/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_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:55:27,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:55:27,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:55:27,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:55:27,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:55:27,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:55:27,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:55:27,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:55:27,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:55:27,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:55:27,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:55:27,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:55:27,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:55:27,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:55:27,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:55:27,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:55:27,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:55:27,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:55:27,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:55:27,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:55:27,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:55:27,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:55:27,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:55:27,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:55:27,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:55:27,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:55:27,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:55:27,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:55:27,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:55:27,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:55:27,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:55:27,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:55:27,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:55:27,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:55:27,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:55:27,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:55:27,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:55:27,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:55:27,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:55:27,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:55:27,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:55:27,609 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 04:55:27,636 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:55:27,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:55:27,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:55:27,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:55:27,638 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:55:27,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:55:27,639 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:55:27,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:55:27,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:55:27,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:55:27,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:55:27,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:55:27,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:55:27,641 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:55:27,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:55:27,641 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:55:27,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:55:27,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:55:27,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:55:27,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:55:27,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:55:27,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:55:27,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:55:27,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:55:27,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:55:27,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:55:27,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:55:27,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:55:27,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:55:27,644 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:55:28,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:55:28,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:55:28,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:55:28,055 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:55:28,056 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:55:28,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-27 04:55:28,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1caa48afb/e2384c5ad76e4cd691e029fd9a19e31f/FLAGcddbe842b [2020-10-27 04:55:28,954 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:55:28,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-27 04:55:28,981 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1caa48afb/e2384c5ad76e4cd691e029fd9a19e31f/FLAGcddbe842b [2020-10-27 04:55:29,249 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1caa48afb/e2384c5ad76e4cd691e029fd9a19e31f [2020-10-27 04:55:29,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:55:29,261 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:55:29,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:55:29,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:55:29,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:55:29,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:55:29" (1/1) ... [2020-10-27 04:55:29,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e103ae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:55:29, skipping insertion in model container [2020-10-27 04:55:29,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:55:29" (1/1) ... [2020-10-27 04:55:29,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:55:29,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:55:29,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:55:29,862 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:55:30,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:55:30,163 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:55:30,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:55:30 WrapperNode [2020-10-27 04:55:30,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:55:30,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:55:30,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:55:30,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:55:30,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:55:30" (1/1) ... [2020-10-27 04:55:30,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:55:30" (1/1) ... [2020-10-27 04:55:30,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:55:30" (1/1) ... [2020-10-27 04:55:30,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:55:30" (1/1) ... [2020-10-27 04:55:30,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:55:30" (1/1) ... [2020-10-27 04:55:30,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:55:30" (1/1) ... [2020-10-27 04:55:30,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:55:30" (1/1) ... [2020-10-27 04:55:30,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:55:30,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:55:30,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:55:30,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:55:30,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:55:30" (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 04:55:30,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:55:30,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:55:30,425 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:55:30,425 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:55:30,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:55:30,425 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:55:30,425 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:55:30,426 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:55:30,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:55:30,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:55:30,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:55:30,426 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:55:30,426 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:55:30,427 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:55:30,427 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:55:30,427 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:55:30,427 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:55:30,427 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:55:30,427 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:55:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:55:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:55:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:55:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:55:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:55:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:55:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:55:30,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:55:31,937 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:55:31,938 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 04:55:31,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:55:31 BoogieIcfgContainer [2020-10-27 04:55:31,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:55:31,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:55:31,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:55:31,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:55:31,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:55:29" (1/3) ... [2020-10-27 04:55:31,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18fdb8db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:55:31, skipping insertion in model container [2020-10-27 04:55:31,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:55:30" (2/3) ... [2020-10-27 04:55:31,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18fdb8db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:55:31, skipping insertion in model container [2020-10-27 04:55:31,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:55:31" (3/3) ... [2020-10-27 04:55:31,950 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-27 04:55:31,963 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:55:31,969 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:55:31,982 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:55:32,013 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:55:32,013 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:55:32,013 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:55:32,014 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:55:32,014 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:55:32,014 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:55:32,014 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:55:32,014 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:55:32,039 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states. [2020-10-27 04:55:32,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 04:55:32,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:32,056 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 04:55:32,056 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:32,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:32,063 INFO L82 PathProgramCache]: Analyzing trace with hash -834370694, now seen corresponding path program 1 times [2020-10-27 04:55:32,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:32,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41777186] [2020-10-27 04:55:32,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:32,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:33,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:33,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:33,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:33,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:33,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:33,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:34,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:34,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:35,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:35,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:35,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:37,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:37,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:37,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 04:55:37,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 04:55:37,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-27 04:55:37,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:37,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:55:37,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:55:37,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:55:37,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-27 04:55:38,054 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:55:38,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:38,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:38,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:38,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:38,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:38,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:38,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 04:55:38,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:38,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:55:38,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:38,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:55:38,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:38,191 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 04:55:38,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41777186] [2020-10-27 04:55:38,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:38,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:55:38,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60720320] [2020-10-27 04:55:38,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:55:38,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:38,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:55:38,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:55:38,231 INFO L87 Difference]: Start difference. First operand 303 states. Second operand 5 states. [2020-10-27 04:55:41,391 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 04:55:42,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:42,394 INFO L93 Difference]: Finished difference Result 845 states and 1503 transitions. [2020-10-27 04:55:42,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:55:42,396 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-27 04:55:42,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:42,424 INFO L225 Difference]: With dead ends: 845 [2020-10-27 04:55:42,425 INFO L226 Difference]: Without dead ends: 559 [2020-10-27 04:55:42,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:55:42,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-27 04:55:42,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 556. [2020-10-27 04:55:42,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-10-27 04:55:42,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 801 transitions. [2020-10-27 04:55:42,540 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 801 transitions. Word has length 146 [2020-10-27 04:55:42,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:42,541 INFO L481 AbstractCegarLoop]: Abstraction has 556 states and 801 transitions. [2020-10-27 04:55:42,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:55:42,541 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 801 transitions. [2020-10-27 04:55:42,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 04:55:42,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:42,553 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, 1] [2020-10-27 04:55:42,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:55:42,555 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:42,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:42,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1981205259, now seen corresponding path program 1 times [2020-10-27 04:55:42,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:42,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724183958] [2020-10-27 04:55:42,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:42,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:42,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:42,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:42,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:43,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:43,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:43,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:43,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:43,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:43,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:44,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:44,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:47,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:47,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 04:55:47,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 04:55:47,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 04:55:47,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:47,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:55:47,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:55:47,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 04:55:47,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:48,040 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:55:48,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:48,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:48,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:48,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:48,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:48,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:55:48,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:48,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:55:48,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:48,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:55:48,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:48,144 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 04:55:48,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724183958] [2020-10-27 04:55:48,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:48,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:55:48,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498326294] [2020-10-27 04:55:48,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:55:48,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:48,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:55:48,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:55:48,164 INFO L87 Difference]: Start difference. First operand 556 states and 801 transitions. Second operand 5 states. [2020-10-27 04:55:50,333 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 04:55:51,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:51,343 INFO L93 Difference]: Finished difference Result 1591 states and 2281 transitions. [2020-10-27 04:55:51,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:55:51,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-27 04:55:51,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:51,352 INFO L225 Difference]: With dead ends: 1591 [2020-10-27 04:55:51,352 INFO L226 Difference]: Without dead ends: 1067 [2020-10-27 04:55:51,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:55:51,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2020-10-27 04:55:51,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1064. [2020-10-27 04:55:51,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2020-10-27 04:55:51,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1513 transitions. [2020-10-27 04:55:51,439 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1513 transitions. Word has length 147 [2020-10-27 04:55:51,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:51,440 INFO L481 AbstractCegarLoop]: Abstraction has 1064 states and 1513 transitions. [2020-10-27 04:55:51,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:55:51,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1513 transitions. [2020-10-27 04:55:51,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-27 04:55:51,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:51,447 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, 1, 1] [2020-10-27 04:55:51,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:55:51,447 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:51,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:51,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1194580131, now seen corresponding path program 1 times [2020-10-27 04:55:51,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:51,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861751254] [2020-10-27 04:55:51,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:51,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:51,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:51,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:51,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:51,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:51,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:52,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:52,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:53,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:56,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:56,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-27 04:55:56,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 04:55:56,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 04:55:56,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:56,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:55:56,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:55:56,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 04:55:56,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:56,975 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:55:56,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:56,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:57,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:57,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:57,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:57,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:55:57,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:57,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:55:57,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:57,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:55:57,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:55:57,133 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 04:55:57,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861751254] [2020-10-27 04:55:57,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:57,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:55:57,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815586897] [2020-10-27 04:55:57,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:55:57,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:57,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:55:57,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:55:57,137 INFO L87 Difference]: Start difference. First operand 1064 states and 1513 transitions. Second operand 5 states. [2020-10-27 04:55:59,217 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 04:56:00,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:56:00,211 INFO L93 Difference]: Finished difference Result 3046 states and 4304 transitions. [2020-10-27 04:56:00,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:56:00,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-27 04:56:00,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:56:00,224 INFO L225 Difference]: With dead ends: 3046 [2020-10-27 04:56:00,225 INFO L226 Difference]: Without dead ends: 2029 [2020-10-27 04:56:00,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:56:00,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2020-10-27 04:56:00,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 2026. [2020-10-27 04:56:00,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2026 states. [2020-10-27 04:56:00,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2026 states to 2026 states and 2835 transitions. [2020-10-27 04:56:00,364 INFO L78 Accepts]: Start accepts. Automaton has 2026 states and 2835 transitions. Word has length 148 [2020-10-27 04:56:00,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:56:00,364 INFO L481 AbstractCegarLoop]: Abstraction has 2026 states and 2835 transitions. [2020-10-27 04:56:00,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:56:00,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2026 states and 2835 transitions. [2020-10-27 04:56:00,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 04:56:00,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:56:00,369 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, 1, 1, 1] [2020-10-27 04:56:00,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:56:00,370 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:56:00,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:56:00,371 INFO L82 PathProgramCache]: Analyzing trace with hash 197811372, now seen corresponding path program 1 times [2020-10-27 04:56:00,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:56:00,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852719449] [2020-10-27 04:56:00,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:56:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:00,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:00,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:00,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:00,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:00,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:00,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:00,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:00,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:02,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:05,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:05,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:05,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:05,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-27 04:56:05,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 04:56:05,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 04:56:05,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:05,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:56:05,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:56:05,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:56:05,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:56:05,939 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:56:05,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:56:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:05,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:05,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:05,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:56:05,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:05,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:56:05,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:05,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:56:05,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:56:05,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:56:05,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:06,030 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 04:56:06,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852719449] [2020-10-27 04:56:06,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:56:06,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:56:06,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594502670] [2020-10-27 04:56:06,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:56:06,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:56:06,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:56:06,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:56:06,033 INFO L87 Difference]: Start difference. First operand 2026 states and 2835 transitions. Second operand 5 states. [2020-10-27 04:56:08,478 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 04:56:09,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:56:09,633 INFO L93 Difference]: Finished difference Result 5408 states and 7616 transitions. [2020-10-27 04:56:09,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:56:09,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-27 04:56:09,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:56:09,656 INFO L225 Difference]: With dead ends: 5408 [2020-10-27 04:56:09,656 INFO L226 Difference]: Without dead ends: 3897 [2020-10-27 04:56:09,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:56:09,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3897 states. [2020-10-27 04:56:09,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3897 to 3894. [2020-10-27 04:56:09,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3894 states. [2020-10-27 04:56:09,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3894 states to 3894 states and 5376 transitions. [2020-10-27 04:56:09,927 INFO L78 Accepts]: Start accepts. Automaton has 3894 states and 5376 transitions. Word has length 149 [2020-10-27 04:56:09,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:56:09,930 INFO L481 AbstractCegarLoop]: Abstraction has 3894 states and 5376 transitions. [2020-10-27 04:56:09,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:56:09,930 INFO L276 IsEmpty]: Start isEmpty. Operand 3894 states and 5376 transitions. [2020-10-27 04:56:09,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-27 04:56:09,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:56:09,938 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, 1, 1, 1, 1] [2020-10-27 04:56:09,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:56:09,939 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:56:09,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:56:09,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1700588996, now seen corresponding path program 1 times [2020-10-27 04:56:09,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:56:09,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316809114] [2020-10-27 04:56:09,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:56:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:10,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:10,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:10,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:10,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:10,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:10,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:13,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:13,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:13,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:14,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:14,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 04:56:14,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 04:56:14,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:56:14,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:14,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:56:14,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:56:14,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:56:14,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:15,455 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:56:15,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:56:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:15,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:15,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:15,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:56:15,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:15,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:56:15,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:15,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:56:15,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:56:15,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:56:15,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:15,538 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 04:56:15,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316809114] [2020-10-27 04:56:15,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:56:15,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:56:15,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797753867] [2020-10-27 04:56:15,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:56:15,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:56:15,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:56:15,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:56:15,541 INFO L87 Difference]: Start difference. First operand 3894 states and 5376 transitions. Second operand 5 states. [2020-10-27 04:56:17,949 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 04:56:19,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:56:19,076 INFO L93 Difference]: Finished difference Result 11415 states and 15704 transitions. [2020-10-27 04:56:19,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:56:19,077 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-27 04:56:19,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:56:19,115 INFO L225 Difference]: With dead ends: 11415 [2020-10-27 04:56:19,115 INFO L226 Difference]: Without dead ends: 7534 [2020-10-27 04:56:19,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:56:19,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7534 states. [2020-10-27 04:56:19,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7534 to 7531. [2020-10-27 04:56:19,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7531 states. [2020-10-27 04:56:19,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7531 states to 7531 states and 10256 transitions. [2020-10-27 04:56:19,659 INFO L78 Accepts]: Start accepts. Automaton has 7531 states and 10256 transitions. Word has length 150 [2020-10-27 04:56:19,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:56:19,659 INFO L481 AbstractCegarLoop]: Abstraction has 7531 states and 10256 transitions. [2020-10-27 04:56:19,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:56:19,659 INFO L276 IsEmpty]: Start isEmpty. Operand 7531 states and 10256 transitions. [2020-10-27 04:56:19,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-27 04:56:19,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:56:19,673 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, 1, 1, 1, 1, 1] [2020-10-27 04:56:19,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:56:19,674 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:56:19,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:56:19,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1691193100, now seen corresponding path program 1 times [2020-10-27 04:56:19,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:56:19,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560831492] [2020-10-27 04:56:19,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:56:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:19,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:19,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:19,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:19,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:19,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:19,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:19,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:22,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:24,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:24,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 04:56:24,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:56:24,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 04:56:24,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:24,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:56:24,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:56:24,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:56:24,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:25,276 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:56:25,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:56:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:25,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:25,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:25,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:56:25,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:25,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:56:25,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:25,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:56:25,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:56:25,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:56:25,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:25,362 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 04:56:25,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560831492] [2020-10-27 04:56:25,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:56:25,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:56:25,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710873204] [2020-10-27 04:56:25,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:56:25,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:56:25,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:56:25,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:56:25,366 INFO L87 Difference]: Start difference. First operand 7531 states and 10256 transitions. Second operand 5 states. [2020-10-27 04:56:28,226 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 04:56:29,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:56:29,571 INFO L93 Difference]: Finished difference Result 21074 states and 28828 transitions. [2020-10-27 04:56:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:56:29,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-27 04:56:29,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:56:29,632 INFO L225 Difference]: With dead ends: 21074 [2020-10-27 04:56:29,632 INFO L226 Difference]: Without dead ends: 14647 [2020-10-27 04:56:29,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:56:29,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14647 states. [2020-10-27 04:56:30,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14647 to 14644. [2020-10-27 04:56:30,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14644 states. [2020-10-27 04:56:30,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14644 states to 14644 states and 19680 transitions. [2020-10-27 04:56:30,859 INFO L78 Accepts]: Start accepts. Automaton has 14644 states and 19680 transitions. Word has length 151 [2020-10-27 04:56:30,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:56:30,860 INFO L481 AbstractCegarLoop]: Abstraction has 14644 states and 19680 transitions. [2020-10-27 04:56:30,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:56:30,860 INFO L276 IsEmpty]: Start isEmpty. Operand 14644 states and 19680 transitions. [2020-10-27 04:56:30,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 04:56:30,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:56:30,888 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, 1, 1, 1, 1, 1, 1] [2020-10-27 04:56:30,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:56:30,888 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:56:30,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:56:30,889 INFO L82 PathProgramCache]: Analyzing trace with hash 769616413, now seen corresponding path program 1 times [2020-10-27 04:56:30,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:56:30,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334946335] [2020-10-27 04:56:30,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:56:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:30,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:31,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:31,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:31,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:31,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:31,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:31,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:35,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:35,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 04:56:35,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:56:35,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:56:35,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:35,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:56:35,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 04:56:35,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 04:56:35,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:36,365 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:56:36,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:56:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:36,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:36,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:36,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:56:36,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:36,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:56:36,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:36,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:56:36,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:56:36,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:56:36,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:36,444 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 04:56:36,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334946335] [2020-10-27 04:56:36,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:56:36,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:56:36,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308825370] [2020-10-27 04:56:36,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:56:36,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:56:36,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:56:36,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:56:36,452 INFO L87 Difference]: Start difference. First operand 14644 states and 19680 transitions. Second operand 5 states. [2020-10-27 04:56:38,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:56:38,544 INFO L93 Difference]: Finished difference Result 23727 states and 31899 transitions. [2020-10-27 04:56:38,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:56:38,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-27 04:56:38,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:56:38,564 INFO L225 Difference]: With dead ends: 23727 [2020-10-27 04:56:38,564 INFO L226 Difference]: Without dead ends: 9385 [2020-10-27 04:56:38,590 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 04:56:38,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9385 states. [2020-10-27 04:56:39,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9385 to 9385. [2020-10-27 04:56:39,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9385 states. [2020-10-27 04:56:39,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9385 states to 9385 states and 12562 transitions. [2020-10-27 04:56:39,108 INFO L78 Accepts]: Start accepts. Automaton has 9385 states and 12562 transitions. Word has length 152 [2020-10-27 04:56:39,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:56:39,109 INFO L481 AbstractCegarLoop]: Abstraction has 9385 states and 12562 transitions. [2020-10-27 04:56:39,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:56:39,109 INFO L276 IsEmpty]: Start isEmpty. Operand 9385 states and 12562 transitions. [2020-10-27 04:56:39,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-27 04:56:39,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:56:39,126 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:56:39,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:56:39,127 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:56:39,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:56:39,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1420288643, now seen corresponding path program 1 times [2020-10-27 04:56:39,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:56:39,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409731588] [2020-10-27 04:56:39,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:56:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:39,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:39,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:39,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:39,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:39,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:39,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:39,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:39,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:40,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:44,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:44,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 04:56:44,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 04:56:44,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 04:56:44,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:56:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:56:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 04:56:44,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:44,575 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:56:44,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:56:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:44,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:44,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:44,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:56:44,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:44,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 04:56:44,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:44,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:56:44,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:56:44,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:56:44,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:44,668 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 04:56:44,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409731588] [2020-10-27 04:56:44,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:56:44,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:56:44,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081045156] [2020-10-27 04:56:44,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:56:44,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:56:44,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:56:44,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:56:44,671 INFO L87 Difference]: Start difference. First operand 9385 states and 12562 transitions. Second operand 6 states. [2020-10-27 04:56:45,112 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 04:56:47,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:56:47,390 INFO L93 Difference]: Finished difference Result 17136 states and 23308 transitions. [2020-10-27 04:56:47,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:56:47,391 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2020-10-27 04:56:47,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:56:47,413 INFO L225 Difference]: With dead ends: 17136 [2020-10-27 04:56:47,413 INFO L226 Difference]: Without dead ends: 9385 [2020-10-27 04:56:47,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:56:47,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9385 states. [2020-10-27 04:56:48,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9385 to 9385. [2020-10-27 04:56:48,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9385 states. [2020-10-27 04:56:48,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9385 states to 9385 states and 12450 transitions. [2020-10-27 04:56:48,025 INFO L78 Accepts]: Start accepts. Automaton has 9385 states and 12450 transitions. Word has length 156 [2020-10-27 04:56:48,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:56:48,025 INFO L481 AbstractCegarLoop]: Abstraction has 9385 states and 12450 transitions. [2020-10-27 04:56:48,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:56:48,025 INFO L276 IsEmpty]: Start isEmpty. Operand 9385 states and 12450 transitions. [2020-10-27 04:56:48,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-27 04:56:48,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:56:48,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:56:48,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:56:48,040 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:56:48,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:56:48,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1973234504, now seen corresponding path program 1 times [2020-10-27 04:56:48,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:56:48,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613847984] [2020-10-27 04:56:48,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:56:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:48,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:48,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:48,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:48,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:48,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:48,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:52,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:52,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:53,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:53,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 04:56:53,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:56:53,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 04:56:53,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:56:53,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:56:53,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:56:53,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:53,511 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:56:53,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:56:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:53,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:53,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:53,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:56:53,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:53,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:56:53,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:53,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:56:53,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:56:53,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:56:53,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:53,590 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 04:56:53,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613847984] [2020-10-27 04:56:53,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:56:53,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:56:53,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507636469] [2020-10-27 04:56:53,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:56:53,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:56:53,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:56:53,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:56:53,592 INFO L87 Difference]: Start difference. First operand 9385 states and 12450 transitions. Second operand 5 states. [2020-10-27 04:56:54,049 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 04:56:57,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:56:57,216 INFO L93 Difference]: Finished difference Result 16522 states and 21995 transitions. [2020-10-27 04:56:57,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:56:57,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-27 04:56:57,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:56:57,237 INFO L225 Difference]: With dead ends: 16522 [2020-10-27 04:56:57,237 INFO L226 Difference]: Without dead ends: 9388 [2020-10-27 04:56:57,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:56:57,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9388 states. [2020-10-27 04:56:58,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9388 to 9385. [2020-10-27 04:56:58,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9385 states. [2020-10-27 04:56:58,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9385 states to 9385 states and 12409 transitions. [2020-10-27 04:56:58,032 INFO L78 Accepts]: Start accepts. Automaton has 9385 states and 12409 transitions. Word has length 156 [2020-10-27 04:56:58,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:56:58,033 INFO L481 AbstractCegarLoop]: Abstraction has 9385 states and 12409 transitions. [2020-10-27 04:56:58,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:56:58,033 INFO L276 IsEmpty]: Start isEmpty. Operand 9385 states and 12409 transitions. [2020-10-27 04:56:58,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 04:56:58,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:56:58,047 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:56:58,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:56:58,048 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:56:58,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:56:58,048 INFO L82 PathProgramCache]: Analyzing trace with hash 733325193, now seen corresponding path program 1 times [2020-10-27 04:56:58,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:56:58,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023079195] [2020-10-27 04:56:58,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:56:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:58,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:58,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:58,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:58,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:58,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:58,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:03,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:03,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 04:57:03,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:57:03,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:57:03,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:03,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:57:03,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:57:03,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 04:57:03,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:03,487 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:57:03,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:03,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:03,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:03,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:03,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:03,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:57:03,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:03,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:57:03,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:03,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:57:03,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:03,529 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 04:57:03,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023079195] [2020-10-27 04:57:03,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:03,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:57:03,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108837467] [2020-10-27 04:57:03,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:57:03,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:03,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:57:03,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:57:03,531 INFO L87 Difference]: Start difference. First operand 9385 states and 12409 transitions. Second operand 5 states. [2020-10-27 04:57:05,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:57:05,416 INFO L93 Difference]: Finished difference Result 14739 states and 19570 transitions. [2020-10-27 04:57:05,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:57:05,417 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-27 04:57:05,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:57:05,430 INFO L225 Difference]: With dead ends: 14739 [2020-10-27 04:57:05,431 INFO L226 Difference]: Without dead ends: 7625 [2020-10-27 04:57:05,442 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 04:57:05,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7625 states. [2020-10-27 04:57:06,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7625 to 7625. [2020-10-27 04:57:06,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7625 states. [2020-10-27 04:57:06,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7625 states to 7625 states and 10050 transitions. [2020-10-27 04:57:06,012 INFO L78 Accepts]: Start accepts. Automaton has 7625 states and 10050 transitions. Word has length 157 [2020-10-27 04:57:06,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:57:06,012 INFO L481 AbstractCegarLoop]: Abstraction has 7625 states and 10050 transitions. [2020-10-27 04:57:06,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:57:06,012 INFO L276 IsEmpty]: Start isEmpty. Operand 7625 states and 10050 transitions. [2020-10-27 04:57:06,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-27 04:57:06,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:06,020 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:57:06,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:57:06,020 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:06,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:06,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1836036278, now seen corresponding path program 1 times [2020-10-27 04:57:06,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:06,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972874422] [2020-10-27 04:57:06,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:06,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:06,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:06,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:06,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:06,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:11,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:11,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 04:57:11,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:57:11,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 04:57:11,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:11,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:57:11,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 04:57:11,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:57:11,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:11,508 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:57:11,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:11,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:11,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:11,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:11,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:11,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:57:11,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:11,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:57:11,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:11,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:57:11,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:11,550 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 04:57:11,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972874422] [2020-10-27 04:57:11,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:11,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:57:11,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395555665] [2020-10-27 04:57:11,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:57:11,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:11,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:57:11,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:57:11,553 INFO L87 Difference]: Start difference. First operand 7625 states and 10050 transitions. Second operand 5 states. [2020-10-27 04:57:13,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:57:13,283 INFO L93 Difference]: Finished difference Result 12714 states and 16732 transitions. [2020-10-27 04:57:13,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:57:13,284 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-27 04:57:13,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:57:13,291 INFO L225 Difference]: With dead ends: 12714 [2020-10-27 04:57:13,291 INFO L226 Difference]: Without dead ends: 5149 [2020-10-27 04:57:13,304 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 04:57:13,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5149 states. [2020-10-27 04:57:13,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5149 to 5149. [2020-10-27 04:57:13,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5149 states. [2020-10-27 04:57:13,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 6760 transitions. [2020-10-27 04:57:13,746 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 6760 transitions. Word has length 160 [2020-10-27 04:57:13,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:57:13,746 INFO L481 AbstractCegarLoop]: Abstraction has 5149 states and 6760 transitions. [2020-10-27 04:57:13,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:57:13,746 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 6760 transitions. [2020-10-27 04:57:13,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-27 04:57:13,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:13,755 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:57:13,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:57:13,755 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:13,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:13,756 INFO L82 PathProgramCache]: Analyzing trace with hash 95233042, now seen corresponding path program 1 times [2020-10-27 04:57:13,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:13,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300296650] [2020-10-27 04:57:13,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:13,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:13,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:13,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:13,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:13,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:14,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:14,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:14,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:14,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:15,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:15,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:18,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:18,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-27 04:57:18,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 04:57:18,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 04:57:18,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:18,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:57:18,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:57:18,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 04:57:18,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:19,356 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:57:19,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:19,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:19,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:19,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:19,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:19,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:57:19,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:19,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:57:19,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:19,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:57:19,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:19,444 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 04:57:19,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300296650] [2020-10-27 04:57:19,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:19,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:57:19,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221523328] [2020-10-27 04:57:19,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:57:19,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:19,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:57:19,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:57:19,447 INFO L87 Difference]: Start difference. First operand 5149 states and 6760 transitions. Second operand 12 states. [2020-10-27 04:57:19,930 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-27 04:57:23,454 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 04:57:23,861 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 04:57:25,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:57:25,684 INFO L93 Difference]: Finished difference Result 17564 states and 23971 transitions. [2020-10-27 04:57:25,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:57:25,685 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 167 [2020-10-27 04:57:25,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:57:25,709 INFO L225 Difference]: With dead ends: 17564 [2020-10-27 04:57:25,709 INFO L226 Difference]: Without dead ends: 15051 [2020-10-27 04:57:25,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2020-10-27 04:57:25,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15051 states. [2020-10-27 04:57:26,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15051 to 5931. [2020-10-27 04:57:26,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5931 states. [2020-10-27 04:57:26,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5931 states to 5931 states and 7704 transitions. [2020-10-27 04:57:26,310 INFO L78 Accepts]: Start accepts. Automaton has 5931 states and 7704 transitions. Word has length 167 [2020-10-27 04:57:26,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:57:26,310 INFO L481 AbstractCegarLoop]: Abstraction has 5931 states and 7704 transitions. [2020-10-27 04:57:26,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:57:26,310 INFO L276 IsEmpty]: Start isEmpty. Operand 5931 states and 7704 transitions. [2020-10-27 04:57:26,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-27 04:57:26,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:26,317 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:57:26,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:57:26,317 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:26,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:26,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1900852416, now seen corresponding path program 1 times [2020-10-27 04:57:26,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:26,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367984149] [2020-10-27 04:57:26,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:26,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:26,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:26,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:26,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:26,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:26,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:26,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:26,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:29,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:30,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:30,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:31,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:31,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-27 04:57:31,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 04:57:31,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:57:31,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:31,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:57:31,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:57:31,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 04:57:31,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:31,897 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:57:31,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:31,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:31,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:31,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:31,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:31,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:57:31,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:31,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:57:31,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:31,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:57:31,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:31,986 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 04:57:31,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367984149] [2020-10-27 04:57:31,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:31,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:57:31,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975245707] [2020-10-27 04:57:31,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:57:31,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:31,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:57:31,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:57:31,988 INFO L87 Difference]: Start difference. First operand 5931 states and 7704 transitions. Second operand 11 states. [2020-10-27 04:57:32,456 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 04:57:35,226 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 04:57:37,261 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-27 04:57:37,943 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 04:57:38,574 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 04:57:39,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:57:39,703 INFO L93 Difference]: Finished difference Result 21337 states and 30157 transitions. [2020-10-27 04:57:39,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 04:57:39,704 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 167 [2020-10-27 04:57:39,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:57:39,738 INFO L225 Difference]: With dead ends: 21337 [2020-10-27 04:57:39,738 INFO L226 Difference]: Without dead ends: 17908 [2020-10-27 04:57:39,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=277, Invalid=715, Unknown=0, NotChecked=0, Total=992 [2020-10-27 04:57:39,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17908 states. [2020-10-27 04:57:40,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17908 to 7210. [2020-10-27 04:57:40,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7210 states. [2020-10-27 04:57:40,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7210 states to 7210 states and 9389 transitions. [2020-10-27 04:57:40,544 INFO L78 Accepts]: Start accepts. Automaton has 7210 states and 9389 transitions. Word has length 167 [2020-10-27 04:57:40,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:57:40,544 INFO L481 AbstractCegarLoop]: Abstraction has 7210 states and 9389 transitions. [2020-10-27 04:57:40,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:57:40,545 INFO L276 IsEmpty]: Start isEmpty. Operand 7210 states and 9389 transitions. [2020-10-27 04:57:40,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-27 04:57:40,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:40,552 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:57:40,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:57:40,552 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:40,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:40,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1598335308, now seen corresponding path program 1 times [2020-10-27 04:57:40,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:40,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613395172] [2020-10-27 04:57:40,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:40,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:40,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:40,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:40,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:40,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:40,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:40,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:41,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:45,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:45,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-27 04:57:45,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:57:45,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 04:57:45,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:57:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:57:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 04:57:45,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:46,025 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:57:46,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:46,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:46,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:46,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:46,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:46,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:57:46,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:46,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:57:46,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:46,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:57:46,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:46,102 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 04:57:46,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613395172] [2020-10-27 04:57:46,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:46,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:57:46,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103678367] [2020-10-27 04:57:46,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:57:46,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:46,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:57:46,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:57:46,104 INFO L87 Difference]: Start difference. First operand 7210 states and 9389 transitions. Second operand 6 states. [2020-10-27 04:57:46,518 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 04:57:48,367 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 04:57:49,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:57:49,509 INFO L93 Difference]: Finished difference Result 15432 states and 21027 transitions. [2020-10-27 04:57:49,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:57:49,510 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2020-10-27 04:57:49,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:57:49,523 INFO L225 Difference]: With dead ends: 15432 [2020-10-27 04:57:49,523 INFO L226 Difference]: Without dead ends: 9725 [2020-10-27 04:57:49,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:57:49,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9725 states. [2020-10-27 04:57:50,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9725 to 9522. [2020-10-27 04:57:50,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9522 states. [2020-10-27 04:57:50,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9522 states to 9522 states and 13003 transitions. [2020-10-27 04:57:50,558 INFO L78 Accepts]: Start accepts. Automaton has 9522 states and 13003 transitions. Word has length 167 [2020-10-27 04:57:50,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:57:50,558 INFO L481 AbstractCegarLoop]: Abstraction has 9522 states and 13003 transitions. [2020-10-27 04:57:50,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:57:50,558 INFO L276 IsEmpty]: Start isEmpty. Operand 9522 states and 13003 transitions. [2020-10-27 04:57:50,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-27 04:57:50,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:50,566 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:57:50,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:57:50,567 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:50,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:50,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1920514451, now seen corresponding path program 1 times [2020-10-27 04:57:50,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:50,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615644849] [2020-10-27 04:57:50,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:50,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:50,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:50,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:50,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:50,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:50,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:51,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:52,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:55,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:55,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-27 04:57:55,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:57:55,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:57:55,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:55,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:57:55,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:57:55,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 04:57:55,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:56,070 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:57:56,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:56,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:56,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:56,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:56,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:56,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:57:56,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:56,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:57:56,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:56,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:57:56,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:56,184 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 04:57:56,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615644849] [2020-10-27 04:57:56,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:56,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:57:56,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808806312] [2020-10-27 04:57:56,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:57:56,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:56,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:57:56,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:57:56,187 INFO L87 Difference]: Start difference. First operand 9522 states and 13003 transitions. Second operand 5 states. [2020-10-27 04:57:56,614 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 04:58:00,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:00,532 INFO L93 Difference]: Finished difference Result 16970 states and 23241 transitions. [2020-10-27 04:58:00,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:58:00,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-27 04:58:00,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:00,547 INFO L225 Difference]: With dead ends: 16970 [2020-10-27 04:58:00,547 INFO L226 Difference]: Without dead ends: 9501 [2020-10-27 04:58:00,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:58:00,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9501 states. [2020-10-27 04:58:01,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9501 to 9498. [2020-10-27 04:58:01,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9498 states. [2020-10-27 04:58:01,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9498 states to 9498 states and 12922 transitions. [2020-10-27 04:58:01,590 INFO L78 Accepts]: Start accepts. Automaton has 9498 states and 12922 transitions. Word has length 167 [2020-10-27 04:58:01,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:01,591 INFO L481 AbstractCegarLoop]: Abstraction has 9498 states and 12922 transitions. [2020-10-27 04:58:01,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:58:01,591 INFO L276 IsEmpty]: Start isEmpty. Operand 9498 states and 12922 transitions. [2020-10-27 04:58:01,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 04:58:01,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:01,596 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, 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 04:58:01,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:58:01,596 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:01,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:01,596 INFO L82 PathProgramCache]: Analyzing trace with hash 2107878337, now seen corresponding path program 1 times [2020-10-27 04:58:01,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:01,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566681902] [2020-10-27 04:58:01,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:01,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:01,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:01,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:01,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:03,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:04,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:06,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:06,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 04:58:06,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:58:06,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:58:06,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:06,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:58:06,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:58:06,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-27 04:58:06,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:06,942 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-27 04:58:07,396 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:58:07,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:58:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:07,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:07,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:07,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:58:07,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:58:07,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:58:07,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:07,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:58:07,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:58:07,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:58:07,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:07,492 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 04:58:07,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566681902] [2020-10-27 04:58:07,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:58:07,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:58:07,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088950113] [2020-10-27 04:58:07,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:58:07,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:58:07,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:58:07,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:58:07,495 INFO L87 Difference]: Start difference. First operand 9498 states and 12922 transitions. Second operand 11 states. [2020-10-27 04:58:07,952 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-27 04:58:11,531 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-27 04:58:11,987 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-27 04:58:12,420 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:58:12,844 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 04:58:13,267 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 04:58:13,719 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 04:58:14,159 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 04:58:14,621 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:58:21,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:21,210 INFO L93 Difference]: Finished difference Result 46165 states and 69746 transitions. [2020-10-27 04:58:21,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 04:58:21,211 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 168 [2020-10-27 04:58:21,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:21,287 INFO L225 Difference]: With dead ends: 46165 [2020-10-27 04:58:21,287 INFO L226 Difference]: Without dead ends: 41355 [2020-10-27 04:58:21,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=232, Invalid=824, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 04:58:21,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41355 states. [2020-10-27 04:58:23,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41355 to 15205. [2020-10-27 04:58:23,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15205 states. [2020-10-27 04:58:24,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15205 states to 15205 states and 21469 transitions. [2020-10-27 04:58:24,015 INFO L78 Accepts]: Start accepts. Automaton has 15205 states and 21469 transitions. Word has length 168 [2020-10-27 04:58:24,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:24,016 INFO L481 AbstractCegarLoop]: Abstraction has 15205 states and 21469 transitions. [2020-10-27 04:58:24,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:58:24,016 INFO L276 IsEmpty]: Start isEmpty. Operand 15205 states and 21469 transitions. [2020-10-27 04:58:24,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 04:58:24,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:24,023 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, 1, 1, 1, 1, 1, 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 04:58:24,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 04:58:24,023 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:24,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:24,024 INFO L82 PathProgramCache]: Analyzing trace with hash -476636210, now seen corresponding path program 1 times [2020-10-27 04:58:24,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:24,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371172019] [2020-10-27 04:58:24,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:24,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:24,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:24,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:24,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:29,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:29,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 04:58:29,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:58:29,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 04:58:29,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:29,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:58:29,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 04:58:29,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 04:58:29,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:29,511 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:58:29,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:58:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:29,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:29,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:29,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:58:29,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:58:29,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:58:29,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:29,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:58:29,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:58:29,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:58:29,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:29,570 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 04:58:29,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371172019] [2020-10-27 04:58:29,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:58:29,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:58:29,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760092578] [2020-10-27 04:58:29,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:58:29,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:58:29,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:58:29,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:58:29,572 INFO L87 Difference]: Start difference. First operand 15205 states and 21469 transitions. Second operand 5 states. [2020-10-27 04:58:32,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:32,889 INFO L93 Difference]: Finished difference Result 22068 states and 31274 transitions. [2020-10-27 04:58:32,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:58:32,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-27 04:58:32,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:32,908 INFO L225 Difference]: With dead ends: 22068 [2020-10-27 04:58:32,909 INFO L226 Difference]: Without dead ends: 13083 [2020-10-27 04:58:32,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:58:32,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13083 states. [2020-10-27 04:58:35,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13083 to 13083. [2020-10-27 04:58:35,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13083 states. [2020-10-27 04:58:35,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13083 states to 13083 states and 18402 transitions. [2020-10-27 04:58:35,063 INFO L78 Accepts]: Start accepts. Automaton has 13083 states and 18402 transitions. Word has length 168 [2020-10-27 04:58:35,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:35,063 INFO L481 AbstractCegarLoop]: Abstraction has 13083 states and 18402 transitions. [2020-10-27 04:58:35,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:58:35,063 INFO L276 IsEmpty]: Start isEmpty. Operand 13083 states and 18402 transitions. [2020-10-27 04:58:35,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-27 04:58:35,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:35,068 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, 1, 1, 1, 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 04:58:35,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 04:58:35,068 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:35,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:35,069 INFO L82 PathProgramCache]: Analyzing trace with hash -2024356313, now seen corresponding path program 1 times [2020-10-27 04:58:35,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:35,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639312101] [2020-10-27 04:58:35,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:35,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:35,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:35,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:37,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:37,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:39,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:40,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:40,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-27 04:58:40,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:58:40,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:58:40,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:58:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:58:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-27 04:58:40,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:40,455 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 34 [2020-10-27 04:58:40,919 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:58:40,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:58:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:40,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:40,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:40,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:58:40,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:58:40,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:58:40,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:58:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:58:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:58:40,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:41,029 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 04:58:41,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639312101] [2020-10-27 04:58:41,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:58:41,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:58:41,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006392578] [2020-10-27 04:58:41,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:58:41,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:58:41,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:58:41,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:58:41,031 INFO L87 Difference]: Start difference. First operand 13083 states and 18402 transitions. Second operand 11 states. [2020-10-27 04:58:41,499 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 04:58:48,393 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-27 04:58:48,796 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-27 04:58:49,277 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:58:49,768 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 04:58:50,233 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 217