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_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:45:15,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:45:15,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:45:15,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:45:15,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:45:15,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:45:15,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:45:15,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:45:15,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:45:15,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:45:15,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:45:15,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:45:15,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:45:15,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:45:15,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:45:15,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:45:15,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:45:15,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:45:15,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:45:15,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:45:15,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:45:15,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:45:15,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:45:15,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:45:15,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:45:15,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:45:15,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:45:15,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:45:15,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:45:15,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:45:15,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:45:15,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:45:15,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:45:15,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:45:15,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:45:15,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:45:15,596 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 19:45:15,610 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:45:15,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:45:15,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:45:15,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:45:15,612 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:45:15,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:45:15,612 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:45:15,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:45:15,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:45:15,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:45:15,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:45:15,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:45:15,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:45:15,614 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:45:15,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:45:15,614 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:45:15,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:45:15,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:45:15,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:45:15,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:45:15,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:45:15,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:45:15,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:45:15,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:45:15,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:45:15,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:45:15,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:45:15,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:45:15,617 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:45:15,895 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:45:15,913 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:45:15,917 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:45:15,918 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:45:15,919 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:45:15,919 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-10-13 19:45:16,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6ea381da/e8d023395aa949ebb9977c0dbb0cb302/FLAGe3a39f22c [2019-10-13 19:45:16,581 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:45:16,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-10-13 19:45:16,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6ea381da/e8d023395aa949ebb9977c0dbb0cb302/FLAGe3a39f22c [2019-10-13 19:45:16,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6ea381da/e8d023395aa949ebb9977c0dbb0cb302 [2019-10-13 19:45:16,941 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:45:16,943 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:45:16,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:45:16,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:45:16,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:45:16,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:16" (1/1) ... [2019-10-13 19:45:16,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fd793fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:16, skipping insertion in model container [2019-10-13 19:45:16,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:16" (1/1) ... [2019-10-13 19:45:16,959 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:45:17,022 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:45:17,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:45:17,520 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:45:17,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:45:17,625 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:45:17,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:17 WrapperNode [2019-10-13 19:45:17,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:45:17,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:45:17,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:45:17,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:45:17,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:17" (1/1) ... [2019-10-13 19:45:17,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:17" (1/1) ... [2019-10-13 19:45:17,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:17" (1/1) ... [2019-10-13 19:45:17,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:17" (1/1) ... [2019-10-13 19:45:17,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:17" (1/1) ... [2019-10-13 19:45:17,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:17" (1/1) ... [2019-10-13 19:45:17,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:17" (1/1) ... [2019-10-13 19:45:17,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:45:17,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:45:17,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:45:17,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:45:17,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:17" (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 19:45:17,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:45:17,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:45:17,757 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:45:17,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:45:17,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-13 19:45:17,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-13 19:45:17,757 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-13 19:45:17,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:45:17,757 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-13 19:45:17,758 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-13 19:45:17,758 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-13 19:45:17,758 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-13 19:45:17,758 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-13 19:45:17,758 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-13 19:45:17,759 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-13 19:45:17,759 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:45:17,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:45:17,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:45:18,581 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:45:18,581 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:45:18,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:18 BoogieIcfgContainer [2019-10-13 19:45:18,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:45:18,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:45:18,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:45:18,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:45:18,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:45:16" (1/3) ... [2019-10-13 19:45:18,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69512ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:18, skipping insertion in model container [2019-10-13 19:45:18,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:17" (2/3) ... [2019-10-13 19:45:18,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69512ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:18, skipping insertion in model container [2019-10-13 19:45:18,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:18" (3/3) ... [2019-10-13 19:45:18,591 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-10-13 19:45:18,601 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:45:18,610 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:45:18,622 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:45:18,649 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:45:18,650 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:45:18,650 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:45:18,650 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:45:18,650 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:45:18,650 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:45:18,650 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:45:18,650 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:45:18,670 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states. [2019-10-13 19:45:18,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 19:45:18,678 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:18,680 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] [2019-10-13 19:45:18,682 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:18,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:18,688 INFO L82 PathProgramCache]: Analyzing trace with hash 273290580, now seen corresponding path program 1 times [2019-10-13 19:45:18,696 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:18,696 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814907853] [2019-10-13 19:45:18,696 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:18,697 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:18,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:19,320 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-13 19:45:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:19,365 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 19:45:19,366 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814907853] [2019-10-13 19:45:19,367 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:19,367 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:45:19,367 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303609336] [2019-10-13 19:45:19,379 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:45:19,379 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:19,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:45:19,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:45:19,398 INFO L87 Difference]: Start difference. First operand 153 states. Second operand 7 states. [2019-10-13 19:45:19,612 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-13 19:45:20,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:20,731 INFO L93 Difference]: Finished difference Result 731 states and 1151 transitions. [2019-10-13 19:45:20,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:45:20,733 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2019-10-13 19:45:20,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:20,755 INFO L225 Difference]: With dead ends: 731 [2019-10-13 19:45:20,755 INFO L226 Difference]: Without dead ends: 632 [2019-10-13 19:45:20,760 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:45:20,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2019-10-13 19:45:20,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 425. [2019-10-13 19:45:20,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2019-10-13 19:45:20,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 641 transitions. [2019-10-13 19:45:20,859 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 641 transitions. Word has length 53 [2019-10-13 19:45:20,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:20,860 INFO L462 AbstractCegarLoop]: Abstraction has 425 states and 641 transitions. [2019-10-13 19:45:20,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:45:20,860 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 641 transitions. [2019-10-13 19:45:20,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-13 19:45:20,863 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:20,863 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] [2019-10-13 19:45:20,863 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:20,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:20,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1842914518, now seen corresponding path program 1 times [2019-10-13 19:45:20,864 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:20,864 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882911915] [2019-10-13 19:45:20,865 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:20,865 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:20,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:21,174 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-13 19:45:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:21,199 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 19:45:21,200 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882911915] [2019-10-13 19:45:21,200 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:21,200 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:21,201 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152578824] [2019-10-13 19:45:21,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:21,203 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:21,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:21,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:21,204 INFO L87 Difference]: Start difference. First operand 425 states and 641 transitions. Second operand 4 states. [2019-10-13 19:45:21,349 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-10-13 19:45:21,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:21,912 INFO L93 Difference]: Finished difference Result 1108 states and 1693 transitions. [2019-10-13 19:45:21,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:45:21,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2019-10-13 19:45:21,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:21,918 INFO L225 Difference]: With dead ends: 1108 [2019-10-13 19:45:21,918 INFO L226 Difference]: Without dead ends: 751 [2019-10-13 19:45:21,922 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:45:21,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2019-10-13 19:45:21,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 749. [2019-10-13 19:45:21,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2019-10-13 19:45:21,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1125 transitions. [2019-10-13 19:45:21,994 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1125 transitions. Word has length 56 [2019-10-13 19:45:21,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:21,996 INFO L462 AbstractCegarLoop]: Abstraction has 749 states and 1125 transitions. [2019-10-13 19:45:21,996 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:45:21,996 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1125 transitions. [2019-10-13 19:45:22,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-13 19:45:22,007 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:22,007 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] [2019-10-13 19:45:22,007 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:22,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:22,008 INFO L82 PathProgramCache]: Analyzing trace with hash -315457832, now seen corresponding path program 1 times [2019-10-13 19:45:22,008 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:22,009 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341412737] [2019-10-13 19:45:22,010 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:22,010 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:22,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:22,242 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-13 19:45:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:22,264 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 19:45:22,264 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341412737] [2019-10-13 19:45:22,265 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:22,265 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:22,265 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401812344] [2019-10-13 19:45:22,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:22,266 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:22,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:22,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:22,267 INFO L87 Difference]: Start difference. First operand 749 states and 1125 transitions. Second operand 4 states. [2019-10-13 19:45:22,393 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-10-13 19:45:22,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:22,894 INFO L93 Difference]: Finished difference Result 2012 states and 3038 transitions. [2019-10-13 19:45:22,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:45:22,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2019-10-13 19:45:22,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:22,902 INFO L225 Difference]: With dead ends: 2012 [2019-10-13 19:45:22,902 INFO L226 Difference]: Without dead ends: 1339 [2019-10-13 19:45:22,905 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:45:22,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2019-10-13 19:45:22,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1337. [2019-10-13 19:45:22,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1337 states. [2019-10-13 19:45:22,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1974 transitions. [2019-10-13 19:45:22,979 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1974 transitions. Word has length 56 [2019-10-13 19:45:22,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:22,980 INFO L462 AbstractCegarLoop]: Abstraction has 1337 states and 1974 transitions. [2019-10-13 19:45:22,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:45:22,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1974 transitions. [2019-10-13 19:45:22,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:45:22,982 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:22,982 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] [2019-10-13 19:45:22,983 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:22,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:22,983 INFO L82 PathProgramCache]: Analyzing trace with hash -622080838, now seen corresponding path program 1 times [2019-10-13 19:45:22,984 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:22,984 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317951833] [2019-10-13 19:45:22,984 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:22,984 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:22,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:23,369 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-13 19:45:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:23,393 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 19:45:23,393 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317951833] [2019-10-13 19:45:23,393 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:23,394 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:45:23,394 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190141217] [2019-10-13 19:45:23,394 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:45:23,395 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:23,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:45:23,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:45:23,395 INFO L87 Difference]: Start difference. First operand 1337 states and 1974 transitions. Second operand 11 states. [2019-10-13 19:45:23,592 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2019-10-13 19:45:26,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:26,697 INFO L93 Difference]: Finished difference Result 7876 states and 11683 transitions. [2019-10-13 19:45:26,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-13 19:45:26,698 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2019-10-13 19:45:26,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:26,748 INFO L225 Difference]: With dead ends: 7876 [2019-10-13 19:45:26,749 INFO L226 Difference]: Without dead ends: 7375 [2019-10-13 19:45:26,753 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2019-10-13 19:45:26,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7375 states. [2019-10-13 19:45:26,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7375 to 1362. [2019-10-13 19:45:26,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1362 states. [2019-10-13 19:45:26,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 2006 transitions. [2019-10-13 19:45:26,962 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 2006 transitions. Word has length 57 [2019-10-13 19:45:26,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:26,962 INFO L462 AbstractCegarLoop]: Abstraction has 1362 states and 2006 transitions. [2019-10-13 19:45:26,962 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 19:45:26,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 2006 transitions. [2019-10-13 19:45:26,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-13 19:45:26,964 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:26,964 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] [2019-10-13 19:45:26,964 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:26,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:26,965 INFO L82 PathProgramCache]: Analyzing trace with hash -993204644, now seen corresponding path program 1 times [2019-10-13 19:45:26,965 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:26,965 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219131253] [2019-10-13 19:45:26,965 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:26,966 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:26,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:27,241 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-13 19:45:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:27,263 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 19:45:27,264 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219131253] [2019-10-13 19:45:27,264 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:27,264 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:45:27,264 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731880236] [2019-10-13 19:45:27,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:45:27,266 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:27,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:45:27,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:45:27,267 INFO L87 Difference]: Start difference. First operand 1362 states and 2006 transitions. Second operand 10 states. [2019-10-13 19:45:27,506 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2019-10-13 19:45:30,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:30,639 INFO L93 Difference]: Finished difference Result 8646 states and 12825 transitions. [2019-10-13 19:45:30,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-13 19:45:30,640 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2019-10-13 19:45:30,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:30,678 INFO L225 Difference]: With dead ends: 8646 [2019-10-13 19:45:30,678 INFO L226 Difference]: Without dead ends: 7508 [2019-10-13 19:45:30,682 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2019-10-13 19:45:30,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7508 states. [2019-10-13 19:45:30,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7508 to 1401. [2019-10-13 19:45:30,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1401 states. [2019-10-13 19:45:30,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 2057 transitions. [2019-10-13 19:45:30,881 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 2057 transitions. Word has length 58 [2019-10-13 19:45:30,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:30,881 INFO L462 AbstractCegarLoop]: Abstraction has 1401 states and 2057 transitions. [2019-10-13 19:45:30,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:45:30,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 2057 transitions. [2019-10-13 19:45:30,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-13 19:45:30,884 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:30,884 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] [2019-10-13 19:45:30,884 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:30,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:30,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1499714113, now seen corresponding path program 1 times [2019-10-13 19:45:30,885 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:30,885 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677320495] [2019-10-13 19:45:30,886 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:30,886 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:30,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:31,137 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 19:45:31,137 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677320495] [2019-10-13 19:45:31,138 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:31,138 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:45:31,138 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172619268] [2019-10-13 19:45:31,139 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:45:31,139 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:31,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:45:31,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:45:31,140 INFO L87 Difference]: Start difference. First operand 1401 states and 2057 transitions. Second operand 8 states. [2019-10-13 19:45:31,312 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-10-13 19:45:32,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:32,625 INFO L93 Difference]: Finished difference Result 5866 states and 8795 transitions. [2019-10-13 19:45:32,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:45:32,625 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2019-10-13 19:45:32,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:32,651 INFO L225 Difference]: With dead ends: 5866 [2019-10-13 19:45:32,651 INFO L226 Difference]: Without dead ends: 5365 [2019-10-13 19:45:32,654 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:45:32,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5365 states. [2019-10-13 19:45:32,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5365 to 1382. [2019-10-13 19:45:32,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1382 states. [2019-10-13 19:45:32,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 2033 transitions. [2019-10-13 19:45:32,894 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 2033 transitions. Word has length 58 [2019-10-13 19:45:32,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:32,896 INFO L462 AbstractCegarLoop]: Abstraction has 1382 states and 2033 transitions. [2019-10-13 19:45:32,896 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:45:32,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 2033 transitions. [2019-10-13 19:45:32,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-13 19:45:32,898 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:32,899 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] [2019-10-13 19:45:32,899 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:32,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:32,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1924616750, now seen corresponding path program 1 times [2019-10-13 19:45:32,900 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:32,901 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344089056] [2019-10-13 19:45:32,901 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:32,901 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:32,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:33,175 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-13 19:45:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:33,192 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 19:45:33,192 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344089056] [2019-10-13 19:45:33,193 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:33,193 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:45:33,193 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735448320] [2019-10-13 19:45:33,194 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:45:33,195 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:33,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:45:33,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:45:33,196 INFO L87 Difference]: Start difference. First operand 1382 states and 2033 transitions. Second operand 8 states. [2019-10-13 19:45:33,376 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-10-13 19:45:34,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:34,533 INFO L93 Difference]: Finished difference Result 5664 states and 8377 transitions. [2019-10-13 19:45:34,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:45:34,534 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2019-10-13 19:45:34,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:34,552 INFO L225 Difference]: With dead ends: 5664 [2019-10-13 19:45:34,553 INFO L226 Difference]: Without dead ends: 4526 [2019-10-13 19:45:34,556 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:45:34,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4526 states. [2019-10-13 19:45:34,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4526 to 1363. [2019-10-13 19:45:34,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2019-10-13 19:45:34,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 2006 transitions. [2019-10-13 19:45:34,745 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 2006 transitions. Word has length 59 [2019-10-13 19:45:34,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:34,746 INFO L462 AbstractCegarLoop]: Abstraction has 1363 states and 2006 transitions. [2019-10-13 19:45:34,746 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:45:34,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 2006 transitions. [2019-10-13 19:45:34,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-13 19:45:34,748 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:34,748 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] [2019-10-13 19:45:34,748 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:34,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:34,749 INFO L82 PathProgramCache]: Analyzing trace with hash -157395530, now seen corresponding path program 1 times [2019-10-13 19:45:34,749 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:34,749 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786555104] [2019-10-13 19:45:34,749 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:34,750 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:34,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:35,029 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 19:45:35,030 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786555104] [2019-10-13 19:45:35,030 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:35,030 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:45:35,030 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672278340] [2019-10-13 19:45:35,031 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:45:35,031 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:35,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:45:35,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:45:35,032 INFO L87 Difference]: Start difference. First operand 1363 states and 2006 transitions. Second operand 10 states. [2019-10-13 19:45:35,176 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-13 19:45:37,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:37,166 INFO L93 Difference]: Finished difference Result 7072 states and 10472 transitions. [2019-10-13 19:45:37,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:45:37,166 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2019-10-13 19:45:37,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:37,178 INFO L225 Difference]: With dead ends: 7072 [2019-10-13 19:45:37,178 INFO L226 Difference]: Without dead ends: 5799 [2019-10-13 19:45:37,182 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:45:37,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5799 states. [2019-10-13 19:45:37,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5799 to 3842. [2019-10-13 19:45:37,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3842 states. [2019-10-13 19:45:37,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3842 states to 3842 states and 5718 transitions. [2019-10-13 19:45:37,602 INFO L78 Accepts]: Start accepts. Automaton has 3842 states and 5718 transitions. Word has length 59 [2019-10-13 19:45:37,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:37,602 INFO L462 AbstractCegarLoop]: Abstraction has 3842 states and 5718 transitions. [2019-10-13 19:45:37,602 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:45:37,603 INFO L276 IsEmpty]: Start isEmpty. Operand 3842 states and 5718 transitions. [2019-10-13 19:45:37,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-13 19:45:37,605 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:37,605 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] [2019-10-13 19:45:37,605 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:37,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:37,606 INFO L82 PathProgramCache]: Analyzing trace with hash 2127126793, now seen corresponding path program 1 times [2019-10-13 19:45:37,606 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:37,606 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618521242] [2019-10-13 19:45:37,606 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:37,606 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:37,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:37,833 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-13 19:45:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:37,851 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 19:45:37,852 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618521242] [2019-10-13 19:45:37,852 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:37,852 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:45:37,852 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514284588] [2019-10-13 19:45:37,854 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:45:37,855 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:37,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:45:37,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:45:37,856 INFO L87 Difference]: Start difference. First operand 3842 states and 5718 transitions. Second operand 10 states. [2019-10-13 19:45:38,053 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-13 19:45:41,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:41,014 INFO L93 Difference]: Finished difference Result 20312 states and 30202 transitions. [2019-10-13 19:45:41,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:45:41,018 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2019-10-13 19:45:41,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:41,054 INFO L225 Difference]: With dead ends: 20312 [2019-10-13 19:45:41,054 INFO L226 Difference]: Without dead ends: 16960 [2019-10-13 19:45:41,065 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:45:41,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16960 states. [2019-10-13 19:45:42,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16960 to 11727. [2019-10-13 19:45:42,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11727 states. [2019-10-13 19:45:42,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11727 states to 11727 states and 17416 transitions. [2019-10-13 19:45:42,374 INFO L78 Accepts]: Start accepts. Automaton has 11727 states and 17416 transitions. Word has length 59 [2019-10-13 19:45:42,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:42,374 INFO L462 AbstractCegarLoop]: Abstraction has 11727 states and 17416 transitions. [2019-10-13 19:45:42,374 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:45:42,374 INFO L276 IsEmpty]: Start isEmpty. Operand 11727 states and 17416 transitions. [2019-10-13 19:45:42,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-13 19:45:42,378 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:42,379 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] [2019-10-13 19:45:42,379 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:42,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:42,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1033600256, now seen corresponding path program 1 times [2019-10-13 19:45:42,379 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:42,380 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398951563] [2019-10-13 19:45:42,380 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:42,380 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:42,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:42,568 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-13 19:45:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:42,583 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 19:45:42,586 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398951563] [2019-10-13 19:45:42,586 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:42,586 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:45:42,587 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42517057] [2019-10-13 19:45:42,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:45:42,587 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:42,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:45:42,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:45:42,588 INFO L87 Difference]: Start difference. First operand 11727 states and 17416 transitions. Second operand 7 states. [2019-10-13 19:45:42,720 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-13 19:45:44,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:44,544 INFO L93 Difference]: Finished difference Result 23775 states and 35310 transitions. [2019-10-13 19:45:44,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:45:44,544 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2019-10-13 19:45:44,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:44,575 INFO L225 Difference]: With dead ends: 23775 [2019-10-13 19:45:44,575 INFO L226 Difference]: Without dead ends: 12940 [2019-10-13 19:45:44,593 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:45:44,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12940 states. [2019-10-13 19:45:45,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12940 to 8396. [2019-10-13 19:45:45,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8396 states. [2019-10-13 19:45:45,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8396 states to 8396 states and 12355 transitions. [2019-10-13 19:45:45,593 INFO L78 Accepts]: Start accepts. Automaton has 8396 states and 12355 transitions. Word has length 60 [2019-10-13 19:45:45,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:45,593 INFO L462 AbstractCegarLoop]: Abstraction has 8396 states and 12355 transitions. [2019-10-13 19:45:45,593 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:45:45,593 INFO L276 IsEmpty]: Start isEmpty. Operand 8396 states and 12355 transitions. [2019-10-13 19:45:45,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-13 19:45:45,595 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:45,596 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] [2019-10-13 19:45:45,596 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:45,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:45,596 INFO L82 PathProgramCache]: Analyzing trace with hash -976844717, now seen corresponding path program 1 times [2019-10-13 19:45:45,596 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:45,597 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769610647] [2019-10-13 19:45:45,597 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:45,597 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:45,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:45,765 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-13 19:45:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:45,781 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 19:45:45,782 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769610647] [2019-10-13 19:45:45,782 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:45,782 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:45:45,782 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249035244] [2019-10-13 19:45:45,783 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:45:45,783 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:45,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:45:45,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:45:45,784 INFO L87 Difference]: Start difference. First operand 8396 states and 12355 transitions. Second operand 7 states. [2019-10-13 19:45:45,916 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-13 19:45:47,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:47,787 INFO L93 Difference]: Finished difference Result 20131 states and 29816 transitions. [2019-10-13 19:45:47,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:45:47,787 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2019-10-13 19:45:47,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:47,808 INFO L225 Difference]: With dead ends: 20131 [2019-10-13 19:45:47,808 INFO L226 Difference]: Without dead ends: 12331 [2019-10-13 19:45:47,822 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:45:47,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12331 states. [2019-10-13 19:45:48,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12331 to 7655. [2019-10-13 19:45:48,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7655 states. [2019-10-13 19:45:48,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7655 states to 7655 states and 11188 transitions. [2019-10-13 19:45:48,838 INFO L78 Accepts]: Start accepts. Automaton has 7655 states and 11188 transitions. Word has length 60 [2019-10-13 19:45:48,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:48,839 INFO L462 AbstractCegarLoop]: Abstraction has 7655 states and 11188 transitions. [2019-10-13 19:45:48,839 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:45:48,839 INFO L276 IsEmpty]: Start isEmpty. Operand 7655 states and 11188 transitions. [2019-10-13 19:45:48,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-13 19:45:48,842 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:48,842 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] [2019-10-13 19:45:48,843 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:48,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:48,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1274910523, now seen corresponding path program 1 times [2019-10-13 19:45:48,843 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:48,844 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884180961] [2019-10-13 19:45:48,844 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:48,844 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:48,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:49,005 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 19:45:49,005 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884180961] [2019-10-13 19:45:49,006 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:49,006 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:45:49,006 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350786436] [2019-10-13 19:45:49,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:45:49,007 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:49,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:45:49,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:45:49,007 INFO L87 Difference]: Start difference. First operand 7655 states and 11188 transitions. Second operand 6 states. [2019-10-13 19:45:49,148 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-13 19:45:51,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:51,256 INFO L93 Difference]: Finished difference Result 18506 states and 26953 transitions. [2019-10-13 19:45:51,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:45:51,258 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2019-10-13 19:45:51,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:51,275 INFO L225 Difference]: With dead ends: 18506 [2019-10-13 19:45:51,275 INFO L226 Difference]: Without dead ends: 10932 [2019-10-13 19:45:51,289 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:45:51,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10932 states.