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/loop-lit/gj2007.c.i.p+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:15:36,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:15:36,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:15:36,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:15:36,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:15:36,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:15:36,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:15:36,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:15:36,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:15:36,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:15:36,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:15:36,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:15:36,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:15:36,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:15:36,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:15:36,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:15:36,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:15:36,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:15:36,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:15:36,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:15:36,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:15:36,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:15:36,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:15:36,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:15:36,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:15:36,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:15:36,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:15:36,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:15:36,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:15:36,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:15:36,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:15:36,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:15:36,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:15:36,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:15:36,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:15:36,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:15:36,575 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 [2019-10-14 23:15:36,595 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:15:36,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:15:36,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:15:36,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:15:36,597 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:15:36,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:15:36,598 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:15:36,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:15:36,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:15:36,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:15:36,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:15:36,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:15:36,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:15:36,600 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:15:36,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:15:36,600 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:15:36,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:15:36,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:15:36,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:15:36,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:15:36,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:15:36,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:15:36,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:15:36,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:15:36,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:15:36,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:15:36,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:15:36,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:15:36,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:15:36,897 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:15:36,909 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:15:36,912 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:15:36,913 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:15:36,914 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:15:36,914 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c [2019-10-14 23:15:36,983 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8efc25814/11340632811748c8a1666c41cf61f54c/FLAG8dc8f02eb [2019-10-14 23:15:37,425 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:15:37,426 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c [2019-10-14 23:15:37,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8efc25814/11340632811748c8a1666c41cf61f54c/FLAG8dc8f02eb [2019-10-14 23:15:37,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8efc25814/11340632811748c8a1666c41cf61f54c [2019-10-14 23:15:37,953 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:15:37,958 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:15:37,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:15:37,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:15:37,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:15:37,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:15:37" (1/1) ... [2019-10-14 23:15:37,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3ce9ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:37, skipping insertion in model container [2019-10-14 23:15:37,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:15:37" (1/1) ... [2019-10-14 23:15:37,974 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:15:38,020 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:15:38,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:15:38,369 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:15:38,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:15:38,556 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:15:38,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:38 WrapperNode [2019-10-14 23:15:38,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:15:38,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:15:38,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:15:38,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:15:38,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:38" (1/1) ... [2019-10-14 23:15:38,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:38" (1/1) ... [2019-10-14 23:15:38,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:38" (1/1) ... [2019-10-14 23:15:38,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:38" (1/1) ... [2019-10-14 23:15:38,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:38" (1/1) ... [2019-10-14 23:15:38,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:38" (1/1) ... [2019-10-14 23:15:38,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:38" (1/1) ... [2019-10-14 23:15:38,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:15:38,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:15:38,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:15:38,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:15:38,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:38" (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 [2019-10-14 23:15:38,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:15:38,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:15:38,680 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:15:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:15:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:15:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:15:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:15:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:15:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:15:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:15:39,551 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:15:39,552 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:15:39,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:15:39 BoogieIcfgContainer [2019-10-14 23:15:39,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:15:39,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:15:39,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:15:39,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:15:39,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:15:37" (1/3) ... [2019-10-14 23:15:39,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15cc7cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:15:39, skipping insertion in model container [2019-10-14 23:15:39,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:38" (2/3) ... [2019-10-14 23:15:39,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15cc7cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:15:39, skipping insertion in model container [2019-10-14 23:15:39,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:15:39" (3/3) ... [2019-10-14 23:15:39,561 INFO L109 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+nlh-reducer.c [2019-10-14 23:15:39,570 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:15:39,576 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:15:39,588 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:15:39,614 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:15:39,614 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:15:39,614 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:15:39,615 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:15:39,616 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:15:39,616 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:15:39,616 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:15:39,617 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:15:39,644 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2019-10-14 23:15:39,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-14 23:15:39,657 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:39,658 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:39,659 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:39,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:39,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1537709744, now seen corresponding path program 1 times [2019-10-14 23:15:39,671 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:39,671 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700360986] [2019-10-14 23:15:39,672 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:39,672 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:39,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:39,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:39,911 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700360986] [2019-10-14 23:15:39,912 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:15:39,912 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:15:39,912 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062632747] [2019-10-14 23:15:39,917 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:15:39,917 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:39,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:15:39,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:15:39,934 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 4 states. [2019-10-14 23:15:40,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:15:40,560 INFO L93 Difference]: Finished difference Result 292 states and 562 transitions. [2019-10-14 23:15:40,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:15:40,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2019-10-14 23:15:40,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:15:40,581 INFO L225 Difference]: With dead ends: 292 [2019-10-14 23:15:40,582 INFO L226 Difference]: Without dead ends: 145 [2019-10-14 23:15:40,589 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:15:40,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2019-10-14 23:15:40,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2019-10-14 23:15:40,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2019-10-14 23:15:40,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 212 transitions. [2019-10-14 23:15:40,680 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 212 transitions. Word has length 143 [2019-10-14 23:15:40,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:15:40,681 INFO L462 AbstractCegarLoop]: Abstraction has 145 states and 212 transitions. [2019-10-14 23:15:40,681 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:15:40,682 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 212 transitions. [2019-10-14 23:15:40,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-14 23:15:40,696 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:40,698 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:40,699 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:40,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:40,701 INFO L82 PathProgramCache]: Analyzing trace with hash 470480343, now seen corresponding path program 1 times [2019-10-14 23:15:40,701 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:40,701 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136461683] [2019-10-14 23:15:40,701 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:40,702 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:40,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:40,901 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136461683] [2019-10-14 23:15:40,902 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:15:40,902 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:15:40,902 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82132451] [2019-10-14 23:15:40,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:15:40,906 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:40,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:15:40,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:15:40,907 INFO L87 Difference]: Start difference. First operand 145 states and 212 transitions. Second operand 4 states. [2019-10-14 23:15:41,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:15:41,519 INFO L93 Difference]: Finished difference Result 410 states and 609 transitions. [2019-10-14 23:15:41,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:15:41,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2019-10-14 23:15:41,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:15:41,524 INFO L225 Difference]: With dead ends: 410 [2019-10-14 23:15:41,524 INFO L226 Difference]: Without dead ends: 277 [2019-10-14 23:15:41,526 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:15:41,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2019-10-14 23:15:41,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2019-10-14 23:15:41,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2019-10-14 23:15:41,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 345 transitions. [2019-10-14 23:15:41,553 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 345 transitions. Word has length 143 [2019-10-14 23:15:41,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:15:41,554 INFO L462 AbstractCegarLoop]: Abstraction has 277 states and 345 transitions. [2019-10-14 23:15:41,554 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:15:41,554 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 345 transitions. [2019-10-14 23:15:41,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-14 23:15:41,556 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:41,557 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:41,557 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:41,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:41,557 INFO L82 PathProgramCache]: Analyzing trace with hash 859387544, now seen corresponding path program 1 times [2019-10-14 23:15:41,558 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:41,558 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863577161] [2019-10-14 23:15:41,558 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:41,558 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:41,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:43,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:43,900 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863577161] [2019-10-14 23:15:43,901 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:15:43,901 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2019-10-14 23:15:43,901 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585785230] [2019-10-14 23:15:43,902 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2019-10-14 23:15:43,902 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:43,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2019-10-14 23:15:43,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2038, Invalid=2792, Unknown=0, NotChecked=0, Total=4830 [2019-10-14 23:15:43,905 INFO L87 Difference]: Start difference. First operand 277 states and 345 transitions. Second operand 70 states. [2019-10-14 23:15:44,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:15:44,798 INFO L93 Difference]: Finished difference Result 404 states and 472 transitions. [2019-10-14 23:15:44,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:15:44,799 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 143 [2019-10-14 23:15:44,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:15:44,802 INFO L225 Difference]: With dead ends: 404 [2019-10-14 23:15:44,802 INFO L226 Difference]: Without dead ends: 269 [2019-10-14 23:15:44,809 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2085, Invalid=3615, Unknown=0, NotChecked=0, Total=5700 [2019-10-14 23:15:44,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2019-10-14 23:15:44,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2019-10-14 23:15:44,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2019-10-14 23:15:44,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 333 transitions. [2019-10-14 23:15:44,853 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 333 transitions. Word has length 143 [2019-10-14 23:15:44,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:15:44,853 INFO L462 AbstractCegarLoop]: Abstraction has 269 states and 333 transitions. [2019-10-14 23:15:44,853 INFO L463 AbstractCegarLoop]: Interpolant automaton has 70 states. [2019-10-14 23:15:44,853 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 333 transitions. [2019-10-14 23:15:44,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-14 23:15:44,856 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:44,856 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:44,857 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:44,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:44,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1284631305, now seen corresponding path program 1 times [2019-10-14 23:15:44,857 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:44,858 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565644870] [2019-10-14 23:15:44,858 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:44,858 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:44,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:47,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:47,370 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565644870] [2019-10-14 23:15:47,370 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:15:47,370 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2019-10-14 23:15:47,370 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136528963] [2019-10-14 23:15:47,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2019-10-14 23:15:47,371 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:47,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2019-10-14 23:15:47,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1982, Invalid=2848, Unknown=0, NotChecked=0, Total=4830 [2019-10-14 23:15:47,374 INFO L87 Difference]: Start difference. First operand 269 states and 333 transitions. Second operand 70 states. [2019-10-14 23:15:48,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:15:48,430 INFO L93 Difference]: Finished difference Result 394 states and 458 transitions. [2019-10-14 23:15:48,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:15:48,432 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 143 [2019-10-14 23:15:48,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:15:48,434 INFO L225 Difference]: With dead ends: 394 [2019-10-14 23:15:48,434 INFO L226 Difference]: Without dead ends: 267 [2019-10-14 23:15:48,437 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2044, Invalid=3808, Unknown=0, NotChecked=0, Total=5852 [2019-10-14 23:15:48,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2019-10-14 23:15:48,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2019-10-14 23:15:48,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2019-10-14 23:15:48,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 330 transitions. [2019-10-14 23:15:48,460 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 330 transitions. Word has length 143 [2019-10-14 23:15:48,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:15:48,460 INFO L462 AbstractCegarLoop]: Abstraction has 267 states and 330 transitions. [2019-10-14 23:15:48,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 70 states. [2019-10-14 23:15:48,461 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 330 transitions. [2019-10-14 23:15:48,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-14 23:15:48,462 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:48,463 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:48,463 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:48,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:48,463 INFO L82 PathProgramCache]: Analyzing trace with hash 698919756, now seen corresponding path program 1 times [2019-10-14 23:15:48,464 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:48,464 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324992781] [2019-10-14 23:15:48,465 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:48,465 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:48,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:50,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:50,258 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324992781] [2019-10-14 23:15:50,258 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:15:50,258 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2019-10-14 23:15:50,259 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249288180] [2019-10-14 23:15:50,259 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2019-10-14 23:15:50,259 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:50,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2019-10-14 23:15:50,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1928, Invalid=2902, Unknown=0, NotChecked=0, Total=4830 [2019-10-14 23:15:50,262 INFO L87 Difference]: Start difference. First operand 267 states and 330 transitions. Second operand 70 states. [2019-10-14 23:15:51,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:15:51,345 INFO L93 Difference]: Finished difference Result 390 states and 453 transitions. [2019-10-14 23:15:51,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:15:51,346 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 143 [2019-10-14 23:15:51,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:15:51,348 INFO L225 Difference]: With dead ends: 390 [2019-10-14 23:15:51,349 INFO L226 Difference]: Without dead ends: 265 [2019-10-14 23:15:51,351 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2007, Invalid=3999, Unknown=0, NotChecked=0, Total=6006 [2019-10-14 23:15:51,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2019-10-14 23:15:51,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2019-10-14 23:15:51,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2019-10-14 23:15:51,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 327 transitions. [2019-10-14 23:15:51,364 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 327 transitions. Word has length 143 [2019-10-14 23:15:51,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:15:51,364 INFO L462 AbstractCegarLoop]: Abstraction has 265 states and 327 transitions. [2019-10-14 23:15:51,365 INFO L463 AbstractCegarLoop]: Interpolant automaton has 70 states. [2019-10-14 23:15:51,365 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 327 transitions. [2019-10-14 23:15:51,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-14 23:15:51,366 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:51,367 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:51,367 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:51,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:51,367 INFO L82 PathProgramCache]: Analyzing trace with hash 2054450191, now seen corresponding path program 1 times [2019-10-14 23:15:51,368 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:51,368 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795590641] [2019-10-14 23:15:51,368 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:51,368 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:51,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:53,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:53,036 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795590641] [2019-10-14 23:15:53,036 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:15:53,036 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2019-10-14 23:15:53,037 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318640082] [2019-10-14 23:15:53,038 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2019-10-14 23:15:53,038 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:53,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2019-10-14 23:15:53,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1778, Invalid=3052, Unknown=0, NotChecked=0, Total=4830 [2019-10-14 23:15:53,040 INFO L87 Difference]: Start difference. First operand 265 states and 327 transitions. Second operand 70 states. [2019-10-14 23:15:54,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:15:54,635 INFO L93 Difference]: Finished difference Result 382 states and 444 transitions. [2019-10-14 23:15:54,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-14 23:15:54,636 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 143 [2019-10-14 23:15:54,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:15:54,638 INFO L225 Difference]: With dead ends: 382 [2019-10-14 23:15:54,639 INFO L226 Difference]: Without dead ends: 259 [2019-10-14 23:15:54,642 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1240 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1920, Invalid=4560, Unknown=0, NotChecked=0, Total=6480 [2019-10-14 23:15:54,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2019-10-14 23:15:54,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2019-10-14 23:15:54,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2019-10-14 23:15:54,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 318 transitions. [2019-10-14 23:15:54,654 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 318 transitions. Word has length 143 [2019-10-14 23:15:54,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:15:54,654 INFO L462 AbstractCegarLoop]: Abstraction has 259 states and 318 transitions. [2019-10-14 23:15:54,655 INFO L463 AbstractCegarLoop]: Interpolant automaton has 70 states. [2019-10-14 23:15:54,655 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 318 transitions. [2019-10-14 23:15:54,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-14 23:15:54,656 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:54,657 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:54,657 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:54,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:54,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1013609311, now seen corresponding path program 1 times [2019-10-14 23:15:54,658 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:54,658 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090884983] [2019-10-14 23:15:54,658 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:54,658 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:54,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:56,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:56,239 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090884983] [2019-10-14 23:15:56,239 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:15:56,239 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2019-10-14 23:15:56,239 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121620796] [2019-10-14 23:15:56,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2019-10-14 23:15:56,240 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:56,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2019-10-14 23:15:56,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1688, Invalid=3142, Unknown=0, NotChecked=0, Total=4830 [2019-10-14 23:15:56,242 INFO L87 Difference]: Start difference. First operand 259 states and 318 transitions. Second operand 70 states. [2019-10-14 23:15:58,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:15:58,008 INFO L93 Difference]: Finished difference Result 372 states and 431 transitions. [2019-10-14 23:15:58,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 23:15:58,009 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 143 [2019-10-14 23:15:58,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:15:58,011 INFO L225 Difference]: With dead ends: 372 [2019-10-14 23:15:58,011 INFO L226 Difference]: Without dead ends: 255 [2019-10-14 23:15:58,013 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1439 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1882, Invalid=4924, Unknown=0, NotChecked=0, Total=6806 [2019-10-14 23:15:58,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2019-10-14 23:15:58,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2019-10-14 23:15:58,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2019-10-14 23:15:58,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 312 transitions. [2019-10-14 23:15:58,023 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 312 transitions. Word has length 143 [2019-10-14 23:15:58,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:15:58,024 INFO L462 AbstractCegarLoop]: Abstraction has 255 states and 312 transitions. [2019-10-14 23:15:58,024 INFO L463 AbstractCegarLoop]: Interpolant automaton has 70 states. [2019-10-14 23:15:58,024 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 312 transitions. [2019-10-14 23:15:58,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-14 23:15:58,026 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:58,026 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:58,026 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:58,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:58,027 INFO L82 PathProgramCache]: Analyzing trace with hash 560132216, now seen corresponding path program 1 times [2019-10-14 23:15:58,027 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:58,027 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89196078] [2019-10-14 23:15:58,027 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:58,027 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:58,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:59,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:59,589 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89196078] [2019-10-14 23:15:59,589 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:15:59,589 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2019-10-14 23:15:59,590 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969004983] [2019-10-14 23:15:59,590 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2019-10-14 23:15:59,590 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:59,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2019-10-14 23:15:59,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1646, Invalid=3184, Unknown=0, NotChecked=0, Total=4830 [2019-10-14 23:15:59,592 INFO L87 Difference]: Start difference. First operand 255 states and 312 transitions. Second operand 70 states. [2019-10-14 23:16:01,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:01,110 INFO L93 Difference]: Finished difference Result 366 states and 423 transitions. [2019-10-14 23:16:01,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-14 23:16:01,110 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 143 [2019-10-14 23:16:01,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:01,112 INFO L225 Difference]: With dead ends: 366 [2019-10-14 23:16:01,113 INFO L226 Difference]: Without dead ends: 253 [2019-10-14 23:16:01,115 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1534 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1869, Invalid=5103, Unknown=0, NotChecked=0, Total=6972 [2019-10-14 23:16:01,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2019-10-14 23:16:01,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2019-10-14 23:16:01,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2019-10-14 23:16:01,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 309 transitions. [2019-10-14 23:16:01,125 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 309 transitions. Word has length 143 [2019-10-14 23:16:01,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:01,125 INFO L462 AbstractCegarLoop]: Abstraction has 253 states and 309 transitions. [2019-10-14 23:16:01,126 INFO L463 AbstractCegarLoop]: Interpolant automaton has 70 states. [2019-10-14 23:16:01,126 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 309 transitions. [2019-10-14 23:16:01,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-14 23:16:01,127 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:01,128 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:01,128 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:01,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:01,128 INFO L82 PathProgramCache]: Analyzing trace with hash 752755852, now seen corresponding path program 1 times [2019-10-14 23:16:01,129 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:01,129 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491355205] [2019-10-14 23:16:01,129 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:01,129 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:01,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:02,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:02,653 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491355205] [2019-10-14 23:16:02,653 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:16:02,653 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2019-10-14 23:16:02,653 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947013280] [2019-10-14 23:16:02,654 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2019-10-14 23:16:02,654 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:02,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2019-10-14 23:16:02,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1568, Invalid=3262, Unknown=0, NotChecked=0, Total=4830 [2019-10-14 23:16:02,656 INFO L87 Difference]: Start difference. First operand 253 states and 309 transitions. Second operand 70 states. [2019-10-14 23:16:04,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:04,484 INFO L93 Difference]: Finished difference Result 360 states and 416 transitions. [2019-10-14 23:16:04,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-14 23:16:04,484 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 143 [2019-10-14 23:16:04,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:04,487 INFO L225 Difference]: With dead ends: 360 [2019-10-14 23:16:04,487 INFO L226 Difference]: Without dead ends: 249 [2019-10-14 23:16:04,489 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1715 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1855, Invalid=5455, Unknown=0, NotChecked=0, Total=7310 [2019-10-14 23:16:04,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2019-10-14 23:16:04,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2019-10-14 23:16:04,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2019-10-14 23:16:04,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 303 transitions. [2019-10-14 23:16:04,498 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 303 transitions. Word has length 143 [2019-10-14 23:16:04,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:04,499 INFO L462 AbstractCegarLoop]: Abstraction has 249 states and 303 transitions. [2019-10-14 23:16:04,499 INFO L463 AbstractCegarLoop]: Interpolant automaton has 70 states. [2019-10-14 23:16:04,499 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 303 transitions. [2019-10-14 23:16:04,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-14 23:16:04,501 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:04,501 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:04,502 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:04,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:04,502 INFO L82 PathProgramCache]: Analyzing trace with hash -553376648, now seen corresponding path program 1 times [2019-10-14 23:16:04,502 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:04,502 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534854203] [2019-10-14 23:16:04,503 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:04,503 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:04,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:06,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:06,525 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534854203] [2019-10-14 23:16:06,525 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:16:06,526 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2019-10-14 23:16:06,526 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721881892] [2019-10-14 23:16:06,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2019-10-14 23:16:06,527 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:06,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2019-10-14 23:16:06,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1498, Invalid=3332, Unknown=0, NotChecked=0, Total=4830 [2019-10-14 23:16:06,528 INFO L87 Difference]: Start difference. First operand 249 states and 303 transitions. Second operand 70 states. [2019-10-14 23:16:07,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:07,709 INFO L93 Difference]: Finished difference Result 352 states and 406 transitions. [2019-10-14 23:16:07,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-14 23:16:07,709 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 143 [2019-10-14 23:16:07,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:07,710 INFO L225 Difference]: With dead ends: 352 [2019-10-14 23:16:07,711 INFO L226 Difference]: Without dead ends: 245 [2019-10-14 23:16:07,712 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1884 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1857, Invalid=5799, Unknown=0, NotChecked=0, Total=7656 [2019-10-14 23:16:07,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2019-10-14 23:16:07,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2019-10-14 23:16:07,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2019-10-14 23:16:07,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 297 transitions. [2019-10-14 23:16:07,723 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 297 transitions. Word has length 143 [2019-10-14 23:16:07,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:07,723 INFO L462 AbstractCegarLoop]: Abstraction has 245 states and 297 transitions. [2019-10-14 23:16:07,724 INFO L463 AbstractCegarLoop]: Interpolant automaton has 70 states. [2019-10-14 23:16:07,724 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 297 transitions. [2019-10-14 23:16:07,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-14 23:16:07,726 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:07,727 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:07,727 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:07,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:07,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1465640920, now seen corresponding path program 1 times [2019-10-14 23:16:07,728 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:07,728 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704457010] [2019-10-14 23:16:07,729 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:07,729 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:07,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:09,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:09,501 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704457010] [2019-10-14 23:16:09,501 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:16:09,501 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2019-10-14 23:16:09,502 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676178250] [2019-10-14 23:16:09,502 INFO L442 AbstractCegarLoop]: Interpolant automaton has 71 states [2019-10-14 23:16:09,502 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:09,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2019-10-14 23:16:09,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2019-10-14 23:16:09,503 INFO L87 Difference]: Start difference. First operand 245 states and 297 transitions. Second operand 71 states. [2019-10-14 23:16:15,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:15,796 INFO L93 Difference]: Finished difference Result 556 states and 625 transitions. [2019-10-14 23:16:15,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2019-10-14 23:16:15,797 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 143 [2019-10-14 23:16:15,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:15,800 INFO L225 Difference]: With dead ends: 556 [2019-10-14 23:16:15,800 INFO L226 Difference]: Without dead ends: 453 [2019-10-14 23:16:15,802 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2019-10-14 23:16:15,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2019-10-14 23:16:15,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 452. [2019-10-14 23:16:15,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2019-10-14 23:16:15,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 470 transitions. [2019-10-14 23:16:15,817 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 470 transitions. Word has length 143 [2019-10-14 23:16:15,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:15,818 INFO L462 AbstractCegarLoop]: Abstraction has 452 states and 470 transitions. [2019-10-14 23:16:15,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 71 states. [2019-10-14 23:16:15,818 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 470 transitions. [2019-10-14 23:16:15,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-14 23:16:15,820 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:15,820 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:15,821 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:15,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:15,821 INFO L82 PathProgramCache]: Analyzing trace with hash -87860138, now seen corresponding path program 1 times [2019-10-14 23:16:15,821 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:15,822 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675267136] [2019-10-14 23:16:15,822 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:15,822 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:15,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:17,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:17,613 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675267136] [2019-10-14 23:16:17,614 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273925248] [2019-10-14 23:16:17,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:17,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 70 conjunts are in the unsatisfiable core [2019-10-14 23:16:17,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:16:17,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:17,847 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:16:17,847 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71] total 72 [2019-10-14 23:16:17,848 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846331720] [2019-10-14 23:16:17,848 INFO L442 AbstractCegarLoop]: Interpolant automaton has 72 states [2019-10-14 23:16:17,849 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:17,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2019-10-14 23:16:17,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2019-10-14 23:16:17,850 INFO L87 Difference]: Start difference. First operand 452 states and 470 transitions. Second operand 72 states.