/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:25:17,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:25:17,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:25:17,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:25:17,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:25:17,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:25:17,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:25:17,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:25:17,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:25:17,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:25:17,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:25:17,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:25:17,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:25:17,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:25:17,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:25:17,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:25:17,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:25:17,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:25:17,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:25:17,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:25:17,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:25:17,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:25:17,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:25:17,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:25:17,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:25:17,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:25:17,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:25:17,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:25:17,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:25:17,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:25:17,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:25:17,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:25:17,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:25:17,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:25:17,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:25:17,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:25:17,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:25:17,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:25:17,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:25:17,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:25:17,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:25:17,607 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 05:25:17,660 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:25:17,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:25:17,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:25:17,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:25:17,666 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:25:17,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:25:17,667 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:25:17,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:25:17,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:25:17,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:25:17,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:25:17,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:25:17,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:25:17,669 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:25:17,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:25:17,670 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:25:17,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:25:17,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:25:17,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:25:17,671 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:25:17,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:25:17,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:25:17,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:25:17,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:25:17,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:25:17,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:25:17,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:25:17,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:25:17,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:25:17,673 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:25:18,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:25:18,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:25:18,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:25:18,103 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:25:18,103 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:25:18,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-27 05:25:18,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d72b6691/76179fa9168c41e4b2690d2624440142/FLAG8578e2a7d [2020-10-27 05:25:18,955 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:25:18,955 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-27 05:25:18,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d72b6691/76179fa9168c41e4b2690d2624440142/FLAG8578e2a7d [2020-10-27 05:25:19,194 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d72b6691/76179fa9168c41e4b2690d2624440142 [2020-10-27 05:25:19,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:25:19,208 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:25:19,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:25:19,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:25:19,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:25:19,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:25:19" (1/1) ... [2020-10-27 05:25:19,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b17f712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:19, skipping insertion in model container [2020-10-27 05:25:19,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:25:19" (1/1) ... [2020-10-27 05:25:19,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:25:19,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:25:19,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:25:19,733 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:25:19,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:25:19,959 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:25:19,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:19 WrapperNode [2020-10-27 05:25:19,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:25:19,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:25:19,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:25:19,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:25:19,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:19" (1/1) ... [2020-10-27 05:25:19,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:19" (1/1) ... [2020-10-27 05:25:19,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:19" (1/1) ... [2020-10-27 05:25:19,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:19" (1/1) ... [2020-10-27 05:25:20,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:19" (1/1) ... [2020-10-27 05:25:20,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:19" (1/1) ... [2020-10-27 05:25:20,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:19" (1/1) ... [2020-10-27 05:25:20,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:25:20,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:25:20,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:25:20,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:25:20,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:19" (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 05:25:20,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:25:20,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:25:20,194 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:25:20,194 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:25:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:25:20,195 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:25:20,196 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:25:20,196 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:25:20,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:25:20,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:25:20,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:25:20,198 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:25:20,198 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:25:20,198 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:25:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:25:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:25:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:25:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:25:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:25:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:25:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-27 05:25:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:25:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:25:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:25:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:25:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:25:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:25:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:25:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:25:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:25:21,462 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:25:21,462 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:25:21,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:25:21 BoogieIcfgContainer [2020-10-27 05:25:21,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:25:21,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:25:21,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:25:21,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:25:21,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:25:19" (1/3) ... [2020-10-27 05:25:21,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37aaaab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:25:21, skipping insertion in model container [2020-10-27 05:25:21,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:19" (2/3) ... [2020-10-27 05:25:21,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37aaaab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:25:21, skipping insertion in model container [2020-10-27 05:25:21,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:25:21" (3/3) ... [2020-10-27 05:25:21,485 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-27 05:25:21,501 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:25:21,508 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:25:21,524 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:25:21,577 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:25:21,578 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:25:21,578 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:25:21,578 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:25:21,578 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:25:21,579 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:25:21,579 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:25:21,579 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:25:21,618 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states. [2020-10-27 05:25:21,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 05:25:21,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:25:21,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:25:21,648 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:25:21,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:25:21,655 INFO L82 PathProgramCache]: Analyzing trace with hash 539341397, now seen corresponding path program 1 times [2020-10-27 05:25:21,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:25:21,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872779820] [2020-10-27 05:25:21,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:25:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:25:22,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:22,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:22,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:22,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:23,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:23,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:23,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:24,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:26,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:25:26,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 05:25:26,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:25:26,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 05:25:26,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:25:26,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:25:26,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 05:25:26,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 05:25:26,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:25:27,356 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:25:27,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:25:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:25:27,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:27,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:25:27,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:25:27,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:25:27,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:25:27,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:25:27,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:25:27,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:25:27,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:25:27,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:25:27,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:25:27,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872779820] [2020-10-27 05:25:27,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:25:27,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:25:27,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022894159] [2020-10-27 05:25:27,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:25:27,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:25:27,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:25:27,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:25:27,482 INFO L87 Difference]: Start difference. First operand 263 states. Second operand 5 states. [2020-10-27 05:25:28,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:25:28,827 INFO L93 Difference]: Finished difference Result 481 states and 780 transitions. [2020-10-27 05:25:28,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:25:28,829 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-27 05:25:28,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:25:28,859 INFO L225 Difference]: With dead ends: 481 [2020-10-27 05:25:28,861 INFO L226 Difference]: Without dead ends: 256 [2020-10-27 05:25:28,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:25:28,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-27 05:25:28,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2020-10-27 05:25:28,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-27 05:25:28,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 379 transitions. [2020-10-27 05:25:28,939 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 379 transitions. Word has length 96 [2020-10-27 05:25:28,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:25:28,939 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 379 transitions. [2020-10-27 05:25:28,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:25:28,940 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 379 transitions. [2020-10-27 05:25:28,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-27 05:25:28,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:25:28,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:25:28,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:25:28,947 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:25:28,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:25:28,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1691781184, now seen corresponding path program 1 times [2020-10-27 05:25:28,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:25:28,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533689554] [2020-10-27 05:25:28,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:25:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:25:29,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:29,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:29,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:29,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:29,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:29,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:29,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:29,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:29,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:34,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:25:34,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 05:25:34,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:25:34,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 05:25:34,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:25:34,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:25:34,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:25:34,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 05:25:34,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:25:34,535 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:25:34,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:25:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:25:34,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:34,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:25:34,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:25:34,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:25:34,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:25:34,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:25:34,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:25:34,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:25:34,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:25:34,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:25:34,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:25:34,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533689554] [2020-10-27 05:25:34,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:25:34,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:25:34,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489882165] [2020-10-27 05:25:34,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:25:34,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:25:34,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:25:34,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:25:34,624 INFO L87 Difference]: Start difference. First operand 256 states and 379 transitions. Second operand 9 states. [2020-10-27 05:25:35,084 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:25:40,196 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 05:25:40,588 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:25:41,007 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-27 05:25:41,414 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 05:25:41,771 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 05:25:42,244 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 05:25:42,591 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:25:43,004 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 05:25:43,435 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-27 05:25:43,788 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 05:25:43,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:25:43,817 INFO L93 Difference]: Finished difference Result 2162 states and 3399 transitions. [2020-10-27 05:25:43,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 05:25:43,818 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 135 [2020-10-27 05:25:43,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:25:43,834 INFO L225 Difference]: With dead ends: 2162 [2020-10-27 05:25:43,834 INFO L226 Difference]: Without dead ends: 2020 [2020-10-27 05:25:43,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=237, Invalid=575, Unknown=0, NotChecked=0, Total=812 [2020-10-27 05:25:43,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2020-10-27 05:25:43,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 452. [2020-10-27 05:25:43,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2020-10-27 05:25:43,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 687 transitions. [2020-10-27 05:25:43,923 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 687 transitions. Word has length 135 [2020-10-27 05:25:43,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:25:43,924 INFO L481 AbstractCegarLoop]: Abstraction has 452 states and 687 transitions. [2020-10-27 05:25:43,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:25:43,924 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 687 transitions. [2020-10-27 05:25:43,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-27 05:25:43,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:25:43,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:25:43,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:25:43,930 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:25:43,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:25:43,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1603527105, now seen corresponding path program 1 times [2020-10-27 05:25:43,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:25:43,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881340248] [2020-10-27 05:25:43,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:25:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:25:43,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:44,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:44,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:44,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:44,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:44,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:44,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:44,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:44,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:48,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:48,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:48,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:25:48,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 05:25:48,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:25:48,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 05:25:48,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:25:48,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:25:48,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 05:25:48,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 05:25:48,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:25:49,291 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:25:49,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:25:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:25:49,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:49,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:25:49,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:25:49,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:25:49,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:25:49,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:25:49,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:25:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:25:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:25:49,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:25:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:25:49,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881340248] [2020-10-27 05:25:49,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:25:49,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:25:49,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027355401] [2020-10-27 05:25:49,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:25:49,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:25:49,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:25:49,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:25:49,364 INFO L87 Difference]: Start difference. First operand 452 states and 687 transitions. Second operand 4 states. [2020-10-27 05:25:49,674 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 05:25:50,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:25:50,887 INFO L93 Difference]: Finished difference Result 1077 states and 1674 transitions. [2020-10-27 05:25:50,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:25:50,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-10-27 05:25:50,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:25:50,897 INFO L225 Difference]: With dead ends: 1077 [2020-10-27 05:25:50,897 INFO L226 Difference]: Without dead ends: 679 [2020-10-27 05:25:50,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:25:50,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2020-10-27 05:25:50,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 676. [2020-10-27 05:25:50,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 676 states. [2020-10-27 05:25:50,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1039 transitions. [2020-10-27 05:25:50,967 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1039 transitions. Word has length 137 [2020-10-27 05:25:50,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:25:50,970 INFO L481 AbstractCegarLoop]: Abstraction has 676 states and 1039 transitions. [2020-10-27 05:25:50,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:25:50,970 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1039 transitions. [2020-10-27 05:25:50,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 05:25:50,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:25:50,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:25:50,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:25:50,974 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:25:50,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:25:50,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1531156767, now seen corresponding path program 1 times [2020-10-27 05:25:50,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:25:50,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000632109] [2020-10-27 05:25:50,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:25:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:25:51,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:51,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:51,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:51,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:51,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:51,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:51,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:51,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:52,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:52,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:52,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:52,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:53,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:56,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:25:56,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 05:25:56,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:25:56,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 05:25:56,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:25:56,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:25:56,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:25:56,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 05:25:56,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:25:56,570 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:25:56,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:25:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:25:56,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:56,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:25:56,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:25:56,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:25:56,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 05:25:56,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:25:56,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:25:56,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:25:56,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:25:56,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:25:56,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:25:56,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000632109] [2020-10-27 05:25:56,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:25:56,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:25:56,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652527776] [2020-10-27 05:25:56,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:25:56,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:25:56,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:25:56,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:25:56,670 INFO L87 Difference]: Start difference. First operand 676 states and 1039 transitions. Second operand 7 states. [2020-10-27 05:25:57,094 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 05:25:58,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:25:58,549 INFO L93 Difference]: Finished difference Result 1517 states and 2367 transitions. [2020-10-27 05:25:58,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:25:58,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-10-27 05:25:58,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:25:58,556 INFO L225 Difference]: With dead ends: 1517 [2020-10-27 05:25:58,557 INFO L226 Difference]: Without dead ends: 920 [2020-10-27 05:25:58,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:25:58,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-10-27 05:25:58,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 672. [2020-10-27 05:25:58,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 672 states. [2020-10-27 05:25:58,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1029 transitions. [2020-10-27 05:25:58,615 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1029 transitions. Word has length 139 [2020-10-27 05:25:58,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:25:58,616 INFO L481 AbstractCegarLoop]: Abstraction has 672 states and 1029 transitions. [2020-10-27 05:25:58,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:25:58,616 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1029 transitions. [2020-10-27 05:25:58,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 05:25:58,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:25:58,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:25:58,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:25:58,619 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:25:58,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:25:58,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1401394395, now seen corresponding path program 1 times [2020-10-27 05:25:58,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:25:58,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265794154] [2020-10-27 05:25:58,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:25:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:25:58,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:58,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:58,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:58,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:58,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:58,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:58,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:59,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:00,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:00,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:00,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:00,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:01,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:03,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:26:03,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 05:26:03,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:26:03,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 05:26:03,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:26:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:26:03,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:26:03,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 05:26:03,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:26:04,086 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:26:04,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:26:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:04,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:04,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:26:04,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:26:04,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:26:04,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 05:26:04,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:26:04,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:26:04,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:26:04,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:26:04,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:26:04,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:26:04,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265794154] [2020-10-27 05:26:04,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:26:04,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:26:04,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250882361] [2020-10-27 05:26:04,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:26:04,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:26:04,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:26:04,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:26:04,224 INFO L87 Difference]: Start difference. First operand 672 states and 1029 transitions. Second operand 7 states. [2020-10-27 05:26:04,556 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:26:05,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:26:05,949 INFO L93 Difference]: Finished difference Result 1388 states and 2158 transitions. [2020-10-27 05:26:05,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:26:05,950 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-10-27 05:26:05,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:26:05,955 INFO L225 Difference]: With dead ends: 1388 [2020-10-27 05:26:05,955 INFO L226 Difference]: Without dead ends: 840 [2020-10-27 05:26:05,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 05:26:05,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2020-10-27 05:26:06,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 672. [2020-10-27 05:26:06,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 672 states. [2020-10-27 05:26:06,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1027 transitions. [2020-10-27 05:26:06,020 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1027 transitions. Word has length 139 [2020-10-27 05:26:06,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:26:06,020 INFO L481 AbstractCegarLoop]: Abstraction has 672 states and 1027 transitions. [2020-10-27 05:26:06,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:26:06,021 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1027 transitions. [2020-10-27 05:26:06,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 05:26:06,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:26:06,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:26:06,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:26:06,024 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:26:06,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:26:06,024 INFO L82 PathProgramCache]: Analyzing trace with hash 219417167, now seen corresponding path program 1 times [2020-10-27 05:26:06,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:26:06,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405964392] [2020-10-27 05:26:06,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:26:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:06,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:06,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:06,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:06,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:06,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:06,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:06,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:06,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:06,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:06,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:06,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:06,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:07,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:11,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:26:11,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 05:26:11,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:26:11,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 05:26:11,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:26:11,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:26:11,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:26:11,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 05:26:11,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:26:11,509 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:26:11,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:26:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:11,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:11,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:26:11,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:26:11,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:26:11,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 05:26:11,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:26:11,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:26:11,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:26:11,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:26:11,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:26:11,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:26:11,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405964392] [2020-10-27 05:26:11,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:26:11,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:26:11,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879703616] [2020-10-27 05:26:11,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:26:11,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:26:11,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:26:11,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:26:11,624 INFO L87 Difference]: Start difference. First operand 672 states and 1027 transitions. Second operand 7 states. [2020-10-27 05:26:11,959 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 05:26:13,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:26:13,302 INFO L93 Difference]: Finished difference Result 1213 states and 1875 transitions. [2020-10-27 05:26:13,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:26:13,303 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-10-27 05:26:13,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:26:13,309 INFO L225 Difference]: With dead ends: 1213 [2020-10-27 05:26:13,309 INFO L226 Difference]: Without dead ends: 676 [2020-10-27 05:26:13,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:26:13,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2020-10-27 05:26:13,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 668. [2020-10-27 05:26:13,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 668 states. [2020-10-27 05:26:13,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1017 transitions. [2020-10-27 05:26:13,367 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1017 transitions. Word has length 139 [2020-10-27 05:26:13,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:26:13,367 INFO L481 AbstractCegarLoop]: Abstraction has 668 states and 1017 transitions. [2020-10-27 05:26:13,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:26:13,367 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1017 transitions. [2020-10-27 05:26:13,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 05:26:13,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:26:13,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:26:13,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:26:13,370 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:26:13,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:26:13,371 INFO L82 PathProgramCache]: Analyzing trace with hash -160511147, now seen corresponding path program 1 times [2020-10-27 05:26:13,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:26:13,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048746670] [2020-10-27 05:26:13,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:26:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:13,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:13,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:13,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:13,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:13,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:13,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:13,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:13,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:14,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:14,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:14,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:14,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:14,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:18,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:26:18,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 05:26:18,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:26:18,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 05:26:18,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:26:18,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:26:18,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:26:18,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 05:26:18,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:26:18,816 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:26:18,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:26:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:18,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:18,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:26:18,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:26:18,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:26:18,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 05:26:18,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:26:18,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:26:18,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:26:18,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:26:18,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:26:18,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:26:18,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048746670] [2020-10-27 05:26:18,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:26:18,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:26:18,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564339805] [2020-10-27 05:26:18,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:26:18,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:26:18,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:26:18,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:26:18,893 INFO L87 Difference]: Start difference. First operand 668 states and 1017 transitions. Second operand 6 states. [2020-10-27 05:26:19,277 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:26:21,037 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 05:26:21,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:26:21,057 INFO L93 Difference]: Finished difference Result 1663 states and 2576 transitions. [2020-10-27 05:26:21,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:26:21,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-10-27 05:26:21,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:26:21,064 INFO L225 Difference]: With dead ends: 1663 [2020-10-27 05:26:21,064 INFO L226 Difference]: Without dead ends: 1047 [2020-10-27 05:26:21,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:26:21,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2020-10-27 05:26:21,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1044. [2020-10-27 05:26:21,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1044 states. [2020-10-27 05:26:21,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1606 transitions. [2020-10-27 05:26:21,160 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1606 transitions. Word has length 139 [2020-10-27 05:26:21,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:26:21,161 INFO L481 AbstractCegarLoop]: Abstraction has 1044 states and 1606 transitions. [2020-10-27 05:26:21,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:26:21,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1606 transitions. [2020-10-27 05:26:21,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 05:26:21,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:26:21,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:26:21,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:26:21,165 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:26:21,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:26:21,165 INFO L82 PathProgramCache]: Analyzing trace with hash 113678074, now seen corresponding path program 1 times [2020-10-27 05:26:21,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:26:21,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261956936] [2020-10-27 05:26:21,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:26:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:21,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:21,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:21,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:21,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:21,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:21,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:21,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:21,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:22,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:22,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:26,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:26:26,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 05:26:26,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:26:26,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 05:26:26,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:26:26,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:26:26,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:26:26,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 05:26:26,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:26:26,588 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:26:26,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:26:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:26,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:26,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:26:26,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:26:26,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:26:26,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:26:26,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:26:26,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:26:26,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:26:26,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:26:26,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:26:26,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:26:26,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261956936] [2020-10-27 05:26:26,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:26:26,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:26:26,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062775607] [2020-10-27 05:26:26,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:26:26,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:26:26,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:26:26,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:26:26,674 INFO L87 Difference]: Start difference. First operand 1044 states and 1606 transitions. Second operand 7 states. [2020-10-27 05:26:27,017 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 05:26:28,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:26:28,402 INFO L93 Difference]: Finished difference Result 2123 states and 3296 transitions. [2020-10-27 05:26:28,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:26:28,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-10-27 05:26:28,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:26:28,411 INFO L225 Difference]: With dead ends: 2123 [2020-10-27 05:26:28,411 INFO L226 Difference]: Without dead ends: 1198 [2020-10-27 05:26:28,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:26:28,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2020-10-27 05:26:28,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1044. [2020-10-27 05:26:28,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1044 states. [2020-10-27 05:26:28,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1602 transitions. [2020-10-27 05:26:28,516 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1602 transitions. Word has length 139 [2020-10-27 05:26:28,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:26:28,516 INFO L481 AbstractCegarLoop]: Abstraction has 1044 states and 1602 transitions. [2020-10-27 05:26:28,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:26:28,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1602 transitions. [2020-10-27 05:26:28,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 05:26:28,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:26:28,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:26:28,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:26:28,520 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:26:28,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:26:28,521 INFO L82 PathProgramCache]: Analyzing trace with hash -425521908, now seen corresponding path program 1 times [2020-10-27 05:26:28,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:26:28,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669540256] [2020-10-27 05:26:28,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:26:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:28,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:28,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:28,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:28,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:28,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:28,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:28,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:28,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:30,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:30,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:30,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:30,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:30,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:33,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:26:33,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 05:26:33,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:26:33,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 05:26:33,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:26:33,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:26:33,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:26:33,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 05:26:33,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:26:34,117 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:26:34,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:26:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:34,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:34,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:26:34,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:26:34,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:26:34,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 05:26:34,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:26:34,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:26:34,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:26:34,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:26:34,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:26:34,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:26:34,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669540256] [2020-10-27 05:26:34,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:26:34,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:26:34,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670166884] [2020-10-27 05:26:34,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:26:34,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:26:34,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:26:34,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:26:34,205 INFO L87 Difference]: Start difference. First operand 1044 states and 1602 transitions. Second operand 11 states. [2020-10-27 05:26:34,694 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:26:38,418 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-27 05:26:38,789 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 05:26:39,154 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 05:26:39,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:26:39,339 INFO L93 Difference]: Finished difference Result 5603 states and 8768 transitions. [2020-10-27 05:26:39,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 05:26:39,339 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 139 [2020-10-27 05:26:39,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:26:39,364 INFO L225 Difference]: With dead ends: 5603 [2020-10-27 05:26:39,364 INFO L226 Difference]: Without dead ends: 4788 [2020-10-27 05:26:39,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=185, Invalid=627, Unknown=0, NotChecked=0, Total=812 [2020-10-27 05:26:39,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4788 states. [2020-10-27 05:26:39,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4788 to 1184. [2020-10-27 05:26:39,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1184 states. [2020-10-27 05:26:39,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1802 transitions. [2020-10-27 05:26:39,573 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1802 transitions. Word has length 139 [2020-10-27 05:26:39,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:26:39,574 INFO L481 AbstractCegarLoop]: Abstraction has 1184 states and 1802 transitions. [2020-10-27 05:26:39,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:26:39,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1802 transitions. [2020-10-27 05:26:39,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 05:26:39,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:26:39,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:26:39,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:26:39,578 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:26:39,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:26:39,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1125410238, now seen corresponding path program 1 times [2020-10-27 05:26:39,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:26:39,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764773851] [2020-10-27 05:26:39,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:26:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:39,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:39,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:39,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:39,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:39,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:39,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:39,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:39,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:40,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:40,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:44,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:26:44,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 05:26:44,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:26:44,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 05:26:44,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:26:44,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:26:44,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:26:44,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 05:26:44,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:26:45,037 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:26:45,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:26:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:45,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:45,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:26:45,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:26:45,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:26:45,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:26:45,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:26:45,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:26:45,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:26:45,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:26:45,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:26:45,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:26:45,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764773851] [2020-10-27 05:26:45,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:26:45,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:26:45,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801866682] [2020-10-27 05:26:45,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:26:45,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:26:45,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:26:45,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:26:45,107 INFO L87 Difference]: Start difference. First operand 1184 states and 1802 transitions. Second operand 7 states. [2020-10-27 05:26:45,494 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 05:26:47,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:26:47,082 INFO L93 Difference]: Finished difference Result 2717 states and 4200 transitions. [2020-10-27 05:26:47,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:26:47,083 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-10-27 05:26:47,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:26:47,091 INFO L225 Difference]: With dead ends: 2717 [2020-10-27 05:26:47,091 INFO L226 Difference]: Without dead ends: 1602 [2020-10-27 05:26:47,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:26:47,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2020-10-27 05:26:47,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1046. [2020-10-27 05:26:47,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-10-27 05:26:47,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1594 transitions. [2020-10-27 05:26:47,264 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1594 transitions. Word has length 140 [2020-10-27 05:26:47,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:26:47,265 INFO L481 AbstractCegarLoop]: Abstraction has 1046 states and 1594 transitions. [2020-10-27 05:26:47,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:26:47,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1594 transitions. [2020-10-27 05:26:47,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-27 05:26:47,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:26:47,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:26:47,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:26:47,270 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:26:47,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:26:47,270 INFO L82 PathProgramCache]: Analyzing trace with hash 623343317, now seen corresponding path program 1 times [2020-10-27 05:26:47,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:26:47,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733569333] [2020-10-27 05:26:47,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:26:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:47,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:47,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:47,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:47,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:47,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:47,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:47,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:47,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:47,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:47,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:47,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:51,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:51,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:51,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:52,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:26:52,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 05:26:52,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:26:52,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 05:26:52,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:26:52,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:26:52,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:26:52,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 05:26:52,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:26:52,906 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:26:52,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:26:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:52,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:52,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:26:52,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:26:52,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:26:52,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 05:26:52,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:26:52,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:26:52,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:26:52,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:26:52,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:26:52,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:26:52,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733569333] [2020-10-27 05:26:52,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:26:52,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:26:52,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696050861] [2020-10-27 05:26:52,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:26:52,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:26:52,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:26:52,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:26:52,958 INFO L87 Difference]: Start difference. First operand 1046 states and 1594 transitions. Second operand 10 states. [2020-10-27 05:26:53,314 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 05:26:56,230 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:26:56,593 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-27 05:26:56,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:26:56,698 INFO L93 Difference]: Finished difference Result 5171 states and 8091 transitions. [2020-10-27 05:26:56,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:26:56,698 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 141 [2020-10-27 05:26:56,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:26:56,715 INFO L225 Difference]: With dead ends: 5171 [2020-10-27 05:26:56,716 INFO L226 Difference]: Without dead ends: 4491 [2020-10-27 05:26:56,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2020-10-27 05:26:56,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4491 states. [2020-10-27 05:26:56,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4491 to 1054. [2020-10-27 05:26:56,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1054 states. [2020-10-27 05:26:56,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1606 transitions. [2020-10-27 05:26:56,994 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1606 transitions. Word has length 141 [2020-10-27 05:26:56,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:26:56,995 INFO L481 AbstractCegarLoop]: Abstraction has 1054 states and 1606 transitions. [2020-10-27 05:26:56,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:26:56,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1606 transitions. [2020-10-27 05:26:56,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-27 05:26:56,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:26:56,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:26:56,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:26:56,999 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:26:57,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:26:57,000 INFO L82 PathProgramCache]: Analyzing trace with hash -742786017, now seen corresponding path program 1 times [2020-10-27 05:26:57,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:26:57,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662907215] [2020-10-27 05:26:57,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:26:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:57,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:57,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:57,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:57,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:57,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:57,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:57,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:57,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:57,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:57,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:59,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:59,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:59,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:59,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:02,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:02,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 05:27:02,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:27:02,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 05:27:02,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:27:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:27:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 05:27:02,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:27:02,512 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:27:02,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:27:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:02,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:02,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:02,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:27:02,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:27:02,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 05:27:02,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:02,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:27:02,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:27:02,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:27:02,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:27:02,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:27:02,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662907215] [2020-10-27 05:27:02,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:27:02,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:27:02,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8369712] [2020-10-27 05:27:02,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:27:02,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:27:02,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:27:02,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:27:02,609 INFO L87 Difference]: Start difference. First operand 1054 states and 1606 transitions. Second operand 8 states. [2020-10-27 05:27:02,952 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 05:27:05,681 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 05:27:06,061 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:27:06,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:27:06,088 INFO L93 Difference]: Finished difference Result 5578 states and 8672 transitions. [2020-10-27 05:27:06,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:27:06,088 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-10-27 05:27:06,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:27:06,111 INFO L225 Difference]: With dead ends: 5578 [2020-10-27 05:27:06,112 INFO L226 Difference]: Without dead ends: 4607 [2020-10-27 05:27:06,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 05:27:06,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4607 states. [2020-10-27 05:27:06,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4607 to 1290. [2020-10-27 05:27:06,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1290 states. [2020-10-27 05:27:06,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1934 transitions. [2020-10-27 05:27:06,421 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1934 transitions. Word has length 142 [2020-10-27 05:27:06,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:27:06,422 INFO L481 AbstractCegarLoop]: Abstraction has 1290 states and 1934 transitions. [2020-10-27 05:27:06,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:27:06,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1934 transitions. [2020-10-27 05:27:06,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-27 05:27:06,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:27:06,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:27:06,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:27:06,427 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:27:06,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:27:06,427 INFO L82 PathProgramCache]: Analyzing trace with hash -798417365, now seen corresponding path program 1 times [2020-10-27 05:27:06,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:27:06,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525194476] [2020-10-27 05:27:06,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:27:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:06,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:06,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:06,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:06,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:06,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:06,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:06,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:06,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:07,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:07,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:08,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:08,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:08,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:08,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:11,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:11,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 05:27:11,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:27:11,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 05:27:11,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:27:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 05:27:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 05:27:11,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:27:11,766 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:27:11,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:27:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:11,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:11,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:11,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:27:11,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:27:11,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:27:11,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:27:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:27:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:27:11,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:27:11,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:27:11,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525194476] [2020-10-27 05:27:11,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:27:11,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:27:11,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787855831] [2020-10-27 05:27:11,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:27:11,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:27:11,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:27:11,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:27:11,813 INFO L87 Difference]: Start difference. First operand 1290 states and 1934 transitions. Second operand 4 states. [2020-10-27 05:27:12,142 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 05:27:13,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:27:13,827 INFO L93 Difference]: Finished difference Result 2488 states and 3776 transitions. [2020-10-27 05:27:13,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:27:13,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-10-27 05:27:13,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:27:13,839 INFO L225 Difference]: With dead ends: 2488 [2020-10-27 05:27:13,840 INFO L226 Difference]: Without dead ends: 1413 [2020-10-27 05:27:13,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:27:13,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2020-10-27 05:27:14,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1410. [2020-10-27 05:27:14,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1410 states. [2020-10-27 05:27:14,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 2108 transitions. [2020-10-27 05:27:14,120 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 2108 transitions. Word has length 142 [2020-10-27 05:27:14,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:27:14,120 INFO L481 AbstractCegarLoop]: Abstraction has 1410 states and 2108 transitions. [2020-10-27 05:27:14,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:27:14,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 2108 transitions. [2020-10-27 05:27:14,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-27 05:27:14,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:27:14,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:27:14,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 05:27:14,126 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:27:14,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:27:14,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1000866454, now seen corresponding path program 1 times [2020-10-27 05:27:14,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:27:14,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396514178] [2020-10-27 05:27:14,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:27:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:14,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:14,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:14,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:14,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:14,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:14,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:14,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:14,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:15,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:15,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:19,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:19,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 05:27:19,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:27:19,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 05:27:19,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:19,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:27:19,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:27:19,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 05:27:19,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:27:19,615 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:27:19,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:27:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:19,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:19,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:19,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:27:19,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:27:19,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:27:19,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:19,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:27:19,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:27:19,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:27:19,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:27:19,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:27:19,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396514178] [2020-10-27 05:27:19,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:27:19,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:27:19,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924924788] [2020-10-27 05:27:19,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:27:19,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:27:19,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:27:19,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:27:19,681 INFO L87 Difference]: Start difference. First operand 1410 states and 2108 transitions. Second operand 9 states. [2020-10-27 05:27:20,176 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:27:23,160 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:27:23,569 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:27:23,930 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:27:24,323 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 05:27:24,775 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:27:25,305 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:27:25,704 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:27:26,069 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 05:27:26,457 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:27:26,900 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:27:26,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:27:26,967 INFO L93 Difference]: Finished difference Result 6135 states and 9387 transitions. [2020-10-27 05:27:26,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 05:27:26,967 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 142 [2020-10-27 05:27:26,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:27:26,980 INFO L225 Difference]: With dead ends: 6135 [2020-10-27 05:27:26,980 INFO L226 Difference]: Without dead ends: 4944 [2020-10-27 05:27:26,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=237, Invalid=575, Unknown=0, NotChecked=0, Total=812 [2020-10-27 05:27:26,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4944 states. [2020-10-27 05:27:27,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4944 to 1410. [2020-10-27 05:27:27,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1410 states. [2020-10-27 05:27:27,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 2096 transitions. [2020-10-27 05:27:27,290 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 2096 transitions. Word has length 142 [2020-10-27 05:27:27,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:27:27,290 INFO L481 AbstractCegarLoop]: Abstraction has 1410 states and 2096 transitions. [2020-10-27 05:27:27,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:27:27,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 2096 transitions. [2020-10-27 05:27:27,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-27 05:27:27,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:27:27,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:27:27,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 05:27:27,296 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:27:27,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:27:27,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1973242553, now seen corresponding path program 1 times [2020-10-27 05:27:27,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:27:27,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915885162] [2020-10-27 05:27:27,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:27:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:27,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:27,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:27,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:27,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:27,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:27,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:27,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:27,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:28,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:28,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:28,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:28,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:32,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:32,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 05:27:32,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:27:32,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 05:27:32,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:32,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:27:32,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 05:27:32,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 05:27:32,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:27:32,644 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:27:32,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:27:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:32,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:32,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:32,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:27:32,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:27:32,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 05:27:32,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:32,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:27:32,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:27:32,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:27:32,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:27:32,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:27:32,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915885162] [2020-10-27 05:27:32,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:27:32,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:27:32,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078919339] [2020-10-27 05:27:32,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:27:32,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:27:32,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:27:32,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:27:32,691 INFO L87 Difference]: Start difference. First operand 1410 states and 2096 transitions. Second operand 4 states. [2020-10-27 05:27:33,022 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 05:27:34,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:27:34,481 INFO L93 Difference]: Finished difference Result 3644 states and 5482 transitions. [2020-10-27 05:27:34,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:27:34,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-10-27 05:27:34,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:27:34,488 INFO L225 Difference]: With dead ends: 3644 [2020-10-27 05:27:34,489 INFO L226 Difference]: Without dead ends: 2301 [2020-10-27 05:27:34,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:27:34,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2301 states. [2020-10-27 05:27:34,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2301 to 2298. [2020-10-27 05:27:34,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2298 states. [2020-10-27 05:27:34,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 3446 transitions. [2020-10-27 05:27:34,905 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 3446 transitions. Word has length 143 [2020-10-27 05:27:34,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:27:34,905 INFO L481 AbstractCegarLoop]: Abstraction has 2298 states and 3446 transitions. [2020-10-27 05:27:34,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:27:34,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 3446 transitions. [2020-10-27 05:27:34,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 05:27:34,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:27:34,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:27:34,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 05:27:34,912 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:27:34,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:27:34,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1362079205, now seen corresponding path program 1 times [2020-10-27 05:27:34,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:27:34,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521276777] [2020-10-27 05:27:34,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:27:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:34,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:35,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:35,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:35,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:35,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:35,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:35,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:35,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:35,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:36,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:36,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:36,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:36,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:39,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:39,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 05:27:39,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:27:39,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 05:27:39,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:39,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:27:39,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:27:39,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 05:27:39,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:27:40,338 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:27:40,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:27:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:40,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:40,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:40,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:27:40,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:27:40,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:27:40,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:40,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:27:40,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:27:40,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:27:40,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:27:40,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:27:40,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521276777] [2020-10-27 05:27:40,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:27:40,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:27:40,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163108051] [2020-10-27 05:27:40,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:27:40,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:27:40,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:27:40,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:27:40,392 INFO L87 Difference]: Start difference. First operand 2298 states and 3446 transitions. Second operand 6 states. [2020-10-27 05:27:40,774 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:27:43,504 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 05:27:43,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:27:43,549 INFO L93 Difference]: Finished difference Result 6071 states and 9169 transitions. [2020-10-27 05:27:43,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:27:43,549 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2020-10-27 05:27:43,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:27:43,558 INFO L225 Difference]: With dead ends: 6071 [2020-10-27 05:27:43,559 INFO L226 Difference]: Without dead ends: 3836 [2020-10-27 05:27:43,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:27:43,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3836 states. [2020-10-27 05:27:44,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3836 to 3833. [2020-10-27 05:27:44,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3833 states. [2020-10-27 05:27:44,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 5769 transitions. [2020-10-27 05:27:44,350 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 5769 transitions. Word has length 144 [2020-10-27 05:27:44,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:27:44,350 INFO L481 AbstractCegarLoop]: Abstraction has 3833 states and 5769 transitions. [2020-10-27 05:27:44,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:27:44,350 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 5769 transitions. [2020-10-27 05:27:44,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 05:27:44,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:27:44,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:27:44,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 05:27:44,359 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:27:44,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:27:44,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1566069206, now seen corresponding path program 1 times [2020-10-27 05:27:44,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:27:44,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002894622] [2020-10-27 05:27:44,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:27:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:44,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:44,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:44,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:44,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:44,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:44,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:44,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:44,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:44,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:44,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:46,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:46,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:46,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:46,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:49,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:49,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 05:27:49,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:27:49,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 05:27:49,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:49,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:27:49,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:27:49,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 05:27:49,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:27:49,864 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:27:49,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:27:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:49,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:49,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:49,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:27:49,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:27:49,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 05:27:49,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:49,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:27:49,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:27:49,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:27:49,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:27:49,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:27:49,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002894622] [2020-10-27 05:27:49,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:27:49,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:27:49,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055320557] [2020-10-27 05:27:49,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:27:49,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:27:49,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:27:49,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:27:49,931 INFO L87 Difference]: Start difference. First operand 3833 states and 5769 transitions. Second operand 11 states. [2020-10-27 05:27:50,337 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:27:57,515 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 05:27:57,912 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:27:58,231 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 05:28:00,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:28:00,746 INFO L93 Difference]: Finished difference Result 29101 states and 44202 transitions. [2020-10-27 05:28:00,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 05:28:00,746 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 144 [2020-10-27 05:28:00,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:28:00,805 INFO L225 Difference]: With dead ends: 29101 [2020-10-27 05:28:00,805 INFO L226 Difference]: Without dead ends: 25979 [2020-10-27 05:28:00,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=354, Invalid=1368, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 05:28:00,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25979 states. [2020-10-27 05:28:02,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25979 to 4255. [2020-10-27 05:28:02,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4255 states. [2020-10-27 05:28:02,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4255 states to 4255 states and 6347 transitions. [2020-10-27 05:28:02,039 INFO L78 Accepts]: Start accepts. Automaton has 4255 states and 6347 transitions. Word has length 144 [2020-10-27 05:28:02,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:28:02,039 INFO L481 AbstractCegarLoop]: Abstraction has 4255 states and 6347 transitions. [2020-10-27 05:28:02,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:28:02,039 INFO L276 IsEmpty]: Start isEmpty. Operand 4255 states and 6347 transitions. [2020-10-27 05:28:02,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 05:28:02,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:28:02,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:28:02,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 05:28:02,049 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:28:02,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:28:02,050 INFO L82 PathProgramCache]: Analyzing trace with hash 833870340, now seen corresponding path program 1 times [2020-10-27 05:28:02,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:28:02,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462993514] [2020-10-27 05:28:02,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:28:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:02,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:02,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:02,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:02,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:02,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:02,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:02,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:02,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:03,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:03,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:07,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:07,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 05:28:07,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:28:07,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 05:28:07,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:07,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:28:07,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:28:07,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 05:28:07,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:07,330 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 25 [2020-10-27 05:28:07,711 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:28:07,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:28:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:07,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:07,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:07,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:28:07,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:28:07,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 05:28:07,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:07,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:28:07,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:28:07,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:28:07,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:07,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:28:07,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462993514] [2020-10-27 05:28:07,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:28:07,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:28:07,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892263861] [2020-10-27 05:28:07,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:28:07,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:28:07,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:28:07,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:28:07,830 INFO L87 Difference]: Start difference. First operand 4255 states and 6347 transitions. Second operand 10 states. [2020-10-27 05:28:08,216 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 05:28:14,863 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:28:15,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:28:15,827 INFO L93 Difference]: Finished difference Result 21428 states and 32557 transitions. [2020-10-27 05:28:15,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 05:28:15,828 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 144 [2020-10-27 05:28:15,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:28:15,856 INFO L225 Difference]: With dead ends: 21428 [2020-10-27 05:28:15,857 INFO L226 Difference]: Without dead ends: 18601 [2020-10-27 05:28:15,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2020-10-27 05:28:15,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18601 states. [2020-10-27 05:28:17,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18601 to 4311. [2020-10-27 05:28:17,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4311 states. [2020-10-27 05:28:17,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 6431 transitions. [2020-10-27 05:28:17,244 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 6431 transitions. Word has length 144 [2020-10-27 05:28:17,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:28:17,244 INFO L481 AbstractCegarLoop]: Abstraction has 4311 states and 6431 transitions. [2020-10-27 05:28:17,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:28:17,244 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 6431 transitions. [2020-10-27 05:28:17,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-27 05:28:17,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:28:17,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:28:17,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 05:28:17,251 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:28:17,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:28:17,252 INFO L82 PathProgramCache]: Analyzing trace with hash 699592835, now seen corresponding path program 1 times [2020-10-27 05:28:17,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:28:17,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469113657] [2020-10-27 05:28:17,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:28:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:17,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:17,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:17,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:17,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:17,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:17,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:17,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:17,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:17,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:17,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:18,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:22,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:22,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 05:28:22,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:28:22,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 05:28:22,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:22,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:28:22,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 05:28:22,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 05:28:22,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:22,612 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:28:22,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:28:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:22,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:22,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:22,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:28:22,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:28:22,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 05:28:22,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:22,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:28:22,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:28:22,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:28:22,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:22,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:28:22,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469113657] [2020-10-27 05:28:22,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:28:22,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:28:22,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500308670] [2020-10-27 05:28:22,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:28:22,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:28:22,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:28:22,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:28:22,655 INFO L87 Difference]: Start difference. First operand 4311 states and 6431 transitions. Second operand 4 states. [2020-10-27 05:28:22,996 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 05:28:25,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:28:25,596 INFO L93 Difference]: Finished difference Result 10041 states and 15199 transitions. [2020-10-27 05:28:25,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:28:25,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-10-27 05:28:25,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:28:25,606 INFO L225 Difference]: With dead ends: 10041 [2020-10-27 05:28:25,607 INFO L226 Difference]: Without dead ends: 6447 [2020-10-27 05:28:25,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:28:25,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6447 states. [2020-10-27 05:28:27,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6447 to 6444. [2020-10-27 05:28:27,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6444 states. [2020-10-27 05:28:27,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6444 states to 6444 states and 9744 transitions. [2020-10-27 05:28:27,547 INFO L78 Accepts]: Start accepts. Automaton has 6444 states and 9744 transitions. Word has length 145 [2020-10-27 05:28:27,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:28:27,547 INFO L481 AbstractCegarLoop]: Abstraction has 6444 states and 9744 transitions. [2020-10-27 05:28:27,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:28:27,548 INFO L276 IsEmpty]: Start isEmpty. Operand 6444 states and 9744 transitions. [2020-10-27 05:28:27,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 05:28:27,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:28:27,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:28:27,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 05:28:27,556 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:28:27,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:28:27,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1661070181, now seen corresponding path program 1 times [2020-10-27 05:28:27,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:28:27,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211593815] [2020-10-27 05:28:27,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:28:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:27,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:27,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:27,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:27,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:27,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:27,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:27,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:27,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:28,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:28,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:28,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:28,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:29,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:29,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:29,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:29,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:31,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:31,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:32,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:32,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 05:28:32,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 05:28:32,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 05:28:32,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:32,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:28:32,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:28:32,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 05:28:32,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:33,035 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:28:33,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:28:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:33,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:33,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:33,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:28:33,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:28:33,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:28:33,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:33,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:28:33,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:28:33,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:28:33,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:33,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:28:33,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211593815] [2020-10-27 05:28:33,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:28:33,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:28:33,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599057874] [2020-10-27 05:28:33,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:28:33,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:28:33,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:28:33,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:28:33,094 INFO L87 Difference]: Start difference. First operand 6444 states and 9744 transitions. Second operand 9 states. [2020-10-27 05:28:33,436 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 05:28:42,046 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 05:28:42,499 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:28:42,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:28:42,778 INFO L93 Difference]: Finished difference Result 30738 states and 46810 transitions. [2020-10-27 05:28:42,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 05:28:42,778 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 146 [2020-10-27 05:28:42,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:28:42,809 INFO L225 Difference]: With dead ends: 30738 [2020-10-27 05:28:42,809 INFO L226 Difference]: Without dead ends: 25145 [2020-10-27 05:28:42,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2020-10-27 05:28:42,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25145 states. [2020-10-27 05:28:44,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25145 to 7078. [2020-10-27 05:28:44,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7078 states. [2020-10-27 05:28:44,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7078 states to 7078 states and 10632 transitions. [2020-10-27 05:28:44,888 INFO L78 Accepts]: Start accepts. Automaton has 7078 states and 10632 transitions. Word has length 146 [2020-10-27 05:28:44,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:28:44,888 INFO L481 AbstractCegarLoop]: Abstraction has 7078 states and 10632 transitions. [2020-10-27 05:28:44,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:28:44,889 INFO L276 IsEmpty]: Start isEmpty. Operand 7078 states and 10632 transitions. [2020-10-27 05:28:44,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 05:28:44,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:28:44,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:28:44,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 05:28:44,898 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:28:44,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:28:44,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1716701529, now seen corresponding path program 1 times [2020-10-27 05:28:44,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:28:44,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777644590] [2020-10-27 05:28:44,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:28:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:44,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:44,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:44,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:45,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:45,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:45,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:45,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:45,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:45,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:45,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:45,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:46,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:49,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:49,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 05:28:49,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:28:49,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 05:28:49,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:49,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:28:49,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:28:49,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 05:28:49,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:50,323 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:28:50,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:28:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:50,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:50,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:50,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:28:50,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:28:50,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:28:50,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:50,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:28:50,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:28:50,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:28:50,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:50,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:28:50,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777644590] [2020-10-27 05:28:50,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:28:50,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:28:50,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004397821] [2020-10-27 05:28:50,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:28:50,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:28:50,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:28:50,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:28:50,395 INFO L87 Difference]: Start difference. First operand 7078 states and 10632 transitions. Second operand 6 states. [2020-10-27 05:28:50,798 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 05:28:55,517 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:28:55,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:28:55,860 INFO L93 Difference]: Finished difference Result 17895 states and 27147 transitions. [2020-10-27 05:28:55,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:28:55,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-10-27 05:28:55,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:28:55,874 INFO L225 Difference]: With dead ends: 17895 [2020-10-27 05:28:55,874 INFO L226 Difference]: Without dead ends: 11502 [2020-10-27 05:28:55,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:28:55,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11502 states.