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.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:46:13,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:46:13,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:46:13,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:46:13,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:46:13,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:46:13,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:46:13,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:46:13,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:46:13,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:46:13,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:46:13,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:46:13,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:46:13,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:46:13,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:46:13,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:46:13,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:46:13,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:46:13,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:46:14,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:46:14,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:46:14,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:46:14,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:46:14,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:46:14,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:46:14,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:46:14,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:46:14,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:46:14,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:46:14,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:46:14,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:46:14,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:46:14,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:46:14,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:46:14,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:46:14,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:46:14,024 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 [2019-10-13 19:46:14,048 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:46:14,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:46:14,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:46:14,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:46:14,051 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:46:14,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:46:14,051 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:46:14,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:46:14,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:46:14,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:46:14,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:46:14,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:46:14,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:46:14,054 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:46:14,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:46:14,055 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:46:14,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:46:14,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:46:14,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:46:14,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:46:14,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:46:14,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:46:14,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:46:14,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:46:14,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:46:14,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:46:14,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:46:14,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:46:14,058 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:46:14,338 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:46:14,351 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:46:14,354 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:46:14,355 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:46:14,356 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:46:14,356 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-10-13 19:46:14,429 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/104e5f42c/b76882bdc4c2474695fdb22765ba1f9b/FLAGe0f316e14 [2019-10-13 19:46:14,990 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:46:14,992 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-10-13 19:46:15,012 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/104e5f42c/b76882bdc4c2474695fdb22765ba1f9b/FLAGe0f316e14 [2019-10-13 19:46:15,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/104e5f42c/b76882bdc4c2474695fdb22765ba1f9b [2019-10-13 19:46:15,292 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:46:15,293 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:46:15,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:46:15,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:46:15,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:46:15,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:46:15" (1/1) ... [2019-10-13 19:46:15,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dba7643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:15, skipping insertion in model container [2019-10-13 19:46:15,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:46:15" (1/1) ... [2019-10-13 19:46:15,310 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:46:15,380 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:46:15,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:46:15,929 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:46:16,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:46:16,375 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:46:16,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:16 WrapperNode [2019-10-13 19:46:16,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:46:16,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:46:16,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:46:16,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:46:16,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:16" (1/1) ... [2019-10-13 19:46:16,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:16" (1/1) ... [2019-10-13 19:46:16,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:16" (1/1) ... [2019-10-13 19:46:16,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:16" (1/1) ... [2019-10-13 19:46:16,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:16" (1/1) ... [2019-10-13 19:46:16,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:16" (1/1) ... [2019-10-13 19:46:16,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:16" (1/1) ... [2019-10-13 19:46:16,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:46:16,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:46:16,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:46:16,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:46:16,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:16" (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 [2019-10-13 19:46:16,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:46:16,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:46:16,595 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:46:16,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:46:16,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-13 19:46:16,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-13 19:46:16,595 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-13 19:46:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:46:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-13 19:46:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-13 19:46:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-13 19:46:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-13 19:46:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-13 19:46:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-13 19:46:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-13 19:46:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:46:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:46:16,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:46:18,142 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:46:18,142 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:46:18,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:46:18 BoogieIcfgContainer [2019-10-13 19:46:18,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:46:18,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:46:18,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:46:18,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:46:18,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:46:15" (1/3) ... [2019-10-13 19:46:18,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8918ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:46:18, skipping insertion in model container [2019-10-13 19:46:18,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:16" (2/3) ... [2019-10-13 19:46:18,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8918ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:46:18, skipping insertion in model container [2019-10-13 19:46:18,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:46:18" (3/3) ... [2019-10-13 19:46:18,158 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-10-13 19:46:18,168 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:46:18,188 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:46:18,199 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:46:18,228 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:46:18,228 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:46:18,228 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:46:18,229 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:46:18,229 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:46:18,229 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:46:18,229 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:46:18,229 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:46:18,255 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states. [2019-10-13 19:46:18,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-13 19:46:18,272 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:18,273 INFO L380 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] [2019-10-13 19:46:18,275 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:18,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:18,280 INFO L82 PathProgramCache]: Analyzing trace with hash 424996304, now seen corresponding path program 1 times [2019-10-13 19:46:18,286 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:18,286 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435580882] [2019-10-13 19:46:18,287 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:18,287 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:18,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:19,220 WARN L191 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2019-10-13 19:46:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:19,292 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435580882] [2019-10-13 19:46:19,293 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:19,294 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:19,295 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211611385] [2019-10-13 19:46:19,300 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:19,301 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:19,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:19,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:19,317 INFO L87 Difference]: Start difference. First operand 342 states. Second operand 4 states. [2019-10-13 19:46:19,665 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2019-10-13 19:46:21,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:21,641 INFO L93 Difference]: Finished difference Result 655 states and 1134 transitions. [2019-10-13 19:46:21,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:46:21,643 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2019-10-13 19:46:21,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:21,687 INFO L225 Difference]: With dead ends: 655 [2019-10-13 19:46:21,688 INFO L226 Difference]: Without dead ends: 540 [2019-10-13 19:46:21,695 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:46:21,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2019-10-13 19:46:21,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 538. [2019-10-13 19:46:21,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2019-10-13 19:46:21,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 803 transitions. [2019-10-13 19:46:21,827 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 803 transitions. Word has length 157 [2019-10-13 19:46:21,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:21,828 INFO L462 AbstractCegarLoop]: Abstraction has 538 states and 803 transitions. [2019-10-13 19:46:21,828 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:21,828 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 803 transitions. [2019-10-13 19:46:21,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-13 19:46:21,833 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:21,834 INFO L380 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] [2019-10-13 19:46:21,834 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:21,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:21,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1469457116, now seen corresponding path program 1 times [2019-10-13 19:46:21,835 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:21,835 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676192824] [2019-10-13 19:46:21,835 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:21,835 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:21,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:22,588 WARN L191 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2019-10-13 19:46:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:22,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:22,641 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676192824] [2019-10-13 19:46:22,641 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:22,641 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:46:22,642 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911024410] [2019-10-13 19:46:22,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:46:22,644 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:22,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:46:22,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:46:22,645 INFO L87 Difference]: Start difference. First operand 538 states and 803 transitions. Second operand 5 states. [2019-10-13 19:46:25,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:25,082 INFO L93 Difference]: Finished difference Result 1561 states and 2326 transitions. [2019-10-13 19:46:25,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:46:25,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2019-10-13 19:46:25,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:25,090 INFO L225 Difference]: With dead ends: 1561 [2019-10-13 19:46:25,090 INFO L226 Difference]: Without dead ends: 1036 [2019-10-13 19:46:25,098 INFO L600 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 [2019-10-13 19:46:25,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2019-10-13 19:46:25,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1034. [2019-10-13 19:46:25,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2019-10-13 19:46:25,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1529 transitions. [2019-10-13 19:46:25,157 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1529 transitions. Word has length 157 [2019-10-13 19:46:25,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:25,158 INFO L462 AbstractCegarLoop]: Abstraction has 1034 states and 1529 transitions. [2019-10-13 19:46:25,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:46:25,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1529 transitions. [2019-10-13 19:46:25,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 19:46:25,164 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:25,165 INFO L380 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] [2019-10-13 19:46:25,165 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:25,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:25,165 INFO L82 PathProgramCache]: Analyzing trace with hash -790671312, now seen corresponding path program 1 times [2019-10-13 19:46:25,166 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:25,166 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242542537] [2019-10-13 19:46:25,166 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:25,166 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:25,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:25,564 WARN L191 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2019-10-13 19:46:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:25,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:25,636 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242542537] [2019-10-13 19:46:25,636 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:25,637 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:25,645 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380146542] [2019-10-13 19:46:25,646 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:25,646 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:25,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:25,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:25,647 INFO L87 Difference]: Start difference. First operand 1034 states and 1529 transitions. Second operand 4 states. [2019-10-13 19:46:27,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:27,868 INFO L93 Difference]: Finished difference Result 3056 states and 4517 transitions. [2019-10-13 19:46:27,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:46:27,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2019-10-13 19:46:27,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:27,881 INFO L225 Difference]: With dead ends: 3056 [2019-10-13 19:46:27,881 INFO L226 Difference]: Without dead ends: 2054 [2019-10-13 19:46:27,884 INFO L600 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 [2019-10-13 19:46:27,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2019-10-13 19:46:27,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1036. [2019-10-13 19:46:27,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2019-10-13 19:46:27,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1531 transitions. [2019-10-13 19:46:27,945 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1531 transitions. Word has length 158 [2019-10-13 19:46:27,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:27,946 INFO L462 AbstractCegarLoop]: Abstraction has 1036 states and 1531 transitions. [2019-10-13 19:46:27,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:27,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1531 transitions. [2019-10-13 19:46:27,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 19:46:27,950 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:27,951 INFO L380 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] [2019-10-13 19:46:27,951 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:27,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:27,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1966932605, now seen corresponding path program 1 times [2019-10-13 19:46:27,952 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:27,952 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218298937] [2019-10-13 19:46:27,952 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:27,953 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:27,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:28,609 WARN L191 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2019-10-13 19:46:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:28,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:28,685 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218298937] [2019-10-13 19:46:28,685 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:28,685 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:46:28,686 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54179593] [2019-10-13 19:46:28,687 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:46:28,688 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:28,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:46:28,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:46:28,689 INFO L87 Difference]: Start difference. First operand 1036 states and 1531 transitions. Second operand 5 states. [2019-10-13 19:46:30,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:30,280 INFO L93 Difference]: Finished difference Result 2054 states and 3037 transitions. [2019-10-13 19:46:30,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:46:30,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2019-10-13 19:46:30,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:30,287 INFO L225 Difference]: With dead ends: 2054 [2019-10-13 19:46:30,287 INFO L226 Difference]: Without dead ends: 1036 [2019-10-13 19:46:30,289 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:46:30,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2019-10-13 19:46:30,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1035. [2019-10-13 19:46:30,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2019-10-13 19:46:30,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1528 transitions. [2019-10-13 19:46:30,339 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1528 transitions. Word has length 159 [2019-10-13 19:46:30,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:30,340 INFO L462 AbstractCegarLoop]: Abstraction has 1035 states and 1528 transitions. [2019-10-13 19:46:30,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:46:30,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1528 transitions. [2019-10-13 19:46:30,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 19:46:30,343 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:30,343 INFO L380 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] [2019-10-13 19:46:30,343 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:30,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:30,344 INFO L82 PathProgramCache]: Analyzing trace with hash 745680526, now seen corresponding path program 1 times [2019-10-13 19:46:30,344 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:30,344 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949638812] [2019-10-13 19:46:30,345 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:30,345 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:30,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:30,732 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2019-10-13 19:46:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:30,794 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949638812] [2019-10-13 19:46:30,794 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:30,794 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:30,795 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323993839] [2019-10-13 19:46:30,796 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:30,796 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:30,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:30,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:30,797 INFO L87 Difference]: Start difference. First operand 1035 states and 1528 transitions. Second operand 4 states. [2019-10-13 19:46:33,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:33,634 INFO L93 Difference]: Finished difference Result 2834 states and 4197 transitions. [2019-10-13 19:46:33,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:46:33,635 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2019-10-13 19:46:33,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:33,646 INFO L225 Difference]: With dead ends: 2834 [2019-10-13 19:46:33,646 INFO L226 Difference]: Without dead ends: 1997 [2019-10-13 19:46:33,649 INFO L600 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 [2019-10-13 19:46:33,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2019-10-13 19:46:33,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1995. [2019-10-13 19:46:33,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2019-10-13 19:46:33,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2918 transitions. [2019-10-13 19:46:33,734 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2918 transitions. Word has length 159 [2019-10-13 19:46:33,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:33,734 INFO L462 AbstractCegarLoop]: Abstraction has 1995 states and 2918 transitions. [2019-10-13 19:46:33,735 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:33,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2918 transitions. [2019-10-13 19:46:33,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 19:46:33,739 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:33,740 INFO L380 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] [2019-10-13 19:46:33,740 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:33,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:33,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1379415471, now seen corresponding path program 1 times [2019-10-13 19:46:33,741 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:33,741 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093257277] [2019-10-13 19:46:33,741 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:33,741 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:33,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:34,156 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2019-10-13 19:46:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:34,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:34,202 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093257277] [2019-10-13 19:46:34,202 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:34,202 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:46:34,202 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216357770] [2019-10-13 19:46:34,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:46:34,203 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:34,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:46:34,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:46:34,204 INFO L87 Difference]: Start difference. First operand 1995 states and 2918 transitions. Second operand 5 states. [2019-10-13 19:46:35,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:35,503 INFO L93 Difference]: Finished difference Result 3337 states and 4898 transitions. [2019-10-13 19:46:35,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:46:35,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2019-10-13 19:46:35,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:35,513 INFO L225 Difference]: With dead ends: 3337 [2019-10-13 19:46:35,513 INFO L226 Difference]: Without dead ends: 1528 [2019-10-13 19:46:35,517 INFO L600 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 [2019-10-13 19:46:35,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2019-10-13 19:46:35,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1528. [2019-10-13 19:46:35,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1528 states. [2019-10-13 19:46:35,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 2228 transitions. [2019-10-13 19:46:35,587 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 2228 transitions. Word has length 159 [2019-10-13 19:46:35,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:35,588 INFO L462 AbstractCegarLoop]: Abstraction has 1528 states and 2228 transitions. [2019-10-13 19:46:35,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:46:35,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 2228 transitions. [2019-10-13 19:46:35,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-13 19:46:35,592 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:35,592 INFO L380 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] [2019-10-13 19:46:35,592 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:35,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:35,593 INFO L82 PathProgramCache]: Analyzing trace with hash -51426036, now seen corresponding path program 1 times [2019-10-13 19:46:35,593 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:35,593 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313255261] [2019-10-13 19:46:35,594 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:35,594 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:35,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:35,917 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2019-10-13 19:46:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:35,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:35,953 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313255261] [2019-10-13 19:46:35,953 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:35,953 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:35,953 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039868040] [2019-10-13 19:46:35,954 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:35,954 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:35,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:35,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:35,955 INFO L87 Difference]: Start difference. First operand 1528 states and 2228 transitions. Second operand 4 states. [2019-10-13 19:46:37,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:37,850 INFO L93 Difference]: Finished difference Result 3607 states and 5375 transitions. [2019-10-13 19:46:37,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:46:37,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2019-10-13 19:46:37,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:37,859 INFO L225 Difference]: With dead ends: 3607 [2019-10-13 19:46:37,859 INFO L226 Difference]: Without dead ends: 2268 [2019-10-13 19:46:37,862 INFO L600 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 [2019-10-13 19:46:37,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2019-10-13 19:46:37,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 1952. [2019-10-13 19:46:37,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1952 states. [2019-10-13 19:46:37,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2916 transitions. [2019-10-13 19:46:37,939 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2916 transitions. Word has length 161 [2019-10-13 19:46:37,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:37,939 INFO L462 AbstractCegarLoop]: Abstraction has 1952 states and 2916 transitions. [2019-10-13 19:46:37,940 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:37,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2916 transitions. [2019-10-13 19:46:37,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-13 19:46:37,943 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:37,943 INFO L380 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] [2019-10-13 19:46:37,944 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:37,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:37,944 INFO L82 PathProgramCache]: Analyzing trace with hash -541662678, now seen corresponding path program 1 times [2019-10-13 19:46:37,944 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:37,945 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092047537] [2019-10-13 19:46:37,945 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:37,945 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:37,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:38,224 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2019-10-13 19:46:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:38,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:38,260 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092047537] [2019-10-13 19:46:38,260 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:38,260 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:38,260 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339047116] [2019-10-13 19:46:38,261 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:38,261 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:38,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:38,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:38,262 INFO L87 Difference]: Start difference. First operand 1952 states and 2916 transitions. Second operand 4 states. [2019-10-13 19:46:40,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:40,063 INFO L93 Difference]: Finished difference Result 4665 states and 7121 transitions. [2019-10-13 19:46:40,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:46:40,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2019-10-13 19:46:40,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:40,075 INFO L225 Difference]: With dead ends: 4665 [2019-10-13 19:46:40,076 INFO L226 Difference]: Without dead ends: 2986 [2019-10-13 19:46:40,079 INFO L600 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 [2019-10-13 19:46:40,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2019-10-13 19:46:40,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 2706. [2019-10-13 19:46:40,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2706 states. [2019-10-13 19:46:40,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 4137 transitions. [2019-10-13 19:46:40,204 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 4137 transitions. Word has length 163 [2019-10-13 19:46:40,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:40,205 INFO L462 AbstractCegarLoop]: Abstraction has 2706 states and 4137 transitions. [2019-10-13 19:46:40,205 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:40,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 4137 transitions. [2019-10-13 19:46:40,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-13 19:46:40,209 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:40,209 INFO L380 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] [2019-10-13 19:46:40,210 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:40,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:40,210 INFO L82 PathProgramCache]: Analyzing trace with hash 911873176, now seen corresponding path program 1 times [2019-10-13 19:46:40,210 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:40,210 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863940546] [2019-10-13 19:46:40,211 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:40,211 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:40,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:40,595 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2019-10-13 19:46:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:40,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:40,642 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863940546] [2019-10-13 19:46:40,642 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:40,642 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:46:40,642 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299139274] [2019-10-13 19:46:40,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:46:40,643 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:40,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:46:40,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:46:40,644 INFO L87 Difference]: Start difference. First operand 2706 states and 4137 transitions. Second operand 6 states. [2019-10-13 19:46:40,920 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:46:42,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:42,492 INFO L93 Difference]: Finished difference Result 7601 states and 11754 transitions. [2019-10-13 19:46:42,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:46:42,492 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2019-10-13 19:46:42,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:42,515 INFO L225 Difference]: With dead ends: 7601 [2019-10-13 19:46:42,515 INFO L226 Difference]: Without dead ends: 5078 [2019-10-13 19:46:42,521 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:46:42,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5078 states. [2019-10-13 19:46:42,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5078 to 5076. [2019-10-13 19:46:42,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5076 states. [2019-10-13 19:46:42,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5076 states to 5076 states and 7791 transitions. [2019-10-13 19:46:42,747 INFO L78 Accepts]: Start accepts. Automaton has 5076 states and 7791 transitions. Word has length 164 [2019-10-13 19:46:42,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:42,747 INFO L462 AbstractCegarLoop]: Abstraction has 5076 states and 7791 transitions. [2019-10-13 19:46:42,747 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:46:42,748 INFO L276 IsEmpty]: Start isEmpty. Operand 5076 states and 7791 transitions. [2019-10-13 19:46:42,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-13 19:46:42,753 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:42,753 INFO L380 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] [2019-10-13 19:46:42,753 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:42,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:42,754 INFO L82 PathProgramCache]: Analyzing trace with hash 2112908957, now seen corresponding path program 1 times [2019-10-13 19:46:42,760 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:42,760 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316961129] [2019-10-13 19:46:42,760 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:42,761 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:42,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:43,233 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2019-10-13 19:46:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:43,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:43,297 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316961129] [2019-10-13 19:46:43,297 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:43,298 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:46:43,298 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344100307] [2019-10-13 19:46:43,298 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:46:43,299 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:43,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:46:43,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:46:43,299 INFO L87 Difference]: Start difference. First operand 5076 states and 7791 transitions. Second operand 5 states. [2019-10-13 19:46:45,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:45,785 INFO L93 Difference]: Finished difference Result 13239 states and 20333 transitions. [2019-10-13 19:46:45,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:46:45,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2019-10-13 19:46:45,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:45,817 INFO L225 Difference]: With dead ends: 13239 [2019-10-13 19:46:45,817 INFO L226 Difference]: Without dead ends: 8194 [2019-10-13 19:46:45,827 INFO L600 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 [2019-10-13 19:46:45,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8194 states. [2019-10-13 19:46:46,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8194 to 8192. [2019-10-13 19:46:46,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8192 states. [2019-10-13 19:46:46,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8192 states to 8192 states and 12471 transitions. [2019-10-13 19:46:46,190 INFO L78 Accepts]: Start accepts. Automaton has 8192 states and 12471 transitions. Word has length 164 [2019-10-13 19:46:46,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:46,191 INFO L462 AbstractCegarLoop]: Abstraction has 8192 states and 12471 transitions. [2019-10-13 19:46:46,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:46:46,191 INFO L276 IsEmpty]: Start isEmpty. Operand 8192 states and 12471 transitions. [2019-10-13 19:46:46,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 19:46:46,198 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:46,198 INFO L380 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] [2019-10-13 19:46:46,199 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:46,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:46,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1008257189, now seen corresponding path program 1 times [2019-10-13 19:46:46,200 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:46,200 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616656923] [2019-10-13 19:46:46,200 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:46,200 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:46,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:46,499 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2019-10-13 19:46:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:46,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:46,543 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616656923] [2019-10-13 19:46:46,543 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:46,543 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:46,543 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138115113] [2019-10-13 19:46:46,544 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:46,544 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:46,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:46,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:46,544 INFO L87 Difference]: Start difference. First operand 8192 states and 12471 transitions. Second operand 4 states. [2019-10-13 19:46:48,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:48,335 INFO L93 Difference]: Finished difference Result 20555 states and 31330 transitions. [2019-10-13 19:46:48,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:46:48,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2019-10-13 19:46:48,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:48,364 INFO L225 Difference]: With dead ends: 20555 [2019-10-13 19:46:48,365 INFO L226 Difference]: Without dead ends: 12739 [2019-10-13 19:46:48,380 INFO L600 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 [2019-10-13 19:46:48,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12739 states. [2019-10-13 19:46:48,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12739 to 12737. [2019-10-13 19:46:48,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12737 states. [2019-10-13 19:46:48,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12737 states to 12737 states and 19158 transitions. [2019-10-13 19:46:49,000 INFO L78 Accepts]: Start accepts. Automaton has 12737 states and 19158 transitions. Word has length 166 [2019-10-13 19:46:49,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:49,000 INFO L462 AbstractCegarLoop]: Abstraction has 12737 states and 19158 transitions. [2019-10-13 19:46:49,000 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:49,000 INFO L276 IsEmpty]: Start isEmpty. Operand 12737 states and 19158 transitions. [2019-10-13 19:46:49,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-13 19:46:49,011 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:49,011 INFO L380 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] [2019-10-13 19:46:49,011 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:49,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:49,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1356015054, now seen corresponding path program 1 times [2019-10-13 19:46:49,012 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:49,012 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342642011] [2019-10-13 19:46:49,012 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:49,012 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:49,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:49,280 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2019-10-13 19:46:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:49,315 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342642011] [2019-10-13 19:46:49,316 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:49,316 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:49,316 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672544322] [2019-10-13 19:46:49,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:49,317 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:49,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:49,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:49,317 INFO L87 Difference]: Start difference. First operand 12737 states and 19158 transitions. Second operand 4 states.