:32:59,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:32:59,043 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 9 states. [2020-10-28 17:32:59,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:59,160 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-10-28 17:32:59,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:32:59,161 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-28 17:32:59,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:59,164 INFO L225 Difference]: With dead ends: 96 [2020-10-28 17:32:59,165 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 17:32:59,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:32:59,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 17:32:59,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-28 17:32:59,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 17:32:59,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-28 17:32:59,173 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 92 [2020-10-28 17:32:59,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:59,173 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-28 17:32:59,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:32:59,173 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-28 17:32:59,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-28 17:32:59,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:59,177 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 6, 6, 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] [2020-10-28 17:32:59,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 17:32:59,177 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:59,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:59,178 INFO L82 PathProgramCache]: Analyzing trace with hash -96468951, now seen corresponding path program 12 times [2020-10-28 17:32:59,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:59,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372313778] [2020-10-28 17:32:59,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:59,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:59,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:59,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:59,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:04,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:04,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 17:33:04,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:04,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 17:33:04,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:04,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:04,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:33:04,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:33:04,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:33:04,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:04,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:04,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:04,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:04,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:04,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:04,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:04,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:04,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:04,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:04,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:04,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:04,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:04,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 17:33:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:04,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:04,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:04,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:04,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:33:04,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:04,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 17:33:04,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:04,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:04,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:04,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:33:04,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:04,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:04,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:33:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:04,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:04,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:04,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:04,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:33:04,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:04,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 17:33:04,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:04,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:04,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:04,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:33:04,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:04,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:04,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:33:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:04,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:04,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:04,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:04,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:33:04,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:04,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 17:33:04,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:04,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:04,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:04,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:33:04,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:04,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:04,570 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2020-10-28 17:33:04,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372313778] [2020-10-28 17:33:04,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:04,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:33:04,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991912894] [2020-10-28 17:33:04,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:33:04,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:04,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:33:04,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:33:04,572 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 10 states. [2020-10-28 17:33:04,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:04,702 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2020-10-28 17:33:04,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:33:04,702 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-28 17:33:04,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:04,703 INFO L225 Difference]: With dead ends: 98 [2020-10-28 17:33:04,703 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 17:33:04,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:33:04,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 17:33:04,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-28 17:33:04,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-28 17:33:04,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-28 17:33:04,719 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 94 [2020-10-28 17:33:04,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:04,719 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-28 17:33:04,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:33:04,720 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-28 17:33:04,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 17:33:04,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:04,722 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 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] [2020-10-28 17:33:04,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 17:33:04,723 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:04,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:04,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1850920821, now seen corresponding path program 13 times [2020-10-28 17:33:04,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:04,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65828213] [2020-10-28 17:33:04,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:04,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:04,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:04,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:04,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:09,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:09,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 17:33:09,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:09,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 17:33:09,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:09,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:09,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:33:09,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 17:33:09,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:33:09,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:09,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:09,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:09,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:09,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:09,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:09,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:09,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:09,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:09,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:09,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:09,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:09,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:09,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 17:33:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:09,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:09,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:09,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:09,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:33:09,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:09,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 17:33:09,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:09,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:09,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:09,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:33:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:09,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:09,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:09,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:09,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:33:09,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:09,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 17:33:09,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:09,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:09,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:09,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:09,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:09,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:09,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 17:33:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:09,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:09,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:10,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:10,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:33:10,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:10,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 17:33:10,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:10,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:33:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:10,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:10,020 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-28 17:33:10,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65828213] [2020-10-28 17:33:10,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:10,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:33:10,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445245788] [2020-10-28 17:33:10,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:33:10,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:10,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:33:10,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:33:10,023 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 7 states. [2020-10-28 17:33:10,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:10,147 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2020-10-28 17:33:10,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:33:10,148 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-28 17:33:10,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:10,149 INFO L225 Difference]: With dead ends: 89 [2020-10-28 17:33:10,149 INFO L226 Difference]: Without dead ends: 62 [2020-10-28 17:33:10,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:33:10,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-28 17:33:10,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-28 17:33:10,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 17:33:10,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-28 17:33:10,161 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 96 [2020-10-28 17:33:10,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:10,161 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-28 17:33:10,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:33:10,161 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-28 17:33:10,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 17:33:10,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:10,162 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 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] [2020-10-28 17:33:10,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 17:33:10,163 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:10,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:10,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1286956425, now seen corresponding path program 14 times [2020-10-28 17:33:10,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:10,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544390199] [2020-10-28 17:33:10,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:10,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:10,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:10,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:10,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:15,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:15,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 17:33:15,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:15,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 17:33:15,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:15,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:15,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:33:15,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 17:33:15,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:33:15,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:15,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:15,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:15,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:15,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:15,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:15,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:15,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:15,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:15,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:15,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 17:33:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:15,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:15,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:15,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:33:15,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:15,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 17:33:15,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:15,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:15,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:33:15,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:33:15,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:33:15,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:15,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:33:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:15,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:15,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:15,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:15,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:33:15,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:15,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 17:33:15,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:15,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:15,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:15,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:33:15,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:15,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:15,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:33:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:15,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:15,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:15,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:15,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:33:15,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:15,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 17:33:15,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:15,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:15,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:15,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:33:15,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:15,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:15,452 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2020-10-28 17:33:15,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544390199] [2020-10-28 17:33:15,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:15,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:33:15,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708278623] [2020-10-28 17:33:15,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:33:15,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:15,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:33:15,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:33:15,453 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 11 states. [2020-10-28 17:33:15,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:15,801 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2020-10-28 17:33:15,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:33:15,802 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-10-28 17:33:15,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:15,802 INFO L225 Difference]: With dead ends: 103 [2020-10-28 17:33:15,803 INFO L226 Difference]: Without dead ends: 64 [2020-10-28 17:33:15,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:33:15,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-28 17:33:15,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-28 17:33:15,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-28 17:33:15,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-28 17:33:15,810 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 98 [2020-10-28 17:33:15,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:15,810 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-28 17:33:15,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:33:15,810 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-28 17:33:15,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 17:33:15,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:15,812 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 7, 7, 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] [2020-10-28 17:33:15,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 17:33:15,812 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:15,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:15,812 INFO L82 PathProgramCache]: Analyzing trace with hash 375589479, now seen corresponding path program 15 times [2020-10-28 17:33:15,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:15,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024154167] [2020-10-28 17:33:15,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:15,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:15,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:15,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:15,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:20,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:20,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 17:33:20,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:20,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 17:33:20,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:20,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:20,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:33:20,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:33:20,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:33:20,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:20,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:20,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:20,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:20,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:20,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:20,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:20,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:20,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:20,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:20,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:20,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:20,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:20,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 17:33:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:20,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:20,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:21,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:21,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:33:21,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:21,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 17:33:21,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:21,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:21,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:21,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:33:21,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:21,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:21,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 17:33:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:21,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:21,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:21,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:21,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:33:21,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:21,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 17:33:21,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:21,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:33:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:21,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:21,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 17:33:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:21,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:21,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:21,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:21,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:33:21,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:21,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 17:33:21,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:21,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:21,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:21,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:33:21,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:21,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:21,154 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2020-10-28 17:33:21,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024154167] [2020-10-28 17:33:21,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:21,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:33:21,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763256790] [2020-10-28 17:33:21,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:33:21,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:21,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:33:21,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:33:21,156 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 11 states. [2020-10-28 17:33:21,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:21,312 INFO L93 Difference]: Finished difference Result 108 states and 116 transitions. [2020-10-28 17:33:21,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:33:21,312 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-28 17:33:21,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:21,313 INFO L225 Difference]: With dead ends: 108 [2020-10-28 17:33:21,313 INFO L226 Difference]: Without dead ends: 66 [2020-10-28 17:33:21,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:33:21,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-28 17:33:21,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-28 17:33:21,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-28 17:33:21,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-28 17:33:21,319 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 104 [2020-10-28 17:33:21,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:21,319 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-28 17:33:21,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:33:21,319 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-28 17:33:21,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 17:33:21,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:21,320 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 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] [2020-10-28 17:33:21,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 17:33:21,321 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:21,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:21,321 INFO L82 PathProgramCache]: Analyzing trace with hash -358569911, now seen corresponding path program 16 times [2020-10-28 17:33:21,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:21,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563175978] [2020-10-28 17:33:21,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:21,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:21,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:21,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:21,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:26,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:26,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 17:33:26,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:26,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 17:33:26,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:26,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:33:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 17:33:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:33:26,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:26,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:26,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:26,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:26,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:26,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:26,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:26,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:26,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:26,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:26,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:26,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:26,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:26,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:33:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:26,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:26,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:26,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:26,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:33:26,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:26,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 17:33:26,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:26,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:26,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:26,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:26,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:26,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:26,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:33:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:26,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:26,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:26,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:26,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:33:26,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:26,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 17:33:26,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:26,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:26,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:26,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:26,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:26,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:26,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:33:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:26,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:26,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:26,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:26,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:33:26,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:26,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 17:33:26,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:26,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:26,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:26,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:33:26,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:26,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:26,640 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-28 17:33:26,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563175978] [2020-10-28 17:33:26,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:26,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:33:26,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177848102] [2020-10-28 17:33:26,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:33:26,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:26,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:33:26,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:33:26,643 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 8 states. [2020-10-28 17:33:26,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:26,752 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2020-10-28 17:33:26,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:33:26,753 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 106 [2020-10-28 17:33:26,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:26,755 INFO L225 Difference]: With dead ends: 97 [2020-10-28 17:33:26,755 INFO L226 Difference]: Without dead ends: 68 [2020-10-28 17:33:26,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:33:26,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-28 17:33:26,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-28 17:33:26,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-28 17:33:26,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-28 17:33:26,761 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 106 [2020-10-28 17:33:26,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:26,762 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-28 17:33:26,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:33:26,762 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-28 17:33:26,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 17:33:26,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:26,763 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 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] [2020-10-28 17:33:26,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 17:33:26,763 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:26,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:26,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1219924537, now seen corresponding path program 17 times [2020-10-28 17:33:26,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:26,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752857980] [2020-10-28 17:33:26,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:26,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:26,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:26,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:26,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:31,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:31,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 17:33:31,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:31,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 17:33:31,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:31,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:31,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:33:31,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:33:31,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:33:31,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:31,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:31,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:31,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:31,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:31,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:31,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:31,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:31,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:31,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:31,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:33:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:31,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:31,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:31,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:31,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:33:31,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:31,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 17:33:31,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:31,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:31,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:31,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:33:31,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:31,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:31,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:33:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:31,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:31,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:32,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:32,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:33:32,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:32,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 17:33:32,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:32,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:32,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:32,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:33:32,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:32,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:32,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 17:33:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:32,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:32,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:32,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:32,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:33:32,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:32,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 17:33:32,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:32,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:32,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:32,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:33:32,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:32,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2020-10-28 17:33:32,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752857980] [2020-10-28 17:33:32,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:32,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 17:33:32,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899167030] [2020-10-28 17:33:32,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:33:32,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:32,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:33:32,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:33:32,094 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 12 states. [2020-10-28 17:33:32,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:32,260 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2020-10-28 17:33:32,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:33:32,261 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-10-28 17:33:32,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:32,262 INFO L225 Difference]: With dead ends: 114 [2020-10-28 17:33:32,263 INFO L226 Difference]: Without dead ends: 70 [2020-10-28 17:33:32,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:33:32,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-28 17:33:32,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-28 17:33:32,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-28 17:33:32,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-28 17:33:32,271 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 108 [2020-10-28 17:33:32,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:32,271 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-28 17:33:32,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:33:32,272 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-28 17:33:32,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 17:33:32,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:32,273 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 9, 9, 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] [2020-10-28 17:33:32,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 17:33:32,273 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:32,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:32,274 INFO L82 PathProgramCache]: Analyzing trace with hash -706655575, now seen corresponding path program 18 times [2020-10-28 17:33:32,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:32,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685877135] [2020-10-28 17:33:32,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:32,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:32,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:32,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:32,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:37,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:37,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 17:33:37,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:37,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 17:33:37,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:37,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:37,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:33:37,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:33:37,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 17:33:37,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:37,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:37,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:37,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:37,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:37,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:37,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:33:37,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:37,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:37,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:37,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:33:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:37,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:37,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:37,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:37,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:33:37,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:37,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 17:33:37,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:37,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:37,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:37,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:33:37,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:37,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:37,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:33:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:37,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:37,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:37,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:37,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:33:37,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:37,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 17:33:37,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:37,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:37,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:37,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:33:37,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:37,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:37,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 17:33:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:37,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:37,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:37,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:37,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:33:37,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:37,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 17:33:37,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:37,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:37,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:37,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:33:37,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:37,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:37,644 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2020-10-28 17:33:37,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685877135] [2020-10-28 17:33:37,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:37,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 17:33:37,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573140136] [2020-10-28 17:33:37,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:33:37,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:37,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:33:37,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:33:37,646 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 13 states. [2020-10-28 17:33:37,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:37,807 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2020-10-28 17:33:37,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:33:37,807 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 110 [2020-10-28 17:33:37,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:37,808 INFO L225 Difference]: With dead ends: 116 [2020-10-28 17:33:37,809 INFO L226 Difference]: Without dead ends: 72 [2020-10-28 17:33:37,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:33:37,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-28 17:33:37,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-28 17:33:37,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-28 17:33:37,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-28 17:33:37,816 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 110 [2020-10-28 17:33:37,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:37,816 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-28 17:33:37,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:33:37,816 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-28 17:33:37,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 17:33:37,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:37,817 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 10, 10, 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] [2020-10-28 17:33:37,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 17:33:37,817 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:37,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:37,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1376422133, now seen corresponding path program 19 times [2020-10-28 17:33:37,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:37,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208179675] [2020-10-28 17:33:37,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:37,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:37,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:37,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:38,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:42,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:42,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 17:33:42,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:42,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 17:33:42,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:42,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:33:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-28 17:33:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:33:42,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:42,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:42,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:42,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:42,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:42,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:42,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:42,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:42,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:42,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:42,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:33:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:42,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:42,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:42,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:42,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:33:42,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:42,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 17:33:42,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:42,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:42,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:42,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:42,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:42,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:42,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 17:33:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:42,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:42,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:42,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:33:42,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:42,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 17:33:42,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:42,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:42,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:33:42,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:33:42,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:33:42,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:43,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 17:33:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:43,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:43,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:43,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:43,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:33:43,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:43,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 17:33:43,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:43,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:43,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:43,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:33:43,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:43,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:43,157 INFO L134 CoverageAnalysis]: Checked inductivity of 764 backedges. 148 proven. 212 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2020-10-28 17:33:43,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208179675] [2020-10-28 17:33:43,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:43,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 17:33:43,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312608966] [2020-10-28 17:33:43,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:33:43,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:43,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:33:43,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:33:43,159 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-28 17:33:43,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:43,529 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-10-28 17:33:43,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:33:43,530 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-10-28 17:33:43,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:43,531 INFO L225 Difference]: With dead ends: 117 [2020-10-28 17:33:43,531 INFO L226 Difference]: Without dead ends: 74 [2020-10-28 17:33:43,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-28 17:33:43,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-28 17:33:43,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-28 17:33:43,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-28 17:33:43,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-28 17:33:43,537 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 112 [2020-10-28 17:33:43,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:43,537 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-28 17:33:43,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:33:43,538 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-28 17:33:43,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-28 17:33:43,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:43,539 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 10, 10, 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] [2020-10-28 17:33:43,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 17:33:43,539 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:43,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:43,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1906413929, now seen corresponding path program 20 times [2020-10-28 17:33:43,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:43,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677479673] [2020-10-28 17:33:43,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:43,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:43,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:43,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:43,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:48,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:48,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 17:33:48,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:48,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-28 17:33:48,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:48,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:48,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:33:48,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 17:33:48,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 17:33:48,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:48,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:48,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:48,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:48,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:48,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:48,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:48,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:48,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:48,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:48,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:48,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:48,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:48,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:33:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:48,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:48,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:48,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 17:33:48,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:48,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 17:33:48,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:48,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:48,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:33:48,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:33:48,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 17:33:48,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:48,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 17:33:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:48,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:48,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:48,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:48,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 17:33:48,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:48,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 17:33:48,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:48,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:48,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:48,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 17:33:48,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:48,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:48,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 17:33:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:48,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:48,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:48,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:48,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 17:33:48,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:48,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 17:33:48,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:48,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:48,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:48,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 17:33:48,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:48,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:48,934 INFO L134 CoverageAnalysis]: Checked inductivity of 923 backedges. 0 proven. 449 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2020-10-28 17:33:48,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677479673] [2020-10-28 17:33:48,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:48,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 17:33:48,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163961996] [2020-10-28 17:33:48,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:33:48,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:48,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:33:48,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:33:48,936 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 13 states. [2020-10-28 17:33:49,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:49,316 INFO L93 Difference]: Finished difference Result 121 states and 131 transitions. [2020-10-28 17:33:49,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:33:49,316 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 118 [2020-10-28 17:33:49,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:49,317 INFO L225 Difference]: With dead ends: 121 [2020-10-28 17:33:49,318 INFO L226 Difference]: Without dead ends: 76 [2020-10-28 17:33:49,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:33:49,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-28 17:33:49,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-28 17:33:49,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-28 17:33:49,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-28 17:33:49,329 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 118 [2020-10-28 17:33:49,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:49,330 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-28 17:33:49,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:33:49,330 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-28 17:33:49,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 17:33:49,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:49,334 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 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] [2020-10-28 17:33:49,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 17:33:49,335 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:49,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:49,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1321063097, now seen corresponding path program 21 times [2020-10-28 17:33:49,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:49,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073523487] [2020-10-28 17:33:49,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:49,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:49,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:49,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:49,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:54,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:54,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 17:33:54,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:54,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-28 17:33:54,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:54,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:54,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:33:54,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 17:33:54,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:33:54,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:54,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:54,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:54,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:54,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:54,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:54,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:54,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:54,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:54,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:54,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:54,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:54,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:54,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:33:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:54,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:54,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:54,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:54,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:33:54,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:54,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 17:33:54,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:54,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:54,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:54,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:54,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:54,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:54,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:33:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:54,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:54,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:54,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:54,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:33:54,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:54,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 17:33:54,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:54,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:54,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:54,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:54,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:54,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:54,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 17:33:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:54,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:54,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:54,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:54,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:33:54,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:54,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 17:33:54,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:54,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:33:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:54,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-10-28 17:33:54,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-28 17:33:54,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073523487] [2020-10-28 17:33:54,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:54,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:33:54,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605699115] [2020-10-28 17:33:54,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:33:54,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:54,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:33:54,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:33:54,711 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 9 states. [2020-10-28 17:33:54,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:54,843 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2020-10-28 17:33:54,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:33:54,844 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 124 [2020-10-28 17:33:54,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:54,845 INFO L225 Difference]: With dead ends: 111 [2020-10-28 17:33:54,845 INFO L226 Difference]: Without dead ends: 78 [2020-10-28 17:33:54,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:33:54,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-28 17:33:54,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-28 17:33:54,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-28 17:33:54,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-28 17:33:54,854 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 124 [2020-10-28 17:33:54,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:54,855 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-28 17:33:54,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:33:54,855 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-28 17:33:54,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-28 17:33:54,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:54,856 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 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] [2020-10-28 17:33:54,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 17:33:54,857 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:54,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:54,857 INFO L82 PathProgramCache]: Analyzing trace with hash -938034363, now seen corresponding path program 22 times [2020-10-28 17:33:54,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:54,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360881139] [2020-10-28 17:33:54,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:54,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:54,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:54,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:55,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:59,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:59,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 17:33:59,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:59,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 17:33:59,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:59,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:33:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 17:33:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:33:59,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:59,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:59,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:59,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:59,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:59,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:59,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:59,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:59,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:59,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:59,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:59,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:59,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:59,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:33:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:59,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:59,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:59,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:33:59,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:59,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 17:33:59,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:59,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:59,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:33:59,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:33:59,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:33:59,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:00,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:34:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:00,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:00,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:00,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:00,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:34:00,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:00,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 17:34:00,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:00,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:00,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:00,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:34:00,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:00,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:00,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 17:34:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:00,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:00,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:00,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:00,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:34:00,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:00,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 17:34:00,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:00,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:00,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:00,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:34:00,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:00,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:00,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 548 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2020-10-28 17:34:00,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360881139] [2020-10-28 17:34:00,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:00,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 17:34:00,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131724672] [2020-10-28 17:34:00,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 17:34:00,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:00,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 17:34:00,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:34:00,276 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 14 states. [2020-10-28 17:34:00,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:00,715 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2020-10-28 17:34:00,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:34:00,716 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 126 [2020-10-28 17:34:00,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:00,717 INFO L225 Difference]: With dead ends: 129 [2020-10-28 17:34:00,717 INFO L226 Difference]: Without dead ends: 80 [2020-10-28 17:34:00,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-28 17:34:00,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-28 17:34:00,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-28 17:34:00,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-28 17:34:00,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-28 17:34:00,724 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 126 [2020-10-28 17:34:00,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:00,725 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-28 17:34:00,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 17:34:00,725 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-28 17:34:00,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 17:34:00,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:00,726 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 10, 10, 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] [2020-10-28 17:34:00,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 17:34:00,726 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:00,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:00,727 INFO L82 PathProgramCache]: Analyzing trace with hash -791420637, now seen corresponding path program 23 times [2020-10-28 17:34:00,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:00,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242280236] [2020-10-28 17:34:00,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:00,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:00,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:00,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:00,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:05,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:05,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 17:34:05,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:05,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-28 17:34:05,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:05,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:05,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:34:05,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:34:05,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:34:05,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:05,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:05,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:05,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:05,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:05,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:05,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:34:05,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:05,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:05,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:05,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:05,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:05,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:05,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:34:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:05,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:05,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:06,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:06,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:34:06,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:06,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 17:34:06,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:06,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:06,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:06,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 17:34:06,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:06,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:06,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:34:06,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:06,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:06,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:06,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:06,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:34:06,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:06,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 17:34:06,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:06,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:06,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:06,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 17:34:06,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:06,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:06,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 17:34:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:06,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:06,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:06,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:06,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:34:06,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:06,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 17:34:06,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:06,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:06,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:06,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 17:34:06,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:06,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:06,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1206 trivial. 0 not checked. [2020-10-28 17:34:06,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242280236] [2020-10-28 17:34:06,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:06,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 17:34:06,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744959435] [2020-10-28 17:34:06,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 17:34:06,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:06,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 17:34:06,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:34:06,274 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 14 states. [2020-10-28 17:34:06,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:06,433 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-10-28 17:34:06,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:34:06,433 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-28 17:34:06,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:06,434 INFO L225 Difference]: With dead ends: 134 [2020-10-28 17:34:06,434 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 17:34:06,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:34:06,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 17:34:06,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-28 17:34:06,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-28 17:34:06,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-28 17:34:06,442 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 132 [2020-10-28 17:34:06,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:06,442 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-28 17:34:06,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 17:34:06,442 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-28 17:34:06,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 17:34:06,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:06,443 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 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] [2020-10-28 17:34:06,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 17:34:06,443 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:06,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:06,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1891911675, now seen corresponding path program 24 times [2020-10-28 17:34:06,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:06,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090920077] [2020-10-28 17:34:06,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:06,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:06,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:06,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:06,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:11,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:11,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 17:34:11,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:11,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-28 17:34:11,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:11,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:11,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:34:11,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-28 17:34:11,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:34:11,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:11,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:11,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:11,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:11,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:11,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:11,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:34:11,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:11,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:11,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:11,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:11,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:11,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:11,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 17:34:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:11,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:11,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:11,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:11,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:34:11,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:11,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 17:34:11,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:11,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:11,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:11,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:11,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:11,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:11,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:34:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:11,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:11,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:11,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:11,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:34:11,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:11,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 17:34:11,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:11,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:11,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:11,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:11,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:11,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:11,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 17:34:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:11,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:11,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:11,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:11,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:34:11,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:11,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 17:34:11,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:11,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:11,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:11,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 17:34:11,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:11,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:11,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1327 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-28 17:34:11,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090920077] [2020-10-28 17:34:11,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:11,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:34:11,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539166033] [2020-10-28 17:34:11,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:34:11,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:11,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:34:11,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:34:11,898 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 10 states. [2020-10-28 17:34:12,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:12,027 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2020-10-28 17:34:12,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:34:12,028 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-10-28 17:34:12,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:12,029 INFO L225 Difference]: With dead ends: 119 [2020-10-28 17:34:12,029 INFO L226 Difference]: Without dead ends: 84 [2020-10-28 17:34:12,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:34:12,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-28 17:34:12,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-28 17:34:12,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-28 17:34:12,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-28 17:34:12,036 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 134 [2020-10-28 17:34:12,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:12,037 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-28 17:34:12,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:34:12,037 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-28 17:34:12,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 17:34:12,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:12,038 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 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] [2020-10-28 17:34:12,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 17:34:12,038 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:12,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:12,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1431169405, now seen corresponding path program 25 times [2020-10-28 17:34:12,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:12,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914765337] [2020-10-28 17:34:12,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:12,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:12,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:12,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:12,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:17,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:17,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 17:34:17,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:17,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 17:34:17,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:17,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:17,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:34:17,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 17:34:17,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 17:34:17,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:17,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:17,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:17,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:17,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:17,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:17,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:34:17,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:17,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:17,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:17,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 17:34:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:17,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:17,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:17,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:17,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:34:17,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:17,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 17:34:17,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:17,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:17,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:17,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:17,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:17,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:17,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:34:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:17,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:17,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:17,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:34:17,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:17,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 17:34:17,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:17,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:17,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:34:17,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:34:17,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 17:34:17,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:17,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 17:34:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:17,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:17,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:17,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:17,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:34:17,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:17,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 17:34:17,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:17,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:17,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:17,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 17:34:17,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:17,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:17,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 268 proven. 389 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2020-10-28 17:34:17,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914765337] [2020-10-28 17:34:17,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:17,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:34:17,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331475812] [2020-10-28 17:34:17,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:34:17,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:17,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:34:17,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:34:17,528 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 15 states. [2020-10-28 17:34:18,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:18,046 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2020-10-28 17:34:18,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:34:18,047 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 136 [2020-10-28 17:34:18,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:18,048 INFO L225 Difference]: With dead ends: 139 [2020-10-28 17:34:18,049 INFO L226 Difference]: Without dead ends: 86 [2020-10-28 17:34:18,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-28 17:34:18,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-28 17:34:18,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-28 17:34:18,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-28 17:34:18,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-28 17:34:18,057 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 136 [2020-10-28 17:34:18,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:18,057 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-28 17:34:18,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:34:18,057 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-28 17:34:18,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-28 17:34:18,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:18,058 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 11, 11, 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] [2020-10-28 17:34:18,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 17:34:18,059 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:18,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:18,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1394510623, now seen corresponding path program 26 times [2020-10-28 17:34:18,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:18,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713178514] [2020-10-28 17:34:18,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:18,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:18,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:18,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:18,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:23,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:23,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 17:34:23,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:23,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-28 17:34:23,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:23,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:23,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:34:23,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 17:34:23,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 17:34:23,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:23,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:23,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:23,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:23,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:23,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:23,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:34:23,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:23,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:23,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:23,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:23,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:23,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:23,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 17:34:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:23,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:23,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:23,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:34:23,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:23,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 17:34:23,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:23,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:23,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:34:23,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:34:23,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 17:34:23,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:23,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:34:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:23,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:23,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:23,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:23,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:34:23,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:23,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 17:34:23,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:23,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:23,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:23,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 17:34:23,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:23,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:23,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-28 17:34:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:23,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:23,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:23,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:23,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:34:23,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:23,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 17:34:23,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:23,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:23,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:23,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 17:34:23,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:23,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:23,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1553 backedges. 0 proven. 776 refuted. 0 times theorem prover too weak. 777 trivial. 0 not checked. [2020-10-28 17:34:23,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713178514] [2020-10-28 17:34:23,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:23,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 17:34:23,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283095609] [2020-10-28 17:34:23,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 17:34:23,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:23,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 17:34:23,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:34:23,597 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 16 states. [2020-10-28 17:34:24,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:24,101 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2020-10-28 17:34:24,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:34:24,102 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 142 [2020-10-28 17:34:24,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:24,103 INFO L225 Difference]: With dead ends: 143 [2020-10-28 17:34:24,103 INFO L226 Difference]: Without dead ends: 88 [2020-10-28 17:34:24,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-28 17:34:24,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-28 17:34:24,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-28 17:34:24,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-28 17:34:24,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-28 17:34:24,110 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 142 [2020-10-28 17:34:24,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:24,111 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-28 17:34:24,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 17:34:24,111 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-28 17:34:24,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-28 17:34:24,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:24,112 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 11, 11, 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] [2020-10-28 17:34:24,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 17:34:24,113 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:24,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:24,113 INFO L82 PathProgramCache]: Analyzing trace with hash -544680769, now seen corresponding path program 27 times [2020-10-28 17:34:24,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:24,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356827955] [2020-10-28 17:34:24,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:24,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:24,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:24,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:25,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:29,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:29,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 17:34:29,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:29,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-28 17:34:29,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:29,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:29,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:34:29,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:34:29,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 17:34:29,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:29,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:29,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:29,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:29,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:29,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:29,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:34:29,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:29,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:29,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:29,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:29,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:29,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:29,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 17:34:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:29,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:29,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:29,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:29,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:34:29,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:29,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 17:34:29,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:29,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:29,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:29,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 17:34:29,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:29,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:29,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:34:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:29,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:29,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:29,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:29,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:34:29,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:29,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 17:34:29,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:29,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 17:34:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:29,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:29,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 17:34:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:29,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:29,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:29,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:29,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:34:29,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:29,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 17:34:29,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:29,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:29,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:29,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 17:34:29,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:29,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1784 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1663 trivial. 0 not checked. [2020-10-28 17:34:29,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356827955] [2020-10-28 17:34:29,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:29,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:34:29,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451198522] [2020-10-28 17:34:29,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:34:29,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:29,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:34:29,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:34:29,674 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 15 states. [2020-10-28 17:34:29,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:29,848 INFO L93 Difference]: Finished difference Result 148 states and 156 transitions. [2020-10-28 17:34:29,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:34:29,849 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2020-10-28 17:34:29,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:29,850 INFO L225 Difference]: With dead ends: 148 [2020-10-28 17:34:29,850 INFO L226 Difference]: Without dead ends: 90 [2020-10-28 17:34:29,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:34:29,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-28 17:34:29,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-28 17:34:29,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-28 17:34:29,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-28 17:34:29,859 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 148 [2020-10-28 17:34:29,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:29,859 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-28 17:34:29,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:34:29,859 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-28 17:34:29,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-28 17:34:29,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:29,860 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 12, 12, 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] [2020-10-28 17:34:29,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 17:34:29,861 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:29,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:29,861 INFO L82 PathProgramCache]: Analyzing trace with hash 628795297, now seen corresponding path program 28 times [2020-10-28 17:34:29,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:29,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172597280] [2020-10-28 17:34:29,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:29,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:29,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:29,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:30,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:34,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:34,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 17:34:34,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:34,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 17:34:34,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:34,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:34,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:34:34,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:34:34,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 17:34:34,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:35,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:35,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:35,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:35,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:35,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:35,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:34:35,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:35,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:35,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:35,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:35,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:35,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:35,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 17:34:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:35,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:35,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:35,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:35,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:34:35,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:35,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 17:34:35,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:35,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:35,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:35,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 17:34:35,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:35,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:35,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 17:34:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:35,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:35,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:35,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:35,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:34:35,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:35,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 17:34:35,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:35,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:35,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:35,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 17:34:35,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:35,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:35,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 17:34:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:35,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:35,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:35,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:35,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:34:35,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:35,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 17:34:35,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:35,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:35,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:35,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 17:34:35,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:35,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:35,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1663 trivial. 0 not checked. [2020-10-28 17:34:35,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172597280] [2020-10-28 17:34:35,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:35,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 17:34:35,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35593477] [2020-10-28 17:34:35,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 17:34:35,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:35,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 17:34:35,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:34:35,428 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 16 states. [2020-10-28 17:34:35,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:35,599 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2020-10-28 17:34:35,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:34:35,599 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 150 [2020-10-28 17:34:35,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:35,600 INFO L225 Difference]: With dead ends: 150 [2020-10-28 17:34:35,600 INFO L226 Difference]: Without dead ends: 92 [2020-10-28 17:34:35,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:34:35,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-28 17:34:35,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-28 17:34:35,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-28 17:34:35,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-28 17:34:35,607 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 150 [2020-10-28 17:34:35,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:35,607 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-28 17:34:35,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 17:34:35,607 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-28 17:34:35,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 17:34:35,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:35,608 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 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] [2020-10-28 17:34:35,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 17:34:35,609 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:35,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:35,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1237104125, now seen corresponding path program 29 times [2020-10-28 17:34:35,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:35,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001666604] [2020-10-28 17:34:35,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:35,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:35,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:35,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:36,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:40,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:40,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 17:34:40,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:40,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 17:34:40,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:40,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:40,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:34:40,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 17:34:40,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:34:40,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:40,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:40,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:40,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:40,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:40,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:40,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:34:40,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:40,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:40,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:40,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:40,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:40,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:40,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 17:34:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:40,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:40,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:40,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:40,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:34:40,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:40,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 17:34:40,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:40,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:40,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:40,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:40,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:40,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:40,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:34:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:40,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:40,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:40,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:40,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:34:41,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:41,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 17:34:41,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:41,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:41,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:41,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:41,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:41,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:41,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-28 17:34:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:41,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:41,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:41,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:41,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:34:41,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:41,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 17:34:41,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:41,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:41,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:41,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 17:34:41,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:41,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:41,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1832 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2020-10-28 17:34:41,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001666604] [2020-10-28 17:34:41,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:41,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:34:41,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840756782] [2020-10-28 17:34:41,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:34:41,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:41,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:34:41,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:34:41,149 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 11 states. [2020-10-28 17:34:41,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:41,272 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2020-10-28 17:34:41,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:34:41,273 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 152 [2020-10-28 17:34:41,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:41,274 INFO L225 Difference]: With dead ends: 133 [2020-10-28 17:34:41,274 INFO L226 Difference]: Without dead ends: 94 [2020-10-28 17:34:41,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:34:41,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-28 17:34:41,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-28 17:34:41,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-28 17:34:41,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-28 17:34:41,290 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 152 [2020-10-28 17:34:41,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:41,290 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-28 17:34:41,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:34:41,291 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-28 17:34:41,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 17:34:41,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:41,292 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 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] [2020-10-28 17:34:41,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 17:34:41,292 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:41,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:41,293 INFO L82 PathProgramCache]: Analyzing trace with hash -7720703, now seen corresponding path program 30 times [2020-10-28 17:34:41,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:41,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706329536] [2020-10-28 17:34:41,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:41,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:41,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:41,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:42,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:46,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:46,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 17:34:46,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:46,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 17:34:46,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:46,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:46,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:34:46,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-28 17:34:46,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:34:46,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:46,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:46,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:46,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:46,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:46,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:46,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:34:46,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:46,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:46,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:46,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:46,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:46,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:46,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 17:34:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:46,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:46,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:46,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:46,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:34:46,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:46,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 17:34:46,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:46,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:46,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:46,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:46,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:46,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:46,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:34:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:46,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:46,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:46,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:34:46,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:46,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 17:34:46,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:46,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:46,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:34:46,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:34:46,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:34:46,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:46,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 17:34:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:46,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:46,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:46,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:46,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:34:46,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:46,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 17:34:46,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:46,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:46,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:46,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 17:34:46,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:46,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:46,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 368 proven. 537 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2020-10-28 17:34:46,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706329536] [2020-10-28 17:34:46,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:46,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 17:34:46,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983147211] [2020-10-28 17:34:46,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 17:34:46,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:46,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 17:34:46,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:34:46,844 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 17 states. [2020-10-28 17:34:47,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:47,371 INFO L93 Difference]: Finished difference Result 155 states and 165 transitions. [2020-10-28 17:34:47,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 17:34:47,372 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 154 [2020-10-28 17:34:47,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:47,373 INFO L225 Difference]: With dead ends: 155 [2020-10-28 17:34:47,373 INFO L226 Difference]: Without dead ends: 96 [2020-10-28 17:34:47,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-28 17:34:47,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-28 17:34:47,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-28 17:34:47,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-28 17:34:47,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-28 17:34:47,382 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 154 [2020-10-28 17:34:47,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:47,382 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-28 17:34:47,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 17:34:47,382 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-28 17:34:47,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 17:34:47,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:47,383 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 13, 13, 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] [2020-10-28 17:34:47,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 17:34:47,384 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:47,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:47,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1686415393, now seen corresponding path program 31 times [2020-10-28 17:34:47,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:47,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865333893] [2020-10-28 17:34:47,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:47,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:47,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:47,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:48,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:52,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:52,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 17:34:52,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:52,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-28 17:34:52,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:52,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:52,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 17:34:52,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-28 17:34:52,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 17:34:52,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:52,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:52,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:52,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:52,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:52,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:52,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:34:52,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:52,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:52,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:52,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:52,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:52,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 17:34:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:52,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:52,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:52,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:52,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:34:52,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:52,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 17:34:52,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:52,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:52,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:52,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:52,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:52,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:52,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:34:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:52,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:52,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:52,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:34:52,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:52,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 17:34:52,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:52,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:52,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 17:34:52,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:34:52,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 17:34:52,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:52,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 17:34:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:52,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:52,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:52,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:52,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:34:52,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:52,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 17:34:52,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:52,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:52,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:52,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:34:52,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:52,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:53,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2096 backedges. 424 proven. 620 refuted. 0 times theorem prover too weak. 1052 trivial. 0 not checked. [2020-10-28 17:34:53,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865333893] [2020-10-28 17:34:53,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:53,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 17:34:53,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216284695] [2020-10-28 17:34:53,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 17:34:53,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:53,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 17:34:53,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:34:53,015 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 18 states. [2020-10-28 17:34:53,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:53,625 INFO L93 Difference]: Finished difference Result 159 states and 169 transitions. [2020-10-28 17:34:53,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:34:53,626 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 160 [2020-10-28 17:34:53,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:53,627 INFO L225 Difference]: With dead ends: 159 [2020-10-28 17:34:53,627 INFO L226 Difference]: Without dead ends: 98 [2020-10-28 17:34:53,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 17:34:53,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-28 17:34:53,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-28 17:34:53,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-28 17:34:53,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-28 17:34:53,635 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 160 [2020-10-28 17:34:53,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:53,636 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-28 17:34:53,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 17:34:53,636 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-28 17:34:53,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-28 17:34:53,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:53,637 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 13, 13, 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] [2020-10-28 17:34:53,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 17:34:53,637 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:53,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:53,638 INFO L82 PathProgramCache]: Analyzing trace with hash -180412355, now seen corresponding path program 32 times [2020-10-28 17:34:53,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:53,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496473114] [2020-10-28 17:34:53,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:53,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:53,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:53,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:55,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:58,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:58,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 17:34:58,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:58,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 17:34:58,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:58,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:58,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:34:58,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:34:58,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:34:58,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:58,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:58,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:58,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:58,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:58,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:58,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:34:58,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:58,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:58,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:58,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:58,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:58,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:58,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 17:34:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:58,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:58,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:59,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:59,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:34:59,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:59,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 17:34:59,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:59,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:59,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:59,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:34:59,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:59,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:59,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:34:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:59,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:59,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:59,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:59,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:34:59,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:59,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 17:34:59,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:59,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:59,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:59,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:34:59,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:59,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:59,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-28 17:34:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:59,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:59,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:59,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:59,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:34:59,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:59,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-28 17:34:59,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:59,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:59,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:59,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:34:59,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:59,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:59,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2194 trivial. 0 not checked. [2020-10-28 17:34:59,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496473114] [2020-10-28 17:34:59,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:59,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 17:34:59,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663838074] [2020-10-28 17:34:59,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 17:34:59,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:59,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 17:34:59,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:34:59,324 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 17 states. [2020-10-28 17:34:59,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:59,434 INFO L93 Difference]: Finished difference Result 164 states and 172 transitions. [2020-10-28 17:34:59,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 17:34:59,435 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 166 [2020-10-28 17:34:59,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:59,436 INFO L225 Difference]: With dead ends: 164 [2020-10-28 17:34:59,436 INFO L226 Difference]: Without dead ends: 100 [2020-10-28 17:34:59,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:34:59,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-28 17:34:59,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-28 17:34:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 17:34:59,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-28 17:34:59,442 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 166 [2020-10-28 17:34:59,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:59,443 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-28 17:34:59,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 17:34:59,443 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-28 17:34:59,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 17:34:59,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:59,461 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 14, 14, 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] [2020-10-28 17:34:59,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 17:34:59,461 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:59,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:59,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1435156127, now seen corresponding path program 33 times [2020-10-28 17:34:59,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:59,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40522916] [2020-10-28 17:34:59,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:59,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:59,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:59,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:00,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:04,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:04,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-28 17:35:04,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:35:04,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-28 17:35:04,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:04,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 17:35:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:35:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 17:35:04,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:04,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:04,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:04,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:04,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:04,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:04,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:35:04,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:04,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:04,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:04,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:04,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:04,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:04,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:35:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:04,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:04,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:04,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:04,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:35:04,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:04,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 17:35:04,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:04,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:04,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:04,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:35:04,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:04,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:04,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 17:35:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:04,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:04,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:05,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:05,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:35:05,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:05,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 17:35:05,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:05,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:05,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:05,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:35:05,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:05,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:05,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-28 17:35:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:05,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:05,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:05,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:05,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:35:05,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:05,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 17:35:05,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:05,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:05,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:05,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:35:05,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:05,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:05,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2390 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2194 trivial. 0 not checked. [2020-10-28 17:35:05,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40522916] [2020-10-28 17:35:05,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:35:05,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 17:35:05,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061128831] [2020-10-28 17:35:05,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 17:35:05,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:05,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 17:35:05,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:35:05,194 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 18 states. [2020-10-28 17:35:05,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:05,361 INFO L93 Difference]: Finished difference Result 166 states and 174 transitions. [2020-10-28 17:35:05,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:35:05,361 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 168 [2020-10-28 17:35:05,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:05,363 INFO L225 Difference]: With dead ends: 166 [2020-10-28 17:35:05,363 INFO L226 Difference]: Without dead ends: 102 [2020-10-28 17:35:05,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:35:05,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-28 17:35:05,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-28 17:35:05,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-28 17:35:05,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-28 17:35:05,369 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 168 [2020-10-28 17:35:05,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:05,370 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-28 17:35:05,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 17:35:05,370 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-28 17:35:05,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-28 17:35:05,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:05,371 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 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] [2020-10-28 17:35:05,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 17:35:05,371 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:05,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:05,371 INFO L82 PathProgramCache]: Analyzing trace with hash -781693823, now seen corresponding path program 34 times [2020-10-28 17:35:05,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:05,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227859573] [2020-10-28 17:35:05,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:05,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:05,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:05,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:07,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:10,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:10,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-28 17:35:10,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:35:10,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-28 17:35:10,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:10,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:10,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:35:10,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-28 17:35:10,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:35:10,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:10,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:10,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:10,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:10,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:10,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:10,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:35:10,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:10,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:10,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:10,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:10,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:10,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:10,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 17:35:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:10,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:10,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:10,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:10,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:35:10,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:10,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 17:35:10,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:10,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:10,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:10,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:10,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:10,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:10,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 17:35:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:10,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:10,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:10,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:10,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:35:10,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:10,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 17:35:10,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:10,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:10,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:10,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:10,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:10,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:10,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-28 17:35:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:10,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:10,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:10,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:10,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:35:10,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:10,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 17:35:10,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:10,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:10,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:10,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:35:10,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:10,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:11,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2419 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2020-10-28 17:35:11,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227859573] [2020-10-28 17:35:11,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:35:11,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 17:35:11,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096207228] [2020-10-28 17:35:11,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:35:11,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:11,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:35:11,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:35:11,011 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 12 states. [2020-10-28 17:35:11,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:11,138 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2020-10-28 17:35:11,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:35:11,139 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 170 [2020-10-28 17:35:11,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:11,140 INFO L225 Difference]: With dead ends: 147 [2020-10-28 17:35:11,140 INFO L226 Difference]: Without dead ends: 104 [2020-10-28 17:35:11,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:35:11,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-28 17:35:11,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-28 17:35:11,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-28 17:35:11,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-28 17:35:11,147 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 170 [2020-10-28 17:35:11,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:11,147 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-28 17:35:11,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:35:11,147 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-28 17:35:11,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-28 17:35:11,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:11,148 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 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] [2020-10-28 17:35:11,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-28 17:35:11,148 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:11,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:11,149 INFO L82 PathProgramCache]: Analyzing trace with hash 433953791, now seen corresponding path program 35 times [2020-10-28 17:35:11,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:11,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248472808] [2020-10-28 17:35:11,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:11,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:11,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:11,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:12,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:16,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:16,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 17:35:16,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:35:16,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 17:35:16,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:16,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:16,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 17:35:16,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 17:35:16,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 17:35:16,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:16,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:16,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:16,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:16,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:16,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:16,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:35:16,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:16,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:16,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:16,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:16,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:16,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:16,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 17:35:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:16,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:16,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:16,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:35:16,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:16,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 17:35:16,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:16,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:16,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 17:35:16,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:35:16,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 17:35:16,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:16,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 17:35:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:16,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:16,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:16,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:16,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:35:16,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:16,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 17:35:16,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:16,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:16,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:35:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:16,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:16,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-28 17:35:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:16,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:16,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:16,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:16,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:35:16,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:16,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 17:35:16,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:16,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:16,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:16,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:35:16,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:16,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2436 backedges. 0 proven. 1193 refuted. 0 times theorem prover too weak. 1243 trivial. 0 not checked. [2020-10-28 17:35:16,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248472808] [2020-10-28 17:35:16,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:35:16,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 17:35:16,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616258495] [2020-10-28 17:35:16,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 17:35:16,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:16,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 17:35:16,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:35:16,845 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 19 states. [2020-10-28 17:35:17,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:17,539 INFO L93 Difference]: Finished difference Result 171 states and 181 transitions. [2020-10-28 17:35:17,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:35:17,540 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 172 [2020-10-28 17:35:17,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:17,541 INFO L225 Difference]: With dead ends: 171 [2020-10-28 17:35:17,541 INFO L226 Difference]: Without dead ends: 106 [2020-10-28 17:35:17,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 17:35:17,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-28 17:35:17,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-28 17:35:17,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-28 17:35:17,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-28 17:35:17,549 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 172 [2020-10-28 17:35:17,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:17,550 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-28 17:35:17,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 17:35:17,550 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-28 17:35:17,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-28 17:35:17,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:17,551 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 15, 15, 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] [2020-10-28 17:35:17,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-28 17:35:17,551 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:17,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:17,552 INFO L82 PathProgramCache]: Analyzing trace with hash 53767005, now seen corresponding path program 36 times [2020-10-28 17:35:17,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:17,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833934846] [2020-10-28 17:35:17,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:17,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:17,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:17,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:19,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:22,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:22,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-28 17:35:22,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:35:22,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-28 17:35:22,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:22,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:22,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 17:35:22,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:35:22,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 17:35:22,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:22,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:22,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:22,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:22,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:22,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:22,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:35:22,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:22,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:22,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:22,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:22,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:22,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:22,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 17:35:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:22,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:22,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:22,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:22,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:35:22,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:22,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 17:35:22,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:22,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:22,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:22,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 17:35:22,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:22,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:22,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 17:35:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:22,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:22,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:23,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:23,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:35:23,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:23,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 17:35:23,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:23,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:23,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:23,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 17:35:23,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:23,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:23,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-28 17:35:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:23,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:23,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:23,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:23,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:35:23,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:23,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 17:35:23,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:23,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:23,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:23,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 17:35:23,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:23,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:23,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2721 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 2496 trivial. 0 not checked. [2020-10-28 17:35:23,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833934846] [2020-10-28 17:35:23,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:35:23,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 17:35:23,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733433377] [2020-10-28 17:35:23,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 17:35:23,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:23,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 17:35:23,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:35:23,319 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 19 states. [2020-10-28 17:35:23,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:23,440 INFO L93 Difference]: Finished difference Result 176 states and 184 transitions. [2020-10-28 17:35:23,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:35:23,440 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 178 [2020-10-28 17:35:23,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:23,441 INFO L225 Difference]: With dead ends: 176 [2020-10-28 17:35:23,441 INFO L226 Difference]: Without dead ends: 108 [2020-10-28 17:35:23,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:35:23,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-28 17:35:23,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-28 17:35:23,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-28 17:35:23,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-28 17:35:23,448 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 178 [2020-10-28 17:35:23,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:23,448 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-28 17:35:23,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 17:35:23,449 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-28 17:35:23,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-28 17:35:23,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:23,450 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 16, 16, 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] [2020-10-28 17:35:23,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-28 17:35:23,450 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:23,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:23,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1999341247, now seen corresponding path program 37 times [2020-10-28 17:35:23,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:23,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202441568] [2020-10-28 17:35:23,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:23,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:23,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:23,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:25,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:28,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:28,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 17:35:28,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:35:28,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 17:35:28,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:28,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:35:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 17:35:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 17:35:28,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:28,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:28,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:28,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:28,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:28,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:28,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:35:28,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:28,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:28,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:28,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:28,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:28,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:28,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:35:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:28,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:28,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:28,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:28,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:35:28,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:28,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 17:35:28,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:28,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:28,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:28,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:28,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:28,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:28,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 17:35:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:28,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:28,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:28,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:28,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:35:28,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:28,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-28 17:35:28,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:28,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:28,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:28,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 17:35:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:28,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:28,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:29,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:29,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:35:29,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:29,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-28 17:35:29,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:29,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:29,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:29,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 17:35:29,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:29,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:29,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 2671 trivial. 0 not checked. [2020-10-28 17:35:29,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202441568] [2020-10-28 17:35:29,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:35:29,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 17:35:29,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517537165] [2020-10-28 17:35:29,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:35:29,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:29,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:35:29,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:35:29,093 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 13 states. [2020-10-28 17:35:29,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:29,223 INFO L93 Difference]: Finished difference Result 155 states and 160 transitions. [2020-10-28 17:35:29,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:35:29,223 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 180 [2020-10-28 17:35:29,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:29,225 INFO L225 Difference]: With dead ends: 155 [2020-10-28 17:35:29,225 INFO L226 Difference]: Without dead ends: 110 [2020-10-28 17:35:29,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:35:29,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-28 17:35:29,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-28 17:35:29,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-28 17:35:29,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-10-28 17:35:29,237 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 180 [2020-10-28 17:35:29,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:29,239 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-10-28 17:35:29,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:35:29,240 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-10-28 17:35:29,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-28 17:35:29,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:29,241 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 16, 16, 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] [2020-10-28 17:35:29,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-28 17:35:29,241 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:29,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:29,242 INFO L82 PathProgramCache]: Analyzing trace with hash -62208323, now seen corresponding path program 38 times [2020-10-28 17:35:29,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:29,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742149315] [2020-10-28 17:35:29,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:29,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:29,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:29,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking...