/usr/bin/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-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:14:49,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:14:49,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:14:49,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:14:49,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:14:49,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:14:49,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:14:49,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:14:49,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:14:49,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:14:49,157 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:14:49,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:14:49,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:14:49,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:14:49,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:14:49,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:14:49,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:14:49,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:14:49,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:14:49,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:14:49,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:14:49,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:14:49,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:14:49,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:14:49,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:14:49,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:14:49,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:14:49,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:14:49,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:14:49,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:14:49,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:14:49,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:14:49,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:14:49,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:14:49,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:14:49,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:14:49,205 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 [2019-11-06 22:14:49,240 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:14:49,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:14:49,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:14:49,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:14:49,245 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:14:49,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:14:49,246 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:14:49,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:14:49,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:14:49,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:14:49,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:14:49,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:14:49,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:14:49,247 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:14:49,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:14:49,247 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:14:49,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:14:49,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:14:49,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:14:49,250 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:14:49,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:14:49,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:14:49,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:14:49,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:14:49,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:14:49,253 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:14:49,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:14:49,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:14:49,253 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:14:49,521 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:14:49,547 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:14:49,551 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:14:49,553 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:14:49,553 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:14:49,554 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-11-06 22:14:49,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01fe94029/e7be6ddc21014f4289cbd914932c01f5/FLAGff9b93448 [2019-11-06 22:14:50,189 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:14:50,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-11-06 22:14:50,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01fe94029/e7be6ddc21014f4289cbd914932c01f5/FLAGff9b93448 [2019-11-06 22:14:50,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01fe94029/e7be6ddc21014f4289cbd914932c01f5 [2019-11-06 22:14:50,508 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:14:50,510 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:14:50,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:14:50,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:14:50,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:14:50,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:14:50" (1/1) ... [2019-11-06 22:14:50,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27042263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:50, skipping insertion in model container [2019-11-06 22:14:50,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:14:50" (1/1) ... [2019-11-06 22:14:50,527 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:14:50,597 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:14:51,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:14:51,102 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:14:51,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:14:51,279 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:14:51,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:51 WrapperNode [2019-11-06 22:14:51,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:14:51,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:14:51,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:14:51,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:14:51,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:51" (1/1) ... [2019-11-06 22:14:51,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:51" (1/1) ... [2019-11-06 22:14:51,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:51" (1/1) ... [2019-11-06 22:14:51,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:51" (1/1) ... [2019-11-06 22:14:51,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:51" (1/1) ... [2019-11-06 22:14:51,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:51" (1/1) ... [2019-11-06 22:14:51,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:51" (1/1) ... [2019-11-06 22:14:51,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:14:51,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:14:51,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:14:51,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:14:51,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:51" (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 [2019-11-06 22:14:51,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:14:51,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:14:51,449 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:14:51,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:14:51,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-06 22:14:51,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-11-06 22:14:51,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-06 22:14:51,450 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-11-06 22:14:51,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:14:51,451 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-11-06 22:14:51,452 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-11-06 22:14:51,452 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-11-06 22:14:51,453 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-11-06 22:14:51,453 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-11-06 22:14:51,454 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-11-06 22:14:51,454 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-06 22:14:51,457 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:14:51,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:14:51,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:14:52,855 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:14:52,856 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 22:14:52,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:14:52 BoogieIcfgContainer [2019-11-06 22:14:52,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:14:52,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:14:52,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:14:52,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:14:52,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:14:50" (1/3) ... [2019-11-06 22:14:52,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1a3135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:14:52, skipping insertion in model container [2019-11-06 22:14:52,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:51" (2/3) ... [2019-11-06 22:14:52,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1a3135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:14:52, skipping insertion in model container [2019-11-06 22:14:52,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:14:52" (3/3) ... [2019-11-06 22:14:52,873 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-11-06 22:14:52,883 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:14:52,905 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-06 22:14:52,918 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-06 22:14:52,951 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:14:52,952 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:14:52,952 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:14:52,952 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:14:52,952 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:14:52,952 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:14:52,952 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:14:52,952 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:14:52,976 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states. [2019-11-06 22:14:52,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-11-06 22:14:52,989 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:52,990 INFO L410 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] [2019-11-06 22:14:52,992 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:52,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:52,997 INFO L82 PathProgramCache]: Analyzing trace with hash -907914047, now seen corresponding path program 1 times [2019-11-06 22:14:53,005 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:53,005 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534467346] [2019-11-06 22:14:53,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:53,998 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-11-06 22:14:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:54,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:14:54,086 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534467346] [2019-11-06 22:14:54,087 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:54,088 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:14:54,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818168294] [2019-11-06 22:14:54,096 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:14:54,096 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:54,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:14:54,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:14:54,116 INFO L87 Difference]: Start difference. First operand 275 states. Second operand 5 states. [2019-11-06 22:14:56,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:56,201 INFO L93 Difference]: Finished difference Result 789 states and 1385 transitions. [2019-11-06 22:14:56,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 22:14:56,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2019-11-06 22:14:56,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:56,221 INFO L225 Difference]: With dead ends: 789 [2019-11-06 22:14:56,221 INFO L226 Difference]: Without dead ends: 519 [2019-11-06 22:14:56,226 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:14:56,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2019-11-06 22:14:56,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 496. [2019-11-06 22:14:56,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2019-11-06 22:14:56,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 722 transitions. [2019-11-06 22:14:56,315 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 722 transitions. Word has length 102 [2019-11-06 22:14:56,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:56,316 INFO L462 AbstractCegarLoop]: Abstraction has 496 states and 722 transitions. [2019-11-06 22:14:56,316 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:14:56,316 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 722 transitions. [2019-11-06 22:14:56,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-06 22:14:56,321 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:56,322 INFO L410 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] [2019-11-06 22:14:56,322 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:56,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:56,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1093362695, now seen corresponding path program 1 times [2019-11-06 22:14:56,323 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:56,323 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145004752] [2019-11-06 22:14:56,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:56,644 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-11-06 22:14:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:56,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:14:56,671 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145004752] [2019-11-06 22:14:56,671 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:56,672 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:14:56,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443332873] [2019-11-06 22:14:56,674 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:14:56,674 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:56,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:14:56,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:14:56,675 INFO L87 Difference]: Start difference. First operand 496 states and 722 transitions. Second operand 4 states. [2019-11-06 22:14:58,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:58,726 INFO L93 Difference]: Finished difference Result 1442 states and 2096 transitions. [2019-11-06 22:14:58,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:14:58,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2019-11-06 22:14:58,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:58,733 INFO L225 Difference]: With dead ends: 1442 [2019-11-06 22:14:58,733 INFO L226 Difference]: Without dead ends: 978 [2019-11-06 22:14:58,737 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:14:58,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2019-11-06 22:14:58,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 498. [2019-11-06 22:14:58,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2019-11-06 22:14:58,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 724 transitions. [2019-11-06 22:14:58,788 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 724 transitions. Word has length 103 [2019-11-06 22:14:58,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:58,788 INFO L462 AbstractCegarLoop]: Abstraction has 498 states and 724 transitions. [2019-11-06 22:14:58,788 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:14:58,789 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 724 transitions. [2019-11-06 22:14:58,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-11-06 22:14:58,792 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:58,793 INFO L410 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] [2019-11-06 22:14:58,793 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:58,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:58,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1521321784, now seen corresponding path program 1 times [2019-11-06 22:14:58,794 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:58,794 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340395615] [2019-11-06 22:14:58,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:59,146 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-11-06 22:14:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:59,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:14:59,169 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340395615] [2019-11-06 22:14:59,169 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:59,169 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:14:59,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405427552] [2019-11-06 22:14:59,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:14:59,170 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:59,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:14:59,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:14:59,171 INFO L87 Difference]: Start difference. First operand 498 states and 724 transitions. Second operand 4 states. [2019-11-06 22:15:00,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:00,641 INFO L93 Difference]: Finished difference Result 1029 states and 1554 transitions. [2019-11-06 22:15:00,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:15:00,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2019-11-06 22:15:00,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:00,647 INFO L225 Difference]: With dead ends: 1029 [2019-11-06 22:15:00,647 INFO L226 Difference]: Without dead ends: 662 [2019-11-06 22:15:00,649 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:00,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2019-11-06 22:15:00,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 646. [2019-11-06 22:15:00,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2019-11-06 22:15:00,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 968 transitions. [2019-11-06 22:15:00,682 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 968 transitions. Word has length 104 [2019-11-06 22:15:00,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:00,682 INFO L462 AbstractCegarLoop]: Abstraction has 646 states and 968 transitions. [2019-11-06 22:15:00,682 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:15:00,683 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 968 transitions. [2019-11-06 22:15:00,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-11-06 22:15:00,684 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:00,685 INFO L410 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] [2019-11-06 22:15:00,685 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:00,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:00,686 INFO L82 PathProgramCache]: Analyzing trace with hash 60289518, now seen corresponding path program 1 times [2019-11-06 22:15:00,686 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:00,686 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714518402] [2019-11-06 22:15:00,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:01,052 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-11-06 22:15:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:01,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:01,106 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714518402] [2019-11-06 22:15:01,106 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:01,106 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:15:01,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607283136] [2019-11-06 22:15:01,107 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:15:01,107 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:01,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:15:01,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:01,108 INFO L87 Difference]: Start difference. First operand 646 states and 968 transitions. Second operand 4 states. [2019-11-06 22:15:03,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:03,146 INFO L93 Difference]: Finished difference Result 1690 states and 2556 transitions. [2019-11-06 22:15:03,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:15:03,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2019-11-06 22:15:03,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:03,154 INFO L225 Difference]: With dead ends: 1690 [2019-11-06 22:15:03,155 INFO L226 Difference]: Without dead ends: 1241 [2019-11-06 22:15:03,156 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:03,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2019-11-06 22:15:03,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1220. [2019-11-06 22:15:03,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1220 states. [2019-11-06 22:15:03,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1820 transitions. [2019-11-06 22:15:03,218 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1820 transitions. Word has length 104 [2019-11-06 22:15:03,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:03,218 INFO L462 AbstractCegarLoop]: Abstraction has 1220 states and 1820 transitions. [2019-11-06 22:15:03,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:15:03,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1820 transitions. [2019-11-06 22:15:03,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-11-06 22:15:03,221 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:03,221 INFO L410 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] [2019-11-06 22:15:03,222 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:03,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:03,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1524807285, now seen corresponding path program 1 times [2019-11-06 22:15:03,223 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:03,223 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961856051] [2019-11-06 22:15:03,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:03,699 WARN L191 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-11-06 22:15:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:03,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:03,742 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961856051] [2019-11-06 22:15:03,743 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:03,743 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:15:03,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962761974] [2019-11-06 22:15:03,744 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:15:03,744 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:03,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:15:03,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:15:03,744 INFO L87 Difference]: Start difference. First operand 1220 states and 1820 transitions. Second operand 5 states. [2019-11-06 22:15:04,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:04,954 INFO L93 Difference]: Finished difference Result 1973 states and 2965 transitions. [2019-11-06 22:15:04,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:15:04,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2019-11-06 22:15:04,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:04,964 INFO L225 Difference]: With dead ends: 1973 [2019-11-06 22:15:04,964 INFO L226 Difference]: Without dead ends: 938 [2019-11-06 22:15:04,967 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:15:04,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2019-11-06 22:15:05,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 938. [2019-11-06 22:15:05,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 938 states. [2019-11-06 22:15:05,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1391 transitions. [2019-11-06 22:15:05,075 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1391 transitions. Word has length 104 [2019-11-06 22:15:05,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:05,078 INFO L462 AbstractCegarLoop]: Abstraction has 938 states and 1391 transitions. [2019-11-06 22:15:05,079 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:15:05,079 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1391 transitions. [2019-11-06 22:15:05,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-11-06 22:15:05,082 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:05,083 INFO L410 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] [2019-11-06 22:15:05,083 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:05,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:05,084 INFO L82 PathProgramCache]: Analyzing trace with hash 431033542, now seen corresponding path program 1 times [2019-11-06 22:15:05,084 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:05,084 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994217239] [2019-11-06 22:15:05,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:05,545 WARN L191 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-11-06 22:15:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:05,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:05,591 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994217239] [2019-11-06 22:15:05,593 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:05,593 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:15:05,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682805254] [2019-11-06 22:15:05,594 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:15:05,595 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:05,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:15:05,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:05,596 INFO L87 Difference]: Start difference. First operand 938 states and 1391 transitions. Second operand 4 states. [2019-11-06 22:15:07,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:07,440 INFO L93 Difference]: Finished difference Result 2034 states and 3133 transitions. [2019-11-06 22:15:07,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:15:07,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2019-11-06 22:15:07,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:07,447 INFO L225 Difference]: With dead ends: 2034 [2019-11-06 22:15:07,447 INFO L226 Difference]: Without dead ends: 1366 [2019-11-06 22:15:07,449 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:07,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2019-11-06 22:15:07,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1322. [2019-11-06 22:15:07,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1322 states. [2019-11-06 22:15:07,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 2014 transitions. [2019-11-06 22:15:07,510 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 2014 transitions. Word has length 106 [2019-11-06 22:15:07,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:07,511 INFO L462 AbstractCegarLoop]: Abstraction has 1322 states and 2014 transitions. [2019-11-06 22:15:07,511 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:15:07,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 2014 transitions. [2019-11-06 22:15:07,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-11-06 22:15:07,513 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:07,513 INFO L410 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] [2019-11-06 22:15:07,514 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:07,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:07,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1740408399, now seen corresponding path program 1 times [2019-11-06 22:15:07,514 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:07,514 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328215903] [2019-11-06 22:15:07,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:07,879 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-11-06 22:15:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:07,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:07,914 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328215903] [2019-11-06 22:15:07,914 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:07,914 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:15:07,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446721821] [2019-11-06 22:15:07,915 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:15:07,915 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:07,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:15:07,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:15:07,916 INFO L87 Difference]: Start difference. First operand 1322 states and 2014 transitions. Second operand 5 states. [2019-11-06 22:15:09,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:09,748 INFO L93 Difference]: Finished difference Result 3366 states and 5138 transitions. [2019-11-06 22:15:09,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:15:09,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2019-11-06 22:15:09,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:09,760 INFO L225 Difference]: With dead ends: 3366 [2019-11-06 22:15:09,760 INFO L226 Difference]: Without dead ends: 2067 [2019-11-06 22:15:09,763 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:15:09,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2067 states. [2019-11-06 22:15:09,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2067 to 2052. [2019-11-06 22:15:09,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2052 states. [2019-11-06 22:15:09,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 3114 transitions. [2019-11-06 22:15:09,868 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 3114 transitions. Word has length 107 [2019-11-06 22:15:09,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:09,869 INFO L462 AbstractCegarLoop]: Abstraction has 2052 states and 3114 transitions. [2019-11-06 22:15:09,869 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:15:09,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 3114 transitions. [2019-11-06 22:15:09,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-11-06 22:15:09,872 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:09,872 INFO L410 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] [2019-11-06 22:15:09,873 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:09,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:09,873 INFO L82 PathProgramCache]: Analyzing trace with hash -481916784, now seen corresponding path program 1 times [2019-11-06 22:15:09,873 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:09,874 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754368727] [2019-11-06 22:15:09,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:10,192 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-11-06 22:15:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:10,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:10,272 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754368727] [2019-11-06 22:15:10,272 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:10,272 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:15:10,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144429635] [2019-11-06 22:15:10,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:15:10,274 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:10,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:15:10,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:10,276 INFO L87 Difference]: Start difference. First operand 2052 states and 3114 transitions. Second operand 4 states. [2019-11-06 22:15:12,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:12,220 INFO L93 Difference]: Finished difference Result 5515 states and 8477 transitions. [2019-11-06 22:15:12,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:15:12,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2019-11-06 22:15:12,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:12,239 INFO L225 Difference]: With dead ends: 5515 [2019-11-06 22:15:12,239 INFO L226 Difference]: Without dead ends: 3822 [2019-11-06 22:15:12,245 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:12,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3822 states. [2019-11-06 22:15:12,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3822 to 3809. [2019-11-06 22:15:12,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3809 states. [2019-11-06 22:15:12,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3809 states to 3809 states and 5773 transitions. [2019-11-06 22:15:12,451 INFO L78 Accepts]: Start accepts. Automaton has 3809 states and 5773 transitions. Word has length 109 [2019-11-06 22:15:12,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:12,452 INFO L462 AbstractCegarLoop]: Abstraction has 3809 states and 5773 transitions. [2019-11-06 22:15:12,452 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:15:12,452 INFO L276 IsEmpty]: Start isEmpty. Operand 3809 states and 5773 transitions. [2019-11-06 22:15:12,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-11-06 22:15:12,457 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:12,458 INFO L410 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] [2019-11-06 22:15:12,458 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:12,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:12,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1064644563, now seen corresponding path program 1 times [2019-11-06 22:15:12,459 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:12,459 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691005484] [2019-11-06 22:15:12,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:12,868 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-11-06 22:15:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:12,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:12,898 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691005484] [2019-11-06 22:15:12,898 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:12,898 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:15:12,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076151125] [2019-11-06 22:15:12,899 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:15:12,899 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:12,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:15:12,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:15:12,900 INFO L87 Difference]: Start difference. First operand 3809 states and 5773 transitions. Second operand 5 states. [2019-11-06 22:15:14,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:14,027 INFO L93 Difference]: Finished difference Result 5943 states and 9044 transitions. [2019-11-06 22:15:14,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:15:14,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2019-11-06 22:15:14,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:14,041 INFO L225 Difference]: With dead ends: 5943 [2019-11-06 22:15:14,042 INFO L226 Difference]: Without dead ends: 3112 [2019-11-06 22:15:14,048 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:15:14,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3112 states. [2019-11-06 22:15:14,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3112 to 3112. [2019-11-06 22:15:14,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3112 states. [2019-11-06 22:15:14,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3112 states to 3112 states and 4697 transitions. [2019-11-06 22:15:14,182 INFO L78 Accepts]: Start accepts. Automaton has 3112 states and 4697 transitions. Word has length 109 [2019-11-06 22:15:14,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:14,182 INFO L462 AbstractCegarLoop]: Abstraction has 3112 states and 4697 transitions. [2019-11-06 22:15:14,182 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:15:14,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3112 states and 4697 transitions. [2019-11-06 22:15:14,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-11-06 22:15:14,187 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:14,188 INFO L410 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] [2019-11-06 22:15:14,188 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:14,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:14,192 INFO L82 PathProgramCache]: Analyzing trace with hash 894991708, now seen corresponding path program 1 times [2019-11-06 22:15:14,192 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:14,193 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575594494] [2019-11-06 22:15:14,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:14,475 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-11-06 22:15:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:14,513 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575594494] [2019-11-06 22:15:14,514 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:14,514 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:15:14,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807797639] [2019-11-06 22:15:14,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:15:14,517 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:14,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:15:14,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:14,518 INFO L87 Difference]: Start difference. First operand 3112 states and 4697 transitions. Second operand 4 states. [2019-11-06 22:15:15,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:15,973 INFO L93 Difference]: Finished difference Result 7812 states and 12106 transitions. [2019-11-06 22:15:15,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:15:15,973 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2019-11-06 22:15:15,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:15,991 INFO L225 Difference]: With dead ends: 7812 [2019-11-06 22:15:15,991 INFO L226 Difference]: Without dead ends: 5036 [2019-11-06 22:15:15,997 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:16,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5036 states. [2019-11-06 22:15:16,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5036 to 4830. [2019-11-06 22:15:16,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4830 states. [2019-11-06 22:15:16,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4830 states to 4830 states and 7460 transitions. [2019-11-06 22:15:16,229 INFO L78 Accepts]: Start accepts. Automaton has 4830 states and 7460 transitions. Word has length 111 [2019-11-06 22:15:16,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:16,229 INFO L462 AbstractCegarLoop]: Abstraction has 4830 states and 7460 transitions. [2019-11-06 22:15:16,230 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:15:16,230 INFO L276 IsEmpty]: Start isEmpty. Operand 4830 states and 7460 transitions. [2019-11-06 22:15:16,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-06 22:15:16,232 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:16,232 INFO L410 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] [2019-11-06 22:15:16,233 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:16,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:16,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1533697134, now seen corresponding path program 1 times [2019-11-06 22:15:16,233 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:16,233 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351754682] [2019-11-06 22:15:16,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:16,487 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-11-06 22:15:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:16,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:16,521 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351754682] [2019-11-06 22:15:16,521 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:16,522 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:15:16,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758809427] [2019-11-06 22:15:16,522 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:15:16,522 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:16,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:15:16,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:16,523 INFO L87 Difference]: Start difference. First operand 4830 states and 7460 transitions. Second operand 4 states. [2019-11-06 22:15:16,769 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2019-11-06 22:15:18,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:18,085 INFO L93 Difference]: Finished difference Result 13617 states and 21279 transitions. [2019-11-06 22:15:18,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:15:18,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2019-11-06 22:15:18,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:18,121 INFO L225 Difference]: With dead ends: 13617 [2019-11-06 22:15:18,121 INFO L226 Difference]: Without dead ends: 9347 [2019-11-06 22:15:18,130 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:15:18,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9347 states. [2019-11-06 22:15:18,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9347 to 9275. [2019-11-06 22:15:18,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9275 states. [2019-11-06 22:15:18,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9275 states to 9275 states and 14366 transitions. [2019-11-06 22:15:18,558 INFO L78 Accepts]: Start accepts. Automaton has 9275 states and 14366 transitions. Word has length 112 [2019-11-06 22:15:18,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:18,559 INFO L462 AbstractCegarLoop]: Abstraction has 9275 states and 14366 transitions. [2019-11-06 22:15:18,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:15:18,559 INFO L276 IsEmpty]: Start isEmpty. Operand 9275 states and 14366 transitions. [2019-11-06 22:15:18,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-06 22:15:18,563 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:18,563 INFO L410 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] [2019-11-06 22:15:18,563 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:18,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:18,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1051932183, now seen corresponding path program 1 times [2019-11-06 22:15:18,564 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:18,564 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470490730] [2019-11-06 22:15:18,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:18,954 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-11-06 22:15:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:18,990 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470490730] [2019-11-06 22:15:18,991 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:18,991 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:15:18,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773554096] [2019-11-06 22:15:18,992 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:15:18,992 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:18,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:15:18,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:15:18,992 INFO L87 Difference]: Start difference. First operand 9275 states and 14366 transitions. Second operand 5 states. [2019-11-06 22:15:21,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:21,270 INFO L93 Difference]: Finished difference Result 25948 states and 40113 transitions. [2019-11-06 22:15:21,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:15:21,270 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2019-11-06 22:15:21,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:21,307 INFO L225 Difference]: With dead ends: 25948 [2019-11-06 22:15:21,307 INFO L226 Difference]: Without dead ends: 16716 [2019-11-06 22:15:21,321 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:15:21,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16716 states. [2019-11-06 22:15:22,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16716 to 16644. [2019-11-06 22:15:22,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16644 states. [2019-11-06 22:15:22,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16644 states to 16644 states and 25497 transitions. [2019-11-06 22:15:22,048 INFO L78 Accepts]: Start accepts. Automaton has 16644 states and 25497 transitions. Word has length 112 [2019-11-06 22:15:22,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:22,048 INFO L462 AbstractCegarLoop]: Abstraction has 16644 states and 25497 transitions. [2019-11-06 22:15:22,048 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:15:22,049 INFO L276 IsEmpty]: Start isEmpty. Operand 16644 states and 25497 transitions. [2019-11-06 22:15:22,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-06 22:15:22,055 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:22,055 INFO L410 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] [2019-11-06 22:15:22,055 INFO L410 AbstractCegarLoop]: === Iteration 13 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:22,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:22,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1424445537, now seen corresponding path program 1 times [2019-11-06 22:15:22,056 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:22,056 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860470944] [2019-11-06 22:15:22,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:22,292 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-11-06 22:15:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:22,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:22,317 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860470944] [2019-11-06 22:15:22,317 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:22,317 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:15:22,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755214479] [2019-11-06 22:15:22,318 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:15:22,318 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:22,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:15:22,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:22,319 INFO L87 Difference]: Start difference. First operand 16644 states and 25497 transitions. Second operand 4 states. [2019-11-06 22:15:25,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:25,091 INFO L93 Difference]: Finished difference Result 49726 states and 76228 transitions. [2019-11-06 22:15:25,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:15:25,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2019-11-06 22:15:25,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:25,146 INFO L225 Difference]: With dead ends: 49726 [2019-11-06 22:15:25,146 INFO L226 Difference]: Without dead ends: 33194 [2019-11-06 22:15:25,173 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:25,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33194 states.