java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 08:21:44,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 08:21:44,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 08:21:44,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 08:21:44,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 08:21:44,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 08:21:44,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 08:21:44,941 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 08:21:44,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 08:21:44,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 08:21:44,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 08:21:44,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 08:21:44,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 08:21:44,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 08:21:44,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 08:21:44,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 08:21:44,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 08:21:44,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 08:21:44,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 08:21:44,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 08:21:44,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 08:21:44,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 08:21:44,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 08:21:44,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 08:21:44,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 08:21:44,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 08:21:44,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 08:21:44,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 08:21:44,984 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-08 08:21:45,008 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 08:21:45,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 08:21:45,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 08:21:45,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 08:21:45,010 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 08:21:45,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 08:21:45,011 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 08:21:45,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 08:21:45,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 08:21:45,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 08:21:45,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 08:21:45,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 08:21:45,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 08:21:45,012 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 08:21:45,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 08:21:45,013 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 08:21:45,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 08:21:45,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 08:21:45,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 08:21:45,014 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 08:21:45,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 08:21:45,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 08:21:45,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 08:21:45,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 08:21:45,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 08:21:45,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 08:21:45,015 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 08:21:45,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 08:21:45,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 08:21:45,064 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 08:21:45,078 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 08:21:45,081 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 08:21:45,083 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 08:21:45,083 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 08:21:45,084 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.1.ufo.UNBOUNDED.pals.c [2019-09-08 08:21:45,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc126ec63/ade6bc69185043f99e72e392ab5989d2/FLAG6478d91b4 [2019-09-08 08:21:45,823 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 08:21:45,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.1.ufo.UNBOUNDED.pals.c [2019-09-08 08:21:45,848 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc126ec63/ade6bc69185043f99e72e392ab5989d2/FLAG6478d91b4 [2019-09-08 08:21:46,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc126ec63/ade6bc69185043f99e72e392ab5989d2 [2019-09-08 08:21:46,102 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 08:21:46,103 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 08:21:46,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 08:21:46,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 08:21:46,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 08:21:46,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 08:21:46" (1/1) ... [2019-09-08 08:21:46,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5edfb8d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:21:46, skipping insertion in model container [2019-09-08 08:21:46,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 08:21:46" (1/1) ... [2019-09-08 08:21:46,119 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 08:21:46,200 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 08:21:46,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 08:21:46,822 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 08:21:46,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 08:21:46,998 INFO L192 MainTranslator]: Completed translation [2019-09-08 08:21:46,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:21:46 WrapperNode [2019-09-08 08:21:46,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 08:21:47,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 08:21:47,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 08:21:47,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 08:21:47,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:21:46" (1/1) ... [2019-09-08 08:21:47,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:21:46" (1/1) ... [2019-09-08 08:21:47,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:21:46" (1/1) ... [2019-09-08 08:21:47,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:21:46" (1/1) ... [2019-09-08 08:21:47,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:21:46" (1/1) ... [2019-09-08 08:21:47,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:21:46" (1/1) ... [2019-09-08 08:21:47,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:21:46" (1/1) ... [2019-09-08 08:21:47,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 08:21:47,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 08:21:47,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 08:21:47,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 08:21:47,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:21:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-09-08 08:21:47,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 08:21:47,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 08:21:47,234 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2019-09-08 08:21:47,234 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2019-09-08 08:21:47,234 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2019-09-08 08:21:47,234 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2019-09-08 08:21:47,234 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2019-09-08 08:21:47,235 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-09-08 08:21:47,235 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-09-08 08:21:47,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 08:21:47,235 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2019-09-08 08:21:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 08:21:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-08 08:21:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-09-08 08:21:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-08 08:21:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-08 08:21:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 08:21:47,237 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-08 08:21:47,237 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-08 08:21:47,237 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-08 08:21:47,237 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-08 08:21:47,237 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-08 08:21:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2019-09-08 08:21:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2019-09-08 08:21:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-08 08:21:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-08 08:21:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 08:21:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 08:21:47,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 08:21:49,595 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 08:21:49,595 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-08 08:21:49,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 08:21:49 BoogieIcfgContainer [2019-09-08 08:21:49,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 08:21:49,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 08:21:49,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 08:21:49,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 08:21:49,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 08:21:46" (1/3) ... [2019-09-08 08:21:49,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b35c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 08:21:49, skipping insertion in model container [2019-09-08 08:21:49,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:21:46" (2/3) ... [2019-09-08 08:21:49,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b35c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 08:21:49, skipping insertion in model container [2019-09-08 08:21:49,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 08:21:49" (3/3) ... [2019-09-08 08:21:49,605 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.UNBOUNDED.pals.c [2019-09-08 08:21:49,615 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 08:21:49,624 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 08:21:49,641 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 08:21:49,678 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 08:21:49,679 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 08:21:49,679 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 08:21:49,679 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 08:21:49,679 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 08:21:49,679 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 08:21:49,680 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 08:21:49,680 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 08:21:49,680 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 08:21:49,713 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states. [2019-09-08 08:21:49,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-09-08 08:21:49,740 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:21:49,741 INFO L399 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] [2019-09-08 08:21:49,744 INFO L418 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:21:49,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:21:49,749 INFO L82 PathProgramCache]: Analyzing trace with hash -107318572, now seen corresponding path program 1 times [2019-09-08 08:21:49,751 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:21:49,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:21:49,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:21:49,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:21:49,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:21:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:21:50,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 08:21:50,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:21:50,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 08:21:50,463 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 08:21:50,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 08:21:50,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 08:21:50,481 INFO L87 Difference]: Start difference. First operand 756 states. Second operand 5 states. [2019-09-08 08:21:50,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:21:50,774 INFO L93 Difference]: Finished difference Result 974 states and 1723 transitions. [2019-09-08 08:21:50,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 08:21:50,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2019-09-08 08:21:50,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:21:50,816 INFO L225 Difference]: With dead ends: 974 [2019-09-08 08:21:50,817 INFO L226 Difference]: Without dead ends: 751 [2019-09-08 08:21:50,825 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 08:21:50,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2019-09-08 08:21:50,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 751. [2019-09-08 08:21:50,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2019-09-08 08:21:50,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1310 transitions. [2019-09-08 08:21:50,958 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1310 transitions. Word has length 181 [2019-09-08 08:21:50,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:21:50,959 INFO L475 AbstractCegarLoop]: Abstraction has 751 states and 1310 transitions. [2019-09-08 08:21:50,959 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 08:21:50,960 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1310 transitions. [2019-09-08 08:21:50,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2019-09-08 08:21:50,974 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:21:50,974 INFO L399 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] [2019-09-08 08:21:50,975 INFO L418 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:21:50,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:21:50,975 INFO L82 PathProgramCache]: Analyzing trace with hash 4863756, now seen corresponding path program 1 times [2019-09-08 08:21:50,975 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:21:50,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:21:50,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:21:50,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:21:50,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:21:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:21:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 08:21:51,720 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:21:51,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-09-08 08:21:51,723 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-08 08:21:51,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-08 08:21:51,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-09-08 08:21:51,724 INFO L87 Difference]: Start difference. First operand 751 states and 1310 transitions. Second operand 13 states. [2019-09-08 08:22:05,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:22:05,950 INFO L93 Difference]: Finished difference Result 3562 states and 5980 transitions. [2019-09-08 08:22:05,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-09-08 08:22:05,951 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 225 [2019-09-08 08:22:05,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:22:05,987 INFO L225 Difference]: With dead ends: 3562 [2019-09-08 08:22:05,987 INFO L226 Difference]: Without dead ends: 3348 [2019-09-08 08:22:05,998 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=605, Invalid=2047, Unknown=0, NotChecked=0, Total=2652 [2019-09-08 08:22:06,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3348 states. [2019-09-08 08:22:06,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3348 to 1825. [2019-09-08 08:22:06,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1825 states. [2019-09-08 08:22:06,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 3088 transitions. [2019-09-08 08:22:06,176 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 3088 transitions. Word has length 225 [2019-09-08 08:22:06,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:22:06,179 INFO L475 AbstractCegarLoop]: Abstraction has 1825 states and 3088 transitions. [2019-09-08 08:22:06,179 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-08 08:22:06,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 3088 transitions. [2019-09-08 08:22:06,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-09-08 08:22:06,186 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:22:06,187 INFO L399 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] [2019-09-08 08:22:06,188 INFO L418 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:22:06,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:22:06,188 INFO L82 PathProgramCache]: Analyzing trace with hash -918980305, now seen corresponding path program 1 times [2019-09-08 08:22:06,188 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:22:06,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:22:06,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:22:06,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:22:06,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:22:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:22:06,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 08:22:06,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:22:06,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 08:22:06,592 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 08:22:06,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 08:22:06,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-08 08:22:06,593 INFO L87 Difference]: Start difference. First operand 1825 states and 3088 transitions. Second operand 6 states. [2019-09-08 08:22:11,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:22:11,232 INFO L93 Difference]: Finished difference Result 4423 states and 7381 transitions. [2019-09-08 08:22:11,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 08:22:11,233 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 226 [2019-09-08 08:22:11,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:22:11,256 INFO L225 Difference]: With dead ends: 4423 [2019-09-08 08:22:11,257 INFO L226 Difference]: Without dead ends: 3135 [2019-09-08 08:22:11,261 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-09-08 08:22:11,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3135 states. [2019-09-08 08:22:11,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3135 to 2914. [2019-09-08 08:22:11,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2914 states. [2019-09-08 08:22:11,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2914 states to 2914 states and 4881 transitions. [2019-09-08 08:22:11,421 INFO L78 Accepts]: Start accepts. Automaton has 2914 states and 4881 transitions. Word has length 226 [2019-09-08 08:22:11,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:22:11,422 INFO L475 AbstractCegarLoop]: Abstraction has 2914 states and 4881 transitions. [2019-09-08 08:22:11,423 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 08:22:11,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 4881 transitions. [2019-09-08 08:22:11,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-09-08 08:22:11,429 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:22:11,430 INFO L399 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] [2019-09-08 08:22:11,430 INFO L418 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:22:11,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:22:11,431 INFO L82 PathProgramCache]: Analyzing trace with hash 454939939, now seen corresponding path program 1 times [2019-09-08 08:22:11,431 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:22:11,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:22:11,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:22:11,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:22:11,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:22:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:22:11,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 08:22:11,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:22:11,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 08:22:11,715 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 08:22:11,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 08:22:11,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 08:22:11,716 INFO L87 Difference]: Start difference. First operand 2914 states and 4881 transitions. Second operand 6 states. [2019-09-08 08:22:14,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:22:14,998 INFO L93 Difference]: Finished difference Result 7052 states and 11689 transitions. [2019-09-08 08:22:14,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 08:22:14,999 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 227 [2019-09-08 08:22:14,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:22:15,023 INFO L225 Difference]: With dead ends: 7052 [2019-09-08 08:22:15,023 INFO L226 Difference]: Without dead ends: 4675 [2019-09-08 08:22:15,030 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-09-08 08:22:15,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4675 states. [2019-09-08 08:22:15,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4675 to 4652. [2019-09-08 08:22:15,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4652 states. [2019-09-08 08:22:15,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4652 states to 4652 states and 7727 transitions. [2019-09-08 08:22:15,187 INFO L78 Accepts]: Start accepts. Automaton has 4652 states and 7727 transitions. Word has length 227 [2019-09-08 08:22:15,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:22:15,187 INFO L475 AbstractCegarLoop]: Abstraction has 4652 states and 7727 transitions. [2019-09-08 08:22:15,187 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 08:22:15,188 INFO L276 IsEmpty]: Start isEmpty. Operand 4652 states and 7727 transitions. [2019-09-08 08:22:15,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-09-08 08:22:15,194 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:22:15,195 INFO L399 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] [2019-09-08 08:22:15,195 INFO L418 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:22:15,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:22:15,196 INFO L82 PathProgramCache]: Analyzing trace with hash 45109606, now seen corresponding path program 1 times [2019-09-08 08:22:15,196 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:22:15,196 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:22:15,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:22:15,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:22:15,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:22:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:22:15,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 08:22:15,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:22:15,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 08:22:15,472 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 08:22:15,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 08:22:15,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 08:22:15,473 INFO L87 Difference]: Start difference. First operand 4652 states and 7727 transitions. Second operand 6 states. [2019-09-08 08:22:20,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:22:20,567 INFO L93 Difference]: Finished difference Result 24996 states and 41210 transitions. [2019-09-08 08:22:20,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 08:22:20,567 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 228 [2019-09-08 08:22:20,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:22:20,681 INFO L225 Difference]: With dead ends: 24996 [2019-09-08 08:22:20,681 INFO L226 Difference]: Without dead ends: 20881 [2019-09-08 08:22:20,701 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-09-08 08:22:20,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20881 states. [2019-09-08 08:22:21,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20881 to 20835. [2019-09-08 08:22:21,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20835 states. [2019-09-08 08:22:22,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20835 states to 20835 states and 34262 transitions. [2019-09-08 08:22:22,052 INFO L78 Accepts]: Start accepts. Automaton has 20835 states and 34262 transitions. Word has length 228 [2019-09-08 08:22:22,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:22:22,052 INFO L475 AbstractCegarLoop]: Abstraction has 20835 states and 34262 transitions. [2019-09-08 08:22:22,053 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 08:22:22,053 INFO L276 IsEmpty]: Start isEmpty. Operand 20835 states and 34262 transitions. [2019-09-08 08:22:22,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-09-08 08:22:22,062 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:22:22,063 INFO L399 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] [2019-09-08 08:22:22,063 INFO L418 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:22:22,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:22:22,064 INFO L82 PathProgramCache]: Analyzing trace with hash 173586234, now seen corresponding path program 1 times [2019-09-08 08:22:22,064 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:22:22,064 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:22:22,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:22:22,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:22:22,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:22:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:22:22,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 08:22:22,367 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:22:22,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 08:22:22,368 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 08:22:22,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 08:22:22,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 08:22:22,369 INFO L87 Difference]: Start difference. First operand 20835 states and 34262 transitions. Second operand 6 states. [2019-09-08 08:22:28,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:22:28,228 INFO L93 Difference]: Finished difference Result 121860 states and 200166 transitions. [2019-09-08 08:22:28,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 08:22:28,228 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 229 [2019-09-08 08:22:28,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:22:28,617 INFO L225 Difference]: With dead ends: 121860 [2019-09-08 08:22:28,617 INFO L226 Difference]: Without dead ends: 101562 [2019-09-08 08:22:28,698 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-09-08 08:22:28,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101562 states. [2019-09-08 08:22:33,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101562 to 101364. [2019-09-08 08:22:33,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101364 states. [2019-09-08 08:22:33,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101364 states to 101364 states and 166183 transitions. [2019-09-08 08:22:33,924 INFO L78 Accepts]: Start accepts. Automaton has 101364 states and 166183 transitions. Word has length 229 [2019-09-08 08:22:33,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:22:33,925 INFO L475 AbstractCegarLoop]: Abstraction has 101364 states and 166183 transitions. [2019-09-08 08:22:33,925 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 08:22:33,926 INFO L276 IsEmpty]: Start isEmpty. Operand 101364 states and 166183 transitions. [2019-09-08 08:22:33,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-09-08 08:22:33,936 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:22:33,938 INFO L399 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] [2019-09-08 08:22:33,939 INFO L418 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:22:33,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:22:33,939 INFO L82 PathProgramCache]: Analyzing trace with hash -190290531, now seen corresponding path program 1 times [2019-09-08 08:22:33,939 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:22:33,939 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:22:33,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:22:33,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:22:33,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:22:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:22:34,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 08:22:34,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:22:34,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 08:22:34,163 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 08:22:34,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 08:22:34,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 08:22:34,164 INFO L87 Difference]: Start difference. First operand 101364 states and 166183 transitions. Second operand 6 states. [2019-09-08 08:22:46,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:22:46,287 INFO L93 Difference]: Finished difference Result 548628 states and 899055 transitions. [2019-09-08 08:22:46,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 08:22:46,287 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 230 [2019-09-08 08:22:46,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:22:47,710 INFO L225 Difference]: With dead ends: 548628 [2019-09-08 08:22:47,710 INFO L226 Difference]: Without dead ends: 447801 [2019-09-08 08:22:47,924 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-09-08 08:22:48,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447801 states. [2019-09-08 08:23:01,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447801 to 446852. [2019-09-08 08:23:01,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446852 states. [2019-09-08 08:23:01,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446852 states to 446852 states and 731254 transitions. [2019-09-08 08:23:01,905 INFO L78 Accepts]: Start accepts. Automaton has 446852 states and 731254 transitions. Word has length 230 [2019-09-08 08:23:01,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:23:01,905 INFO L475 AbstractCegarLoop]: Abstraction has 446852 states and 731254 transitions. [2019-09-08 08:23:01,905 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 08:23:01,906 INFO L276 IsEmpty]: Start isEmpty. Operand 446852 states and 731254 transitions. [2019-09-08 08:23:01,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-09-08 08:23:01,914 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:23:01,915 INFO L399 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] [2019-09-08 08:23:01,915 INFO L418 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:23:01,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:23:01,915 INFO L82 PathProgramCache]: Analyzing trace with hash 690152725, now seen corresponding path program 1 times [2019-09-08 08:23:01,916 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:23:01,916 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:23:01,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:23:01,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:23:01,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:23:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:23:07,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 08:23:07,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:23:07,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 08:23:07,611 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 08:23:07,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 08:23:07,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 08:23:07,612 INFO L87 Difference]: Start difference. First operand 446852 states and 731254 transitions. Second operand 4 states. [2019-09-08 08:23:36,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:23:36,220 INFO L93 Difference]: Finished difference Result 1647678 states and 2709809 transitions. [2019-09-08 08:23:36,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 08:23:36,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 232 [2019-09-08 08:23:36,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:23:39,497 INFO L225 Difference]: With dead ends: 1647678 [2019-09-08 08:23:39,497 INFO L226 Difference]: Without dead ends: 1201363 [2019-09-08 08:23:40,937 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 08:23:41,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201363 states. [2019-09-08 08:24:41,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201363 to 1195136. [2019-09-08 08:24:41,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1195136 states. [2019-09-08 08:24:45,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195136 states to 1195136 states and 1953184 transitions. [2019-09-08 08:24:46,011 INFO L78 Accepts]: Start accepts. Automaton has 1195136 states and 1953184 transitions. Word has length 232 [2019-09-08 08:24:46,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 08:24:46,012 INFO L475 AbstractCegarLoop]: Abstraction has 1195136 states and 1953184 transitions. [2019-09-08 08:24:46,012 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 08:24:46,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1195136 states and 1953184 transitions. [2019-09-08 08:24:46,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-09-08 08:24:46,022 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 08:24:46,022 INFO L399 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] [2019-09-08 08:24:46,022 INFO L418 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 08:24:46,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 08:24:46,023 INFO L82 PathProgramCache]: Analyzing trace with hash -2119065593, now seen corresponding path program 1 times [2019-09-08 08:24:46,023 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 08:24:46,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 08:24:46,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:24:46,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 08:24:46,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 08:24:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 08:24:46,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 08:24:46,402 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 08:24:46,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-09-08 08:24:46,403 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-08 08:24:46,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-08 08:24:46,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-09-08 08:24:46,403 INFO L87 Difference]: Start difference. First operand 1195136 states and 1953184 transitions. Second operand 13 states. [2019-09-08 08:25:44,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 08:25:44,788 INFO L93 Difference]: Finished difference Result 2034287 states and 3330923 transitions. [2019-09-08 08:25:44,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2019-09-08 08:25:44,789 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 233 [2019-09-08 08:25:44,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 08:26:05,492 INFO L225 Difference]: With dead ends: 2034287 [2019-09-08 08:26:05,492 INFO L226 Difference]: Without dead ends: 1819383 [2019-09-08 08:26:06,094 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1747 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=985, Invalid=3985, Unknown=0, NotChecked=0, Total=4970 [2019-09-08 08:26:09,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819383 states.