/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-crafted/bAnd3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:03:27,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:03:27,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:03:27,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:03:27,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:03:27,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:03:27,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:03:27,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:03:27,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:03:27,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:03:27,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:03:27,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:03:27,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:03:27,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:03:27,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:03:27,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:03:27,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:03:27,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:03:27,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:03:27,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:03:27,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:03:27,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:03:27,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:03:27,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:03:27,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:03:27,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:03:27,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:03:27,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:03:27,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:03:27,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:03:27,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:03:27,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:03:27,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:03:27,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:03:27,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:03:27,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:03:27,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:03:27,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:03:27,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:03:27,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:03:27,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:03:27,492 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 14:03:27,542 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:03:27,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:03:27,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:03:27,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:03:27,548 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:03:27,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:03:27,549 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:03:27,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:03:27,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:03:27,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:03:27,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:03:27,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:03:27,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:03:27,551 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:03:27,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:03:27,552 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:03:27,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:03:27,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:03:27,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:03:27,552 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:03:27,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:03:27,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:03:27,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:03:27,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:03:27,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:03:27,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:03:27,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:03:27,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:03:27,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:03:27,554 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:03:27,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:03:28,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:03:28,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:03:28,023 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:03:28,024 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:03:28,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bAnd3.i [2020-10-27 14:03:28,121 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a30a72efd/bf955d7413ba404cbf5751f5a2886f2e/FLAGe5ac47c45 [2020-10-27 14:03:28,756 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:03:28,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/bAnd3.i [2020-10-27 14:03:28,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a30a72efd/bf955d7413ba404cbf5751f5a2886f2e/FLAGe5ac47c45 [2020-10-27 14:03:29,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a30a72efd/bf955d7413ba404cbf5751f5a2886f2e [2020-10-27 14:03:29,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:03:29,154 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:03:29,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:03:29,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:03:29,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:03:29,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:03:29" (1/1) ... [2020-10-27 14:03:29,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@612345cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:29, skipping insertion in model container [2020-10-27 14:03:29,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:03:29" (1/1) ... [2020-10-27 14:03:29,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:03:29,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:03:29,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:03:29,513 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:03:29,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:03:29,596 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:03:29,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:29 WrapperNode [2020-10-27 14:03:29,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:03:29,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:03:29,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:03:29,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:03:29,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:29" (1/1) ... [2020-10-27 14:03:29,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:29" (1/1) ... [2020-10-27 14:03:29,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:29" (1/1) ... [2020-10-27 14:03:29,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:29" (1/1) ... [2020-10-27 14:03:29,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:29" (1/1) ... [2020-10-27 14:03:29,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:29" (1/1) ... [2020-10-27 14:03:29,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:29" (1/1) ... [2020-10-27 14:03:29,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:03:29,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:03:29,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:03:29,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:03:29,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:03:29,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:03:29,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:03:29,791 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:03:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2020-10-27 14:03:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:03:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:03:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:03:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:03:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:03:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:03:29,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:03:29,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:03:29,795 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2020-10-27 14:03:29,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:03:29,796 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:03:29,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:03:29,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:03:29,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:03:29,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:03:29,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:03:30,305 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:03:30,305 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 14:03:30,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:03:30 BoogieIcfgContainer [2020-10-27 14:03:30,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:03:30,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:03:30,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:03:30,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:03:30,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:03:29" (1/3) ... [2020-10-27 14:03:30,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a4c2dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:03:30, skipping insertion in model container [2020-10-27 14:03:30,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:29" (2/3) ... [2020-10-27 14:03:30,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a4c2dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:03:30, skipping insertion in model container [2020-10-27 14:03:30,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:03:30" (3/3) ... [2020-10-27 14:03:30,320 INFO L111 eAbstractionObserver]: Analyzing ICFG bAnd3.i [2020-10-27 14:03:30,333 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:03:30,340 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:03:30,354 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:03:30,384 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:03:30,385 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:03:30,385 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:03:30,385 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:03:30,385 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:03:30,386 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:03:30,386 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:03:30,386 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:03:30,405 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-27 14:03:30,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 14:03:30,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:30,414 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] [2020-10-27 14:03:30,414 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:30,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:30,422 INFO L82 PathProgramCache]: Analyzing trace with hash 585288593, now seen corresponding path program 1 times [2020-10-27 14:03:30,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:30,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608489339] [2020-10-27 14:03:30,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:30,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:30,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:30,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:30,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:31,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:31,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:31,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:03:31,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:31,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 699 [2020-10-27 14:03:31,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:31,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:31,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 14:03:31,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:31,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:03:31,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:31,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:31,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:31,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:31,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:31,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 14:03:31,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:31,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:31,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:31,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:31,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:31,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:31,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:31,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:31,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:31,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:31,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:31,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 14:03:31,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:31,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:31,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:03:31,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:31,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:31,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 14:03:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:31,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:31,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:31,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:31,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:31,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:31,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 14:03:31,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:31,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:31,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:03:31,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:31,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:03:31,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:03:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:31,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:31,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:31,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:31,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:31,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 14:03:31,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:31,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:31,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:03:31,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:31,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:03:31,499 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:03:31,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608489339] [2020-10-27 14:03:31,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:03:31,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:03:31,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325737642] [2020-10-27 14:03:31,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:03:31,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:31,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:03:31,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:03:31,533 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-27 14:03:31,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:31,684 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2020-10-27 14:03:31,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:03:31,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-27 14:03:31,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:31,696 INFO L225 Difference]: With dead ends: 60 [2020-10-27 14:03:31,696 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 14:03:31,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:03:31,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 14:03:31,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-27 14:03:31,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-27 14:03:31,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-27 14:03:31,749 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2020-10-27 14:03:31,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:31,750 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-27 14:03:31,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:03:31,750 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-27 14:03:31,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 14:03:31,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:31,753 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] [2020-10-27 14:03:31,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:03:31,754 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:31,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:31,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1339353745, now seen corresponding path program 1 times [2020-10-27 14:03:31,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:31,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245063309] [2020-10-27 14:03:31,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:31,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:31,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:31,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:31,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:31,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:33,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:03:33,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:33,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1326 [2020-10-27 14:03:33,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:33,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:33,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 14:03:33,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:03:33,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:33,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:33,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:33,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:33,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:33,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:03:33,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:33,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:33,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:33,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:33,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:33,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:33,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:33,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:33,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:33,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:03:33,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:33,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:33,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:33,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:03:33,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:33,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 14:03:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:33,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:33,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:33,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:33,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 14:03:33,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:33,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:33,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:33,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:03:33,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:33,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:03:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:33,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:33,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:33,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:33,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 14:03:33,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:03:33,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:03:33,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245063309] [2020-10-27 14:03:33,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:03:33,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:03:33,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874432655] [2020-10-27 14:03:33,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:03:33,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:33,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:03:33,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:03:33,260 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-27 14:03:33,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:33,464 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2020-10-27 14:03:33,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:03:33,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-27 14:03:33,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:33,466 INFO L225 Difference]: With dead ends: 49 [2020-10-27 14:03:33,467 INFO L226 Difference]: Without dead ends: 30 [2020-10-27 14:03:33,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:03:33,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-27 14:03:33,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-27 14:03:33,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 14:03:33,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-27 14:03:33,484 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-27 14:03:33,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:33,484 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-27 14:03:33,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:03:33,484 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-27 14:03:33,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 14:03:33,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:33,487 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:33,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:03:33,487 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:33,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:33,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1111227151, now seen corresponding path program 1 times [2020-10-27 14:03:33,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:33,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861893488] [2020-10-27 14:03:33,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:33,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:36,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:03:36,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:36,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2990 [2020-10-27 14:03:36,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:36,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:36,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 14:03:36,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:03:36,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 14:03:36,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:36,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:36,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:36,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:36,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:03:36,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:36,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:36,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:36,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:36,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:36,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:36,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:36,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:03:36,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:36,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 14:03:36,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:36,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:36,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:36,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:03:36,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 14:03:36,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 14:03:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:36,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:36,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:03:36,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:36,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 14:03:36,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:36,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:36,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:36,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:03:36,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:36,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 14:03:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:36,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:36,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:03:36,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:36,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 14:03:36,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:36,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:36,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:36,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:03:36,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:36,684 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 14:03:36,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861893488] [2020-10-27 14:03:36,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:36,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 14:03:36,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741616997] [2020-10-27 14:03:36,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:03:36,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:36,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:03:36,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:03:36,690 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-27 14:03:36,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:36,967 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-27 14:03:36,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:03:36,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-27 14:03:36,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:36,972 INFO L225 Difference]: With dead ends: 52 [2020-10-27 14:03:36,972 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 14:03:36,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:03:36,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 14:03:36,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-27 14:03:36,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 14:03:36,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-27 14:03:36,990 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 40 [2020-10-27 14:03:36,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:36,991 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-27 14:03:36,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:03:36,991 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-27 14:03:36,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 14:03:36,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:36,995 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:03:36,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:03:36,995 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:36,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:36,996 INFO L82 PathProgramCache]: Analyzing trace with hash 51803405, now seen corresponding path program 2 times [2020-10-27 14:03:36,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:36,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194957626] [2020-10-27 14:03:36,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:37,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:37,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:37,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:37,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:37,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:42,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:03:42,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:42,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:03:42,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:03:42,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 14:03:42,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:42,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:42,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:42,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:42,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:42,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:42,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:03:42,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:42,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:42,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:42,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:42,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:42,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:42,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:42,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:42,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 14:03:42,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:42,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 14:03:42,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:42,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:03:42,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:42,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:42,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:03:42,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 14:03:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:42,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:42,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 14:03:42,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:42,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 14:03:42,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:42,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:03:42,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:42,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:42,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-27 14:03:42,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:03:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:42,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:42,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 14:03:42,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:42,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 14:03:42,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:42,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:03:42,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:42,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:42,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:42,209 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 14:03:42,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194957626] [2020-10-27 14:03:42,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:42,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:03:42,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377075913] [2020-10-27 14:03:42,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:03:42,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:42,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:03:42,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:03:42,212 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-27 14:03:42,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:42,452 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-27 14:03:42,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:03:42,452 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-27 14:03:42,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:42,454 INFO L225 Difference]: With dead ends: 56 [2020-10-27 14:03:42,454 INFO L226 Difference]: Without dead ends: 34 [2020-10-27 14:03:42,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:03:42,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-27 14:03:42,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-27 14:03:42,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 14:03:42,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-27 14:03:42,472 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 46 [2020-10-27 14:03:42,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:42,472 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-27 14:03:42,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:03:42,472 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-27 14:03:42,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 14:03:42,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:42,475 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:03:42,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:03:42,476 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:42,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:42,480 INFO L82 PathProgramCache]: Analyzing trace with hash 790018187, now seen corresponding path program 3 times [2020-10-27 14:03:42,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:42,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593331971] [2020-10-27 14:03:42,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:42,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:43,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:47,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:47,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:03:47,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:47,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:03:47,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:47,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:03:47,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 14:03:47,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:03:47,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:47,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:47,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:47,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:47,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:47,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:47,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:03:47,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:47,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:47,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:47,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:47,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:47,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:47,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:47,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:47,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:47,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 14:03:47,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:47,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 14:03:47,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:47,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:03:47,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:47,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:03:47,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:03:47,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 14:03:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:47,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:47,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:47,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:47,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 14:03:47,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:47,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 14:03:47,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:47,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:03:47,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:47,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:03:47,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:47,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 14:03:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:47,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:47,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:47,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 14:03:47,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:47,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 14:03:47,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:47,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:03:47,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:47,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:03:47,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:47,782 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-27 14:03:47,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593331971] [2020-10-27 14:03:47,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:47,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:03:47,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300800344] [2020-10-27 14:03:47,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:03:47,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:47,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:03:47,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:03:47,787 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 7 states. [2020-10-27 14:03:48,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:48,070 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-27 14:03:48,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:03:48,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-27 14:03:48,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:48,072 INFO L225 Difference]: With dead ends: 60 [2020-10-27 14:03:48,072 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 14:03:48,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:03:48,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 14:03:48,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-27 14:03:48,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-27 14:03:48,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-27 14:03:48,081 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 52 [2020-10-27 14:03:48,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:48,081 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-27 14:03:48,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:03:48,082 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-27 14:03:48,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 14:03:48,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:48,083 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:48,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:03:48,083 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:48,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:48,084 INFO L82 PathProgramCache]: Analyzing trace with hash -804838007, now seen corresponding path program 4 times [2020-10-27 14:03:48,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:48,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713971897] [2020-10-27 14:03:48,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:48,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:48,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:48,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:48,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:48,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:53,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:53,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 14:03:53,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:53,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:03:53,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:53,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:03:53,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 14:03:53,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:03:53,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:53,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:53,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:53,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:53,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:53,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:53,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:03:53,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:53,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:53,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:53,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:53,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:53,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:53,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:53,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:53,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:53,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 14:03:53,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:53,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 14:03:53,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:53,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:03:53,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:53,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:03:53,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:53,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 14:03:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:53,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:53,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:53,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:53,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 14:03:53,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:53,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 14:03:53,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:53,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:03:53,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:53,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:03:53,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:53,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:03:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:53,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:53,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:53,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 14:03:53,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:53,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 14:03:53,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:53,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:03:53,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:53,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:03:53,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:53,345 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-27 14:03:53,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713971897] [2020-10-27 14:03:53,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:53,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:03:53,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113857161] [2020-10-27 14:03:53,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:03:53,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:53,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:03:53,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:03:53,348 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 8 states. [2020-10-27 14:03:53,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:53,624 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-27 14:03:53,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:03:53,625 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-27 14:03:53,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:53,626 INFO L225 Difference]: With dead ends: 64 [2020-10-27 14:03:53,626 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 14:03:53,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:03:53,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 14:03:53,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-27 14:03:53,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-27 14:03:53,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-27 14:03:53,635 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 58 [2020-10-27 14:03:53,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:53,635 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-27 14:03:53,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:03:53,635 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-27 14:03:53,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 14:03:53,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:53,637 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:53,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:03:53,637 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:53,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:53,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1925848071, now seen corresponding path program 5 times [2020-10-27 14:03:53,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:53,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451573202] [2020-10-27 14:03:53,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:53,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:53,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:53,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:53,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:54,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:58,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:58,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 14:03:58,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:58,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:03:58,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:58,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:03:58,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 14:03:58,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:03:58,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:58,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:58,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:58,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:58,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:58,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:58,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:03:58,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:58,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:58,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:58,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:58,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:58,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:58,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:58,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:58,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:58,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 14:03:58,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:58,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 14:03:58,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:58,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:03:58,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:58,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:03:58,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:58,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 14:03:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:58,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:58,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:58,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:58,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 14:03:58,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:58,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 14:03:58,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:58,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:03:58,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:58,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:03:58,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:58,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:03:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:58,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:58,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:58,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 14:03:58,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:58,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 14:03:58,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:58,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:03:58,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:58,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:03:58,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:58,936 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-27 14:03:58,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451573202] [2020-10-27 14:03:58,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:58,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:03:58,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252340125] [2020-10-27 14:03:58,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:03:58,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:58,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:03:58,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:03:58,940 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 9 states. [2020-10-27 14:03:59,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:59,248 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-27 14:03:59,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:03:59,248 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-27 14:03:59,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:59,249 INFO L225 Difference]: With dead ends: 68 [2020-10-27 14:03:59,249 INFO L226 Difference]: Without dead ends: 40 [2020-10-27 14:03:59,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:03:59,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-27 14:03:59,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-27 14:03:59,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 14:03:59,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-27 14:03:59,257 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 64 [2020-10-27 14:03:59,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:59,258 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-27 14:03:59,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:03:59,258 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-27 14:03:59,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 14:03:59,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:59,259 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:59,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:03:59,260 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:59,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:59,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1118176251, now seen corresponding path program 6 times [2020-10-27 14:03:59,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:59,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646508553] [2020-10-27 14:03:59,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:59,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:59,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:59,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:59,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:00,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:04,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:04,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 14:04:04,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:04,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:04:04,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:04,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:04:04,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 14:04:04,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:04:04,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:04,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:04,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:04,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:04,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:04,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:04,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:04:04,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:04,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:04,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:04,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:04,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:04,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:04,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:04,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:04,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:04,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 14:04:04,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:04,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 14:04:04,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:04:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:04:04,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:04,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 14:04:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:04,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:04,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:04,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:04,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 14:04:04,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:04,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 14:04:04,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:04,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:04:04,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:04,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:04:04,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:04,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:04:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:04,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:04,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:04,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 14:04:04,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:04,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 14:04:04,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:04:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:04:04,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:04,548 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 14:04:04,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646508553] [2020-10-27 14:04:04,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:04,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:04:04,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835758273] [2020-10-27 14:04:04,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:04:04,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:04,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:04:04,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:04:04,552 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 10 states. [2020-10-27 14:04:05,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:05,038 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-27 14:04:05,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:04:05,039 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-27 14:04:05,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:05,040 INFO L225 Difference]: With dead ends: 72 [2020-10-27 14:04:05,040 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 14:04:05,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:04:05,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 14:04:05,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-27 14:04:05,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 14:04:05,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-27 14:04:05,049 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 70 [2020-10-27 14:04:05,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:05,049 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-27 14:04:05,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:04:05,049 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-27 14:04:05,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 14:04:05,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:05,051 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:05,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:04:05,051 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:05,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:05,052 INFO L82 PathProgramCache]: Analyzing trace with hash -2067192445, now seen corresponding path program 7 times [2020-10-27 14:04:05,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:05,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239763686] [2020-10-27 14:04:05,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:05,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:05,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:05,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:05,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:06,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:10,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:10,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 14:04:10,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:10,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:04:10,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:10,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:04:10,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-27 14:04:10,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:04:10,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:10,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:10,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:10,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:10,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:10,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:10,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:04:10,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:10,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:10,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:10,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:10,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:10,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:10,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:10,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:10,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:10,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 14:04:10,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:10,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 14:04:10,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:10,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:04:10,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:10,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:04:10,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:04:10,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:04:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:10,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:10,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:10,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:10,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 14:04:10,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:10,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 14:04:10,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:10,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:04:10,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:10,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:04:10,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:10,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:04:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:10,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:10,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:10,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 14:04:10,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:10,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 14:04:10,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:10,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:04:10,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:10,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:04:10,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-27 14:04:10,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239763686] [2020-10-27 14:04:10,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:10,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:04:10,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667151551] [2020-10-27 14:04:10,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:04:10,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:10,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:04:10,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:04:10,348 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 11 states. [2020-10-27 14:04:10,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:10,827 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-27 14:04:10,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:04:10,828 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-27 14:04:10,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:10,829 INFO L225 Difference]: With dead ends: 76 [2020-10-27 14:04:10,829 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 14:04:10,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:04:10,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 14:04:10,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-27 14:04:10,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-27 14:04:10,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-27 14:04:10,838 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 76 [2020-10-27 14:04:10,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:10,838 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-27 14:04:10,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:04:10,838 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-27 14:04:10,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 14:04:10,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:10,839 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:10,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:04:10,840 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:10,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:10,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1665267841, now seen corresponding path program 8 times [2020-10-27 14:04:10,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:10,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097209601] [2020-10-27 14:04:10,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:10,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:10,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:10,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:10,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:12,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:15,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:15,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 14:04:15,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:15,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:04:15,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:04:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 14:04:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:04:15,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:15,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:15,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:15,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:15,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:15,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:15,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:04:15,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:15,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:15,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:15,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:15,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:15,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:15,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:15,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:15,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:15,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 14:04:15,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:15,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 14:04:15,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:15,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:04:15,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:15,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:04:15,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:16,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:04:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:16,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:16,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:16,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:16,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 14:04:16,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:16,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 14:04:16,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:16,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:04:16,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:16,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:04:16,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:16,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:04:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:16,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:16,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:16,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 14:04:16,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:16,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 14:04:16,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:16,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:04:16,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:16,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:04:16,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:16,106 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-27 14:04:16,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097209601] [2020-10-27 14:04:16,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:16,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:04:16,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855339313] [2020-10-27 14:04:16,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:04:16,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:16,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:04:16,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:04:16,108 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 12 states. [2020-10-27 14:04:16,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:16,611 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-27 14:04:16,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:04:16,612 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-10-27 14:04:16,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:16,613 INFO L225 Difference]: With dead ends: 80 [2020-10-27 14:04:16,613 INFO L226 Difference]: Without dead ends: 46 [2020-10-27 14:04:16,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:04:16,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-27 14:04:16,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-27 14:04:16,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 14:04:16,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-27 14:04:16,623 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 82 [2020-10-27 14:04:16,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:16,624 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-27 14:04:16,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:04:16,624 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-27 14:04:16,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 14:04:16,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:16,625 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:16,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:04:16,626 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:16,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:16,626 INFO L82 PathProgramCache]: Analyzing trace with hash -838413057, now seen corresponding path program 9 times [2020-10-27 14:04:16,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:16,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006756858] [2020-10-27 14:04:16,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:16,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:16,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:16,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:16,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:18,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:21,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:21,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 14:04:21,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:21,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:04:21,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:21,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:04:21,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 14:04:21,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:04:21,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:21,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:21,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:21,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:21,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:21,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:21,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:04:21,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:21,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:21,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:21,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:21,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:21,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:21,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:21,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:21,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:21,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:04:21,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:21,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 14:04:21,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:21,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:04:21,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:21,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:04:21,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:21,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:04:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:21,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:21,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:21,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:21,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:04:21,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:21,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 14:04:21,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:21,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:04:21,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:21,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:04:21,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:21,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:04:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:21,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:21,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:21,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:04:21,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:21,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 14:04:21,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:04:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:04:21,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:21,931 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 14:04:21,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006756858] [2020-10-27 14:04:21,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:21,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:04:21,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587199286] [2020-10-27 14:04:21,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:04:21,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:21,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:04:21,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:04:21,934 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 13 states. [2020-10-27 14:04:22,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:22,415 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-27 14:04:22,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:04:22,415 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 88 [2020-10-27 14:04:22,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:22,416 INFO L225 Difference]: With dead ends: 84 [2020-10-27 14:04:22,417 INFO L226 Difference]: Without dead ends: 48 [2020-10-27 14:04:22,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:04:22,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-27 14:04:22,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-27 14:04:22,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-27 14:04:22,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-27 14:04:22,427 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 88 [2020-10-27 14:04:22,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:22,427 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-27 14:04:22,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:04:22,428 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-27 14:04:22,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 14:04:22,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:22,429 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:22,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:04:22,429 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:22,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:22,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1418585347, now seen corresponding path program 10 times [2020-10-27 14:04:22,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:22,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028415037] [2020-10-27 14:04:22,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:22,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:22,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:22,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:22,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:24,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:27,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:27,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 14:04:27,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:27,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:04:27,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:27,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:04:27,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-27 14:04:27,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:04:27,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:27,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:27,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:27,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:27,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:27,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:27,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:04:27,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:27,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:27,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:27,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:27,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:27,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:27,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:27,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:27,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:27,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 14:04:27,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:27,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 14:04:27,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:27,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:04:27,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:27,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:04:27,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:27,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:04:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:27,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:27,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:27,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:27,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 14:04:27,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:27,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 14:04:27,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:27,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:04:27,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:27,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:04:27,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:27,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:04:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:27,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:27,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:27,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 14:04:27,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:27,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 14:04:27,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:27,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:04:27,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:27,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:04:27,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:27,802 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-27 14:04:27,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028415037] [2020-10-27 14:04:27,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:27,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:04:27,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909243272] [2020-10-27 14:04:27,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:04:27,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:27,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:04:27,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:04:27,805 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 14 states. [2020-10-27 14:04:28,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:28,362 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-27 14:04:28,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:04:28,363 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 94 [2020-10-27 14:04:28,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:28,364 INFO L225 Difference]: With dead ends: 88 [2020-10-27 14:04:28,365 INFO L226 Difference]: Without dead ends: 50 [2020-10-27 14:04:28,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:04:28,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-27 14:04:28,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-27 14:04:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 14:04:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-27 14:04:28,373 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 94 [2020-10-27 14:04:28,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:28,373 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-27 14:04:28,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:04:28,373 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-27 14:04:28,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 14:04:28,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:28,374 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 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] [2020-10-27 14:04:28,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:04:28,375 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:28,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:28,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1760963195, now seen corresponding path program 11 times [2020-10-27 14:04:28,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:28,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842780332] [2020-10-27 14:04:28,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:28,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:28,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:28,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:28,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:33,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:33,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 14:04:33,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:04:33,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:04:33,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:33,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:04:33,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-27 14:04:33,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:04:33,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:33,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:33,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:33,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:33,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:33,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:33,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:04:33,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:33,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:33,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:33,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:33,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:33,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:33,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:33,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:33,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:33,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 14:04:33,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:33,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 14:04:33,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:33,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:04:33,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:33,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:04:33,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:33,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:04:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:33,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:33,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:33,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:33,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 14:04:33,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:33,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 14:04:33,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:33,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:04:33,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:33,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:04:33,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:33,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:04:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:33,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:33,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:33,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:33,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 14:04:33,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:33,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 14:04:33,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:33,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:33,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 14:04:33,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:33,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:33,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 121 proven. 899 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-27 14:04:33,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842780332] [2020-10-27 14:04:33,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:33,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:04:33,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551231841] [2020-10-27 14:04:33,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:04:33,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:33,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:04:33,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:04:33,807 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 16 states. [2020-10-27 14:04:34,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:34,455 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2020-10-27 14:04:34,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:04:34,456 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 100 [2020-10-27 14:04:34,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:34,457 INFO L225 Difference]: With dead ends: 94 [2020-10-27 14:04:34,457 INFO L226 Difference]: Without dead ends: 54 [2020-10-27 14:04:34,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:04:34,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-27 14:04:34,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-27 14:04:34,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 14:04:34,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-27 14:04:34,471 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 100 [2020-10-27 14:04:34,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:34,471 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-27 14:04:34,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:04:34,471 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-27 14:04:34,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-27 14:04:34,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:34,473 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 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] [2020-10-27 14:04:34,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:04:34,473 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:34,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:34,474 INFO L82 PathProgramCache]: Analyzing trace with hash 2107420407, now seen corresponding path program 1 times [2020-10-27 14:04:34,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:34,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303598052] [2020-10-27 14:04:34,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:34,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:34,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:34,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:34,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:39,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:39,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 14:04:39,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:04:39,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:04:39,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:39,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:04:39,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 14:04:39,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:04:39,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:39,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:39,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:39,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:39,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:39,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:39,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:04:39,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:39,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:39,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:39,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:39,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:39,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:39,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:39,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:39,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:39,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:04:39,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:39,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 14:04:39,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:39,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:04:39,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:39,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:04:39,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:39,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:04:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:39,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:39,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:39,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:39,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:04:39,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:39,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 14:04:39,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:04:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:39,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:04:39,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:39,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 14:04:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:40,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:40,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:40,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:40,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:04:40,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:40,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 14:04:40,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:40,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:40,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 14:04:40,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:40,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:40,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 144 proven. 1065 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-10-27 14:04:40,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303598052] [2020-10-27 14:04:40,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:40,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:04:40,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777784791] [2020-10-27 14:04:40,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:04:40,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:40,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:04:40,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:04:40,134 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 18 states. [2020-10-27 14:04:40,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:40,846 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2020-10-27 14:04:40,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:04:40,846 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 108 [2020-10-27 14:04:40,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:40,848 INFO L225 Difference]: With dead ends: 101 [2020-10-27 14:04:40,848 INFO L226 Difference]: Without dead ends: 58 [2020-10-27 14:04:40,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=320, Invalid=610, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:04:40,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-27 14:04:40,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-10-27 14:04:40,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 14:04:40,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-10-27 14:04:40,856 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 108 [2020-10-27 14:04:40,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:40,857 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-10-27 14:04:40,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:04:40,857 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-10-27 14:04:40,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 14:04:40,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:40,858 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 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] [2020-10-27 14:04:40,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:04:40,859 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:40,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:40,859 INFO L82 PathProgramCache]: Analyzing trace with hash -2124265869, now seen corresponding path program 2 times [2020-10-27 14:04:40,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:40,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6808928] [2020-10-27 14:04:40,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:40,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:40,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:40,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:40,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:45,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:45,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 14:04:45,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:04:45,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:04:45,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:45,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:04:45,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-27 14:04:45,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:04:45,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:45,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:45,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:45,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:45,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:45,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:45,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:04:45,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:45,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:45,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:45,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:45,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:45,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:45,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:45,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:46,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:46,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:04:46,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:46,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 14:04:46,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:46,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:04:46,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:46,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:04:46,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:46,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 14:04:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:46,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:46,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:46,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:46,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:04:46,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:46,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 14:04:46,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:46,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:04:46,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:46,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:04:46,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:46,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:04:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:46,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:46,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:46,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:46,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:04:46,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:46,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 14:04:46,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:46,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:46,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 14:04:46,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:46,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 169 proven. 1247 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-10-27 14:04:46,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6808928] [2020-10-27 14:04:46,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:46,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:04:46,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430049539] [2020-10-27 14:04:46,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:04:46,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:46,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:04:46,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:04:46,602 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 20 states. [2020-10-27 14:04:47,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:47,328 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2020-10-27 14:04:47,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:04:47,329 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 116 [2020-10-27 14:04:47,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:47,330 INFO L225 Difference]: With dead ends: 109 [2020-10-27 14:04:47,330 INFO L226 Difference]: Without dead ends: 62 [2020-10-27 14:04:47,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=369, Invalid=753, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:04:47,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-27 14:04:47,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2020-10-27 14:04:47,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-27 14:04:47,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-10-27 14:04:47,339 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 116 [2020-10-27 14:04:47,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:47,340 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-10-27 14:04:47,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:04:47,340 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-10-27 14:04:47,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 14:04:47,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:47,341 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 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] [2020-10-27 14:04:47,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:04:47,342 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:47,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:47,342 INFO L82 PathProgramCache]: Analyzing trace with hash -416042769, now seen corresponding path program 3 times [2020-10-27 14:04:47,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:47,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972455896] [2020-10-27 14:04:47,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:47,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:47,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:47,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:47,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:52,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:52,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 14:04:52,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:04:52,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:04:52,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:52,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:04:52,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 14:04:52,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:04:52,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:52,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:52,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:52,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:52,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:52,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:52,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:04:52,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:52,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:52,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:52,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:52,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:52,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:52,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:52,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:52,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:52,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:04:52,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:52,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 14:04:52,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:52,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:04:52,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:52,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:04:52,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:52,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:04:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:52,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:52,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:53,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:53,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:04:53,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:53,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 14:04:53,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:53,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:04:53,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:53,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:04:53,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:53,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:04:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:53,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:53,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:53,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:53,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:04:53,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:53,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-27 14:04:53,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:53,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:53,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 14:04:53,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:53,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 196 proven. 1445 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-27 14:04:53,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972455896] [2020-10-27 14:04:53,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:53,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:04:53,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453389551] [2020-10-27 14:04:53,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:04:53,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:53,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:04:53,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:04:53,220 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 22 states. [2020-10-27 14:04:54,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:54,073 INFO L93 Difference]: Finished difference Result 117 states and 128 transitions. [2020-10-27 14:04:54,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:04:54,074 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 124 [2020-10-27 14:04:54,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:54,075 INFO L225 Difference]: With dead ends: 117 [2020-10-27 14:04:54,075 INFO L226 Difference]: Without dead ends: 66 [2020-10-27 14:04:54,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=422, Invalid=910, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:04:54,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-27 14:04:54,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-27 14:04:54,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-27 14:04:54,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-10-27 14:04:54,085 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 124 [2020-10-27 14:04:54,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:54,085 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-10-27 14:04:54,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:04:54,085 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-10-27 14:04:54,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 14:04:54,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:54,087 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 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] [2020-10-27 14:04:54,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:04:54,087 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:54,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:54,088 INFO L82 PathProgramCache]: Analyzing trace with hash -2064798101, now seen corresponding path program 4 times [2020-10-27 14:04:54,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:54,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154701775] [2020-10-27 14:04:54,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:54,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:54,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:54,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:54,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:59,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:59,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 14:04:59,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:04:59,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:04:59,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:59,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:04:59,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 14:04:59,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:04:59,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:59,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:59,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:59,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:59,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:59,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:59,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:04:59,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:59,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:59,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:59,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:59,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:59,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:59,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:59,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:59,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:59,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:04:59,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:59,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 14:04:59,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:59,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:04:59,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:59,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:04:59,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:59,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:04:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:59,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:59,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:59,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:59,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:04:59,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:59,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 14:04:59,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:59,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:04:59,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:59,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:04:59,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:59,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:04:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:59,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:59,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:59,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:59,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:04:59,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:59,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 14:04:59,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:59,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:59,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 14:04:59,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:59,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 225 proven. 1659 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2020-10-27 14:04:59,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154701775] [2020-10-27 14:04:59,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:59,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:04:59,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741480952] [2020-10-27 14:04:59,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:04:59,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:59,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:04:59,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:04:59,835 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 24 states. [2020-10-27 14:05:00,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:00,753 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2020-10-27 14:05:00,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:05:00,753 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 132 [2020-10-27 14:05:00,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:00,754 INFO L225 Difference]: With dead ends: 125 [2020-10-27 14:05:00,754 INFO L226 Difference]: Without dead ends: 70 [2020-10-27 14:05:00,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=479, Invalid=1081, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:05:00,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-27 14:05:00,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-10-27 14:05:00,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-27 14:05:00,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-10-27 14:05:00,769 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 132 [2020-10-27 14:05:00,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:00,769 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-10-27 14:05:00,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:05:00,770 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-10-27 14:05:00,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 14:05:00,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:00,771 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 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] [2020-10-27 14:05:00,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:05:00,772 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:00,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:00,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1599930087, now seen corresponding path program 5 times [2020-10-27 14:05:00,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:00,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46676272] [2020-10-27 14:05:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:00,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:00,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:00,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:00,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:05,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:05,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 14:05:05,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:05,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:05:05,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:05,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:05:05,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-27 14:05:05,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:05:05,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:05,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:05,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:05,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:05,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:05,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:05,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:05,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:05,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:05,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:05,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:05,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:05,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:05,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:05,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:05,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:05,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:05:05,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:05,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 14:05:05,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:05,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:05:05,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:05,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:05:05,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:06,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:05:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:06,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:06,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:06,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:06,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:05:06,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:06,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 14:05:06,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:06,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:05:06,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:06,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:05:06,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:06,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:05:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:06,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:06,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:06,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:06,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:05:06,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:06,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 14:05:06,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:06,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:06,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 14:05:06,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:06,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:06,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2440 backedges. 256 proven. 1889 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-27 14:05:06,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46676272] [2020-10-27 14:05:06,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:06,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:05:06,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49945441] [2020-10-27 14:05:06,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:05:06,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:06,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:05:06,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:05:06,484 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 26 states. [2020-10-27 14:05:07,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:07,569 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2020-10-27 14:05:07,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:05:07,570 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 140 [2020-10-27 14:05:07,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:07,571 INFO L225 Difference]: With dead ends: 133 [2020-10-27 14:05:07,571 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 14:05:07,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=540, Invalid=1266, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 14:05:07,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 14:05:07,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2020-10-27 14:05:07,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-27 14:05:07,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-10-27 14:05:07,579 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 140 [2020-10-27 14:05:07,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:07,579 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-10-27 14:05:07,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:05:07,579 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-10-27 14:05:07,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-27 14:05:07,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:07,581 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 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] [2020-10-27 14:05:07,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:05:07,581 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:07,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:07,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1983799907, now seen corresponding path program 6 times [2020-10-27 14:05:07,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:07,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225381243] [2020-10-27 14:05:07,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:07,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:07,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:07,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:07,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:12,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:12,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 14:05:12,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:12,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:05:12,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:12,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:05:12,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 14:05:12,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:05:12,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:12,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:12,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:12,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:12,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:12,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:12,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:05:12,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:12,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:12,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:12,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:12,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:12,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:12,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:12,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:12,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:12,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:05:12,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:12,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 14:05:12,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:12,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:05:12,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:12,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:05:12,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:13,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 14:05:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:13,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:13,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:13,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:13,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:05:13,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:13,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 14:05:13,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:13,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:05:13,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:13,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:05:13,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:13,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:05:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:13,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:13,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:13,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:13,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:05:13,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:13,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 14:05:13,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:13,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:13,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 14:05:13,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:13,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:13,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2754 backedges. 289 proven. 2135 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2020-10-27 14:05:13,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225381243] [2020-10-27 14:05:13,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:13,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:05:13,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391738542] [2020-10-27 14:05:13,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:05:13,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:13,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:05:13,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:05:13,371 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 28 states. [2020-10-27 14:05:14,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:14,534 INFO L93 Difference]: Finished difference Result 141 states and 152 transitions. [2020-10-27 14:05:14,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:05:14,535 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 148 [2020-10-27 14:05:14,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:14,536 INFO L225 Difference]: With dead ends: 141 [2020-10-27 14:05:14,537 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 14:05:14,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=605, Invalid=1465, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 14:05:14,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 14:05:14,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-27 14:05:14,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 14:05:14,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-10-27 14:05:14,545 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 148 [2020-10-27 14:05:14,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:14,545 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-10-27 14:05:14,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:05:14,546 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-10-27 14:05:14,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-27 14:05:14,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:14,547 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 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] [2020-10-27 14:05:14,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:05:14,547 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:14,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:14,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1874945825, now seen corresponding path program 7 times [2020-10-27 14:05:14,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:14,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899162569] [2020-10-27 14:05:14,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:14,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:14,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:14,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:14,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:19,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:19,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 14:05:19,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:19,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:05:19,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:05:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-27 14:05:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:05:19,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:19,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:19,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:19,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:19,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:19,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:19,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:05:19,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:19,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:19,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:19,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:19,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:19,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:19,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:19,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:19,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:19,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 14:05:19,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:19,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 14:05:19,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:05:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:05:19,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:20,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:05:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:20,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:20,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:20,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:20,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 14:05:20,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:20,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-27 14:05:20,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:20,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:05:20,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:20,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:05:20,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:20,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 14:05:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:20,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:20,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:20,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:20,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 14:05:20,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:20,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-27 14:05:20,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:20,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:20,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 14:05:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:20,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:20,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3088 backedges. 324 proven. 2397 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2020-10-27 14:05:20,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899162569] [2020-10-27 14:05:20,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:20,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:05:20,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118111091] [2020-10-27 14:05:20,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:05:20,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:20,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:05:20,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=614, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:05:20,576 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 30 states. [2020-10-27 14:05:21,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:21,880 INFO L93 Difference]: Finished difference Result 149 states and 160 transitions. [2020-10-27 14:05:21,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:05:21,881 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 156 [2020-10-27 14:05:21,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:21,882 INFO L225 Difference]: With dead ends: 149 [2020-10-27 14:05:21,882 INFO L226 Difference]: Without dead ends: 82 [2020-10-27 14:05:21,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=674, Invalid=1678, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 14:05:21,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-27 14:05:21,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2020-10-27 14:05:21,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-27 14:05:21,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-10-27 14:05:21,890 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 156 [2020-10-27 14:05:21,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:21,891 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-10-27 14:05:21,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:05:21,891 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-10-27 14:05:21,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-27 14:05:21,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:21,892 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 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] [2020-10-27 14:05:21,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:05:21,892 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:21,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:21,893 INFO L82 PathProgramCache]: Analyzing trace with hash 117072475, now seen corresponding path program 8 times [2020-10-27 14:05:21,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:21,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732638956] [2020-10-27 14:05:21,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:21,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:21,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:21,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:21,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:26,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:26,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 14:05:26,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:26,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:05:26,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:26,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:05:26,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-27 14:05:26,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:05:26,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:27,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:27,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:27,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:27,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:27,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:27,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:27,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:27,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:27,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:27,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:27,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:27,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:27,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:27,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:27,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:27,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:05:27,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:27,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 14:05:27,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:27,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:05:27,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:27,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:05:27,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:27,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:05:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:27,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:27,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:27,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:27,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:05:27,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:27,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-27 14:05:27,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:27,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:05:27,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:27,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:05:27,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:27,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 14:05:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:27,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:27,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:27,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:27,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:05:27,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:27,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-27 14:05:27,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:27,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:27,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 14:05:27,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:27,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:27,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3442 backedges. 361 proven. 2675 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2020-10-27 14:05:27,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732638956] [2020-10-27 14:05:27,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:27,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 14:05:27,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055800064] [2020-10-27 14:05:27,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 14:05:27,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:27,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 14:05:27,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:05:27,977 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand 32 states. [2020-10-27 14:05:29,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:29,311 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2020-10-27 14:05:29,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:05:29,311 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 164 [2020-10-27 14:05:29,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:29,312 INFO L225 Difference]: With dead ends: 157 [2020-10-27 14:05:29,313 INFO L226 Difference]: Without dead ends: 86 [2020-10-27 14:05:29,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=747, Invalid=1905, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 14:05:29,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-27 14:05:29,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2020-10-27 14:05:29,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 14:05:29,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-10-27 14:05:29,321 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 164 [2020-10-27 14:05:29,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:29,322 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-10-27 14:05:29,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 14:05:29,322 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-10-27 14:05:29,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-27 14:05:29,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:29,323 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 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] [2020-10-27 14:05:29,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:05:29,324 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:29,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:29,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1828815145, now seen corresponding path program 9 times [2020-10-27 14:05:29,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:29,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749804565] [2020-10-27 14:05:29,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:29,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:29,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:29,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:29,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:34,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:34,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-27 14:05:34,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:34,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:05:34,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:34,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:05:34,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 14:05:34,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:05:34,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:34,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:34,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:34,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:34,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:34,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:34,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:05:34,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:34,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:34,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:34,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:34,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:34,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:34,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:34,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:34,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:34,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:05:34,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:34,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 14:05:34,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:34,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:05:34,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:34,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:05:34,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:35,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:05:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:35,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:35,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:35,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:35,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:05:35,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:35,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-27 14:05:35,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:35,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:05:35,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:35,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:05:35,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:35,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 14:05:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:35,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:35,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:35,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:35,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:05:35,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:35,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 14:05:35,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:35,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:35,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 14:05:35,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:35,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:35,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3816 backedges. 400 proven. 2969 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2020-10-27 14:05:35,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749804565] [2020-10-27 14:05:35,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:35,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 14:05:35,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185657014] [2020-10-27 14:05:35,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 14:05:35,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:35,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 14:05:35,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=802, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:05:35,453 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 34 states. [2020-10-27 14:05:36,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:36,974 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2020-10-27 14:05:36,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 14:05:36,975 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 172 [2020-10-27 14:05:36,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:36,976 INFO L225 Difference]: With dead ends: 165 [2020-10-27 14:05:36,977 INFO L226 Difference]: Without dead ends: 90 [2020-10-27 14:05:36,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=824, Invalid=2146, Unknown=0, NotChecked=0, Total=2970 [2020-10-27 14:05:36,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-27 14:05:36,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-10-27 14:05:36,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-27 14:05:36,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2020-10-27 14:05:36,991 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 172 [2020-10-27 14:05:36,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:36,992 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2020-10-27 14:05:36,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-27 14:05:36,992 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2020-10-27 14:05:36,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-27 14:05:36,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:36,995 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 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] [2020-10-27 14:05:36,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:05:36,995 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:36,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:36,996 INFO L82 PathProgramCache]: Analyzing trace with hash 398962259, now seen corresponding path program 10 times [2020-10-27 14:05:36,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:36,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643015541] [2020-10-27 14:05:36,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:37,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:37,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:37,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:37,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:42,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:42,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 14:05:42,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:42,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 14:05:42,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:42,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:05:42,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 14:05:42,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:05:42,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:42,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:42,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:42,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:42,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:42,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:42,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:42,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:42,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:42,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:42,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:42,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:42,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:42,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 14:05:42,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:42,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 14:05:42,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:05:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:05:42,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:42,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:05:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:42,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:42,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:43,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:43,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 14:05:43,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:43,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 14:05:43,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:43,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:05:43,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:43,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:05:43,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:43,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 14:05:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:43,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:43,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:43,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:43,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 14:05:43,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:43,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 14:05:43,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:43,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:43,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 14:05:43,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:43,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:43,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4210 backedges. 441 proven. 3279 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2020-10-27 14:05:43,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643015541] [2020-10-27 14:05:43,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:43,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-27 14:05:43,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629168507] [2020-10-27 14:05:43,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-27 14:05:43,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:43,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-27 14:05:43,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=905, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:05:43,152 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand 36 states. [2020-10-27 14:05:44,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:44,673 INFO L93 Difference]: Finished difference Result 173 states and 184 transitions. [2020-10-27 14:05:44,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 14:05:44,673 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 180 [2020-10-27 14:05:44,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:44,674 INFO L225 Difference]: With dead ends: 173 [2020-10-27 14:05:44,674 INFO L226 Difference]: Without dead ends: 94 [2020-10-27 14:05:44,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=905, Invalid=2401, Unknown=0, NotChecked=0, Total=3306 [2020-10-27 14:05:44,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-27 14:05:44,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2020-10-27 14:05:44,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-27 14:05:44,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2020-10-27 14:05:44,683 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 180 [2020-10-27 14:05:44,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:44,683 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2020-10-27 14:05:44,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-27 14:05:44,684 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2020-10-27 14:05:44,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 14:05:44,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:44,685 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:44,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:05:44,685 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:44,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:44,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1875030223, now seen corresponding path program 11 times [2020-10-27 14:05:44,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:44,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067760152] [2020-10-27 14:05:44,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:44,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:44,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:44,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:44,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:49,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:49,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-27 14:05:49,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:49,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:05:49,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:49,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:05:49,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-27 14:05:49,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:05:49,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:49,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:49,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:49,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:49,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:49,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:49,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:49,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:49,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:49,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:49,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:49,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:49,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:49,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:49,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:50,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:50,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:05:50,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:50,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 14:05:50,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:50,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:05:50,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:50,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 14:05:50,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:50,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:05:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:50,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:50,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:50,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:50,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:05:50,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:50,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 14:05:50,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:50,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:05:50,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:50,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 14:05:50,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:50,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 14:05:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:50,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:50,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:50,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:50,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:05:50,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:50,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 14:05:50,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:50,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:50,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 14:05:50,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:50,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:50,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 484 proven. 3605 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2020-10-27 14:05:50,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067760152] [2020-10-27 14:05:50,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:50,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-27 14:05:50,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175908102] [2020-10-27 14:05:50,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-27 14:05:50,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:50,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-27 14:05:50,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=1014, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:05:50,954 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand 38 states. [2020-10-27 14:05:52,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:52,689 INFO L93 Difference]: Finished difference Result 181 states and 192 transitions. [2020-10-27 14:05:52,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 14:05:52,690 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 188 [2020-10-27 14:05:52,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:52,691 INFO L225 Difference]: With dead ends: 181 [2020-10-27 14:05:52,691 INFO L226 Difference]: Without dead ends: 98 [2020-10-27 14:05:52,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=990, Invalid=2670, Unknown=0, NotChecked=0, Total=3660 [2020-10-27 14:05:52,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-27 14:05:52,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-10-27 14:05:52,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 14:05:52,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2020-10-27 14:05:52,702 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 188 [2020-10-27 14:05:52,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:52,702 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2020-10-27 14:05:52,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-27 14:05:52,702 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2020-10-27 14:05:52,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-27 14:05:52,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:52,705 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:52,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:05:52,707 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:52,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:52,708 INFO L82 PathProgramCache]: Analyzing trace with hash 944522827, now seen corresponding path program 12 times [2020-10-27 14:05:52,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:52,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821981605] [2020-10-27 14:05:52,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:52,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:52,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:52,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:52,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:57,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:57,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-27 14:05:57,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:57,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:05:57,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:57,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:05:57,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-27 14:05:57,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:05:57,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:57,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:57,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:57,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:57,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:57,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:57,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:57,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:57,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:57,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:57,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:57,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:57,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:57,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:57,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:58,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:58,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 14:05:58,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:58,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 14:05:58,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:58,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:05:58,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:58,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 14:05:58,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:58,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:05:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:58,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:58,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:58,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:58,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 14:05:58,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:58,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 14:05:58,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:58,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:05:58,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:58,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 14:05:58,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:58,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 14:05:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:58,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:58,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:59,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:59,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 14:05:59,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:59,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-27 14:05:59,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:59,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:59,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 14:05:59,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:59,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:59,150 INFO L134 CoverageAnalysis]: Checked inductivity of 5058 backedges. 529 proven. 3947 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2020-10-27 14:05:59,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821981605] [2020-10-27 14:05:59,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:59,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-27 14:05:59,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485008956] [2020-10-27 14:05:59,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-27 14:05:59,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:59,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-27 14:05:59,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=1129, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:05:59,152 INFO L87 Difference]: Start difference. First operand 96 states and 100 transitions. Second operand 40 states. [2020-10-27 14:06:00,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:00,848 INFO L93 Difference]: Finished difference Result 189 states and 200 transitions. [2020-10-27 14:06:00,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 14:06:00,849 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 196 [2020-10-27 14:06:00,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:00,850 INFO L225 Difference]: With dead ends: 189 [2020-10-27 14:06:00,850 INFO L226 Difference]: Without dead ends: 102 [2020-10-27 14:06:00,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1079, Invalid=2953, Unknown=0, NotChecked=0, Total=4032 [2020-10-27 14:06:00,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-27 14:06:00,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-10-27 14:06:00,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-27 14:06:00,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2020-10-27 14:06:00,862 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 196 [2020-10-27 14:06:00,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:00,863 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2020-10-27 14:06:00,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-27 14:06:00,863 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2020-10-27 14:06:00,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-27 14:06:00,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:00,864 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:00,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:06:00,864 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:00,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:00,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1649332537, now seen corresponding path program 13 times [2020-10-27 14:06:00,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:00,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960147666] [2020-10-27 14:06:00,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:00,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:00,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:00,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:00,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:05,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:05,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-27 14:06:05,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:05,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 14:06:05,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:05,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:06:05,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-27 14:06:05,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:06:05,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:06,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:06,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:06,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:06,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:06,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:06,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:06:06,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:06,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:06,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:06,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:06,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:06,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:06,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:06,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:06,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:06,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 14:06:06,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:06,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-27 14:06:06,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:06,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:06:06,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:06,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:06:06,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:07,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 14:06:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:07,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:07,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:07,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:07,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 14:06:07,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:07,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-27 14:06:07,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:07,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:06:07,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:07,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:06:07,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:07,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-27 14:06:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:07,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:07,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:07,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:07,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 14:06:07,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:07,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 14:06:07,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:07,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:07,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 14:06:07,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:07,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:07,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 576 proven. 4305 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2020-10-27 14:06:07,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960147666] [2020-10-27 14:06:07,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:07,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-27 14:06:07,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484163230] [2020-10-27 14:06:07,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-27 14:06:07,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:07,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-27 14:06:07,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=1250, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 14:06:07,352 INFO L87 Difference]: Start difference. First operand 100 states and 104 transitions. Second operand 42 states. [2020-10-27 14:06:09,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:09,331 INFO L93 Difference]: Finished difference Result 197 states and 208 transitions. [2020-10-27 14:06:09,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 14:06:09,332 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 204 [2020-10-27 14:06:09,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:09,333 INFO L225 Difference]: With dead ends: 197 [2020-10-27 14:06:09,333 INFO L226 Difference]: Without dead ends: 106 [2020-10-27 14:06:09,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1172, Invalid=3250, Unknown=0, NotChecked=0, Total=4422 [2020-10-27 14:06:09,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-27 14:06:09,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-10-27 14:06:09,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-27 14:06:09,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2020-10-27 14:06:09,345 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 204 [2020-10-27 14:06:09,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:09,345 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2020-10-27 14:06:09,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-27 14:06:09,345 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2020-10-27 14:06:09,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-27 14:06:09,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:09,347 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:09,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:06:09,347 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:09,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:09,348 INFO L82 PathProgramCache]: Analyzing trace with hash 657336899, now seen corresponding path program 14 times [2020-10-27 14:06:09,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:09,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856873386] [2020-10-27 14:06:09,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:09,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:09,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:09,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:09,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:14,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:14,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 14:06:14,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:14,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 14:06:14,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:14,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:06:14,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-27 14:06:14,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:06:14,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:14,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:14,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:14,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:14,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:14,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:14,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:06:14,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:14,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:14,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:14,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:14,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:14,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:14,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:14,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:14,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:14,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:06:14,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:14,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 14:06:14,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:14,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:06:14,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:14,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 14:06:14,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:15,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:06:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:15,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:15,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:15,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:15,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:06:15,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:15,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-27 14:06:15,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:15,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:06:15,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:15,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 14:06:15,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:15,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-27 14:06:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:15,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:15,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:15,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:15,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:06:15,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:15,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 14:06:15,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:15,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:15,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 14:06:15,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:15,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:15,849 INFO L134 CoverageAnalysis]: Checked inductivity of 5986 backedges. 625 proven. 4679 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2020-10-27 14:06:15,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856873386] [2020-10-27 14:06:15,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:15,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-27 14:06:15,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704436918] [2020-10-27 14:06:15,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-27 14:06:15,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:15,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-27 14:06:15,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=515, Invalid=1377, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 14:06:15,851 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand 44 states. [2020-10-27 14:06:17,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:17,968 INFO L93 Difference]: Finished difference Result 205 states and 216 transitions. [2020-10-27 14:06:17,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 14:06:17,969 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 212 [2020-10-27 14:06:17,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:17,970 INFO L225 Difference]: With dead ends: 205 [2020-10-27 14:06:17,970 INFO L226 Difference]: Without dead ends: 110 [2020-10-27 14:06:17,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1269, Invalid=3561, Unknown=0, NotChecked=0, Total=4830 [2020-10-27 14:06:17,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-27 14:06:17,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2020-10-27 14:06:17,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-27 14:06:17,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 112 transitions. [2020-10-27 14:06:17,984 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 112 transitions. Word has length 212 [2020-10-27 14:06:17,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:17,984 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 112 transitions. [2020-10-27 14:06:17,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-27 14:06:17,984 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 112 transitions. [2020-10-27 14:06:17,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-27 14:06:17,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:17,986 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:17,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:06:17,986 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:17,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:17,987 INFO L82 PathProgramCache]: Analyzing trace with hash -2098202433, now seen corresponding path program 15 times [2020-10-27 14:06:17,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:17,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54932556] [2020-10-27 14:06:17,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:18,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:18,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:18,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:18,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:23,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:23,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-27 14:06:23,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:23,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:06:23,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:23,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:06:23,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-27 14:06:23,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:06:23,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:23,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:23,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:23,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:23,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:23,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:23,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:06:23,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:23,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:23,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:23,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:23,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:23,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:23,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:23,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:23,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:23,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 14:06:23,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:23,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-27 14:06:23,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:23,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:06:23,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:23,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 14:06:23,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:24,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:06:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:24,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:24,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:24,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:24,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 14:06:24,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:24,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-27 14:06:24,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:24,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:06:24,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:24,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 14:06:24,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:24,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-27 14:06:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:24,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:24,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:24,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:24,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 14:06:24,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:24,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-27 14:06:24,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:24,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:24,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-27 14:06:24,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:24,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:24,928 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 676 proven. 5069 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2020-10-27 14:06:24,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54932556] [2020-10-27 14:06:24,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:24,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-27 14:06:24,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247368648] [2020-10-27 14:06:24,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-27 14:06:24,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:24,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-27 14:06:24,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=560, Invalid=1510, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 14:06:24,932 INFO L87 Difference]: Start difference. First operand 108 states and 112 transitions. Second operand 46 states. [2020-10-27 14:06:27,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:27,076 INFO L93 Difference]: Finished difference Result 213 states and 224 transitions. [2020-10-27 14:06:27,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-27 14:06:27,076 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 220 [2020-10-27 14:06:27,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:27,078 INFO L225 Difference]: With dead ends: 213 [2020-10-27 14:06:27,078 INFO L226 Difference]: Without dead ends: 114 [2020-10-27 14:06:27,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1370, Invalid=3886, Unknown=0, NotChecked=0, Total=5256 [2020-10-27 14:06:27,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-27 14:06:27,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2020-10-27 14:06:27,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-27 14:06:27,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2020-10-27 14:06:27,088 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 220 [2020-10-27 14:06:27,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:27,088 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2020-10-27 14:06:27,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-27 14:06:27,088 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2020-10-27 14:06:27,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-27 14:06:27,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:27,090 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:27,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:06:27,090 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:27,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:27,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1376999995, now seen corresponding path program 16 times [2020-10-27 14:06:27,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:27,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106268217] [2020-10-27 14:06:27,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:27,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:27,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:27,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:27,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:32,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:32,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-27 14:06:32,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:32,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:06:32,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:32,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:06:32,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-27 14:06:32,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:06:32,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:32,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:32,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:32,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:32,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:32,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:32,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:06:32,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:32,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:32,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:32,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:32,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:32,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:32,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:32,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:32,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:32,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:06:32,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:32,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-27 14:06:32,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:32,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:06:32,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:32,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:06:32,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:33,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:06:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:33,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:33,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:33,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:33,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:06:33,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:33,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-27 14:06:33,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:33,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:06:33,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:33,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:06:33,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:33,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-27 14:06:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:33,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:33,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:34,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:34,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:06:34,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:34,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-27 14:06:34,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:34,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:34,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-27 14:06:34,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:34,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:34,069 INFO L134 CoverageAnalysis]: Checked inductivity of 6994 backedges. 729 proven. 5475 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2020-10-27 14:06:34,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106268217] [2020-10-27 14:06:34,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:34,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-27 14:06:34,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601165134] [2020-10-27 14:06:34,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-27 14:06:34,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:34,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-27 14:06:34,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=607, Invalid=1649, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 14:06:34,075 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand 48 states. [2020-10-27 14:06:36,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:36,340 INFO L93 Difference]: Finished difference Result 221 states and 232 transitions. [2020-10-27 14:06:36,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 14:06:36,340 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 228 [2020-10-27 14:06:36,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:36,342 INFO L225 Difference]: With dead ends: 221 [2020-10-27 14:06:36,342 INFO L226 Difference]: Without dead ends: 118 [2020-10-27 14:06:36,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1475, Invalid=4225, Unknown=0, NotChecked=0, Total=5700 [2020-10-27 14:06:36,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-27 14:06:36,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2020-10-27 14:06:36,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 14:06:36,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 120 transitions. [2020-10-27 14:06:36,352 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 120 transitions. Word has length 228 [2020-10-27 14:06:36,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:36,353 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 120 transitions. [2020-10-27 14:06:36,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-27 14:06:36,353 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 120 transitions. [2020-10-27 14:06:36,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-27 14:06:36,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:36,354 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 17, 17, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:36,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:06:36,355 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:36,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:36,355 INFO L82 PathProgramCache]: Analyzing trace with hash -190509385, now seen corresponding path program 17 times [2020-10-27 14:06:36,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:36,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99576323] [2020-10-27 14:06:36,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:36,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:36,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:36,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:36,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:41,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:41,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 14:06:41,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:41,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 14:06:41,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:06:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 14:06:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:06:41,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:41,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:41,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:41,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:41,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:41,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:41,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:06:41,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:41,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:41,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:41,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:41,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:41,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:41,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:41,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:41,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:41,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:06:41,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:41,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-27 14:06:41,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:41,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:06:41,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:41,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 14:06:41,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:43,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:06:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:43,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:43,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:43,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:43,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:06:43,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:43,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-27 14:06:43,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:06:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 14:06:43,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:43,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-27 14:06:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:43,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:43,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:43,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:43,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:06:43,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:43,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-27 14:06:43,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:43,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:43,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-27 14:06:43,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:43,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:43,655 INFO L134 CoverageAnalysis]: Checked inductivity of 7528 backedges. 784 proven. 5897 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2020-10-27 14:06:43,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99576323] [2020-10-27 14:06:43,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:43,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-27 14:06:43,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124450117] [2020-10-27 14:06:43,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-27 14:06:43,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:43,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-27 14:06:43,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=656, Invalid=1794, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 14:06:43,657 INFO L87 Difference]: Start difference. First operand 116 states and 120 transitions. Second operand 50 states. [2020-10-27 14:06:46,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:46,110 INFO L93 Difference]: Finished difference Result 229 states and 240 transitions. [2020-10-27 14:06:46,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-27 14:06:46,110 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 236 [2020-10-27 14:06:46,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:46,112 INFO L225 Difference]: With dead ends: 229 [2020-10-27 14:06:46,112 INFO L226 Difference]: Without dead ends: 122 [2020-10-27 14:06:46,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1584, Invalid=4578, Unknown=0, NotChecked=0, Total=6162 [2020-10-27 14:06:46,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-27 14:06:46,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2020-10-27 14:06:46,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-27 14:06:46,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2020-10-27 14:06:46,122 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 236 [2020-10-27 14:06:46,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:46,122 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2020-10-27 14:06:46,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-27 14:06:46,123 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2020-10-27 14:06:46,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-27 14:06:46,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:46,124 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:46,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:06:46,125 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:46,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:46,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1436669491, now seen corresponding path program 18 times [2020-10-27 14:06:46,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:46,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211611694] [2020-10-27 14:06:46,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:46,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:46,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:46,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:46,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:51,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:51,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-27 14:06:51,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:51,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 14:06:51,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:51,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:06:51,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-10-27 14:06:51,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:06:51,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:51,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:51,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:51,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:51,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:51,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:51,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:06:51,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:51,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:51,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:51,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:51,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:51,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:51,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:51,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 14:06:51,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:51,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-27 14:06:51,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:51,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:06:51,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:51,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 14:06:51,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:52,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:06:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:52,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:52,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:53,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:53,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 14:06:53,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:53,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-27 14:06:53,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:53,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:06:53,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:53,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 14:06:53,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:53,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-27 14:06:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:53,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:53,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:53,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:53,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 14:06:53,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:53,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-27 14:06:53,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:53,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:53,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-27 14:06:53,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:53,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:53,339 INFO L134 CoverageAnalysis]: Checked inductivity of 8082 backedges. 841 proven. 6335 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2020-10-27 14:06:53,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211611694] [2020-10-27 14:06:53,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:53,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-27 14:06:53,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195262463] [2020-10-27 14:06:53,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-27 14:06:53,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:53,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-27 14:06:53,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=1945, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 14:06:53,341 INFO L87 Difference]: Start difference. First operand 120 states and 124 transitions. Second operand 52 states. [2020-10-27 14:06:55,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:55,882 INFO L93 Difference]: Finished difference Result 237 states and 248 transitions. [2020-10-27 14:06:55,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-27 14:06:55,883 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 244 [2020-10-27 14:06:55,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:55,884 INFO L225 Difference]: With dead ends: 237 [2020-10-27 14:06:55,884 INFO L226 Difference]: Without dead ends: 126 [2020-10-27 14:06:55,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1697, Invalid=4945, Unknown=0, NotChecked=0, Total=6642 [2020-10-27 14:06:55,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-27 14:06:55,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2020-10-27 14:06:55,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-27 14:06:55,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 128 transitions. [2020-10-27 14:06:55,891 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 128 transitions. Word has length 244 [2020-10-27 14:06:55,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:55,892 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 128 transitions. [2020-10-27 14:06:55,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-27 14:06:55,892 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 128 transitions. [2020-10-27 14:06:55,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-27 14:06:55,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:55,894 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:55,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:06:55,894 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:55,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:55,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1225363281, now seen corresponding path program 19 times [2020-10-27 14:06:55,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:55,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100572133] [2020-10-27 14:06:55,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:55,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:55,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:56,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:56,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:00,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:00,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-27 14:07:00,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:07:00,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:07:00,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:00,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:07:00,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 14:07:00,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:07:00,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:01,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:07:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:01,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:01,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:01,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:07:01,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:01,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:07:01,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:01,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:01,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:07:01,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:01,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:01,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:07:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:01,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:01,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:01,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:01,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 14:07:01,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:01,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-27 14:07:01,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:01,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 14:07:01,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:01,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:07:01,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:02,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:07:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:02,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:02,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:02,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:02,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 14:07:02,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:02,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-27 14:07:02,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 14:07:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:07:02,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:02,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-27 14:07:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:02,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:02,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:03,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:03,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 14:07:03,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:03,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-27 14:07:03,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:03,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:03,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 14:07:03,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:03,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:03,061 INFO L134 CoverageAnalysis]: Checked inductivity of 8656 backedges. 900 proven. 6789 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2020-10-27 14:07:03,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100572133] [2020-10-27 14:07:03,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:07:03,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-27 14:07:03,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113353958] [2020-10-27 14:07:03,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-27 14:07:03,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:07:03,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-27 14:07:03,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=760, Invalid=2102, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 14:07:03,063 INFO L87 Difference]: Start difference. First operand 124 states and 128 transitions. Second operand 54 states. [2020-10-27 14:07:05,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:07:05,806 INFO L93 Difference]: Finished difference Result 245 states and 256 transitions. [2020-10-27 14:07:05,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-27 14:07:05,807 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 252 [2020-10-27 14:07:05,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:07:05,808 INFO L225 Difference]: With dead ends: 245 [2020-10-27 14:07:05,809 INFO L226 Difference]: Without dead ends: 130 [2020-10-27 14:07:05,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1814, Invalid=5326, Unknown=0, NotChecked=0, Total=7140 [2020-10-27 14:07:05,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-27 14:07:05,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-10-27 14:07:05,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-27 14:07:05,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 132 transitions. [2020-10-27 14:07:05,818 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 132 transitions. Word has length 252 [2020-10-27 14:07:05,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:07:05,819 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 132 transitions. [2020-10-27 14:07:05,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-27 14:07:05,819 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 132 transitions. [2020-10-27 14:07:05,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-27 14:07:05,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:07:05,821 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 20, 20, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:07:05,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:07:05,821 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:07:05,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:07:05,822 INFO L82 PathProgramCache]: Analyzing trace with hash 2105515563, now seen corresponding path program 20 times [2020-10-27 14:07:05,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:07:05,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435902519] [2020-10-27 14:07:05,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:07:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:05,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:05,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:05,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:05,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking...