/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:14:54,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:14:54,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:14:54,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:14:54,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:14:54,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:14:54,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:14:54,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:14:54,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:14:54,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:14:54,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:14:54,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:14:54,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:14:54,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:14:54,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:14:54,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:14:54,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:14:54,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:14:54,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:14:54,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:14:54,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:14:54,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:14:54,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:14:54,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:14:54,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:14:54,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:14:54,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:14:54,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:14:54,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:14:54,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:14:54,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:14:54,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:14:54,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:14:54,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:14:54,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:14:54,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:14:54,439 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 22:14:54,453 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:14:54,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:14:54,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:14:54,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:14:54,455 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:14:54,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:14:54,456 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:14:54,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:14:54,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:14:54,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:14:54,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:14:54,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:14:54,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:14:54,457 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:14:54,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:14:54,457 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:14:54,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:14:54,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:14:54,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:14:54,458 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:14:54,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:14:54,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:14:54,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:14:54,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:14:54,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:14:54,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:14:54,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:14:54,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:14:54,460 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:14:54,726 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:14:54,739 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:14:54,744 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:14:54,746 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:14:54,746 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:14:54,747 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2019-11-06 22:14:54,823 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c9761041/8e3731f13b084962a309b242fc01e12d/FLAG8d3ad1947 [2019-11-06 22:14:55,370 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:14:55,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2019-11-06 22:14:55,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c9761041/8e3731f13b084962a309b242fc01e12d/FLAG8d3ad1947 [2019-11-06 22:14:55,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c9761041/8e3731f13b084962a309b242fc01e12d [2019-11-06 22:14:55,682 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:14:55,683 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:14:55,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:14:55,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:14:55,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:14:55,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:14:55" (1/1) ... [2019-11-06 22:14:55,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ee4954f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:55, skipping insertion in model container [2019-11-06 22:14:55,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:14:55" (1/1) ... [2019-11-06 22:14:55,700 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:14:55,764 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:14:56,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:14:56,248 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:14:56,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:14:56,416 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:14:56,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:56 WrapperNode [2019-11-06 22:14:56,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:14:56,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:14:56,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:14:56,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:14:56,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:56" (1/1) ... [2019-11-06 22:14:56,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:56" (1/1) ... [2019-11-06 22:14:56,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:56" (1/1) ... [2019-11-06 22:14:56,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:56" (1/1) ... [2019-11-06 22:14:56,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:56" (1/1) ... [2019-11-06 22:14:56,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:56" (1/1) ... [2019-11-06 22:14:56,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:56" (1/1) ... [2019-11-06 22:14:56,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:14:56,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:14:56,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:14:56,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:14:56,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:14:56,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:14:56,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:14:56,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:14:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:14:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-06 22:14:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-11-06 22:14:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-06 22:14:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-11-06 22:14:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:14:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-11-06 22:14:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-11-06 22:14:56,613 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-11-06 22:14:56,613 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-11-06 22:14:56,613 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-11-06 22:14:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-11-06 22:14:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-06 22:14:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:14:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:14:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:14:57,950 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:14:57,951 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 22:14:57,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:14:57 BoogieIcfgContainer [2019-11-06 22:14:57,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:14:57,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:14:57,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:14:57,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:14:57,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:14:55" (1/3) ... [2019-11-06 22:14:57,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1243aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:14:57, skipping insertion in model container [2019-11-06 22:14:57,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:56" (2/3) ... [2019-11-06 22:14:57,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1243aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:14:57, skipping insertion in model container [2019-11-06 22:14:57,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:14:57" (3/3) ... [2019-11-06 22:14:57,970 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2019-11-06 22:14:57,980 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:14:58,008 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:14:58,025 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:14:58,071 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:14:58,071 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:14:58,071 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:14:58,072 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:14:58,072 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:14:58,072 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:14:58,072 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:14:58,072 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:14:58,120 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states. [2019-11-06 22:14:58,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-11-06 22:14:58,143 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:58,144 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:14:58,146 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:58,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:58,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1942738218, now seen corresponding path program 1 times [2019-11-06 22:14:58,160 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:58,160 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136627948] [2019-11-06 22:14:58,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:58,984 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 22:14:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:59,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:14:59,054 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136627948] [2019-11-06 22:14:59,055 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:59,056 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:14:59,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261213522] [2019-11-06 22:14:59,066 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:14:59,066 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:59,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:14:59,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:14:59,084 INFO L87 Difference]: Start difference. First operand 252 states. Second operand 4 states. [2019-11-06 22:14:59,418 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2019-11-06 22:15:00,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:00,680 INFO L93 Difference]: Finished difference Result 509 states and 869 transitions. [2019-11-06 22:15:00,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:15:00,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2019-11-06 22:15:00,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:00,706 INFO L225 Difference]: With dead ends: 509 [2019-11-06 22:15:00,706 INFO L226 Difference]: Without dead ends: 375 [2019-11-06 22:15:00,710 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:15:00,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2019-11-06 22:15:00,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 373. [2019-11-06 22:15:00,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2019-11-06 22:15:00,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 566 transitions. [2019-11-06 22:15:00,785 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 566 transitions. Word has length 105 [2019-11-06 22:15:00,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:00,786 INFO L462 AbstractCegarLoop]: Abstraction has 373 states and 566 transitions. [2019-11-06 22:15:00,787 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:15:00,787 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 566 transitions. [2019-11-06 22:15:00,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-11-06 22:15:00,790 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:00,790 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:15:00,790 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:00,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:00,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1562873963, now seen corresponding path program 1 times [2019-11-06 22:15:00,791 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:00,791 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577553653] [2019-11-06 22:15:00,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:01,395 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 22:15:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:01,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:01,431 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577553653] [2019-11-06 22:15:01,432 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:01,432 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:15:01,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128902060] [2019-11-06 22:15:01,434 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:15:01,434 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:01,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:15:01,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:15:01,435 INFO L87 Difference]: Start difference. First operand 373 states and 566 transitions. Second operand 5 states. [2019-11-06 22:15:02,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:02,989 INFO L93 Difference]: Finished difference Result 1077 states and 1633 transitions. [2019-11-06 22:15:02,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:15:02,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2019-11-06 22:15:02,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:02,996 INFO L225 Difference]: With dead ends: 1077 [2019-11-06 22:15:02,997 INFO L226 Difference]: Without dead ends: 717 [2019-11-06 22:15:03,000 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:15:03,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2019-11-06 22:15:03,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 715. [2019-11-06 22:15:03,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 715 states. [2019-11-06 22:15:03,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1076 transitions. [2019-11-06 22:15:03,062 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1076 transitions. Word has length 105 [2019-11-06 22:15:03,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:03,063 INFO L462 AbstractCegarLoop]: Abstraction has 715 states and 1076 transitions. [2019-11-06 22:15:03,063 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:15:03,063 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1076 transitions. [2019-11-06 22:15:03,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-11-06 22:15:03,067 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:03,067 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:15:03,068 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:03,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:03,068 INFO L82 PathProgramCache]: Analyzing trace with hash 878256033, now seen corresponding path program 1 times [2019-11-06 22:15:03,068 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:03,069 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683185535] [2019-11-06 22:15:03,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:03,329 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 22:15:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:03,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:03,352 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683185535] [2019-11-06 22:15:03,352 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:03,353 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:15:03,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545119654] [2019-11-06 22:15:03,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:15:03,354 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:03,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:15:03,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:03,355 INFO L87 Difference]: Start difference. First operand 715 states and 1076 transitions. Second operand 4 states. [2019-11-06 22:15:05,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:05,278 INFO L93 Difference]: Finished difference Result 2099 states and 3158 transitions. [2019-11-06 22:15:05,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:15:05,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2019-11-06 22:15:05,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:05,290 INFO L225 Difference]: With dead ends: 2099 [2019-11-06 22:15:05,290 INFO L226 Difference]: Without dead ends: 1416 [2019-11-06 22:15:05,294 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:05,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2019-11-06 22:15:05,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 717. [2019-11-06 22:15:05,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-11-06 22:15:05,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1078 transitions. [2019-11-06 22:15:05,375 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1078 transitions. Word has length 106 [2019-11-06 22:15:05,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:05,378 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 1078 transitions. [2019-11-06 22:15:05,378 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:15:05,378 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1078 transitions. [2019-11-06 22:15:05,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-11-06 22:15:05,392 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:05,392 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:15:05,394 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:05,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:05,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1289386322, now seen corresponding path program 1 times [2019-11-06 22:15:05,395 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:05,396 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132369908] [2019-11-06 22:15:05,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:05,809 WARN L191 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 22:15:05,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:05,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:05,851 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132369908] [2019-11-06 22:15:05,851 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:05,852 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:15:05,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142720510] [2019-11-06 22:15:05,854 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:15:05,854 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:05,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:15:05,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:05,855 INFO L87 Difference]: Start difference. First operand 717 states and 1078 transitions. Second operand 4 states. [2019-11-06 22:15:07,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:07,329 INFO L93 Difference]: Finished difference Result 1629 states and 2536 transitions. [2019-11-06 22:15:07,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:15:07,330 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2019-11-06 22:15:07,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:07,339 INFO L225 Difference]: With dead ends: 1629 [2019-11-06 22:15:07,339 INFO L226 Difference]: Without dead ends: 1043 [2019-11-06 22:15:07,341 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:07,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2019-11-06 22:15:07,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1013. [2019-11-06 22:15:07,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2019-11-06 22:15:07,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1569 transitions. [2019-11-06 22:15:07,403 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1569 transitions. Word has length 107 [2019-11-06 22:15:07,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:07,404 INFO L462 AbstractCegarLoop]: Abstraction has 1013 states and 1569 transitions. [2019-11-06 22:15:07,405 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:15:07,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1569 transitions. [2019-11-06 22:15:07,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-11-06 22:15:07,407 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:07,407 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:15:07,407 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:07,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:07,407 INFO L82 PathProgramCache]: Analyzing trace with hash 75181962, now seen corresponding path program 1 times [2019-11-06 22:15:07,408 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:07,408 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872715787] [2019-11-06 22:15:07,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:07,805 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 22:15:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:07,831 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872715787] [2019-11-06 22:15:07,831 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:07,831 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:15:07,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992573989] [2019-11-06 22:15:07,832 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:15:07,832 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:07,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:15:07,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:15:07,833 INFO L87 Difference]: Start difference. First operand 1013 states and 1569 transitions. Second operand 5 states. [2019-11-06 22:15:09,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:09,149 INFO L93 Difference]: Finished difference Result 2008 states and 3113 transitions. [2019-11-06 22:15:09,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:15:09,150 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2019-11-06 22:15:09,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:09,157 INFO L225 Difference]: With dead ends: 2008 [2019-11-06 22:15:09,158 INFO L226 Difference]: Without dead ends: 1013 [2019-11-06 22:15:09,161 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:15:09,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2019-11-06 22:15:09,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1012. [2019-11-06 22:15:09,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1012 states. [2019-11-06 22:15:09,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1566 transitions. [2019-11-06 22:15:09,313 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1566 transitions. Word has length 107 [2019-11-06 22:15:09,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:09,314 INFO L462 AbstractCegarLoop]: Abstraction has 1012 states and 1566 transitions. [2019-11-06 22:15:09,314 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:15:09,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1566 transitions. [2019-11-06 22:15:09,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-11-06 22:15:09,317 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:09,317 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:15:09,317 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:09,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:09,318 INFO L82 PathProgramCache]: Analyzing trace with hash -610700672, now seen corresponding path program 1 times [2019-11-06 22:15:09,318 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:09,318 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699056587] [2019-11-06 22:15:09,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:09,737 WARN L191 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 22:15:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:09,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:09,792 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699056587] [2019-11-06 22:15:09,792 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:09,792 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:15:09,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098505859] [2019-11-06 22:15:09,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:15:09,794 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:09,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:15:09,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:09,795 INFO L87 Difference]: Start difference. First operand 1012 states and 1566 transitions. Second operand 4 states. [2019-11-06 22:15:11,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:11,941 INFO L93 Difference]: Finished difference Result 2765 states and 4312 transitions. [2019-11-06 22:15:11,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:15:11,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2019-11-06 22:15:11,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:11,952 INFO L225 Difference]: With dead ends: 2765 [2019-11-06 22:15:11,952 INFO L226 Difference]: Without dead ends: 1949 [2019-11-06 22:15:11,954 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:11,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1949 states. [2019-11-06 22:15:12,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1949 to 1947. [2019-11-06 22:15:12,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1947 states. [2019-11-06 22:15:12,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1947 states to 1947 states and 2988 transitions. [2019-11-06 22:15:12,058 INFO L78 Accepts]: Start accepts. Automaton has 1947 states and 2988 transitions. Word has length 107 [2019-11-06 22:15:12,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:12,059 INFO L462 AbstractCegarLoop]: Abstraction has 1947 states and 2988 transitions. [2019-11-06 22:15:12,059 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:15:12,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1947 states and 2988 transitions. [2019-11-06 22:15:12,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-11-06 22:15:12,061 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:12,061 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:15:12,062 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:12,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:12,062 INFO L82 PathProgramCache]: Analyzing trace with hash 935860675, now seen corresponding path program 1 times [2019-11-06 22:15:12,062 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:12,062 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744523752] [2019-11-06 22:15:12,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:12,371 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 22:15:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:12,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:12,397 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744523752] [2019-11-06 22:15:12,397 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:12,397 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:15:12,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294874750] [2019-11-06 22:15:12,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:15:12,398 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:12,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:15:12,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:15:12,399 INFO L87 Difference]: Start difference. First operand 1947 states and 2988 transitions. Second operand 5 states. [2019-11-06 22:15:13,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:13,485 INFO L93 Difference]: Finished difference Result 3252 states and 5019 transitions. [2019-11-06 22:15:13,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:15:13,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2019-11-06 22:15:13,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:13,493 INFO L225 Difference]: With dead ends: 3252 [2019-11-06 22:15:13,493 INFO L226 Difference]: Without dead ends: 1489 [2019-11-06 22:15:13,497 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:15:13,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2019-11-06 22:15:13,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1489. [2019-11-06 22:15:13,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1489 states. [2019-11-06 22:15:13,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 2274 transitions. [2019-11-06 22:15:13,567 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 2274 transitions. Word has length 107 [2019-11-06 22:15:13,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:13,568 INFO L462 AbstractCegarLoop]: Abstraction has 1489 states and 2274 transitions. [2019-11-06 22:15:13,568 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:15:13,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 2274 transitions. [2019-11-06 22:15:13,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-11-06 22:15:13,570 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:13,570 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:15:13,570 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:13,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:13,571 INFO L82 PathProgramCache]: Analyzing trace with hash -967455086, now seen corresponding path program 1 times [2019-11-06 22:15:13,571 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:13,571 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465580914] [2019-11-06 22:15:13,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:13,896 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 22:15:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:13,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:13,921 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465580914] [2019-11-06 22:15:13,922 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:13,922 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:15:13,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052835598] [2019-11-06 22:15:13,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:15:13,924 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:13,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:15:13,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:13,925 INFO L87 Difference]: Start difference. First operand 1489 states and 2274 transitions. Second operand 4 states. [2019-11-06 22:15:15,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:15,396 INFO L93 Difference]: Finished difference Result 3562 states and 5609 transitions. [2019-11-06 22:15:15,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:15:15,397 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2019-11-06 22:15:15,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:15,408 INFO L225 Difference]: With dead ends: 3562 [2019-11-06 22:15:15,409 INFO L226 Difference]: Without dead ends: 2343 [2019-11-06 22:15:15,412 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:15,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2343 states. [2019-11-06 22:15:15,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2343 to 2257. [2019-11-06 22:15:15,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2257 states. [2019-11-06 22:15:15,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3522 transitions. [2019-11-06 22:15:15,513 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3522 transitions. Word has length 109 [2019-11-06 22:15:15,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:15,514 INFO L462 AbstractCegarLoop]: Abstraction has 2257 states and 3522 transitions. [2019-11-06 22:15:15,514 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:15:15,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3522 transitions. [2019-11-06 22:15:15,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-11-06 22:15:15,516 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:15,516 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:15:15,516 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:15,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:15,517 INFO L82 PathProgramCache]: Analyzing trace with hash 195490705, now seen corresponding path program 1 times [2019-11-06 22:15:15,517 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:15,517 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382196448] [2019-11-06 22:15:15,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:15,843 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 22:15:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:15,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:15,875 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382196448] [2019-11-06 22:15:15,876 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:15,876 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:15:15,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046529236] [2019-11-06 22:15:15,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:15:15,877 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:15,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:15:15,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:15:15,877 INFO L87 Difference]: Start difference. First operand 2257 states and 3522 transitions. Second operand 5 states. [2019-11-06 22:15:17,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:17,841 INFO L93 Difference]: Finished difference Result 5820 states and 9101 transitions. [2019-11-06 22:15:17,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:15:17,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2019-11-06 22:15:17,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:17,861 INFO L225 Difference]: With dead ends: 5820 [2019-11-06 22:15:17,861 INFO L226 Difference]: Without dead ends: 3594 [2019-11-06 22:15:17,866 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:15:17,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2019-11-06 22:15:18,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 3592. [2019-11-06 22:15:18,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3592 states. [2019-11-06 22:15:18,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3592 states to 3592 states and 5576 transitions. [2019-11-06 22:15:18,062 INFO L78 Accepts]: Start accepts. Automaton has 3592 states and 5576 transitions. Word has length 110 [2019-11-06 22:15:18,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:18,063 INFO L462 AbstractCegarLoop]: Abstraction has 3592 states and 5576 transitions. [2019-11-06 22:15:18,063 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:15:18,063 INFO L276 IsEmpty]: Start isEmpty. Operand 3592 states and 5576 transitions. [2019-11-06 22:15:18,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-06 22:15:18,066 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:18,066 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:15:18,066 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:18,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:18,067 INFO L82 PathProgramCache]: Analyzing trace with hash -2099167218, now seen corresponding path program 1 times [2019-11-06 22:15:18,067 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:18,067 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254315135] [2019-11-06 22:15:18,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:18,380 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 22:15:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:18,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:18,409 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254315135] [2019-11-06 22:15:18,409 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:18,409 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:15:18,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940619066] [2019-11-06 22:15:18,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:15:18,410 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:18,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:15:18,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:18,411 INFO L87 Difference]: Start difference. First operand 3592 states and 5576 transitions. Second operand 4 states. [2019-11-06 22:15:19,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:19,919 INFO L93 Difference]: Finished difference Result 8748 states and 13683 transitions. [2019-11-06 22:15:19,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:15:19,920 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2019-11-06 22:15:19,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:19,950 INFO L225 Difference]: With dead ends: 8748 [2019-11-06 22:15:19,951 INFO L226 Difference]: Without dead ends: 5532 [2019-11-06 22:15:19,961 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:19,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5532 states. [2019-11-06 22:15:20,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5532 to 5530. [2019-11-06 22:15:20,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5530 states. [2019-11-06 22:15:20,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5530 states to 5530 states and 8515 transitions. [2019-11-06 22:15:20,265 INFO L78 Accepts]: Start accepts. Automaton has 5530 states and 8515 transitions. Word has length 112 [2019-11-06 22:15:20,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:20,266 INFO L462 AbstractCegarLoop]: Abstraction has 5530 states and 8515 transitions. [2019-11-06 22:15:20,266 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:15:20,266 INFO L276 IsEmpty]: Start isEmpty. Operand 5530 states and 8515 transitions. [2019-11-06 22:15:20,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-11-06 22:15:20,269 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:20,269 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:15:20,269 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:20,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:20,270 INFO L82 PathProgramCache]: Analyzing trace with hash -122679506, now seen corresponding path program 1 times [2019-11-06 22:15:20,270 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:20,270 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954882861] [2019-11-06 22:15:20,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:20,540 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 22:15:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:20,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:20,563 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954882861] [2019-11-06 22:15:20,564 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:20,564 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:15:20,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521326175] [2019-11-06 22:15:20,565 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:15:20,565 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:20,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:15:20,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:20,565 INFO L87 Difference]: Start difference. First operand 5530 states and 8515 transitions. Second operand 4 states. [2019-11-06 22:15:22,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:22,008 INFO L93 Difference]: Finished difference Result 14570 states and 22850 transitions. [2019-11-06 22:15:22,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:15:22,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2019-11-06 22:15:22,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:22,049 INFO L225 Difference]: With dead ends: 14570 [2019-11-06 22:15:22,049 INFO L226 Difference]: Without dead ends: 9376 [2019-11-06 22:15:22,060 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:22,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9376 states. [2019-11-06 22:15:22,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9376 to 8966. [2019-11-06 22:15:22,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8966 states. [2019-11-06 22:15:22,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8966 states to 8966 states and 14034 transitions. [2019-11-06 22:15:22,540 INFO L78 Accepts]: Start accepts. Automaton has 8966 states and 14034 transitions. Word has length 114 [2019-11-06 22:15:22,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:22,540 INFO L462 AbstractCegarLoop]: Abstraction has 8966 states and 14034 transitions. [2019-11-06 22:15:22,540 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:15:22,541 INFO L276 IsEmpty]: Start isEmpty. Operand 8966 states and 14034 transitions. [2019-11-06 22:15:22,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-11-06 22:15:22,543 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:22,544 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:15:22,544 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:22,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:22,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1346619386, now seen corresponding path program 1 times [2019-11-06 22:15:22,544 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:22,545 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509041051] [2019-11-06 22:15:22,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:22,847 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 22:15:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:22,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:22,869 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509041051] [2019-11-06 22:15:22,869 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:22,869 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:15:22,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793274202] [2019-11-06 22:15:22,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:15:22,874 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:22,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:15:22,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:22,875 INFO L87 Difference]: Start difference. First operand 8966 states and 14034 transitions. Second operand 4 states. [2019-11-06 22:15:23,104 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-11-06 22:15:24,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:24,565 INFO L93 Difference]: Finished difference Result 25623 states and 40462 transitions. [2019-11-06 22:15:24,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:15:24,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2019-11-06 22:15:24,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:24,604 INFO L225 Difference]: With dead ends: 25623 [2019-11-06 22:15:24,604 INFO L226 Difference]: Without dead ends: 17325 [2019-11-06 22:15:24,620 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:15:24,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17325 states. [2019-11-06 22:15:25,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17325 to 17323. [2019-11-06 22:15:25,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17323 states. [2019-11-06 22:15:25,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17323 states to 17323 states and 27148 transitions. [2019-11-06 22:15:25,372 INFO L78 Accepts]: Start accepts. Automaton has 17323 states and 27148 transitions. Word has length 115 [2019-11-06 22:15:25,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:25,372 INFO L462 AbstractCegarLoop]: Abstraction has 17323 states and 27148 transitions. [2019-11-06 22:15:25,372 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:15:25,372 INFO L276 IsEmpty]: Start isEmpty. Operand 17323 states and 27148 transitions. [2019-11-06 22:15:25,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-11-06 22:15:25,376 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:25,377 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:15:25,377 INFO L410 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:25,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:25,377 INFO L82 PathProgramCache]: Analyzing trace with hash 636430229, now seen corresponding path program 1 times [2019-11-06 22:15:25,378 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:25,378 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619937691] [2019-11-06 22:15:25,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:25,710 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 22:15:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:25,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:25,742 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619937691] [2019-11-06 22:15:25,742 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:25,742 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:15:25,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864517549] [2019-11-06 22:15:25,743 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:15:25,743 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:25,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:15:25,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:15:25,744 INFO L87 Difference]: Start difference. First operand 17323 states and 27148 transitions. Second operand 5 states. [2019-11-06 22:15:28,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:28,514 INFO L93 Difference]: Finished difference Result 48390 states and 75721 transitions. [2019-11-06 22:15:28,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:15:28,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2019-11-06 22:15:28,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:28,577 INFO L225 Difference]: With dead ends: 48390 [2019-11-06 22:15:28,577 INFO L226 Difference]: Without dead ends: 31110 [2019-11-06 22:15:28,609 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:15:28,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31110 states.