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-f4eb214f-m [2019-10-13 19:16:36,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:16:36,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:16:36,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:16:36,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:16:36,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:16:36,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:16:36,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:16:36,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:16:36,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:16:36,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:16:36,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:16:36,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:16:36,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:16:36,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:16:36,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:16:36,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:16:36,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:16:36,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:16:36,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:16:36,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:16:36,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:16:36,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:16:36,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:16:36,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:16:36,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:16:36,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:16:36,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:16:36,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:16:36,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:16:36,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:16:36,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:16:36,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:16:36,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:16:36,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:16:36,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:16:36,347 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:16:36,361 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:16:36,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:16:36,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:16:36,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:16:36,363 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:16:36,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:16:36,363 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:16:36,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:16:36,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:16:36,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:16:36,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:16:36,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:16:36,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:16:36,365 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:16:36,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:16:36,365 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:16:36,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:16:36,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:16:36,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:16:36,366 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:16:36,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:16:36,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:16:36,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:16:36,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:16:36,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:16:36,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:16:36,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:16:36,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:16:36,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:16:36,638 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:16:36,660 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:16:36,664 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:16:36,666 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:16:36,666 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:16:36,667 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c [2019-10-13 19:16:36,734 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd9aeb81/1e7a6e276ae6406e874184b0b1ef07a3/FLAGf07767477 [2019-10-13 19:16:37,240 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:16:37,241 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c [2019-10-13 19:16:37,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd9aeb81/1e7a6e276ae6406e874184b0b1ef07a3/FLAGf07767477 [2019-10-13 19:16:37,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd9aeb81/1e7a6e276ae6406e874184b0b1ef07a3 [2019-10-13 19:16:37,620 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:16:37,621 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:16:37,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:16:37,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:16:37,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:16:37,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:16:37" (1/1) ... [2019-10-13 19:16:37,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a4be3b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:37, skipping insertion in model container [2019-10-13 19:16:37,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:16:37" (1/1) ... [2019-10-13 19:16:37,638 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:16:37,690 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:16:38,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:16:38,045 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:16:38,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:16:38,244 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:16:38,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:38 WrapperNode [2019-10-13 19:16:38,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:16:38,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:16:38,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:16:38,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:16:38,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:38" (1/1) ... [2019-10-13 19:16:38,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:38" (1/1) ... [2019-10-13 19:16:38,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:38" (1/1) ... [2019-10-13 19:16:38,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:38" (1/1) ... [2019-10-13 19:16:38,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:38" (1/1) ... [2019-10-13 19:16:38,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:38" (1/1) ... [2019-10-13 19:16:38,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:38" (1/1) ... [2019-10-13 19:16:38,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:16:38,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:16:38,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:16:38,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:16:38,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:38" (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 [2019-10-13 19:16:38,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:16:38,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:16:38,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:16:38,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:16:38,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:16:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:16:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:16:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:16:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:16:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:16:39,275 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:16:39,275 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:16:39,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:16:39 BoogieIcfgContainer [2019-10-13 19:16:39,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:16:39,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:16:39,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:16:39,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:16:39,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:16:37" (1/3) ... [2019-10-13 19:16:39,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2445d31a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:16:39, skipping insertion in model container [2019-10-13 19:16:39,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:38" (2/3) ... [2019-10-13 19:16:39,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2445d31a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:16:39, skipping insertion in model container [2019-10-13 19:16:39,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:16:39" (3/3) ... [2019-10-13 19:16:39,285 INFO L109 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+nlh-reducer.c [2019-10-13 19:16:39,295 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:16:39,304 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:16:39,315 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:16:39,360 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:16:39,360 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:16:39,360 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:16:39,360 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:16:39,361 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:16:39,361 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:16:39,361 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:16:39,361 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:16:39,386 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2019-10-13 19:16:39,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-13 19:16:39,403 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:16:39,404 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] [2019-10-13 19:16:39,406 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:16:39,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:16:39,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1537709744, now seen corresponding path program 1 times [2019-10-13 19:16:39,418 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:16:39,419 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814225962] [2019-10-13 19:16:39,419 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:16:39,420 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:16:39,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:16:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:16:39,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:16:39,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:16:39,692 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814225962] [2019-10-13 19:16:39,693 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:16:39,694 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:16:39,694 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77480792] [2019-10-13 19:16:39,699 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:16:39,700 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:16:39,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:16:39,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:16:39,717 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 4 states. [2019-10-13 19:16:40,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:16:40,394 INFO L93 Difference]: Finished difference Result 292 states and 562 transitions. [2019-10-13 19:16:40,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:16:40,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2019-10-13 19:16:40,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:16:40,410 INFO L225 Difference]: With dead ends: 292 [2019-10-13 19:16:40,410 INFO L226 Difference]: Without dead ends: 145 [2019-10-13 19:16:40,416 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 [2019-10-13 19:16:40,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2019-10-13 19:16:40,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2019-10-13 19:16:40,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2019-10-13 19:16:40,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 212 transitions. [2019-10-13 19:16:40,508 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 212 transitions. Word has length 143 [2019-10-13 19:16:40,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:16:40,509 INFO L462 AbstractCegarLoop]: Abstraction has 145 states and 212 transitions. [2019-10-13 19:16:40,509 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:16:40,511 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 212 transitions. [2019-10-13 19:16:40,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-13 19:16:40,522 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:16:40,523 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] [2019-10-13 19:16:40,523 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:16:40,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:16:40,525 INFO L82 PathProgramCache]: Analyzing trace with hash 470480343, now seen corresponding path program 1 times [2019-10-13 19:16:40,525 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:16:40,526 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705297715] [2019-10-13 19:16:40,526 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:16:40,526 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:16:40,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:16:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:16:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:16:40,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:16:40,718 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705297715] [2019-10-13 19:16:40,718 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:16:40,719 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:16:40,719 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317213829] [2019-10-13 19:16:40,724 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:16:40,725 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:16:40,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:16:40,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:16:40,726 INFO L87 Difference]: Start difference. First operand 145 states and 212 transitions. Second operand 4 states. [2019-10-13 19:16:41,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:16:41,433 INFO L93 Difference]: Finished difference Result 410 states and 609 transitions. [2019-10-13 19:16:41,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:16:41,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2019-10-13 19:16:41,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:16:41,438 INFO L225 Difference]: With dead ends: 410 [2019-10-13 19:16:41,438 INFO L226 Difference]: Without dead ends: 277 [2019-10-13 19:16:41,440 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 [2019-10-13 19:16:41,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2019-10-13 19:16:41,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2019-10-13 19:16:41,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2019-10-13 19:16:41,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 345 transitions. [2019-10-13 19:16:41,469 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 345 transitions. Word has length 143 [2019-10-13 19:16:41,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:16:41,470 INFO L462 AbstractCegarLoop]: Abstraction has 277 states and 345 transitions. [2019-10-13 19:16:41,470 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:16:41,470 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 345 transitions. [2019-10-13 19:16:41,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-13 19:16:41,473 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:16:41,473 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] [2019-10-13 19:16:41,473 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:16:41,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:16:41,474 INFO L82 PathProgramCache]: Analyzing trace with hash 859387544, now seen corresponding path program 1 times [2019-10-13 19:16:41,474 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:16:41,474 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389637228] [2019-10-13 19:16:41,474 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:16:41,475 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:16:41,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:16:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:16:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:16:43,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:16:43,951 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389637228] [2019-10-13 19:16:43,951 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:16:43,951 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2019-10-13 19:16:43,951 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590844788] [2019-10-13 19:16:43,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2019-10-13 19:16:43,952 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:16:43,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2019-10-13 19:16:43,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2038, Invalid=2792, Unknown=0, NotChecked=0, Total=4830 [2019-10-13 19:16:43,956 INFO L87 Difference]: Start difference. First operand 277 states and 345 transitions. Second operand 70 states. [2019-10-13 19:16:44,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:16:44,891 INFO L93 Difference]: Finished difference Result 404 states and 472 transitions. [2019-10-13 19:16:44,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:16:44,893 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 143 [2019-10-13 19:16:44,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:16:44,895 INFO L225 Difference]: With dead ends: 404 [2019-10-13 19:16:44,896 INFO L226 Difference]: Without dead ends: 269 [2019-10-13 19:16:44,899 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 [2019-10-13 19:16:44,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2019-10-13 19:16:44,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2019-10-13 19:16:44,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2019-10-13 19:16:44,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 333 transitions. [2019-10-13 19:16:44,921 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 333 transitions. Word has length 143 [2019-10-13 19:16:44,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:16:44,922 INFO L462 AbstractCegarLoop]: Abstraction has 269 states and 333 transitions. [2019-10-13 19:16:44,922 INFO L463 AbstractCegarLoop]: Interpolant automaton has 70 states. [2019-10-13 19:16:44,922 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 333 transitions. [2019-10-13 19:16:44,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-13 19:16:44,924 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:16:44,924 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] [2019-10-13 19:16:44,925 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:16:44,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:16:44,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1284631305, now seen corresponding path program 1 times [2019-10-13 19:16:44,925 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:16:44,926 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180880360] [2019-10-13 19:16:44,926 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:16:44,926 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:16:44,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:16:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:16:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:16:47,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:16:47,461 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180880360] [2019-10-13 19:16:47,461 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:16:47,461 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2019-10-13 19:16:47,461 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034431098] [2019-10-13 19:16:47,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2019-10-13 19:16:47,463 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:16:47,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2019-10-13 19:16:47,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1982, Invalid=2848, Unknown=0, NotChecked=0, Total=4830 [2019-10-13 19:16:47,467 INFO L87 Difference]: Start difference. First operand 269 states and 333 transitions. Second operand 70 states. [2019-10-13 19:16:48,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:16:48,569 INFO L93 Difference]: Finished difference Result 394 states and 458 transitions. [2019-10-13 19:16:48,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:16:48,575 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 143 [2019-10-13 19:16:48,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:16:48,577 INFO L225 Difference]: With dead ends: 394 [2019-10-13 19:16:48,577 INFO L226 Difference]: Without dead ends: 267 [2019-10-13 19:16:48,583 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2044, Invalid=3808, Unknown=0, NotChecked=0, Total=5852 [2019-10-13 19:16:48,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2019-10-13 19:16:48,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2019-10-13 19:16:48,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2019-10-13 19:16:48,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 330 transitions. [2019-10-13 19:16:48,621 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 330 transitions. Word has length 143 [2019-10-13 19:16:48,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:16:48,622 INFO L462 AbstractCegarLoop]: Abstraction has 267 states and 330 transitions. [2019-10-13 19:16:48,622 INFO L463 AbstractCegarLoop]: Interpolant automaton has 70 states. [2019-10-13 19:16:48,622 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 330 transitions. [2019-10-13 19:16:48,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-13 19:16:48,624 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:16:48,624 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] [2019-10-13 19:16:48,625 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:16:48,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:16:48,625 INFO L82 PathProgramCache]: Analyzing trace with hash 698919756, now seen corresponding path program 1 times [2019-10-13 19:16:48,625 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:16:48,626 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639222961] [2019-10-13 19:16:48,626 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:16:48,626 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:16:48,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:16:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:16:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:16:50,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:16:50,381 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639222961] [2019-10-13 19:16:50,382 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:16:50,382 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2019-10-13 19:16:50,382 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206156107] [2019-10-13 19:16:50,383 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2019-10-13 19:16:50,383 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:16:50,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2019-10-13 19:16:50,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1928, Invalid=2902, Unknown=0, NotChecked=0, Total=4830 [2019-10-13 19:16:50,386 INFO L87 Difference]: Start difference. First operand 267 states and 330 transitions. Second operand 70 states. [2019-10-13 19:16:51,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:16:51,589 INFO L93 Difference]: Finished difference Result 390 states and 453 transitions. [2019-10-13 19:16:51,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:16:51,590 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 143 [2019-10-13 19:16:51,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:16:51,595 INFO L225 Difference]: With dead ends: 390 [2019-10-13 19:16:51,595 INFO L226 Difference]: Without dead ends: 265 [2019-10-13 19:16:51,598 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 [2019-10-13 19:16:51,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2019-10-13 19:16:51,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2019-10-13 19:16:51,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2019-10-13 19:16:51,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 327 transitions. [2019-10-13 19:16:51,613 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 327 transitions. Word has length 143 [2019-10-13 19:16:51,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:16:51,613 INFO L462 AbstractCegarLoop]: Abstraction has 265 states and 327 transitions. [2019-10-13 19:16:51,613 INFO L463 AbstractCegarLoop]: Interpolant automaton has 70 states. [2019-10-13 19:16:51,614 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 327 transitions. [2019-10-13 19:16:51,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-13 19:16:51,615 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:16:51,616 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] [2019-10-13 19:16:51,616 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:16:51,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:16:51,617 INFO L82 PathProgramCache]: Analyzing trace with hash 2054450191, now seen corresponding path program 1 times [2019-10-13 19:16:51,617 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:16:51,617 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182696152] [2019-10-13 19:16:51,617 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:16:51,618 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:16:51,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:16:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:16:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:16:53,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:16:53,325 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182696152] [2019-10-13 19:16:53,325 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:16:53,326 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2019-10-13 19:16:53,326 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020645502] [2019-10-13 19:16:53,326 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2019-10-13 19:16:53,327 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:16:53,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2019-10-13 19:16:53,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1778, Invalid=3052, Unknown=0, NotChecked=0, Total=4830 [2019-10-13 19:16:53,329 INFO L87 Difference]: Start difference. First operand 265 states and 327 transitions. Second operand 70 states. [2019-10-13 19:16:55,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:16:55,178 INFO L93 Difference]: Finished difference Result 382 states and 444 transitions. [2019-10-13 19:16:55,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 19:16:55,179 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 143 [2019-10-13 19:16:55,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:16:55,182 INFO L225 Difference]: With dead ends: 382 [2019-10-13 19:16:55,182 INFO L226 Difference]: Without dead ends: 259 [2019-10-13 19:16:55,185 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 [2019-10-13 19:16:55,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2019-10-13 19:16:55,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2019-10-13 19:16:55,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2019-10-13 19:16:55,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 318 transitions. [2019-10-13 19:16:55,212 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 318 transitions. Word has length 143 [2019-10-13 19:16:55,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:16:55,217 INFO L462 AbstractCegarLoop]: Abstraction has 259 states and 318 transitions. [2019-10-13 19:16:55,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 70 states. [2019-10-13 19:16:55,218 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 318 transitions. [2019-10-13 19:16:55,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-13 19:16:55,221 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:16:55,221 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] [2019-10-13 19:16:55,222 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:16:55,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:16:55,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1013609311, now seen corresponding path program 1 times [2019-10-13 19:16:55,223 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:16:55,224 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33332764] [2019-10-13 19:16:55,224 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:16:55,224 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:16:55,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:16:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:16:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:16:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:16:56,992 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33332764] [2019-10-13 19:16:56,992 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:16:56,992 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2019-10-13 19:16:56,992 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233757514] [2019-10-13 19:16:56,993 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2019-10-13 19:16:56,993 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:16:56,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2019-10-13 19:16:56,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1688, Invalid=3142, Unknown=0, NotChecked=0, Total=4830 [2019-10-13 19:16:56,995 INFO L87 Difference]: Start difference. First operand 259 states and 318 transitions. Second operand 70 states. [2019-10-13 19:16:58,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:16:58,830 INFO L93 Difference]: Finished difference Result 372 states and 431 transitions. [2019-10-13 19:16:58,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:16:58,832 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 143 [2019-10-13 19:16:58,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:16:58,834 INFO L225 Difference]: With dead ends: 372 [2019-10-13 19:16:58,835 INFO L226 Difference]: Without dead ends: 255 [2019-10-13 19:16:58,837 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1439 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1882, Invalid=4924, Unknown=0, NotChecked=0, Total=6806 [2019-10-13 19:16:58,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2019-10-13 19:16:58,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2019-10-13 19:16:58,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2019-10-13 19:16:58,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 312 transitions. [2019-10-13 19:16:58,847 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 312 transitions. Word has length 143 [2019-10-13 19:16:58,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:16:58,848 INFO L462 AbstractCegarLoop]: Abstraction has 255 states and 312 transitions. [2019-10-13 19:16:58,848 INFO L463 AbstractCegarLoop]: Interpolant automaton has 70 states. [2019-10-13 19:16:58,848 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 312 transitions. [2019-10-13 19:16:58,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-13 19:16:58,850 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:16:58,850 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] [2019-10-13 19:16:58,850 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:16:58,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:16:58,851 INFO L82 PathProgramCache]: Analyzing trace with hash 560132216, now seen corresponding path program 1 times [2019-10-13 19:16:58,851 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:16:58,851 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140288158] [2019-10-13 19:16:58,851 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:16:58,852 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:16:58,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:16:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:00,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:17:00,526 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140288158] [2019-10-13 19:17:00,526 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:17:00,526 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2019-10-13 19:17:00,526 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294511626] [2019-10-13 19:17:00,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2019-10-13 19:17:00,527 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:17:00,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2019-10-13 19:17:00,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1646, Invalid=3184, Unknown=0, NotChecked=0, Total=4830 [2019-10-13 19:17:00,529 INFO L87 Difference]: Start difference. First operand 255 states and 312 transitions. Second operand 70 states. [2019-10-13 19:17:02,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:17:02,189 INFO L93 Difference]: Finished difference Result 366 states and 423 transitions. [2019-10-13 19:17:02,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 19:17:02,190 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 143 [2019-10-13 19:17:02,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:17:02,192 INFO L225 Difference]: With dead ends: 366 [2019-10-13 19:17:02,192 INFO L226 Difference]: Without dead ends: 253 [2019-10-13 19:17:02,195 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1534 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1869, Invalid=5103, Unknown=0, NotChecked=0, Total=6972 [2019-10-13 19:17:02,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2019-10-13 19:17:02,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2019-10-13 19:17:02,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2019-10-13 19:17:02,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 309 transitions. [2019-10-13 19:17:02,206 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 309 transitions. Word has length 143 [2019-10-13 19:17:02,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:17:02,207 INFO L462 AbstractCegarLoop]: Abstraction has 253 states and 309 transitions. [2019-10-13 19:17:02,207 INFO L463 AbstractCegarLoop]: Interpolant automaton has 70 states. [2019-10-13 19:17:02,207 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 309 transitions. [2019-10-13 19:17:02,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-13 19:17:02,209 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:17:02,209 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:17:02,209 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:17:02,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:17:02,210 INFO L82 PathProgramCache]: Analyzing trace with hash 752755852, now seen corresponding path program 1 times [2019-10-13 19:17:02,210 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:17:02,210 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344089056] [2019-10-13 19:17:02,210 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:02,210 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:02,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:17:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:17:03,789 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344089056] [2019-10-13 19:17:03,789 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:17:03,790 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2019-10-13 19:17:03,790 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555645631] [2019-10-13 19:17:03,790 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2019-10-13 19:17:03,791 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:17:03,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2019-10-13 19:17:03,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1568, Invalid=3262, Unknown=0, NotChecked=0, Total=4830 [2019-10-13 19:17:03,792 INFO L87 Difference]: Start difference. First operand 253 states and 309 transitions. Second operand 70 states. [2019-10-13 19:17:05,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:17:05,741 INFO L93 Difference]: Finished difference Result 360 states and 416 transitions. [2019-10-13 19:17:05,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-13 19:17:05,742 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 143 [2019-10-13 19:17:05,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:17:05,744 INFO L225 Difference]: With dead ends: 360 [2019-10-13 19:17:05,744 INFO L226 Difference]: Without dead ends: 249 [2019-10-13 19:17:05,746 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 [2019-10-13 19:17:05,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2019-10-13 19:17:05,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2019-10-13 19:17:05,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2019-10-13 19:17:05,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 303 transitions. [2019-10-13 19:17:05,756 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 303 transitions. Word has length 143 [2019-10-13 19:17:05,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:17:05,756 INFO L462 AbstractCegarLoop]: Abstraction has 249 states and 303 transitions. [2019-10-13 19:17:05,756 INFO L463 AbstractCegarLoop]: Interpolant automaton has 70 states. [2019-10-13 19:17:05,756 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 303 transitions. [2019-10-13 19:17:05,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-13 19:17:05,758 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:17:05,759 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] [2019-10-13 19:17:05,759 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:17:05,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:17:05,759 INFO L82 PathProgramCache]: Analyzing trace with hash -553376648, now seen corresponding path program 1 times [2019-10-13 19:17:05,760 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:17:05,760 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804962712] [2019-10-13 19:17:05,760 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:05,760 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:05,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:17:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:07,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:17:07,534 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804962712] [2019-10-13 19:17:07,535 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:17:07,535 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2019-10-13 19:17:07,536 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181609790] [2019-10-13 19:17:07,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2019-10-13 19:17:07,537 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:17:07,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2019-10-13 19:17:07,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1498, Invalid=3332, Unknown=0, NotChecked=0, Total=4830 [2019-10-13 19:17:07,538 INFO L87 Difference]: Start difference. First operand 249 states and 303 transitions. Second operand 70 states. [2019-10-13 19:17:08,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:17:08,766 INFO L93 Difference]: Finished difference Result 352 states and 406 transitions. [2019-10-13 19:17:08,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 19:17:08,767 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 143 [2019-10-13 19:17:08,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:17:08,769 INFO L225 Difference]: With dead ends: 352 [2019-10-13 19:17:08,769 INFO L226 Difference]: Without dead ends: 245 [2019-10-13 19:17:08,771 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1884 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1857, Invalid=5799, Unknown=0, NotChecked=0, Total=7656 [2019-10-13 19:17:08,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2019-10-13 19:17:08,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2019-10-13 19:17:08,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2019-10-13 19:17:08,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 297 transitions. [2019-10-13 19:17:08,782 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 297 transitions. Word has length 143 [2019-10-13 19:17:08,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:17:08,783 INFO L462 AbstractCegarLoop]: Abstraction has 245 states and 297 transitions. [2019-10-13 19:17:08,783 INFO L463 AbstractCegarLoop]: Interpolant automaton has 70 states. [2019-10-13 19:17:08,783 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 297 transitions. [2019-10-13 19:17:08,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-13 19:17:08,785 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:17:08,785 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] [2019-10-13 19:17:08,785 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:17:08,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:17:08,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1465640920, now seen corresponding path program 1 times [2019-10-13 19:17:08,786 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:17:08,786 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195362861] [2019-10-13 19:17:08,786 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:08,787 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:08,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:17:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:10,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:17:10,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195362861] [2019-10-13 19:17:10,744 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:17:10,744 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2019-10-13 19:17:10,744 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306746540] [2019-10-13 19:17:10,744 INFO L442 AbstractCegarLoop]: Interpolant automaton has 71 states [2019-10-13 19:17:10,744 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:17:10,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2019-10-13 19:17:10,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2019-10-13 19:17:10,746 INFO L87 Difference]: Start difference. First operand 245 states and 297 transitions. Second operand 71 states.