/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-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:20:37,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:20:37,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:20:37,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:20:37,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:20:37,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:20:37,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:20:37,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:20:37,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:20:37,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:20:37,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:20:37,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:20:37,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:20:37,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:20:37,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:20:37,739 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:20:37,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:20:37,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:20:37,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:20:37,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:20:37,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:20:37,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:20:37,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:20:37,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:20:37,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:20:37,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:20:37,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:20:37,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:20:37,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:20:37,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:20:37,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:20:37,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:20:37,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:20:37,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:20:37,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:20:37,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:20:37,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:20:37,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:20:37,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:20:37,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:20:37,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:20:37,774 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 18:20:37,808 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:20:37,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:20:37,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:20:37,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:20:37,811 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:20:37,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:20:37,811 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:20:37,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:20:37,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:20:37,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:20:37,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:20:37,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:20:37,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:20:37,812 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:20:37,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:20:37,813 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:20:37,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:20:37,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:20:37,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:20:37,814 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:20:37,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:20:37,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:20:37,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:20:37,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:20:37,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:20:37,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:20:37,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:20:37,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:20:37,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:20:37,816 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:20:38,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:20:38,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:20:38,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:20:38,210 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:20:38,210 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:20:38,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 18:20:38,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81bdf7003/1c46cade4a95443e91adb5be99f90aa0/FLAG83dda519b [2020-10-28 18:20:39,147 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:20:39,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 18:20:39,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81bdf7003/1c46cade4a95443e91adb5be99f90aa0/FLAG83dda519b [2020-10-28 18:20:39,294 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81bdf7003/1c46cade4a95443e91adb5be99f90aa0 [2020-10-28 18:20:39,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:20:39,309 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:20:39,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:20:39,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:20:39,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:20:39,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:20:39" (1/1) ... [2020-10-28 18:20:39,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8a7d1dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:20:39, skipping insertion in model container [2020-10-28 18:20:39,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:20:39" (1/1) ... [2020-10-28 18:20:39,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:20:39,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:20:40,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:20:40,479 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:20:40,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:20:40,954 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:20:40,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:20:40 WrapperNode [2020-10-28 18:20:40,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:20:40,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:20:40,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:20:40,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:20:40,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:20:40" (1/1) ... [2020-10-28 18:20:40,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:20:40" (1/1) ... [2020-10-28 18:20:41,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:20:40" (1/1) ... [2020-10-28 18:20:41,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:20:40" (1/1) ... [2020-10-28 18:20:41,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:20:40" (1/1) ... [2020-10-28 18:20:41,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:20:40" (1/1) ... [2020-10-28 18:20:41,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:20:40" (1/1) ... [2020-10-28 18:20:41,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:20:41,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:20:41,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:20:41,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:20:41,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:20:40" (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 18:20:41,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:20:41,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:20:41,245 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:20:41,245 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:20:41,245 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:20:41,246 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:20:41,246 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:20:41,246 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:20:41,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:20:41,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:20:41,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 18:20:41,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:20:41,247 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:20:41,247 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:20:41,247 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:20:41,247 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:20:41,248 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:20:41,248 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:20:41,248 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:20:41,248 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:20:41,248 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:20:41,248 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:20:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:20:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:20:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:20:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:20:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:20:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:20:41,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:20:44,222 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:20:44,225 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:20:44,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:20:44 BoogieIcfgContainer [2020-10-28 18:20:44,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:20:44,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:20:44,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:20:44,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:20:44,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:20:39" (1/3) ... [2020-10-28 18:20:44,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330abc36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:20:44, skipping insertion in model container [2020-10-28 18:20:44,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:20:40" (2/3) ... [2020-10-28 18:20:44,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330abc36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:20:44, skipping insertion in model container [2020-10-28 18:20:44,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:20:44" (3/3) ... [2020-10-28 18:20:44,238 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 18:20:44,250 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:20:44,256 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:20:44,270 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:20:44,302 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:20:44,302 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:20:44,302 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:20:44,302 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:20:44,303 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:20:44,303 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:20:44,303 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:20:44,303 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:20:44,335 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states. [2020-10-28 18:20:44,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-28 18:20:44,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:20:44,366 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:20:44,366 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:20:44,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:20:44,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1786268820, now seen corresponding path program 1 times [2020-10-28 18:20:44,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:20:44,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238856467] [2020-10-28 18:20:44,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:20:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:20:45,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:20:46,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:20:46,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:20:47,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:20:47,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:20:47,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:20:48,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:20:48,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:20:48,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:20:48,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:20:49,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:20:49,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:20:49,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:20:49,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:20:50,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:20:50,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-28 18:20:50,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:20:50,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-28 18:20:50,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:20:50,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:20:50,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:20:50,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:20:50,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-28 18:20:50,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 18:20:51,399 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 18:20:51,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:20:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:20:51,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:20:51,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:20:51,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:20:51,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:20:51,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 18:20:51,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:20:51,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:20:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:20:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:20:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:20:51,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:20:51,747 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 18:20:51,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238856467] [2020-10-28 18:20:51,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:20:51,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:20:51,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371723246] [2020-10-28 18:20:51,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:20:51,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:20:51,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:20:51,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:20:51,782 INFO L87 Difference]: Start difference. First operand 725 states. Second operand 5 states. [2020-10-28 18:20:59,768 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 18:21:01,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:21:01,615 INFO L93 Difference]: Finished difference Result 2085 states and 3719 transitions. [2020-10-28 18:21:01,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:21:01,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 311 [2020-10-28 18:21:01,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:21:01,644 INFO L225 Difference]: With dead ends: 2085 [2020-10-28 18:21:01,645 INFO L226 Difference]: Without dead ends: 1385 [2020-10-28 18:21:01,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:21:01,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2020-10-28 18:21:01,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1382. [2020-10-28 18:21:01,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1382 states. [2020-10-28 18:21:01,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 2123 transitions. [2020-10-28 18:21:01,823 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 2123 transitions. Word has length 311 [2020-10-28 18:21:01,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:21:01,826 INFO L481 AbstractCegarLoop]: Abstraction has 1382 states and 2123 transitions. [2020-10-28 18:21:01,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:21:01,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 2123 transitions. [2020-10-28 18:21:01,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-28 18:21:01,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:21:01,847 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:01,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:21:01,848 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:21:01,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:21:01,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1125919478, now seen corresponding path program 1 times [2020-10-28 18:21:01,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:21:01,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454063230] [2020-10-28 18:21:01,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:21:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:21:02,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:02,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:02,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:02,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:02,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:02,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:03,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:03,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:03,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:03,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:03,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:03,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:04,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:04,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:04,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:06,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:21:06,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-28 18:21:06,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 18:21:06,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 18:21:06,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:21:06,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:21:06,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:21:06,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 18:21:06,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-28 18:21:06,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:21:07,903 WARN L193 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 18:21:07,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:21:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:21:07,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:07,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:21:07,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:21:07,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:21:07,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 18:21:07,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:21:07,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:21:07,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:21:07,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:21:07,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:21:07,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:21:08,217 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 18:21:08,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454063230] [2020-10-28 18:21:08,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:21:08,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:21:08,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876756119] [2020-10-28 18:21:08,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:21:08,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:21:08,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:21:08,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:21:08,223 INFO L87 Difference]: Start difference. First operand 1382 states and 2123 transitions. Second operand 4 states. [2020-10-28 18:21:15,422 WARN L193 SmtUtils]: Spent 678.00 ms on a formula simplification that was a NOOP. DAG size: 300 [2020-10-28 18:21:17,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:21:17,210 INFO L93 Difference]: Finished difference Result 3975 states and 6079 transitions. [2020-10-28 18:21:17,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:21:17,211 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 313 [2020-10-28 18:21:17,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:21:17,228 INFO L225 Difference]: With dead ends: 3975 [2020-10-28 18:21:17,228 INFO L226 Difference]: Without dead ends: 2692 [2020-10-28 18:21:17,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:21:17,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2020-10-28 18:21:17,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 2689. [2020-10-28 18:21:17,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2689 states. [2020-10-28 18:21:17,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2689 states to 2689 states and 4105 transitions. [2020-10-28 18:21:17,384 INFO L78 Accepts]: Start accepts. Automaton has 2689 states and 4105 transitions. Word has length 313 [2020-10-28 18:21:17,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:21:17,385 INFO L481 AbstractCegarLoop]: Abstraction has 2689 states and 4105 transitions. [2020-10-28 18:21:17,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:21:17,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2689 states and 4105 transitions. [2020-10-28 18:21:17,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-28 18:21:17,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:21:17,395 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:17,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:21:17,396 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:21:17,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:21:17,397 INFO L82 PathProgramCache]: Analyzing trace with hash -969255515, now seen corresponding path program 1 times [2020-10-28 18:21:17,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:21:17,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025798632] [2020-10-28 18:21:17,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:21:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:21:17,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:17,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:17,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:17,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:17,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:18,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:18,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:18,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:18,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:18,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:18,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:19,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:19,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:19,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:22,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:21:22,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-28 18:21:22,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:21:22,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-28 18:21:22,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:21:22,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:21:22,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:21:22,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:21:22,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-28 18:21:22,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:21:23,339 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 18:21:23,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:21:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:21:23,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:23,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:21:23,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:21:23,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:21:23,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 18:21:23,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:21:23,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:21:23,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:21:23,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:21:23,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:21:23,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:21:23,755 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 18:21:23,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025798632] [2020-10-28 18:21:23,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:21:23,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:21:23,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886338688] [2020-10-28 18:21:23,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:21:23,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:21:23,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:21:23,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:21:23,766 INFO L87 Difference]: Start difference. First operand 2689 states and 4105 transitions. Second operand 5 states. [2020-10-28 18:21:30,296 WARN L193 SmtUtils]: Spent 678.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 18:21:32,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:21:32,257 INFO L93 Difference]: Finished difference Result 7972 states and 12162 transitions. [2020-10-28 18:21:32,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:21:32,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 313 [2020-10-28 18:21:32,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:21:32,288 INFO L225 Difference]: With dead ends: 7972 [2020-10-28 18:21:32,289 INFO L226 Difference]: Without dead ends: 5296 [2020-10-28 18:21:32,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:21:32,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5296 states. [2020-10-28 18:21:32,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5296 to 5293. [2020-10-28 18:21:32,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5293 states. [2020-10-28 18:21:32,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5293 states to 5293 states and 8030 transitions. [2020-10-28 18:21:32,593 INFO L78 Accepts]: Start accepts. Automaton has 5293 states and 8030 transitions. Word has length 313 [2020-10-28 18:21:32,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:21:32,594 INFO L481 AbstractCegarLoop]: Abstraction has 5293 states and 8030 transitions. [2020-10-28 18:21:32,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:21:32,595 INFO L276 IsEmpty]: Start isEmpty. Operand 5293 states and 8030 transitions. [2020-10-28 18:21:32,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-28 18:21:32,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:21:32,611 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:32,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:21:32,611 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:21:32,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:21:32,612 INFO L82 PathProgramCache]: Analyzing trace with hash 196969173, now seen corresponding path program 1 times [2020-10-28 18:21:32,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:21:32,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386845963] [2020-10-28 18:21:32,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:21:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:21:32,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:32,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:32,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:33,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:33,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:33,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:33,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:34,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:34,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:34,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:34,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:34,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:34,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:34,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:37,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:21:37,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-28 18:21:37,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:21:37,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 18:21:37,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:21:37,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:21:37,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:21:37,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:21:37,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-28 18:21:37,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:21:38,482 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 18:21:38,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:21:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:21:38,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:38,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:21:38,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:21:38,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:21:38,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:21:38,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:21:38,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:21:38,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:21:38,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:21:38,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:21:38,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:21:38,761 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 18:21:38,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386845963] [2020-10-28 18:21:38,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:21:38,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:21:38,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288648422] [2020-10-28 18:21:38,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:21:38,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:21:38,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:21:38,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:21:38,765 INFO L87 Difference]: Start difference. First operand 5293 states and 8030 transitions. Second operand 5 states. [2020-10-28 18:21:45,579 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 18:21:47,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:21:47,382 INFO L93 Difference]: Finished difference Result 15699 states and 23795 transitions. [2020-10-28 18:21:47,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:21:47,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 315 [2020-10-28 18:21:47,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:21:47,433 INFO L225 Difference]: With dead ends: 15699 [2020-10-28 18:21:47,433 INFO L226 Difference]: Without dead ends: 10429 [2020-10-28 18:21:47,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:21:47,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10429 states. [2020-10-28 18:21:47,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10429 to 10426. [2020-10-28 18:21:47,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10426 states. [2020-10-28 18:21:47,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10426 states to 10426 states and 15712 transitions. [2020-10-28 18:21:47,960 INFO L78 Accepts]: Start accepts. Automaton has 10426 states and 15712 transitions. Word has length 315 [2020-10-28 18:21:47,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:21:47,960 INFO L481 AbstractCegarLoop]: Abstraction has 10426 states and 15712 transitions. [2020-10-28 18:21:47,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:21:47,960 INFO L276 IsEmpty]: Start isEmpty. Operand 10426 states and 15712 transitions. [2020-10-28 18:21:47,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-28 18:21:47,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:21:47,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:47,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:21:47,986 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:21:47,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:21:47,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1328168488, now seen corresponding path program 1 times [2020-10-28 18:21:47,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:21:47,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499303197] [2020-10-28 18:21:47,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:21:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:21:48,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:48,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:48,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:48,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:48,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:48,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:48,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:48,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:48,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:48,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:49,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:49,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:49,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:51,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:51,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:51,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:53,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:21:53,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-28 18:21:53,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 18:21:53,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 18:21:53,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:21:53,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:21:53,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:21:53,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 18:21:53,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-28 18:21:53,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:21:53,781 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 18:21:53,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:21:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:21:53,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:53,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:21:53,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:21:53,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:21:53,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:21:53,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:21:53,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:21:53,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:21:53,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:21:53,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:21:53,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:21:53,936 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 18:21:53,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499303197] [2020-10-28 18:21:53,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:21:53,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:21:53,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544967138] [2020-10-28 18:21:53,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:21:53,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:21:53,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:21:53,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:21:53,939 INFO L87 Difference]: Start difference. First operand 10426 states and 15712 transitions. Second operand 4 states. [2020-10-28 18:22:01,737 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 300 [2020-10-28 18:22:03,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:22:03,635 INFO L93 Difference]: Finished difference Result 30122 states and 45180 transitions. [2020-10-28 18:22:03,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:22:03,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 317 [2020-10-28 18:22:03,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:22:03,701 INFO L225 Difference]: With dead ends: 30122 [2020-10-28 18:22:03,702 INFO L226 Difference]: Without dead ends: 20335 [2020-10-28 18:22:03,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:22:03,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20335 states. [2020-10-28 18:22:04,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20335 to 20332. [2020-10-28 18:22:04,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20332 states. [2020-10-28 18:22:04,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20332 states to 20332 states and 30408 transitions. [2020-10-28 18:22:04,705 INFO L78 Accepts]: Start accepts. Automaton has 20332 states and 30408 transitions. Word has length 317 [2020-10-28 18:22:04,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:22:04,706 INFO L481 AbstractCegarLoop]: Abstraction has 20332 states and 30408 transitions. [2020-10-28 18:22:04,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:22:04,706 INFO L276 IsEmpty]: Start isEmpty. Operand 20332 states and 30408 transitions. [2020-10-28 18:22:04,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-28 18:22:04,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:22:04,749 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:22:04,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:22:04,750 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:22:04,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:22:04,750 INFO L82 PathProgramCache]: Analyzing trace with hash -775358141, now seen corresponding path program 1 times [2020-10-28 18:22:04,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:22:04,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519434324] [2020-10-28 18:22:04,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:22:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:22:04,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:04,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:04,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:05,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:05,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:05,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:05,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:05,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:05,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:05,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:05,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:06,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:06,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:06,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:09,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:22:09,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-28 18:22:09,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:22:09,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 18:22:09,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:22:09,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:22:09,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:22:09,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 18:22:09,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-28 18:22:09,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:22:10,568 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 18:22:10,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:22:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:22:10,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:10,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:22:10,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:22:10,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:22:10,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 18:22:10,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:22:10,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:22:10,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:22:10,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:22:10,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:22:10,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:22:10,741 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 18:22:10,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519434324] [2020-10-28 18:22:10,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:22:10,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:22:10,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718147932] [2020-10-28 18:22:10,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:22:10,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:22:10,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:22:10,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:22:10,744 INFO L87 Difference]: Start difference. First operand 20332 states and 30408 transitions. Second operand 4 states. [2020-10-28 18:22:18,804 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 300 [2020-10-28 18:22:20,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:22:20,678 INFO L93 Difference]: Finished difference Result 58746 states and 87408 transitions. [2020-10-28 18:22:20,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:22:20,679 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 317 [2020-10-28 18:22:20,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:22:20,766 INFO L225 Difference]: With dead ends: 58746 [2020-10-28 18:22:20,766 INFO L226 Difference]: Without dead ends: 39819 [2020-10-28 18:22:20,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:22:20,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39819 states. [2020-10-28 18:22:22,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39819 to 39816. [2020-10-28 18:22:22,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39816 states. [2020-10-28 18:22:22,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39816 states to 39816 states and 59090 transitions. [2020-10-28 18:22:22,762 INFO L78 Accepts]: Start accepts. Automaton has 39816 states and 59090 transitions. Word has length 317 [2020-10-28 18:22:22,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:22:22,763 INFO L481 AbstractCegarLoop]: Abstraction has 39816 states and 59090 transitions. [2020-10-28 18:22:22,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:22:22,763 INFO L276 IsEmpty]: Start isEmpty. Operand 39816 states and 59090 transitions. [2020-10-28 18:22:22,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-28 18:22:22,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:22:22,857 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:22:22,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:22:22,857 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:22:22,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:22:22,858 INFO L82 PathProgramCache]: Analyzing trace with hash 571387614, now seen corresponding path program 1 times [2020-10-28 18:22:22,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:22:22,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797107535] [2020-10-28 18:22:22,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:22:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:22:22,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:22,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:22,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:23,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:23,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:23,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:23,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:24,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:24,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:24,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:24,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:24,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:24,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:25,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:26,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:26,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:27,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:27,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:27,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:22:27,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-28 18:22:27,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 18:22:27,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 18:22:27,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:22:27,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:22:27,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:22:27,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:22:27,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 18:22:27,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:22:28,721 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 18:22:28,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:22:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:22:28,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:28,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:22:28,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:22:28,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:22:28,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:22:28,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:22:28,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:22:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:22:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:22:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:22:28,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:22:28,908 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 18:22:28,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797107535] [2020-10-28 18:22:28,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:22:28,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:22:28,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636014207] [2020-10-28 18:22:28,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:22:28,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:22:28,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:22:28,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:22:28,911 INFO L87 Difference]: Start difference. First operand 39816 states and 59090 transitions. Second operand 5 states. [2020-10-28 18:22:36,014 WARN L193 SmtUtils]: Spent 647.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 18:22:38,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:22:38,116 INFO L93 Difference]: Finished difference Result 84786 states and 125959 transitions. [2020-10-28 18:22:38,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:22:38,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 317 [2020-10-28 18:22:38,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:22:38,185 INFO L225 Difference]: With dead ends: 84786 [2020-10-28 18:22:38,185 INFO L226 Difference]: Without dead ends: 45280 [2020-10-28 18:22:38,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:22:38,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45280 states. [2020-10-28 18:22:40,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45280 to 39983. [2020-10-28 18:22:40,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39983 states. [2020-10-28 18:22:40,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39983 states to 39983 states and 59316 transitions. [2020-10-28 18:22:40,113 INFO L78 Accepts]: Start accepts. Automaton has 39983 states and 59316 transitions. Word has length 317 [2020-10-28 18:22:40,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:22:40,114 INFO L481 AbstractCegarLoop]: Abstraction has 39983 states and 59316 transitions. [2020-10-28 18:22:40,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:22:40,114 INFO L276 IsEmpty]: Start isEmpty. Operand 39983 states and 59316 transitions. [2020-10-28 18:22:40,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-28 18:22:40,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:22:40,149 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:22:40,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:22:40,150 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:22:40,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:22:40,150 INFO L82 PathProgramCache]: Analyzing trace with hash -610146251, now seen corresponding path program 1 times [2020-10-28 18:22:40,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:22:40,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27264663] [2020-10-28 18:22:40,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:22:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:22:40,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:40,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:40,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:40,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:40,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:40,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:40,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:40,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:40,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:41,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:41,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:41,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:41,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:45,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:22:45,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-28 18:22:45,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:22:45,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-28 18:22:45,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:22:45,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:22:45,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:22:45,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:22:45,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-28 18:22:45,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:22:46,050 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 18:22:46,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:22:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:22:46,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:46,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:22:46,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:22:46,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:22:46,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:22:46,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:22:46,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:22:46,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:22:46,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:22:46,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:22:46,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:22:46,202 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 18:22:46,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27264663] [2020-10-28 18:22:46,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:22:46,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:22:46,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845763335] [2020-10-28 18:22:46,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:22:46,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:22:46,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:22:46,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:22:46,204 INFO L87 Difference]: Start difference. First operand 39983 states and 59316 transitions. Second operand 5 states. [2020-10-28 18:22:54,404 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 18:22:56,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:22:56,755 INFO L93 Difference]: Finished difference Result 116747 states and 172672 transitions. [2020-10-28 18:22:56,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:22:56,756 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 319 [2020-10-28 18:22:56,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:22:56,990 INFO L225 Difference]: With dead ends: 116747 [2020-10-28 18:22:56,991 INFO L226 Difference]: Without dead ends: 77732 [2020-10-28 18:22:57,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:22:57,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77732 states. [2020-10-28 18:23:00,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77732 to 77729. [2020-10-28 18:23:00,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77729 states. [2020-10-28 18:23:00,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77729 states to 77729 states and 114166 transitions. [2020-10-28 18:23:00,666 INFO L78 Accepts]: Start accepts. Automaton has 77729 states and 114166 transitions. Word has length 319 [2020-10-28 18:23:00,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:23:00,666 INFO L481 AbstractCegarLoop]: Abstraction has 77729 states and 114166 transitions. [2020-10-28 18:23:00,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:23:00,666 INFO L276 IsEmpty]: Start isEmpty. Operand 77729 states and 114166 transitions. [2020-10-28 18:23:00,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-28 18:23:00,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:23:00,739 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:23:00,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:23:00,740 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:23:00,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:23:00,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1737995061, now seen corresponding path program 1 times [2020-10-28 18:23:00,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:23:00,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970840641] [2020-10-28 18:23:00,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:23:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:23:00,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:00,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:01,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:01,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:01,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:01,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:01,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:01,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:01,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:01,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:01,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:01,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:01,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:01,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:05,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:23:05,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-28 18:23:05,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:23:05,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 18:23:05,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:23:05,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:23:05,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:23:05,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:23:05,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 18:23:05,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:23:06,866 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 18:23:06,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:23:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:23:06,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:06,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:23:06,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:23:06,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:23:06,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:23:06,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:23:06,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:23:06,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:23:06,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:23:06,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:23:06,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:23:07,066 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 18:23:07,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970840641] [2020-10-28 18:23:07,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:23:07,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:23:07,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393349694] [2020-10-28 18:23:07,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:23:07,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:23:07,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:23:07,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:23:07,069 INFO L87 Difference]: Start difference. First operand 77729 states and 114166 transitions. Second operand 5 states. [2020-10-28 18:23:18,924 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 18:23:22,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:23:22,850 INFO L93 Difference]: Finished difference Result 224417 states and 327974 transitions. [2020-10-28 18:23:22,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:23:22,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 321 [2020-10-28 18:23:22,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:23:23,063 INFO L225 Difference]: With dead ends: 224417 [2020-10-28 18:23:23,064 INFO L226 Difference]: Without dead ends: 151214 [2020-10-28 18:23:23,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:23:23,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151214 states. [2020-10-28 18:23:31,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151214 to 151211. [2020-10-28 18:23:31,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151211 states. [2020-10-28 18:23:31,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151211 states to 151211 states and 220168 transitions. [2020-10-28 18:23:31,658 INFO L78 Accepts]: Start accepts. Automaton has 151211 states and 220168 transitions. Word has length 321 [2020-10-28 18:23:31,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:23:31,658 INFO L481 AbstractCegarLoop]: Abstraction has 151211 states and 220168 transitions. [2020-10-28 18:23:31,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:23:31,659 INFO L276 IsEmpty]: Start isEmpty. Operand 151211 states and 220168 transitions. [2020-10-28 18:23:31,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-28 18:23:31,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:23:31,778 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:23:31,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:23:31,779 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:23:31,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:23:31,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1824406560, now seen corresponding path program 1 times [2020-10-28 18:23:31,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:23:31,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694211942] [2020-10-28 18:23:31,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:23:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:23:31,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:31,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:31,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:32,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:32,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:32,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:32,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:32,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:32,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:32,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:32,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:32,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:36,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:36,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:36,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:23:36,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-28 18:23:36,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:23:36,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 18:23:36,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:23:36,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:23:36,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:23:36,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:23:36,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-28 18:23:36,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:23:37,618 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 18:23:37,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:23:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:23:37,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:37,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:23:37,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:23:37,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:23:37,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 18:23:37,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:23:37,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:23:37,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:23:37,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:23:37,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:23:37,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:23:37,788 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 18:23:37,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694211942] [2020-10-28 18:23:37,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:23:37,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:23:37,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513295012] [2020-10-28 18:23:37,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:23:37,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:23:37,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:23:37,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:23:37,791 INFO L87 Difference]: Start difference. First operand 151211 states and 220168 transitions. Second operand 5 states. [2020-10-28 18:23:57,158 WARN L193 SmtUtils]: Spent 812.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 18:24:03,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:24:03,476 INFO L93 Difference]: Finished difference Result 441220 states and 640207 transitions. [2020-10-28 18:24:03,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:24:03,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 323 [2020-10-28 18:24:03,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:24:04,137 INFO L225 Difference]: With dead ends: 441220 [2020-10-28 18:24:04,138 INFO L226 Difference]: Without dead ends: 295981 [2020-10-28 18:24:04,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:24:04,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295981 states.