/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.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:53:24,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:53:24,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:53:24,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:53:24,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:53:24,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:53:24,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:53:24,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:53:24,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:53:24,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:53:24,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:53:24,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:53:24,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:53:24,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:53:24,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:53:24,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:53:24,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:53:24,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:53:24,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:53:24,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:53:24,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:53:24,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:53:24,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:53:24,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:53:24,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:53:24,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:53:24,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:53:24,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:53:24,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:53:24,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:53:24,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:53:24,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:53:24,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:53:24,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:53:24,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:53:24,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:53:24,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:53:24,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:53:24,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:53:24,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:53:24,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:53:24,551 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 04:53:24,595 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:53:24,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:53:24,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:53:24,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:53:24,597 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:53:24,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:53:24,598 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:53:24,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:53:24,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:53:24,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:53:24,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:53:24,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:53:24,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:53:24,599 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:53:24,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:53:24,600 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:53:24,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:53:24,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:53:24,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:53:24,600 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:53:24,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:53:24,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:53:24,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:53:24,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:53:24,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:53:24,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:53:24,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:53:24,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:53:24,602 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:53:24,602 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:53:24,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:53:24,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:53:24,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:53:24,994 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:53:24,995 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:53:24,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-27 04:53:25,078 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49662862c/0dbe8b6c682d4e23b857244574cc7691/FLAG62a67e971 [2020-10-27 04:53:25,766 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:53:25,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-27 04:53:25,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49662862c/0dbe8b6c682d4e23b857244574cc7691/FLAG62a67e971 [2020-10-27 04:53:26,002 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49662862c/0dbe8b6c682d4e23b857244574cc7691 [2020-10-27 04:53:26,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:53:26,016 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:53:26,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:53:26,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:53:26,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:53:26,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:53:26" (1/1) ... [2020-10-27 04:53:26,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c08bcaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:26, skipping insertion in model container [2020-10-27 04:53:26,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:53:26" (1/1) ... [2020-10-27 04:53:26,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:53:26,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:53:26,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:53:26,585 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:53:26,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:53:26,832 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:53:26,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:26 WrapperNode [2020-10-27 04:53:26,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:53:26,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:53:26,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:53:26,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:53:26,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:26" (1/1) ... [2020-10-27 04:53:26,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:26" (1/1) ... [2020-10-27 04:53:26,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:26" (1/1) ... [2020-10-27 04:53:26,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:26" (1/1) ... [2020-10-27 04:53:26,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:26" (1/1) ... [2020-10-27 04:53:26,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:26" (1/1) ... [2020-10-27 04:53:26,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:26" (1/1) ... [2020-10-27 04:53:26,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:53:26,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:53:26,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:53:26,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:53:26,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:26" (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 04:53:27,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:53:27,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:53:27,056 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:53:27,056 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:53:27,056 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:53:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:53:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:53:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:53:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:53:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:53:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:53:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:53:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:53:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:53:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:53:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:53:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:53:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:53:27,059 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:53:27,059 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:53:27,059 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:53:27,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:53:27,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:53:27,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:53:27,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:53:27,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:53:27,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:53:28,372 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:53:28,372 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 04:53:28,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:53:28 BoogieIcfgContainer [2020-10-27 04:53:28,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:53:28,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:53:28,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:53:28,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:53:28,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:53:26" (1/3) ... [2020-10-27 04:53:28,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53644427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:53:28, skipping insertion in model container [2020-10-27 04:53:28,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:26" (2/3) ... [2020-10-27 04:53:28,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53644427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:53:28, skipping insertion in model container [2020-10-27 04:53:28,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:53:28" (3/3) ... [2020-10-27 04:53:28,383 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-27 04:53:28,395 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:53:28,400 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:53:28,413 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:53:28,443 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:53:28,444 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:53:28,444 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:53:28,444 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:53:28,444 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:53:28,444 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:53:28,444 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:53:28,444 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:53:28,469 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states. [2020-10-27 04:53:28,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 04:53:28,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:28,486 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 04:53:28,487 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:28,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:28,500 INFO L82 PathProgramCache]: Analyzing trace with hash 255437413, now seen corresponding path program 1 times [2020-10-27 04:53:28,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:28,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546434353] [2020-10-27 04:53:28,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:29,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:29,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:29,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:29,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:30,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:30,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:30,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:30,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:31,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:32,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:33,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:33,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:33,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-27 04:53:33,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 04:53:33,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 04:53:33,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:33,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:53:33,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:53:33,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:53:33,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 04:53:34,506 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:53:34,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:34,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:34,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:34,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:34,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:34,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:53:34,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:34,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:34,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:34,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:34,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:34,639 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 04:53:34,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546434353] [2020-10-27 04:53:34,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:34,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:53:34,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929725721] [2020-10-27 04:53:34,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:53:34,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:34,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:53:34,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:34,680 INFO L87 Difference]: Start difference. First operand 314 states. Second operand 5 states. [2020-10-27 04:53:37,541 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 04:53:38,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:38,489 INFO L93 Difference]: Finished difference Result 878 states and 1554 transitions. [2020-10-27 04:53:38,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:53:38,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-27 04:53:38,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:38,518 INFO L225 Difference]: With dead ends: 878 [2020-10-27 04:53:38,518 INFO L226 Difference]: Without dead ends: 581 [2020-10-27 04:53:38,524 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 04:53:38,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-10-27 04:53:38,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 578. [2020-10-27 04:53:38,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-10-27 04:53:38,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 835 transitions. [2020-10-27 04:53:38,635 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 835 transitions. Word has length 149 [2020-10-27 04:53:38,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:38,635 INFO L481 AbstractCegarLoop]: Abstraction has 578 states and 835 transitions. [2020-10-27 04:53:38,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:53:38,636 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 835 transitions. [2020-10-27 04:53:38,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-27 04:53:38,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:38,641 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 04:53:38,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:53:38,642 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:38,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:38,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1780121694, now seen corresponding path program 1 times [2020-10-27 04:53:38,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:38,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822108800] [2020-10-27 04:53:38,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:38,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:38,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:38,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:38,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:39,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:39,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:39,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:39,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:39,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:40,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:40,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:40,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:41,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:43,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:43,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 04:53:43,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 04:53:43,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 04:53:43,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:43,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:53:43,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:53:43,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 04:53:43,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:44,144 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:53:44,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:44,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:44,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:44,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:44,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:44,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:53:44,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:44,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:44,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:44,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:44,227 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 04:53:44,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822108800] [2020-10-27 04:53:44,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:44,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:53:44,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638961586] [2020-10-27 04:53:44,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:53:44,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:44,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:53:44,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:44,232 INFO L87 Difference]: Start difference. First operand 578 states and 835 transitions. Second operand 5 states. [2020-10-27 04:53:46,163 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 04:53:47,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:47,047 INFO L93 Difference]: Finished difference Result 1650 states and 2371 transitions. [2020-10-27 04:53:47,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:53:47,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-27 04:53:47,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:47,055 INFO L225 Difference]: With dead ends: 1650 [2020-10-27 04:53:47,055 INFO L226 Difference]: Without dead ends: 1100 [2020-10-27 04:53:47,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:53:47,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2020-10-27 04:53:47,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1097. [2020-10-27 04:53:47,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1097 states. [2020-10-27 04:53:47,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1562 transitions. [2020-10-27 04:53:47,156 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1562 transitions. Word has length 150 [2020-10-27 04:53:47,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:47,157 INFO L481 AbstractCegarLoop]: Abstraction has 1097 states and 1562 transitions. [2020-10-27 04:53:47,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:53:47,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1562 transitions. [2020-10-27 04:53:47,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-27 04:53:47,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:47,161 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 04:53:47,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:53:47,162 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:47,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:47,163 INFO L82 PathProgramCache]: Analyzing trace with hash -796661629, now seen corresponding path program 1 times [2020-10-27 04:53:47,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:47,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072276296] [2020-10-27 04:53:47,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:47,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:47,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:47,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:47,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:47,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:47,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:48,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:48,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:48,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:48,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:52,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:52,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 04:53:52,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 04:53:52,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-27 04:53:52,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:53:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:53:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 04:53:52,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:52,676 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:53:52,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:52,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:52,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:52,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:52,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:52,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:53:52,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:52,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:52,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:52,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:52,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:52,762 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 04:53:52,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072276296] [2020-10-27 04:53:52,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:52,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:53:52,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055242400] [2020-10-27 04:53:52,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:53:52,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:52,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:53:52,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:52,768 INFO L87 Difference]: Start difference. First operand 1097 states and 1562 transitions. Second operand 5 states. [2020-10-27 04:53:55,062 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 04:53:56,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:56,037 INFO L93 Difference]: Finished difference Result 3093 states and 4412 transitions. [2020-10-27 04:53:56,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:53:56,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-27 04:53:56,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:56,049 INFO L225 Difference]: With dead ends: 3093 [2020-10-27 04:53:56,049 INFO L226 Difference]: Without dead ends: 2124 [2020-10-27 04:53:56,051 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 04:53:56,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2020-10-27 04:53:56,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 2121. [2020-10-27 04:53:56,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2121 states. [2020-10-27 04:53:56,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2121 states to 2121 states and 2986 transitions. [2020-10-27 04:53:56,198 INFO L78 Accepts]: Start accepts. Automaton has 2121 states and 2986 transitions. Word has length 151 [2020-10-27 04:53:56,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:56,198 INFO L481 AbstractCegarLoop]: Abstraction has 2121 states and 2986 transitions. [2020-10-27 04:53:56,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:53:56,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2121 states and 2986 transitions. [2020-10-27 04:53:56,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 04:53:56,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:56,203 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 04:53:56,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:53:56,204 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:56,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:56,205 INFO L82 PathProgramCache]: Analyzing trace with hash 700506754, now seen corresponding path program 1 times [2020-10-27 04:53:56,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:56,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96024697] [2020-10-27 04:53:56,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:56,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:56,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:56,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:56,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:56,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:56,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:56,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:57,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:58,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:58,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:00,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:01,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:01,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:01,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 04:54:01,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 04:54:01,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 04:54:01,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:01,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:54:01,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:54:01,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 04:54:01,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:01,823 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:54:01,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:01,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:01,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:01,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:01,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:01,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:54:01,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:01,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:01,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:01,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:01,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:01,942 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 04:54:01,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96024697] [2020-10-27 04:54:01,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:01,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:01,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065035266] [2020-10-27 04:54:01,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:54:01,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:01,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:54:01,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:54:01,946 INFO L87 Difference]: Start difference. First operand 2121 states and 2986 transitions. Second operand 5 states. [2020-10-27 04:54:04,244 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 04:54:05,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:05,310 INFO L93 Difference]: Finished difference Result 5633 states and 7987 transitions. [2020-10-27 04:54:05,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:54:05,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-27 04:54:05,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:05,329 INFO L225 Difference]: With dead ends: 5633 [2020-10-27 04:54:05,330 INFO L226 Difference]: Without dead ends: 4106 [2020-10-27 04:54:05,334 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 04:54:05,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4106 states. [2020-10-27 04:54:05,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4106 to 4103. [2020-10-27 04:54:05,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4103 states. [2020-10-27 04:54:05,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4103 states to 4103 states and 5707 transitions. [2020-10-27 04:54:05,638 INFO L78 Accepts]: Start accepts. Automaton has 4103 states and 5707 transitions. Word has length 152 [2020-10-27 04:54:05,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:05,639 INFO L481 AbstractCegarLoop]: Abstraction has 4103 states and 5707 transitions. [2020-10-27 04:54:05,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:54:05,639 INFO L276 IsEmpty]: Start isEmpty. Operand 4103 states and 5707 transitions. [2020-10-27 04:54:05,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-27 04:54:05,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:05,646 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] [2020-10-27 04:54:05,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:54:05,647 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:05,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:05,647 INFO L82 PathProgramCache]: Analyzing trace with hash -222693758, now seen corresponding path program 1 times [2020-10-27 04:54:05,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:05,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367907199] [2020-10-27 04:54:05,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:05,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:05,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:05,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:05,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:05,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:05,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:07,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:07,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:10,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:10,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:10,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-27 04:54:10,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 04:54:10,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:54:10,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:10,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:54:10,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:54:10,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 04:54:10,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:11,126 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:54:11,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:11,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:11,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:11,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:11,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:11,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:54:11,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:11,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:11,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:11,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:11,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:11,225 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 04:54:11,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367907199] [2020-10-27 04:54:11,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:11,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:11,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272197270] [2020-10-27 04:54:11,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:54:11,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:11,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:54:11,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:54:11,240 INFO L87 Difference]: Start difference. First operand 4103 states and 5707 transitions. Second operand 5 states. [2020-10-27 04:54:13,692 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 04:54:14,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:14,780 INFO L93 Difference]: Finished difference Result 11005 states and 15393 transitions. [2020-10-27 04:54:14,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:54:14,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-27 04:54:14,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:14,813 INFO L225 Difference]: With dead ends: 11005 [2020-10-27 04:54:14,813 INFO L226 Difference]: Without dead ends: 7898 [2020-10-27 04:54:14,821 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 04:54:14,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7898 states. [2020-10-27 04:54:15,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7898 to 7895. [2020-10-27 04:54:15,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7895 states. [2020-10-27 04:54:15,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7895 states to 7895 states and 10829 transitions. [2020-10-27 04:54:15,568 INFO L78 Accepts]: Start accepts. Automaton has 7895 states and 10829 transitions. Word has length 153 [2020-10-27 04:54:15,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:15,568 INFO L481 AbstractCegarLoop]: Abstraction has 7895 states and 10829 transitions. [2020-10-27 04:54:15,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:54:15,569 INFO L276 IsEmpty]: Start isEmpty. Operand 7895 states and 10829 transitions. [2020-10-27 04:54:15,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 04:54:15,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:15,582 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] [2020-10-27 04:54:15,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:54:15,582 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:15,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:15,583 INFO L82 PathProgramCache]: Analyzing trace with hash 440188450, now seen corresponding path program 1 times [2020-10-27 04:54:15,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:15,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377605397] [2020-10-27 04:54:15,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:15,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:15,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:15,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:15,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:15,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:15,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:20,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:20,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 04:54:20,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:54:20,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 04:54:20,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:20,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:54:20,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 04:54:20,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:54:20,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:21,020 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:54:21,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:21,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:21,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:21,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:21,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:21,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:54:21,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:21,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:21,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:21,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:21,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:21,091 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 04:54:21,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377605397] [2020-10-27 04:54:21,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:21,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:21,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781242704] [2020-10-27 04:54:21,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:54:21,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:21,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:54:21,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:54:21,094 INFO L87 Difference]: Start difference. First operand 7895 states and 10829 transitions. Second operand 5 states. [2020-10-27 04:54:22,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:22,884 INFO L93 Difference]: Finished difference Result 13828 states and 18924 transitions. [2020-10-27 04:54:22,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:54:22,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-27 04:54:22,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:22,905 INFO L225 Difference]: With dead ends: 13828 [2020-10-27 04:54:22,905 INFO L226 Difference]: Without dead ends: 6049 [2020-10-27 04:54:22,920 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 04:54:22,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6049 states. [2020-10-27 04:54:23,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6049 to 6049. [2020-10-27 04:54:23,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6049 states. [2020-10-27 04:54:23,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6049 states to 6049 states and 8273 transitions. [2020-10-27 04:54:23,420 INFO L78 Accepts]: Start accepts. Automaton has 6049 states and 8273 transitions. Word has length 154 [2020-10-27 04:54:23,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:23,420 INFO L481 AbstractCegarLoop]: Abstraction has 6049 states and 8273 transitions. [2020-10-27 04:54:23,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:54:23,421 INFO L276 IsEmpty]: Start isEmpty. Operand 6049 states and 8273 transitions. [2020-10-27 04:54:23,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-27 04:54:23,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:23,434 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] [2020-10-27 04:54:23,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:54:23,434 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:23,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:23,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1550956236, now seen corresponding path program 1 times [2020-10-27 04:54:23,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:23,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816955921] [2020-10-27 04:54:23,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:23,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:23,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:23,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:23,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:23,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:23,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:23,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:23,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:28,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:28,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 04:54:28,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:54:28,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:54:28,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:54:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:54:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:54:28,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:28,913 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:54:28,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:28,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:28,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:28,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:28,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:28,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:54:28,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:28,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:54:28,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:28,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:54:28,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:28,984 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 04:54:28,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816955921] [2020-10-27 04:54:28,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:28,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:28,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596092952] [2020-10-27 04:54:28,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:54:28,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:28,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:54:28,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:54:28,987 INFO L87 Difference]: Start difference. First operand 6049 states and 8273 transitions. Second operand 6 states. [2020-10-27 04:54:29,410 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 04:54:31,139 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 04:54:31,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:31,879 INFO L93 Difference]: Finished difference Result 14036 states and 19602 transitions. [2020-10-27 04:54:31,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:54:31,880 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2020-10-27 04:54:31,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:31,915 INFO L225 Difference]: With dead ends: 14036 [2020-10-27 04:54:31,915 INFO L226 Difference]: Without dead ends: 9061 [2020-10-27 04:54:31,927 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 04:54:31,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9061 states. [2020-10-27 04:54:32,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9061 to 9058. [2020-10-27 04:54:32,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9058 states. [2020-10-27 04:54:32,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9058 states to 9058 states and 12470 transitions. [2020-10-27 04:54:32,619 INFO L78 Accepts]: Start accepts. Automaton has 9058 states and 12470 transitions. Word has length 161 [2020-10-27 04:54:32,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:32,619 INFO L481 AbstractCegarLoop]: Abstraction has 9058 states and 12470 transitions. [2020-10-27 04:54:32,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:54:32,619 INFO L276 IsEmpty]: Start isEmpty. Operand 9058 states and 12470 transitions. [2020-10-27 04:54:32,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-27 04:54:32,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:32,635 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] [2020-10-27 04:54:32,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:54:32,635 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:32,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:32,636 INFO L82 PathProgramCache]: Analyzing trace with hash -698888500, now seen corresponding path program 1 times [2020-10-27 04:54:32,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:32,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58419459] [2020-10-27 04:54:32,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:32,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:32,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:32,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:32,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:32,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:33,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:33,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:35,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:37,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:37,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 04:54:37,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:54:37,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 04:54:37,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:54:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:54:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 04:54:37,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:38,097 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:54:38,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:38,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:38,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:38,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:38,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:38,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:54:38,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:38,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:38,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:38,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:38,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:38,191 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 04:54:38,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58419459] [2020-10-27 04:54:38,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:38,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:38,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490500395] [2020-10-27 04:54:38,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:54:38,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:38,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:54:38,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:54:38,202 INFO L87 Difference]: Start difference. First operand 9058 states and 12470 transitions. Second operand 5 states. [2020-10-27 04:54:40,911 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 04:54:42,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:42,332 INFO L93 Difference]: Finished difference Result 23150 states and 31912 transitions. [2020-10-27 04:54:42,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:54:42,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-27 04:54:42,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:42,365 INFO L225 Difference]: With dead ends: 23150 [2020-10-27 04:54:42,365 INFO L226 Difference]: Without dead ends: 14736 [2020-10-27 04:54:42,381 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 04:54:42,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14736 states. [2020-10-27 04:54:43,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14736 to 14733. [2020-10-27 04:54:43,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14733 states. [2020-10-27 04:54:43,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14733 states to 14733 states and 19970 transitions. [2020-10-27 04:54:43,802 INFO L78 Accepts]: Start accepts. Automaton has 14733 states and 19970 transitions. Word has length 161 [2020-10-27 04:54:43,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:43,803 INFO L481 AbstractCegarLoop]: Abstraction has 14733 states and 19970 transitions. [2020-10-27 04:54:43,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:54:43,803 INFO L276 IsEmpty]: Start isEmpty. Operand 14733 states and 19970 transitions. [2020-10-27 04:54:43,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 04:54:43,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:43,824 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] [2020-10-27 04:54:43,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:54:43,825 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:43,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:43,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1376860822, now seen corresponding path program 1 times [2020-10-27 04:54:43,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:43,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412663072] [2020-10-27 04:54:43,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:43,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:43,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:44,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:44,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:44,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:44,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:48,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:48,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 04:54:48,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:54:48,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:54:48,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:54:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:54:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:54:48,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:49,205 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:54:49,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:49,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:49,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:49,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:49,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:49,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:54:49,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:49,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:49,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:49,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:49,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:49,244 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 04:54:49,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412663072] [2020-10-27 04:54:49,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:49,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 04:54:49,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626328643] [2020-10-27 04:54:49,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 04:54:49,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:49,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 04:54:49,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:54:49,246 INFO L87 Difference]: Start difference. First operand 14733 states and 19970 transitions. Second operand 4 states. [2020-10-27 04:54:52,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:52,268 INFO L93 Difference]: Finished difference Result 29011 states and 39375 transitions. [2020-10-27 04:54:52,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 04:54:52,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2020-10-27 04:54:52,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:52,309 INFO L225 Difference]: With dead ends: 29011 [2020-10-27 04:54:52,310 INFO L226 Difference]: Without dead ends: 17665 [2020-10-27 04:54:52,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:54:52,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17665 states. [2020-10-27 04:54:53,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17665 to 14733. [2020-10-27 04:54:53,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14733 states. [2020-10-27 04:54:53,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14733 states to 14733 states and 19969 transitions. [2020-10-27 04:54:53,695 INFO L78 Accepts]: Start accepts. Automaton has 14733 states and 19969 transitions. Word has length 162 [2020-10-27 04:54:53,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:53,695 INFO L481 AbstractCegarLoop]: Abstraction has 14733 states and 19969 transitions. [2020-10-27 04:54:53,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 04:54:53,695 INFO L276 IsEmpty]: Start isEmpty. Operand 14733 states and 19969 transitions. [2020-10-27 04:54:53,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-27 04:54:53,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:53,713 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] [2020-10-27 04:54:53,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:54:53,713 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:53,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:53,714 INFO L82 PathProgramCache]: Analyzing trace with hash 2143072214, now seen corresponding path program 1 times [2020-10-27 04:54:53,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:53,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073335819] [2020-10-27 04:54:53,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:53,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:53,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:53,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:53,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:53,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:54,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:54,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:58,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:58,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 04:54:58,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:54:58,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 04:54:58,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:58,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:54:58,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:54:58,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 04:54:58,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:59,209 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:54:59,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:59,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:59,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:59,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:59,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:59,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:54:59,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:59,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:59,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:59,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:59,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:59,270 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 04:54:59,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073335819] [2020-10-27 04:54:59,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:59,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:59,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928799712] [2020-10-27 04:54:59,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:54:59,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:59,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:54:59,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:54:59,272 INFO L87 Difference]: Start difference. First operand 14733 states and 19969 transitions. Second operand 5 states. [2020-10-27 04:55:01,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:01,702 INFO L93 Difference]: Finished difference Result 26479 states and 35884 transitions. [2020-10-27 04:55:01,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:55:01,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-27 04:55:01,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:01,733 INFO L225 Difference]: With dead ends: 26479 [2020-10-27 04:55:01,733 INFO L226 Difference]: Without dead ends: 11968 [2020-10-27 04:55:01,754 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 04:55:01,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11968 states. [2020-10-27 04:55:02,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11968 to 11968. [2020-10-27 04:55:02,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11968 states. [2020-10-27 04:55:02,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11968 states to 11968 states and 16173 transitions. [2020-10-27 04:55:02,975 INFO L78 Accepts]: Start accepts. Automaton has 11968 states and 16173 transitions. Word has length 163 [2020-10-27 04:55:02,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:02,975 INFO L481 AbstractCegarLoop]: Abstraction has 11968 states and 16173 transitions. [2020-10-27 04:55:02,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:55:02,975 INFO L276 IsEmpty]: Start isEmpty. Operand 11968 states and 16173 transitions. [2020-10-27 04:55:02,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-27 04:55:02,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:02,985 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] [2020-10-27 04:55:02,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:55:02,986 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:02,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:02,986 INFO L82 PathProgramCache]: Analyzing trace with hash -540075475, now seen corresponding path program 1 times [2020-10-27 04:55:02,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:02,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577924652] [2020-10-27 04:55:02,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:03,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:03,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:03,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:03,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:03,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:03,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:08,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:08,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-27 04:55:08,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:55:08,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:55:08,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:55:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 04:55:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:55:08,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:08,423 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:55:08,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:08,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:08,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:08,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:08,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:08,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:55:08,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:08,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:55:08,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:08,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:55:08,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:08,484 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 04:55:08,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577924652] [2020-10-27 04:55:08,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:08,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:55:08,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502472371] [2020-10-27 04:55:08,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:55:08,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:08,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:55:08,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:55:08,487 INFO L87 Difference]: Start difference. First operand 11968 states and 16173 transitions. Second operand 5 states. [2020-10-27 04:55:10,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:10,744 INFO L93 Difference]: Finished difference Result 20795 states and 28114 transitions. [2020-10-27 04:55:10,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:55:10,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-27 04:55:10,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:10,760 INFO L225 Difference]: With dead ends: 20795 [2020-10-27 04:55:10,760 INFO L226 Difference]: Without dead ends: 8904 [2020-10-27 04:55:10,780 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 04:55:10,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8904 states. [2020-10-27 04:55:11,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8904 to 8904. [2020-10-27 04:55:11,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8904 states. [2020-10-27 04:55:11,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8904 states to 8904 states and 12042 transitions. [2020-10-27 04:55:11,748 INFO L78 Accepts]: Start accepts. Automaton has 8904 states and 12042 transitions. Word has length 169 [2020-10-27 04:55:11,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:11,748 INFO L481 AbstractCegarLoop]: Abstraction has 8904 states and 12042 transitions. [2020-10-27 04:55:11,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:55:11,748 INFO L276 IsEmpty]: Start isEmpty. Operand 8904 states and 12042 transitions. [2020-10-27 04:55:11,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-27 04:55:11,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:11,756 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, 1, 1, 1] [2020-10-27 04:55:11,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:55:11,756 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:11,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:11,756 INFO L82 PathProgramCache]: Analyzing trace with hash -250550969, now seen corresponding path program 1 times [2020-10-27 04:55:11,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:11,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004116781] [2020-10-27 04:55:11,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:11,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:11,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:11,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:12,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:12,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:12,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:12,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:12,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:12,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:13,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:14,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:16,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:16,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 04:55:16,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 04:55:16,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 04:55:16,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:16,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:55:16,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:55:16,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 04:55:16,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:17,170 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:55:17,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:17,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:17,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:17,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:17,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:17,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:55:17,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:55:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:55:17,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:17,227 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 04:55:17,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004116781] [2020-10-27 04:55:17,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:17,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:55:17,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796880193] [2020-10-27 04:55:17,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:55:17,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:17,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:55:17,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:55:17,229 INFO L87 Difference]: Start difference. First operand 8904 states and 12042 transitions. Second operand 6 states. [2020-10-27 04:55:17,621 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-27 04:55:19,965 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 04:55:21,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:21,453 INFO L93 Difference]: Finished difference Result 23436 states and 32212 transitions. [2020-10-27 04:55:21,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:55:21,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2020-10-27 04:55:21,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:21,476 INFO L225 Difference]: With dead ends: 23436 [2020-10-27 04:55:21,476 INFO L226 Difference]: Without dead ends: 15671 [2020-10-27 04:55:21,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:55:21,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15671 states. [2020-10-27 04:55:22,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15671 to 15668. [2020-10-27 04:55:22,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15668 states. [2020-10-27 04:55:22,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15668 states to 15668 states and 21307 transitions. [2020-10-27 04:55:22,890 INFO L78 Accepts]: Start accepts. Automaton has 15668 states and 21307 transitions. Word has length 176 [2020-10-27 04:55:22,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:22,890 INFO L481 AbstractCegarLoop]: Abstraction has 15668 states and 21307 transitions. [2020-10-27 04:55:22,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:55:22,890 INFO L276 IsEmpty]: Start isEmpty. Operand 15668 states and 21307 transitions. [2020-10-27 04:55:22,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-27 04:55:22,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:22,903 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, 1, 1, 1] [2020-10-27 04:55:22,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:55:22,904 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:22,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:22,904 INFO L82 PathProgramCache]: Analyzing trace with hash -762500052, now seen corresponding path program 1 times [2020-10-27 04:55:22,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:22,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182877589] [2020-10-27 04:55:22,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:22,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:22,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:22,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:23,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:23,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:23,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:23,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:23,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:23,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:25,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:26,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:26,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:26,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:27,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:27,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:27,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:27,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 04:55:27,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 04:55:27,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:55:27,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:27,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:55:27,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:55:27,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 04:55:27,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:28,333 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:55:28,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:28,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:28,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:28,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:28,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:28,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:55:28,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:28,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:55:28,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:28,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:55:28,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:28,400 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 04:55:28,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182877589] [2020-10-27 04:55:28,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:28,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 04:55:28,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390797196] [2020-10-27 04:55:28,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 04:55:28,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:28,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 04:55:28,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:55:28,402 INFO L87 Difference]: Start difference. First operand 15668 states and 21307 transitions. Second operand 7 states. [2020-10-27 04:55:28,798 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 04:55:31,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:31,450 INFO L93 Difference]: Finished difference Result 24381 states and 34463 transitions. [2020-10-27 04:55:31,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:55:31,451 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-10-27 04:55:31,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:31,468 INFO L225 Difference]: With dead ends: 24381 [2020-10-27 04:55:31,468 INFO L226 Difference]: Without dead ends: 13789 [2020-10-27 04:55:31,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:55:31,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13789 states. [2020-10-27 04:55:32,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13789 to 8791. [2020-10-27 04:55:32,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8791 states. [2020-10-27 04:55:32,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8791 states to 8791 states and 11732 transitions. [2020-10-27 04:55:32,378 INFO L78 Accepts]: Start accepts. Automaton has 8791 states and 11732 transitions. Word has length 176 [2020-10-27 04:55:32,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:32,379 INFO L481 AbstractCegarLoop]: Abstraction has 8791 states and 11732 transitions. [2020-10-27 04:55:32,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 04:55:32,379 INFO L276 IsEmpty]: Start isEmpty. Operand 8791 states and 11732 transitions. [2020-10-27 04:55:32,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-27 04:55:32,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:32,386 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, 1, 1, 1] [2020-10-27 04:55:32,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:55:32,387 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:32,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:32,387 INFO L82 PathProgramCache]: Analyzing trace with hash -539513071, now seen corresponding path program 1 times [2020-10-27 04:55:32,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:32,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861926291] [2020-10-27 04:55:32,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:32,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:32,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:32,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:32,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:32,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:32,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:32,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:33,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:33,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:33,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:37,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:37,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 04:55:37,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 04:55:37,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 04:55:37,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:55:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:55:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-27 04:55:37,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:38,052 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:55:38,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:38,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:38,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:38,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:38,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:38,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:55:38,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:38,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:55:38,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:38,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:55:38,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:38,159 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 04:55:38,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861926291] [2020-10-27 04:55:38,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:38,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 04:55:38,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599215774] [2020-10-27 04:55:38,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:55:38,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:38,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:55:38,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:55:38,161 INFO L87 Difference]: Start difference. First operand 8791 states and 11732 transitions. Second operand 13 states. [2020-10-27 04:55:38,946 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 209 [2020-10-27 04:55:39,602 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-27 04:55:40,265 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-10-27 04:55:40,716 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-27 04:55:41,822 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-27 04:55:42,894 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-27 04:55:45,188 WARN L193 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 218 [2020-10-27 04:55:46,057 WARN L193 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-10-27 04:55:49,874 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-10-27 04:55:50,811 WARN L193 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 225 [2020-10-27 04:55:51,990 WARN L193 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 218 [2020-10-27 04:55:52,754 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 215 [2020-10-27 04:55:53,977 WARN L193 SmtUtils]: Spent 898.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 222 [2020-10-27 04:55:54,420 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-27 04:55:57,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:57,467 INFO L93 Difference]: Finished difference Result 49215 states and 71805 transitions. [2020-10-27 04:55:57,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 04:55:57,468 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 176 [2020-10-27 04:55:57,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:57,518 INFO L225 Difference]: With dead ends: 49215 [2020-10-27 04:55:57,518 INFO L226 Difference]: Without dead ends: 45349 [2020-10-27 04:55:57,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 972 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=776, Invalid=2304, Unknown=0, NotChecked=0, Total=3080 [2020-10-27 04:55:57,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45349 states. [2020-10-27 04:55:59,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45349 to 13209. [2020-10-27 04:55:59,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13209 states. [2020-10-27 04:55:59,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13209 states to 13209 states and 18058 transitions. [2020-10-27 04:55:59,504 INFO L78 Accepts]: Start accepts. Automaton has 13209 states and 18058 transitions. Word has length 176 [2020-10-27 04:55:59,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:59,505 INFO L481 AbstractCegarLoop]: Abstraction has 13209 states and 18058 transitions. [2020-10-27 04:55:59,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:55:59,505 INFO L276 IsEmpty]: Start isEmpty. Operand 13209 states and 18058 transitions. [2020-10-27 04:55:59,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-27 04:55:59,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:59,514 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, 1, 1, 1] [2020-10-27 04:55:59,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:55:59,515 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:59,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:59,515 INFO L82 PathProgramCache]: Analyzing trace with hash -343834836, now seen corresponding path program 1 times [2020-10-27 04:55:59,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:59,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081949257] [2020-10-27 04:55:59,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:59,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:59,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:59,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:59,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:59,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:59,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:59,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:04,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:04,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 04:56:04,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:56:04,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 04:56:04,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:56:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:56:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 04:56:04,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:05,374 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:56:05,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:56:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:05,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:05,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:05,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:56:05,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:05,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:56:05,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:05,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:56:05,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:56:05,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:56:05,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:05,459 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 04:56:05,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081949257] [2020-10-27 04:56:05,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:56:05,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 04:56:05,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548118118] [2020-10-27 04:56:05,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:56:05,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:56:05,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:56:05,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:56:05,461 INFO L87 Difference]: Start difference. First operand 13209 states and 18058 transitions. Second operand 12 states. [2020-10-27 04:56:05,600 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2020-10-27 04:56:06,545 WARN L193 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 244 [2020-10-27 04:56:07,242 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2020-10-27 04:56:07,428 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2020-10-27 04:56:10,658 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 04:56:13,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:56:13,002 INFO L93 Difference]: Finished difference Result 24913 states and 34185 transitions. [2020-10-27 04:56:13,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:56:13,002 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 176 [2020-10-27 04:56:13,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:56:13,030 INFO L225 Difference]: With dead ends: 24913 [2020-10-27 04:56:13,030 INFO L226 Difference]: Without dead ends: 22904 [2020-10-27 04:56:13,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2020-10-27 04:56:13,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22904 states. [2020-10-27 04:56:14,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22904 to 13791. [2020-10-27 04:56:14,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13791 states. [2020-10-27 04:56:14,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13791 states to 13791 states and 18744 transitions. [2020-10-27 04:56:14,922 INFO L78 Accepts]: Start accepts. Automaton has 13791 states and 18744 transitions. Word has length 176 [2020-10-27 04:56:14,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:56:14,923 INFO L481 AbstractCegarLoop]: Abstraction has 13791 states and 18744 transitions. [2020-10-27 04:56:14,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:56:14,923 INFO L276 IsEmpty]: Start isEmpty. Operand 13791 states and 18744 transitions. [2020-10-27 04:56:14,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-27 04:56:14,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:56:14,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:56:14,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:56:14,930 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:56:14,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:56:14,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1798263427, now seen corresponding path program 1 times [2020-10-27 04:56:14,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:56:14,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039053015] [2020-10-27 04:56:14,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:56:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:14,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:15,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:15,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:15,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:15,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:15,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:15,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:15,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:18,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:19,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:19,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 04:56:19,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 04:56:19,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 04:56:19,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:19,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:56:19,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:56:19,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 04:56:19,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:20,362 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:56:20,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:56:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:20,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:20,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:20,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:56:20,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:20,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:56:20,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:20,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:56:20,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:56:20,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:56:20,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:20,409 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 04:56:20,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039053015] [2020-10-27 04:56:20,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:56:20,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:56:20,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024088994] [2020-10-27 04:56:20,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:56:20,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:56:20,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:56:20,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:56:20,411 INFO L87 Difference]: Start difference. First operand 13791 states and 18744 transitions. Second operand 5 states. [2020-10-27 04:56:20,802 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 04:56:25,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:56:25,239 INFO L93 Difference]: Finished difference Result 25793 states and 34978 transitions. [2020-10-27 04:56:25,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:56:25,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-10-27 04:56:25,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:56:25,251 INFO L225 Difference]: With dead ends: 25793 [2020-10-27 04:56:25,251 INFO L226 Difference]: Without dead ends: 13772 [2020-10-27 04:56:25,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 04:56:25,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13772 states. [2020-10-27 04:56:27,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13772 to 13737. [2020-10-27 04:56:27,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13737 states. [2020-10-27 04:56:27,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13737 states to 13737 states and 18613 transitions. [2020-10-27 04:56:27,090 INFO L78 Accepts]: Start accepts. Automaton has 13737 states and 18613 transitions. Word has length 176 [2020-10-27 04:56:27,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:56:27,090 INFO L481 AbstractCegarLoop]: Abstraction has 13737 states and 18613 transitions. [2020-10-27 04:56:27,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:56:27,091 INFO L276 IsEmpty]: Start isEmpty. Operand 13737 states and 18613 transitions. [2020-10-27 04:56:27,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-27 04:56:27,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:56:27,099 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, 1, 1, 1, 1] [2020-10-27 04:56:27,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 04:56:27,100 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:56:27,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:56:27,100 INFO L82 PathProgramCache]: Analyzing trace with hash -127490742, now seen corresponding path program 1 times [2020-10-27 04:56:27,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:56:27,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553981898] [2020-10-27 04:56:27,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:56:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:27,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:27,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:27,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:27,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:27,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:30,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:31,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:31,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:32,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:32,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-27 04:56:32,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:56:32,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 04:56:32,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:32,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:56:32,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:56:32,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-27 04:56:32,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:32,852 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:56:32,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:56:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:32,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:32,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:32,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:56:32,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:32,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:56:32,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:32,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:56:32,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:56:32,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:56:32,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:32,925 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 04:56:32,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553981898] [2020-10-27 04:56:32,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:56:32,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 04:56:32,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616968612] [2020-10-27 04:56:32,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:56:32,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:56:32,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:56:32,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:56:32,927 INFO L87 Difference]: Start difference. First operand 13737 states and 18613 transitions. Second operand 13 states. [2020-10-27 04:56:33,830 WARN L193 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 213 [2020-10-27 04:56:38,560 WARN L193 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 209 [2020-10-27 04:56:38,957 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 04:56:42,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:56:42,243 INFO L93 Difference]: Finished difference Result 27934 states and 39155 transitions. [2020-10-27 04:56:42,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 04:56:42,243 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 177 [2020-10-27 04:56:42,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:56:42,268 INFO L225 Difference]: With dead ends: 27934 [2020-10-27 04:56:42,268 INFO L226 Difference]: Without dead ends: 26821 [2020-10-27 04:56:42,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=267, Invalid=993, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 04:56:42,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26821 states. [2020-10-27 04:56:44,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26821 to 14573. [2020-10-27 04:56:44,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14573 states. [2020-10-27 04:56:44,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14573 states to 14573 states and 19597 transitions. [2020-10-27 04:56:44,317 INFO L78 Accepts]: Start accepts. Automaton has 14573 states and 19597 transitions. Word has length 177 [2020-10-27 04:56:44,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:56:44,317 INFO L481 AbstractCegarLoop]: Abstraction has 14573 states and 19597 transitions. [2020-10-27 04:56:44,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:56:44,318 INFO L276 IsEmpty]: Start isEmpty. Operand 14573 states and 19597 transitions. [2020-10-27 04:56:44,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-27 04:56:44,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:56:44,326 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, 1, 1, 1, 1] [2020-10-27 04:56:44,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 04:56:44,327 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:56:44,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:56:44,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1164444135, now seen corresponding path program 1 times [2020-10-27 04:56:44,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:56:44,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464445482] [2020-10-27 04:56:44,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:56:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:44,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:44,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:44,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:44,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:44,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:49,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:49,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:49,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-27 04:56:49,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:56:49,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 04:56:49,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:49,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:56:49,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:56:49,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-27 04:56:49,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:49,761 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 28 [2020-10-27 04:56:50,473 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:56:50,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:56:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:50,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:50,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:50,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:56:50,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:50,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:56:50,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:56:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:56:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:56:50,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:50,579 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 04:56:50,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464445482] [2020-10-27 04:56:50,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:56:50,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 04:56:50,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533423480] [2020-10-27 04:56:50,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:56:50,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:56:50,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:56:50,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:56:50,581 INFO L87 Difference]: Start difference. First operand 14573 states and 19597 transitions. Second operand 15 states. [2020-10-27 04:56:51,011 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 209