/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:01:10,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:01:10,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:01:11,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:01:11,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:01:11,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:01:11,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:01:11,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:01:11,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:01:11,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:01:11,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:01:11,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:01:11,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:01:11,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:01:11,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:01:11,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:01:11,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:01:11,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:01:11,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:01:11,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:01:11,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:01:11,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:01:11,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:01:11,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:01:11,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:01:11,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:01:11,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:01:11,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:01:11,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:01:11,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:01:11,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:01:11,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:01:11,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:01:11,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:01:11,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:01:11,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:01:11,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:01:11,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:01:11,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:01:11,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:01:11,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:01:11,101 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 18:01:11,162 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:01:11,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:01:11,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:01:11,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:01:11,165 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:01:11,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:01:11,165 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:01:11,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:01:11,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:01:11,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:01:11,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:01:11,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:01:11,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:01:11,167 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:01:11,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:01:11,167 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:01:11,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:01:11,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:01:11,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:01:11,168 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:01:11,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:01:11,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:01:11,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:01:11,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:01:11,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:01:11,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:01:11,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:01:11,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:01:11,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:01:11,170 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:01:11,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:01:11,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:01:11,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:01:11,642 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:01:11,643 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:01:11,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.1.ufo.UNBOUNDED.pals.c [2020-10-28 18:01:11,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f257446e/8b5c3a0efba24a1ba428f04f33b80870/FLAG1b43ce9d6 [2020-10-28 18:01:12,567 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:01:12,568 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.1.ufo.UNBOUNDED.pals.c [2020-10-28 18:01:12,596 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f257446e/8b5c3a0efba24a1ba428f04f33b80870/FLAG1b43ce9d6 [2020-10-28 18:01:12,822 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f257446e/8b5c3a0efba24a1ba428f04f33b80870 [2020-10-28 18:01:12,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:01:12,833 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:01:12,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:01:12,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:01:12,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:01:12,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:01:12" (1/1) ... [2020-10-28 18:01:12,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a5fc48a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:01:12, skipping insertion in model container [2020-10-28 18:01:12,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:01:12" (1/1) ... [2020-10-28 18:01:12,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:01:12,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:01:13,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:01:13,516 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:01:13,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:01:13,704 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:01:13,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:01:13 WrapperNode [2020-10-28 18:01:13,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:01:13,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:01:13,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:01:13,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:01:13,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:01:13" (1/1) ... [2020-10-28 18:01:13,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:01:13" (1/1) ... [2020-10-28 18:01:13,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:01:13" (1/1) ... [2020-10-28 18:01:13,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:01:13" (1/1) ... [2020-10-28 18:01:13,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:01:13" (1/1) ... [2020-10-28 18:01:13,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:01:13" (1/1) ... [2020-10-28 18:01:13,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:01:13" (1/1) ... [2020-10-28 18:01:13,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:01:13,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:01:13,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:01:13,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:01:13,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:01:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:01:13,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:01:13,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:01:13,939 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:01:13,940 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:01:13,940 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-28 18:01:13,941 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-28 18:01:13,941 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-28 18:01:13,941 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-28 18:01:13,941 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-28 18:01:13,941 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-28 18:01:13,942 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 18:01:13,943 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:01:13,943 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-28 18:01:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:01:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:01:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:01:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:01:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:01:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 18:01:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:01:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:01:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:01:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:01:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:01:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:01:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:01:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:01:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:01:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 18:01:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:01:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:01:13,947 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:01:13,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:01:13,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:01:13,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:01:13,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:01:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:01:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:01:16,458 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:01:16,458 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 18:01:16,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:01:16 BoogieIcfgContainer [2020-10-28 18:01:16,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:01:16,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:01:16,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:01:16,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:01:16,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:01:12" (1/3) ... [2020-10-28 18:01:16,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2e3126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:01:16, skipping insertion in model container [2020-10-28 18:01:16,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:01:13" (2/3) ... [2020-10-28 18:01:16,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2e3126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:01:16, skipping insertion in model container [2020-10-28 18:01:16,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:01:16" (3/3) ... [2020-10-28 18:01:16,471 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.UNBOUNDED.pals.c [2020-10-28 18:01:16,484 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:01:16,491 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:01:16,505 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:01:16,540 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:01:16,540 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:01:16,540 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:01:16,540 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:01:16,540 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:01:16,541 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:01:16,541 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:01:16,541 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:01:16,576 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states. [2020-10-28 18:01:16,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-28 18:01:16,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:01:16,608 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:01:16,609 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:01:16,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:01:16,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1235716565, now seen corresponding path program 1 times [2020-10-28 18:01:16,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:01:16,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19963125] [2020-10-28 18:01:16,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:01:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:17,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:18,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:18,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-28 18:01:18,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:18,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1100 [2020-10-28 18:01:18,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:18,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:18,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:18,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-28 18:01:18,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:18,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 18:01:19,387 WARN L193 SmtUtils]: Spent 978.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:01:19,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:01:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:19,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:19,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:19,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:01:19,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:19,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 18:01:19,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:19,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:19,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:19,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:01:19,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:19,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:19,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:01:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:19,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:19,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:19,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 18:01:19,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:19,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-28 18:01:19,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:19,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:19,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:19,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:01:19,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:19,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:19,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 18:01:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:19,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:19,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:19,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:01:19,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:19,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 18:01:19,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:19,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 18:01:19,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:19,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:19,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-28 18:01:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:19,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:19,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:19,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:19,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:19,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:01:19,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:19,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:19,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:19,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:01:19,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:19,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 18:01:19,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-28 18:01:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:19,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:19,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:19,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:19,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:20,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:01:20,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:20,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:20,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:20,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:01:20,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:20,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:20,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-28 18:01:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:20,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:20,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:20,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:20,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:20,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:01:20,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:20,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:20,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:20,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:01:20,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:20,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:20,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-28 18:01:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:20,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:20,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:20,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:20,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:20,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:01:20,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:20,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:20,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:20,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:01:20,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:20,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:20,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-28 18:01:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:20,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:20,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:20,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:20,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:20,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:01:20,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:20,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:20,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:20,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:01:20,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:20,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:20,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-28 18:01:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:20,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:20,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:20,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:01:20,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:20,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 18:01:20,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:20,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:20,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:20,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:01:20,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:20,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:20,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:01:20,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19963125] [2020-10-28 18:01:20,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:01:20,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:01:20,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162785970] [2020-10-28 18:01:20,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:01:20,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:01:20,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:01:20,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:01:20,388 INFO L87 Difference]: Start difference. First operand 766 states. Second operand 8 states. [2020-10-28 18:01:23,899 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:24,788 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:25,812 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:26,840 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:27,735 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:28,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:01:28,763 INFO L93 Difference]: Finished difference Result 1054 states and 1850 transitions. [2020-10-28 18:01:28,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:01:28,765 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 188 [2020-10-28 18:01:28,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:01:28,792 INFO L225 Difference]: With dead ends: 1054 [2020-10-28 18:01:28,792 INFO L226 Difference]: Without dead ends: 828 [2020-10-28 18:01:28,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-28 18:01:28,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-10-28 18:01:29,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 758. [2020-10-28 18:01:29,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 758 states. [2020-10-28 18:01:29,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1362 transitions. [2020-10-28 18:01:29,060 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1362 transitions. Word has length 188 [2020-10-28 18:01:29,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:01:29,061 INFO L481 AbstractCegarLoop]: Abstraction has 758 states and 1362 transitions. [2020-10-28 18:01:29,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:01:29,061 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1362 transitions. [2020-10-28 18:01:29,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-28 18:01:29,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:01:29,071 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:01:29,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:01:29,072 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:01:29,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:01:29,073 INFO L82 PathProgramCache]: Analyzing trace with hash -791815891, now seen corresponding path program 1 times [2020-10-28 18:01:29,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:01:29,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237788697] [2020-10-28 18:01:29,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:01:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:29,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:32,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:32,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-28 18:01:32,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:32,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2817 [2020-10-28 18:01:32,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:32,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:32,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 18:01:32,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 18:01:32,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 18:01:32,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:33,252 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:01:33,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:01:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:33,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:33,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:33,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:01:33,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:33,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 18:01:33,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:33,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:33,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:33,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:01:33,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:33,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:33,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:01:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:33,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:34,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:34,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 18:01:34,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:34,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-10-28 18:01:34,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:34,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:34,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:01:34,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:01:34,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 18:01:34,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:34,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 18:01:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:34,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:34,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:34,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:01:34,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:34,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:01:34,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:34,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:34,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:01:34,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 18:01:34,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:01:34,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:34,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-28 18:01:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:34,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:34,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:34,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:34,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:34,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:01:34,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:34,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:34,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:34,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:01:34,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:34,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:34,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-28 18:01:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:34,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:34,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:34,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:34,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:34,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:01:34,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:34,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:34,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:01:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:34,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:34,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-28 18:01:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:34,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:34,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:34,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:34,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:34,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:01:34,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:34,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:34,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:34,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:01:34,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:34,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:34,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-28 18:01:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:34,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:34,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:34,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:34,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:34,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:01:34,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:34,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:34,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:34,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:01:34,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:34,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:34,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-28 18:01:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:34,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:34,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:34,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:34,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:34,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:01:34,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:34,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:34,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:34,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:01:34,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:34,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:34,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-28 18:01:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:34,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:34,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:34,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:01:34,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:34,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 18:01:34,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:34,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:34,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:34,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:01:34,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:34,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:34,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:01:34,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237788697] [2020-10-28 18:01:34,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:01:34,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-28 18:01:34,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984574158] [2020-10-28 18:01:34,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 18:01:34,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:01:34,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 18:01:34,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-28 18:01:34,681 INFO L87 Difference]: Start difference. First operand 758 states and 1362 transitions. Second operand 14 states. [2020-10-28 18:01:44,810 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-28 18:01:45,948 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-28 18:01:47,229 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-28 18:01:48,329 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-28 18:01:49,410 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:50,302 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:51,250 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:52,209 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:53,111 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:54,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:01:54,266 INFO L93 Difference]: Finished difference Result 1049 states and 1838 transitions. [2020-10-28 18:01:54,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 18:01:54,266 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 188 [2020-10-28 18:01:54,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:01:54,273 INFO L225 Difference]: With dead ends: 1049 [2020-10-28 18:01:54,274 INFO L226 Difference]: Without dead ends: 828 [2020-10-28 18:01:54,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-28 18:01:54,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-10-28 18:01:54,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 758. [2020-10-28 18:01:54,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 758 states. [2020-10-28 18:01:54,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1317 transitions. [2020-10-28 18:01:54,457 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1317 transitions. Word has length 188 [2020-10-28 18:01:54,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:01:54,457 INFO L481 AbstractCegarLoop]: Abstraction has 758 states and 1317 transitions. [2020-10-28 18:01:54,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 18:01:54,458 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1317 transitions. [2020-10-28 18:01:54,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-28 18:01:54,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:01:54,463 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:01:54,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:01:54,463 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:01:54,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:01:54,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1469118581, now seen corresponding path program 1 times [2020-10-28 18:01:54,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:01:54,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135001303] [2020-10-28 18:01:54,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:01:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:54,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:55,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:55,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:57,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:58,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:59,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:59,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-28 18:01:59,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:01:59,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-28 18:01:59,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:59,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:59,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:01:59,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-28 18:01:59,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 18:01:59,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:02:00,835 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:02:00,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:02:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:00,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:00,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:00,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:02:00,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:00,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 18:02:00,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:00,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:00,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:02:00,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:00,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:02:00,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:00,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:02:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:00,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:01,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:01,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 18:02:01,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:01,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-28 18:02:01,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:01,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:01,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:01,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:01,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-28 18:02:01,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 18:02:01,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-28 18:02:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:01,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:01,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:01,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:02:01,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:01,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:02:01,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:01,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:01,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:01,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:02:01,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:02:01,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-28 18:02:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:01,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:01,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:01,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:02:01,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:01,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:02:01,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:01,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:01,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:01,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:01,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:02:01,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:02:01,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-28 18:02:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:01,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:01,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:01,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:02:01,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:01,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:02:01,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:01,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:01,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:01,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:01,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:02:01,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:02:01,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-28 18:02:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:01,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:01,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:01,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:02:01,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:01,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:02:01,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:01,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:01,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:01,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:01,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:02:01,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:02:01,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-28 18:02:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:01,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:01,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:01,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:02:01,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:01,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 18:02:01,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:01,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:02:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 18:02:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 18:02:01,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:02:01,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-28 18:02:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:01,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:01,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:01,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:02:01,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:01,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:02:01,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:01,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:01,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:02:01,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:02:01,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:02:01,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:01,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 18:02:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:01,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:01,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:01,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:02:01,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:01,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 18:02:01,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:01,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:01,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:02:01,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:02:01,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:02:01,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:02:02,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:02:02,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135001303] [2020-10-28 18:02:02,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:02:02,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 18:02:02,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16469249] [2020-10-28 18:02:02,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:02:02,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:02:02,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:02:02,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:02:02,010 INFO L87 Difference]: Start difference. First operand 758 states and 1317 transitions. Second operand 11 states. [2020-10-28 18:02:03,199 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-28 18:02:10,818 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-28 18:02:11,622 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-28 18:02:12,496 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-28 18:02:13,380 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:02:13,877 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:02:14,458 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-28 18:02:14,849 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:02:16,464 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:02:17,056 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:02:17,659 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:02:18,297 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 18:02:19,385 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 410 [2020-10-28 18:02:19,740 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 18:02:20,227 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:02:20,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:02:20,357 INFO L93 Difference]: Finished difference Result 1334 states and 2263 transitions. [2020-10-28 18:02:20,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 18:02:20,359 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 232 [2020-10-28 18:02:20,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:02:20,367 INFO L225 Difference]: With dead ends: 1334 [2020-10-28 18:02:20,367 INFO L226 Difference]: Without dead ends: 1119 [2020-10-28 18:02:20,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2020-10-28 18:02:20,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2020-10-28 18:02:20,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 972. [2020-10-28 18:02:20,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 972 states. [2020-10-28 18:02:20,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1670 transitions. [2020-10-28 18:02:20,542 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1670 transitions. Word has length 232 [2020-10-28 18:02:20,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:02:20,543 INFO L481 AbstractCegarLoop]: Abstraction has 972 states and 1670 transitions. [2020-10-28 18:02:20,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 18:02:20,543 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1670 transitions. [2020-10-28 18:02:20,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-28 18:02:20,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:02:20,549 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:02:20,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:02:20,549 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:02:20,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:02:20,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1781390947, now seen corresponding path program 1 times [2020-10-28 18:02:20,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:02:20,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482786106] [2020-10-28 18:02:20,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:02:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:20,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:21,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:21,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:21,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:25,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:25,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-28 18:02:25,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 18:02:25,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-28 18:02:25,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:25,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:25,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:02:25,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:02:25,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-28 18:02:25,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:27,070 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:02:27,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:02:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:27,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:27,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:27,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:02:27,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:27,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 18:02:27,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:27,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:27,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:02:27,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:27,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:02:27,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:02:27,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:02:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:27,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:27,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:27,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 18:02:27,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:27,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-28 18:02:27,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:27,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:27,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:02:27,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:27,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 18:02:27,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:27,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-28 18:02:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:27,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:27,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:27,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:02:27,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:27,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 18:02:27,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:27,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:27,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:27,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:27,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:02:27,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:02:27,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-28 18:02:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:27,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:27,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:27,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:02:27,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:27,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:02:27,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:27,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:27,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:27,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:27,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:02:27,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:02:27,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-28 18:02:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:27,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:27,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:27,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:02:27,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:27,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:02:27,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:27,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:27,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:27,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:27,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:02:27,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:28,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-28 18:02:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:28,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:28,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:28,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:02:28,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:28,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:02:28,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:28,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:28,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:28,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:28,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:02:28,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:02:28,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-28 18:02:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:28,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:28,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:28,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 18:02:28,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:28,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 18:02:28,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:28,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:02:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:02:28,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:02:28,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-28 18:02:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:28,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:28,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:28,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:02:28,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:28,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 18:02:28,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:28,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:28,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:02:28,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:02:28,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:02:28,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:28,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-28 18:02:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:28,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:28,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:28,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:02:28,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:28,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 18:02:28,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:28,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:28,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:02:28,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:02:28,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:02:28,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:02:28,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:02:28,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482786106] [2020-10-28 18:02:28,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:02:28,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 18:02:28,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530244092] [2020-10-28 18:02:28,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:02:28,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:02:28,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:02:28,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:02:28,640 INFO L87 Difference]: Start difference. First operand 972 states and 1670 transitions. Second operand 11 states. [2020-10-28 18:02:29,822 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-28 18:02:31,067 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 410 [2020-10-28 18:02:32,911 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-28 18:02:35,238 WARN L193 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 412 DAG size of output: 408 [2020-10-28 18:02:53,932 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-28 18:02:54,469 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:02:54,937 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:02:55,788 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:02:56,216 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:02:57,005 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:02:58,277 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:02:58,691 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:02:59,464 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:03:00,823 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:03:01,511 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:03:02,172 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:03:03,392 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:03:04,325 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:03:04,754 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:03:05,452 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:03:07,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:03:07,226 INFO L93 Difference]: Finished difference Result 3961 states and 6793 transitions. [2020-10-28 18:03:07,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 18:03:07,227 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 236 [2020-10-28 18:03:07,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:03:07,245 INFO L225 Difference]: With dead ends: 3961 [2020-10-28 18:03:07,246 INFO L226 Difference]: Without dead ends: 3066 [2020-10-28 18:03:07,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-28 18:03:07,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2020-10-28 18:03:07,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 2694. [2020-10-28 18:03:07,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2694 states. [2020-10-28 18:03:07,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 4618 transitions. [2020-10-28 18:03:07,739 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 4618 transitions. Word has length 236 [2020-10-28 18:03:07,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:03:07,740 INFO L481 AbstractCegarLoop]: Abstraction has 2694 states and 4618 transitions. [2020-10-28 18:03:07,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 18:03:07,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 4618 transitions. [2020-10-28 18:03:07,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-28 18:03:07,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:03:07,749 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:03:07,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:03:07,749 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:03:07,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:03:07,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1124914711, now seen corresponding path program 1 times [2020-10-28 18:03:07,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:03:07,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788811820] [2020-10-28 18:03:07,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:03:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:07,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:08,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:08,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:08,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:12,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:12,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 18:03:12,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 18:03:12,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 18:03:12,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:12,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:12,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:03:12,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:03:12,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 215 [2020-10-28 18:03:12,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:14,168 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:03:14,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:03:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:14,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:14,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:14,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:03:14,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:14,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 18:03:14,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:14,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:14,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:14,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:14,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:14,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:14,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:03:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:14,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:14,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:14,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 18:03:14,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:14,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-28 18:03:14,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:14,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:14,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:03:14,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:14,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 18:03:14,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:14,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-28 18:03:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:14,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:14,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:14,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:03:14,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:14,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 18:03:14,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:14,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:14,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:14,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:14,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:03:14,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:14,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-28 18:03:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:14,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:14,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:14,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:14,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:14,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:03:14,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:14,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:14,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:14,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:14,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:03:14,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:15,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-28 18:03:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:15,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:15,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:15,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:15,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:15,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:03:15,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:15,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:03:15,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:15,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-28 18:03:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:15,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:15,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:15,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:15,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:15,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:03:15,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:15,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:15,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:15,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:03:15,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:03:15,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-28 18:03:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:15,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:15,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:15,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 18:03:15,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:15,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:03:15,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:15,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:15,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:15,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:03:15,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 18:03:15,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:15,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-28 18:03:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:15,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:15,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:15,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:15,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:15,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 18:03:15,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:15,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:15,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:15,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:03:15,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:15,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:15,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-28 18:03:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:15,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:15,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:15,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:03:15,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:15,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 18:03:15,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:15,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:15,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:15,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:03:15,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:15,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:03:15,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:03:15,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788811820] [2020-10-28 18:03:15,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:03:15,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 18:03:15,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969935800] [2020-10-28 18:03:15,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:03:15,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:03:15,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:03:15,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:03:15,553 INFO L87 Difference]: Start difference. First operand 2694 states and 4618 transitions. Second operand 11 states. [2020-10-28 18:03:16,716 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-28 18:03:17,850 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 411 [2020-10-28 18:03:19,120 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-28 18:03:21,334 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 413 DAG size of output: 411 [2020-10-28 18:03:42,359 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-28 18:03:43,093 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:03:43,489 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:03:44,383 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:03:45,043 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:03:45,750 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:03:47,040 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:03:47,792 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:03:48,569 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:03:49,763 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:03:50,792 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:03:51,418 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:03:52,491 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:03:53,835 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:03:54,220 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:03:54,743 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:03:57,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:03:57,269 INFO L93 Difference]: Finished difference Result 11345 states and 19428 transitions. [2020-10-28 18:03:57,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 18:03:57,273 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 237 [2020-10-28 18:03:57,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:03:57,319 INFO L225 Difference]: With dead ends: 11345 [2020-10-28 18:03:57,319 INFO L226 Difference]: Without dead ends: 8814 [2020-10-28 18:03:57,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-28 18:03:57,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8814 states. [2020-10-28 18:03:59,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8814 to 7794. [2020-10-28 18:03:59,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7794 states. [2020-10-28 18:03:59,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7794 states to 7794 states and 13326 transitions. [2020-10-28 18:03:59,154 INFO L78 Accepts]: Start accepts. Automaton has 7794 states and 13326 transitions. Word has length 237 [2020-10-28 18:03:59,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:03:59,154 INFO L481 AbstractCegarLoop]: Abstraction has 7794 states and 13326 transitions. [2020-10-28 18:03:59,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 18:03:59,155 INFO L276 IsEmpty]: Start isEmpty. Operand 7794 states and 13326 transitions. [2020-10-28 18:03:59,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-28 18:03:59,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:03:59,179 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:03:59,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:03:59,180 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:03:59,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:03:59,181 INFO L82 PathProgramCache]: Analyzing trace with hash 568202648, now seen corresponding path program 1 times [2020-10-28 18:03:59,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:03:59,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838343215] [2020-10-28 18:03:59,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:03:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:59,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:59,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:59,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:00,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:04,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:04,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:04,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-28 18:04:04,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:04:04,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-28 18:04:04,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:04,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:04:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:04:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-28 18:04:04,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:05,545 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:04:05,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:04:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:05,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:05,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:05,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:04:05,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:05,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 18:04:05,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:05,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:05,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:04:05,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:05,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:04:05,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:05,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:04:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:05,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:05,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:05,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 18:04:05,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:05,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-28 18:04:05,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:05,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:05,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:04:05,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:05,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 18:04:05,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:06,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-28 18:04:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:06,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:06,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:06,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:04:06,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:06,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 18:04:06,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:06,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:06,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:06,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:06,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:04:06,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:06,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-28 18:04:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:06,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:06,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:06,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:04:06,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:06,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 18:04:06,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:06,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:06,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:06,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:06,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:04:06,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:06,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-28 18:04:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:06,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:06,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:06,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:04:06,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:06,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 18:04:06,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:06,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:06,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:06,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:06,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:04:06,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:06,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-28 18:04:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:06,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:06,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:06,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:04:06,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:06,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:04:06,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:06,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:06,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:06,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:06,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:04:06,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:06,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-28 18:04:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:06,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:06,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:06,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 18:04:06,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:06,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:04:06,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:06,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:06,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:06,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 18:04:06,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 18:04:06,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:06,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-28 18:04:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:06,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:06,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:06,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:04:06,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:06,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 18:04:06,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:06,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:06,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:04:06,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:04:06,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:04:06,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:06,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-28 18:04:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:06,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:06,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:06,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:04:06,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:06,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 18:04:06,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:06,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:06,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:04:06,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:04:06,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:04:06,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:06,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:04:06,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838343215] [2020-10-28 18:04:06,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:04:06,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 18:04:06,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969888113] [2020-10-28 18:04:06,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:04:06,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:04:06,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:04:06,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:04:06,686 INFO L87 Difference]: Start difference. First operand 7794 states and 13326 transitions. Second operand 11 states. [2020-10-28 18:04:07,896 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-28 18:04:09,081 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 410 [2020-10-28 18:04:10,855 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-28 18:04:13,107 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 412 DAG size of output: 408 [2020-10-28 18:04:36,546 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-28 18:04:37,278 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:04:37,814 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:04:38,855 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:04:39,271 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:04:40,111 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:04:41,663 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:04:42,137 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:04:43,047 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:04:44,568 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:04:45,316 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:04:46,134 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:04:47,452 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:04:48,747 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:04:49,267 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:04:49,695 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:04:52,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:04:52,617 INFO L93 Difference]: Finished difference Result 33169 states and 56612 transitions. [2020-10-28 18:04:52,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 18:04:52,622 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 238 [2020-10-28 18:04:52,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:04:52,752 INFO L225 Difference]: With dead ends: 33169 [2020-10-28 18:04:52,753 INFO L226 Difference]: Without dead ends: 25710 [2020-10-28 18:04:52,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-28 18:04:52,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25710 states.