java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:28:55,355 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:28:55,358 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:28:55,376 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:28:55,376 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:28:55,377 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:28:55,378 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:28:55,380 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:28:55,382 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:28:55,382 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:28:55,383 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:28:55,384 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:28:55,384 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:28:55,385 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:28:55,386 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:28:55,387 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:28:55,388 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:28:55,390 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:28:55,392 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:28:55,393 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:28:55,395 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:28:55,396 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:28:55,398 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 20:28:55,407 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 20:28:55,424 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:28:55,424 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:28:55,425 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:28:55,425 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:28:55,426 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:28:55,426 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:28:55,426 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:28:55,426 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:28:55,426 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:28:55,427 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:28:55,427 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:28:55,427 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:28:55,427 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:28:55,427 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:28:55,428 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:28:55,428 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:28:55,428 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:28:55,428 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:28:55,429 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:28:55,429 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:28:55,429 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:28:55,429 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:28:55,429 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:28:55,430 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:28:55,430 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:28:55,430 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:28:55,430 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:28:55,430 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:28:55,482 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:28:55,494 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:28:55,497 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:28:55,499 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:28:55,499 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:28:55,500 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label12_true-unreach-call.c [2018-10-23 20:28:55,559 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6c5e4091f/861ef4c5ff9f46e1b08510a625102724/FLAGd9de04a32 [2018-10-23 20:28:56,189 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:28:56,190 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label12_true-unreach-call.c [2018-10-23 20:28:56,209 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6c5e4091f/861ef4c5ff9f46e1b08510a625102724/FLAGd9de04a32 [2018-10-23 20:28:56,225 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6c5e4091f/861ef4c5ff9f46e1b08510a625102724 [2018-10-23 20:28:56,237 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:28:56,239 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:28:56,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:28:56,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:28:56,245 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:28:56,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:28:56" (1/1) ... [2018-10-23 20:28:56,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40fe915e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:28:56, skipping insertion in model container [2018-10-23 20:28:56,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:28:56" (1/1) ... [2018-10-23 20:28:56,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:28:56,352 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:28:57,194 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:28:57,199 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:28:57,517 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:28:57,537 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:28:57,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:28:57 WrapperNode [2018-10-23 20:28:57,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:28:57,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:28:57,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:28:57,539 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:28:57,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:28:57" (1/1) ... [2018-10-23 20:28:57,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:28:57" (1/1) ... [2018-10-23 20:28:57,963 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:28:57,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:28:57,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:28:57,964 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:28:57,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:28:57" (1/1) ... [2018-10-23 20:28:57,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:28:57" (1/1) ... [2018-10-23 20:28:57,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:28:57" (1/1) ... [2018-10-23 20:28:58,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:28:57" (1/1) ... [2018-10-23 20:28:58,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:28:57" (1/1) ... [2018-10-23 20:28:58,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:28:57" (1/1) ... [2018-10-23 20:28:58,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:28:57" (1/1) ... [2018-10-23 20:28:58,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:28:58,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:28:58,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:28:58,190 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:28:58,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:28:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 20:28:58,265 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:28:58,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:28:58,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:29:06,914 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:29:06,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:29:06 BoogieIcfgContainer [2018-10-23 20:29:06,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:29:06,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:29:06,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:29:06,919 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:29:06,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:28:56" (1/3) ... [2018-10-23 20:29:06,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16fdbb24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:29:06, skipping insertion in model container [2018-10-23 20:29:06,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:28:57" (2/3) ... [2018-10-23 20:29:06,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16fdbb24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:29:06, skipping insertion in model container [2018-10-23 20:29:06,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:29:06" (3/3) ... [2018-10-23 20:29:06,924 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label12_true-unreach-call.c [2018-10-23 20:29:06,934 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:29:06,944 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:29:06,962 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:29:07,002 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:29:07,003 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:29:07,004 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:29:07,004 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:29:07,004 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:29:07,004 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:29:07,004 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:29:07,005 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:29:07,005 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:29:07,033 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states. [2018-10-23 20:29:07,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-23 20:29:07,044 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:29:07,045 INFO L375 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] [2018-10-23 20:29:07,048 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:29:07,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:29:07,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1074201598, now seen corresponding path program 1 times [2018-10-23 20:29:07,057 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:29:07,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:29:07,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:29:07,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:29:07,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:29:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:29:07,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:29:07,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:29:07,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:29:07,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:29:07,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:29:07,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:29:07,566 INFO L87 Difference]: Start difference. First operand 425 states. Second operand 4 states. [2018-10-23 20:29:21,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:29:21,208 INFO L93 Difference]: Finished difference Result 1474 states and 2723 transitions. [2018-10-23 20:29:21,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:29:21,211 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-10-23 20:29:21,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:29:21,248 INFO L225 Difference]: With dead ends: 1474 [2018-10-23 20:29:21,248 INFO L226 Difference]: Without dead ends: 1042 [2018-10-23 20:29:21,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:29:21,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2018-10-23 20:29:21,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 1040. [2018-10-23 20:29:21,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2018-10-23 20:29:21,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1638 transitions. [2018-10-23 20:29:21,409 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1638 transitions. Word has length 60 [2018-10-23 20:29:21,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:29:21,410 INFO L481 AbstractCegarLoop]: Abstraction has 1040 states and 1638 transitions. [2018-10-23 20:29:21,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:29:21,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1638 transitions. [2018-10-23 20:29:21,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-23 20:29:21,420 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:29:21,420 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:29:21,421 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:29:21,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:29:21,422 INFO L82 PathProgramCache]: Analyzing trace with hash 694588061, now seen corresponding path program 1 times [2018-10-23 20:29:21,422 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:29:21,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:29:21,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:29:21,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:29:21,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:29:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:29:21,659 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:29:21,660 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:29:21,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:29:21,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:29:21,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:29:21,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:29:21,662 INFO L87 Difference]: Start difference. First operand 1040 states and 1638 transitions. Second operand 4 states. [2018-10-23 20:29:30,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:29:30,186 INFO L93 Difference]: Finished difference Result 3886 states and 6226 transitions. [2018-10-23 20:29:30,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:29:30,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2018-10-23 20:29:30,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:29:30,209 INFO L225 Difference]: With dead ends: 3886 [2018-10-23 20:29:30,210 INFO L226 Difference]: Without dead ends: 2848 [2018-10-23 20:29:30,214 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:29:30,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2018-10-23 20:29:30,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 2846. [2018-10-23 20:29:30,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2846 states. [2018-10-23 20:29:30,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2846 states to 2846 states and 4045 transitions. [2018-10-23 20:29:30,288 INFO L78 Accepts]: Start accepts. Automaton has 2846 states and 4045 transitions. Word has length 126 [2018-10-23 20:29:30,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:29:30,289 INFO L481 AbstractCegarLoop]: Abstraction has 2846 states and 4045 transitions. [2018-10-23 20:29:30,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:29:30,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2846 states and 4045 transitions. [2018-10-23 20:29:30,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-10-23 20:29:30,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:29:30,301 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:29:30,301 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:29:30,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:29:30,303 INFO L82 PathProgramCache]: Analyzing trace with hash -441522345, now seen corresponding path program 1 times [2018-10-23 20:29:30,303 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:29:30,303 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:29:30,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:29:30,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:29:30,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:29:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:29:30,862 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 267 proven. 4 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-10-23 20:29:30,862 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:29:30,863 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:29:30,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:29:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:29:30,986 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:29:31,093 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-10-23 20:29:31,124 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:29:31,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 20:29:31,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:29:31,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:29:31,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:29:31,126 INFO L87 Difference]: Start difference. First operand 2846 states and 4045 transitions. Second operand 4 states. [2018-10-23 20:29:37,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:29:37,953 INFO L93 Difference]: Finished difference Result 10860 states and 15562 transitions. [2018-10-23 20:29:37,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:29:37,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 305 [2018-10-23 20:29:37,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:29:37,993 INFO L225 Difference]: With dead ends: 10860 [2018-10-23 20:29:37,993 INFO L226 Difference]: Without dead ends: 8016 [2018-10-23 20:29:37,999 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:29:38,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8016 states. [2018-10-23 20:29:38,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8016 to 4647. [2018-10-23 20:29:38,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4647 states. [2018-10-23 20:29:38,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4647 states to 4647 states and 6280 transitions. [2018-10-23 20:29:38,112 INFO L78 Accepts]: Start accepts. Automaton has 4647 states and 6280 transitions. Word has length 305 [2018-10-23 20:29:38,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:29:38,113 INFO L481 AbstractCegarLoop]: Abstraction has 4647 states and 6280 transitions. [2018-10-23 20:29:38,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:29:38,113 INFO L276 IsEmpty]: Start isEmpty. Operand 4647 states and 6280 transitions. [2018-10-23 20:29:38,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-10-23 20:29:38,119 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:29:38,119 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:29:38,120 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:29:38,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:29:38,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1395770003, now seen corresponding path program 1 times [2018-10-23 20:29:38,123 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:29:38,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:29:38,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:29:38,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:29:38,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:29:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:29:38,952 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-10-23 20:29:38,953 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:29:38,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:29:38,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:29:38,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:29:38,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:29:38,954 INFO L87 Difference]: Start difference. First operand 4647 states and 6280 transitions. Second operand 5 states. [2018-10-23 20:29:46,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:29:46,774 INFO L93 Difference]: Finished difference Result 11094 states and 14546 transitions. [2018-10-23 20:29:46,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:29:46,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 334 [2018-10-23 20:29:46,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:29:46,801 INFO L225 Difference]: With dead ends: 11094 [2018-10-23 20:29:46,801 INFO L226 Difference]: Without dead ends: 6449 [2018-10-23 20:29:46,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:29:46,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6449 states. [2018-10-23 20:29:46,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6449 to 6148. [2018-10-23 20:29:46,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6148 states. [2018-10-23 20:29:46,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 7879 transitions. [2018-10-23 20:29:46,921 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 7879 transitions. Word has length 334 [2018-10-23 20:29:46,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:29:46,921 INFO L481 AbstractCegarLoop]: Abstraction has 6148 states and 7879 transitions. [2018-10-23 20:29:46,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:29:46,922 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 7879 transitions. [2018-10-23 20:29:46,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-10-23 20:29:46,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:29:46,933 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:29:46,933 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:29:46,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:29:46,934 INFO L82 PathProgramCache]: Analyzing trace with hash 834978299, now seen corresponding path program 1 times [2018-10-23 20:29:46,934 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:29:46,934 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:29:46,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:29:46,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:29:46,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:29:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:29:47,590 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 20:29:48,185 WARN L179 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 21 [2018-10-23 20:29:48,596 WARN L179 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 22 [2018-10-23 20:29:49,286 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 8 [2018-10-23 20:29:49,702 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 115 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:29:49,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:29:49,703 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:29:49,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:29:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:29:49,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:29:49,957 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:29:49,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:29:49,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2018-10-23 20:29:49,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-23 20:29:49,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-23 20:29:49,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-10-23 20:29:49,982 INFO L87 Difference]: Start difference. First operand 6148 states and 7879 transitions. Second operand 11 states. [2018-10-23 20:30:09,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:30:09,211 INFO L93 Difference]: Finished difference Result 19376 states and 25507 transitions. [2018-10-23 20:30:09,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-23 20:30:09,213 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 408 [2018-10-23 20:30:09,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:30:09,269 INFO L225 Difference]: With dead ends: 19376 [2018-10-23 20:30:09,270 INFO L226 Difference]: Without dead ends: 13230 [2018-10-23 20:30:09,279 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 417 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2018-10-23 20:30:09,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13230 states. [2018-10-23 20:30:09,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13230 to 12180. [2018-10-23 20:30:09,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12180 states. [2018-10-23 20:30:09,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12180 states to 12180 states and 15424 transitions. [2018-10-23 20:30:09,513 INFO L78 Accepts]: Start accepts. Automaton has 12180 states and 15424 transitions. Word has length 408 [2018-10-23 20:30:09,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:30:09,514 INFO L481 AbstractCegarLoop]: Abstraction has 12180 states and 15424 transitions. [2018-10-23 20:30:09,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-23 20:30:09,514 INFO L276 IsEmpty]: Start isEmpty. Operand 12180 states and 15424 transitions. [2018-10-23 20:30:09,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2018-10-23 20:30:09,556 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:30:09,557 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:30:09,557 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:30:09,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:30:09,558 INFO L82 PathProgramCache]: Analyzing trace with hash 366757803, now seen corresponding path program 1 times [2018-10-23 20:30:09,558 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:30:09,558 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:30:09,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:30:09,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:30:09,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:30:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:30:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 554 proven. 0 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2018-10-23 20:30:10,389 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:30:10,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:30:10,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:30:10,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:30:10,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:30:10,391 INFO L87 Difference]: Start difference. First operand 12180 states and 15424 transitions. Second operand 3 states. [2018-10-23 20:30:14,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:30:14,480 INFO L93 Difference]: Finished difference Result 24656 states and 31391 transitions. [2018-10-23 20:30:14,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:30:14,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 715 [2018-10-23 20:30:14,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:30:14,505 INFO L225 Difference]: With dead ends: 24656 [2018-10-23 20:30:14,505 INFO L226 Difference]: Without dead ends: 12478 [2018-10-23 20:30:14,519 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:30:14,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12478 states. [2018-10-23 20:30:14,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12478 to 12178. [2018-10-23 20:30:14,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12178 states. [2018-10-23 20:30:14,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12178 states to 12178 states and 15420 transitions. [2018-10-23 20:30:14,696 INFO L78 Accepts]: Start accepts. Automaton has 12178 states and 15420 transitions. Word has length 715 [2018-10-23 20:30:14,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:30:14,697 INFO L481 AbstractCegarLoop]: Abstraction has 12178 states and 15420 transitions. [2018-10-23 20:30:14,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:30:14,697 INFO L276 IsEmpty]: Start isEmpty. Operand 12178 states and 15420 transitions. [2018-10-23 20:30:14,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2018-10-23 20:30:14,740 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:30:14,740 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:30:14,741 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:30:14,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:30:14,741 INFO L82 PathProgramCache]: Analyzing trace with hash 2142341883, now seen corresponding path program 1 times [2018-10-23 20:30:14,741 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:30:14,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:30:14,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:30:14,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:30:14,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:30:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:30:15,584 WARN L179 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-10-23 20:30:15,891 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-10-23 20:30:16,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 853 proven. 4 refuted. 0 times theorem prover too weak. 479 trivial. 0 not checked. [2018-10-23 20:30:16,919 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:30:16,919 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:30:16,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:30:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:30:17,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:30:17,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 759 proven. 0 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2018-10-23 20:30:17,672 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:30:17,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-23 20:30:17,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 20:30:17,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 20:30:17,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:30:17,674 INFO L87 Difference]: Start difference. First operand 12178 states and 15420 transitions. Second operand 8 states. [2018-10-23 20:30:26,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:30:26,658 INFO L93 Difference]: Finished difference Result 29024 states and 36063 transitions. [2018-10-23 20:30:26,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 20:30:26,658 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 742 [2018-10-23 20:30:26,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:30:26,687 INFO L225 Difference]: With dead ends: 29024 [2018-10-23 20:30:26,688 INFO L226 Difference]: Without dead ends: 12773 [2018-10-23 20:30:26,704 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 745 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-10-23 20:30:26,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12773 states. [2018-10-23 20:30:26,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12773 to 12473. [2018-10-23 20:30:26,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12473 states. [2018-10-23 20:30:26,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12473 states to 12473 states and 14165 transitions. [2018-10-23 20:30:26,880 INFO L78 Accepts]: Start accepts. Automaton has 12473 states and 14165 transitions. Word has length 742 [2018-10-23 20:30:26,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:30:26,880 INFO L481 AbstractCegarLoop]: Abstraction has 12473 states and 14165 transitions. [2018-10-23 20:30:26,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 20:30:26,880 INFO L276 IsEmpty]: Start isEmpty. Operand 12473 states and 14165 transitions. [2018-10-23 20:30:26,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2018-10-23 20:30:26,899 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:30:26,900 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:30:26,900 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:30:26,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:30:26,901 INFO L82 PathProgramCache]: Analyzing trace with hash -170606789, now seen corresponding path program 1 times [2018-10-23 20:30:26,901 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:30:26,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:30:26,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:30:26,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:30:26,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:30:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:30:28,386 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 58 proven. 555 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2018-10-23 20:30:28,386 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:30:28,386 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:30:28,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:30:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:30:28,575 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:30:30,157 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_1 Int)) (and (<= (mod v_prenex_1 299926) (+ c_~a0~0 300072)) (<= (+ v_prenex_1 44) 0) (<= 0 v_prenex_1))) (exists ((v_~a0~0_825 Int)) (let ((.cse0 (mod v_~a0~0_825 299926))) (and (<= (+ v_~a0~0_825 44) 0) (<= .cse0 (+ c_~a0~0 300072)) (= .cse0 0)))) (exists ((v_prenex_2 Int)) (let ((.cse1 (mod v_prenex_2 299926))) (and (<= (+ v_prenex_2 44) 0) (< v_prenex_2 0) (<= .cse1 (+ c_~a0~0 599998)) (not (= .cse1 0)))))) is different from true [2018-10-23 20:30:33,028 WARN L179 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 164 DAG size of output: 23 [2018-10-23 20:30:35,179 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 0 proven. 173 refuted. 0 times theorem prover too weak. 350 trivial. 440 not checked. [2018-10-23 20:30:35,311 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:30:35,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-10-23 20:30:35,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 20:30:35,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 20:30:35,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=35, Unknown=1, NotChecked=12, Total=72 [2018-10-23 20:30:35,320 INFO L87 Difference]: Start difference. First operand 12473 states and 14165 transitions. Second operand 9 states. [2018-10-23 20:30:48,000 WARN L179 SmtUtils]: Spent 5.60 s on a formula simplification. DAG size of input: 38 DAG size of output: 19 [2018-10-23 20:30:55,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:30:55,868 INFO L93 Difference]: Finished difference Result 40842 states and 46014 transitions. [2018-10-23 20:30:55,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 20:30:55,869 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 755 [2018-10-23 20:30:55,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:30:55,917 INFO L225 Difference]: With dead ends: 40842 [2018-10-23 20:30:55,917 INFO L226 Difference]: Without dead ends: 28371 [2018-10-23 20:30:55,934 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 763 GetRequests, 752 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=42, Invalid=70, Unknown=2, NotChecked=18, Total=132 [2018-10-23 20:30:55,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28371 states. [2018-10-23 20:30:56,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28371 to 19605. [2018-10-23 20:30:56,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19605 states. [2018-10-23 20:30:56,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19605 states to 19605 states and 22358 transitions. [2018-10-23 20:30:56,277 INFO L78 Accepts]: Start accepts. Automaton has 19605 states and 22358 transitions. Word has length 755 [2018-10-23 20:30:56,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:30:56,278 INFO L481 AbstractCegarLoop]: Abstraction has 19605 states and 22358 transitions. [2018-10-23 20:30:56,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 20:30:56,279 INFO L276 IsEmpty]: Start isEmpty. Operand 19605 states and 22358 transitions. [2018-10-23 20:30:56,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2018-10-23 20:30:56,305 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:30:56,306 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:30:56,307 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:30:56,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:30:56,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1189992754, now seen corresponding path program 1 times [2018-10-23 20:30:56,308 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:30:56,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:30:56,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:30:56,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:30:56,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:30:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:30:57,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1228 backedges. 928 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-10-23 20:30:57,136 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:30:57,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:30:57,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:30:57,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:30:57,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:30:57,137 INFO L87 Difference]: Start difference. First operand 19605 states and 22358 transitions. Second operand 4 states. [2018-10-23 20:31:01,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:31:01,745 INFO L93 Difference]: Finished difference Result 38911 states and 44419 transitions. [2018-10-23 20:31:01,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:31:01,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 784 [2018-10-23 20:31:01,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:31:01,769 INFO L225 Difference]: With dead ends: 38911 [2018-10-23 20:31:01,769 INFO L226 Difference]: Without dead ends: 19608 [2018-10-23 20:31:01,785 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:31:01,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19608 states. [2018-10-23 20:31:02,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19608 to 19599. [2018-10-23 20:31:02,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19599 states. [2018-10-23 20:31:02,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19599 states to 19599 states and 21753 transitions. [2018-10-23 20:31:02,051 INFO L78 Accepts]: Start accepts. Automaton has 19599 states and 21753 transitions. Word has length 784 [2018-10-23 20:31:02,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:31:02,052 INFO L481 AbstractCegarLoop]: Abstraction has 19599 states and 21753 transitions. [2018-10-23 20:31:02,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:31:02,052 INFO L276 IsEmpty]: Start isEmpty. Operand 19599 states and 21753 transitions. [2018-10-23 20:31:02,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2018-10-23 20:31:02,075 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:31:02,075 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:31:02,076 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:31:02,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:31:02,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1223067402, now seen corresponding path program 1 times [2018-10-23 20:31:02,076 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:31:02,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:31:02,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:31:02,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:31:02,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:31:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:31:03,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1031 backedges. 636 proven. 53 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-10-23 20:31:03,101 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:31:03,101 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:31:03,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:31:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:31:03,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:31:03,865 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 20 [2018-10-23 20:31:05,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1031 backedges. 707 proven. 135 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2018-10-23 20:31:05,096 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:31:05,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-10-23 20:31:05,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 20:31:05,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 20:31:05,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:31:05,098 INFO L87 Difference]: Start difference. First operand 19599 states and 21753 transitions. Second operand 8 states. [2018-10-23 20:31:20,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:31:20,764 INFO L93 Difference]: Finished difference Result 71675 states and 79886 transitions. [2018-10-23 20:31:20,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-23 20:31:20,764 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 790 [2018-10-23 20:31:20,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:31:20,832 INFO L225 Difference]: With dead ends: 71675 [2018-10-23 20:31:20,832 INFO L226 Difference]: Without dead ends: 52378 [2018-10-23 20:31:20,855 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 793 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2018-10-23 20:31:20,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52378 states. [2018-10-23 20:31:21,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52378 to 35739. [2018-10-23 20:31:21,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35739 states. [2018-10-23 20:31:21,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35739 states to 35739 states and 38401 transitions. [2018-10-23 20:31:21,459 INFO L78 Accepts]: Start accepts. Automaton has 35739 states and 38401 transitions. Word has length 790 [2018-10-23 20:31:21,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:31:21,460 INFO L481 AbstractCegarLoop]: Abstraction has 35739 states and 38401 transitions. [2018-10-23 20:31:21,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 20:31:21,460 INFO L276 IsEmpty]: Start isEmpty. Operand 35739 states and 38401 transitions. [2018-10-23 20:31:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2018-10-23 20:31:21,486 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:31:21,487 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:31:21,487 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:31:21,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:31:21,488 INFO L82 PathProgramCache]: Analyzing trace with hash 360317674, now seen corresponding path program 1 times [2018-10-23 20:31:21,488 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:31:21,488 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:31:21,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:31:21,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:31:21,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:31:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:31:22,190 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-10-23 20:31:22,420 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 10 [2018-10-23 20:31:23,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 643 proven. 58 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2018-10-23 20:31:23,089 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:31:23,089 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:31:23,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:31:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:31:23,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:31:23,761 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 17 [2018-10-23 20:31:24,061 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 26 [2018-10-23 20:31:25,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 701 proven. 0 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2018-10-23 20:31:25,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:31:25,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2018-10-23 20:31:25,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-23 20:31:25,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-23 20:31:25,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-10-23 20:31:25,443 INFO L87 Difference]: Start difference. First operand 35739 states and 38401 transitions. Second operand 11 states. [2018-10-23 20:32:42,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:32:42,750 INFO L93 Difference]: Finished difference Result 94098 states and 101437 transitions. [2018-10-23 20:32:42,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-23 20:32:42,750 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 802 [2018-10-23 20:32:42,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:32:42,813 INFO L225 Difference]: With dead ends: 94098 [2018-10-23 20:32:42,813 INFO L226 Difference]: Without dead ends: 60763 [2018-10-23 20:32:42,834 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 844 GetRequests, 817 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=228, Invalid=474, Unknown=0, NotChecked=0, Total=702 [2018-10-23 20:32:42,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60763 states. [2018-10-23 20:32:43,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60763 to 44753. [2018-10-23 20:32:43,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44753 states. [2018-10-23 20:32:43,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44753 states to 44753 states and 48035 transitions. [2018-10-23 20:32:43,436 INFO L78 Accepts]: Start accepts. Automaton has 44753 states and 48035 transitions. Word has length 802 [2018-10-23 20:32:43,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:32:43,436 INFO L481 AbstractCegarLoop]: Abstraction has 44753 states and 48035 transitions. [2018-10-23 20:32:43,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-23 20:32:43,436 INFO L276 IsEmpty]: Start isEmpty. Operand 44753 states and 48035 transitions. [2018-10-23 20:32:43,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 834 [2018-10-23 20:32:43,459 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:32:43,460 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:32:43,460 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:32:43,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:32:43,461 INFO L82 PathProgramCache]: Analyzing trace with hash 973191682, now seen corresponding path program 1 times [2018-10-23 20:32:43,461 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:32:43,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:32:43,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:43,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:32:43,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:32:45,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1464 backedges. 895 proven. 228 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2018-10-23 20:32:45,350 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:32:45,350 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:32:45,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:32:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:32:45,573 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:32:46,655 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_36 Int)) (let ((.cse0 (mod v_prenex_36 299926))) (and (< v_prenex_36 0) (<= .cse0 (+ c_~a0~0 600001)) (not (= .cse0 0))))) (exists ((v_~a0~0_827 Int)) (let ((.cse1 (mod v_~a0~0_827 299926))) (and (<= .cse1 (+ c_~a0~0 300075)) (= .cse1 0)))) (exists ((v_prenex_35 Int)) (and (<= (mod v_prenex_35 299926) (+ c_~a0~0 300075)) (<= 0 v_prenex_35)))) is different from true [2018-10-23 20:32:47,532 WARN L179 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 20 [2018-10-23 20:32:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1464 backedges. 895 proven. 0 refuted. 0 times theorem prover too weak. 453 trivial. 116 not checked. [2018-10-23 20:32:49,768 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:32:49,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-10-23 20:32:49,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:32:49,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:32:49,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2018-10-23 20:32:49,771 INFO L87 Difference]: Start difference. First operand 44753 states and 48035 transitions. Second operand 7 states. [2018-10-23 20:32:58,757 WARN L179 SmtUtils]: Spent 5.23 s on a formula simplification. DAG size of input: 33 DAG size of output: 18 Received shutdown request... [2018-10-23 20:33:02,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 20:33:02,074 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:33:02,079 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:33:02,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:33:02 BoogieIcfgContainer [2018-10-23 20:33:02,079 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:33:02,080 INFO L168 Benchmark]: Toolchain (without parser) took 245841.96 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 822.9 MB. Max. memory is 7.1 GB. [2018-10-23 20:33:02,081 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:33:02,082 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1297.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:33:02,082 INFO L168 Benchmark]: Boogie Procedure Inliner took 424.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 782.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -901.6 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-23 20:33:02,085 INFO L168 Benchmark]: Boogie Preprocessor took 225.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2018-10-23 20:33:02,086 INFO L168 Benchmark]: RCFGBuilder took 8725.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 309.3 MB). Peak memory consumption was 309.3 MB. Max. memory is 7.1 GB. [2018-10-23 20:33:02,087 INFO L168 Benchmark]: TraceAbstraction took 235163.51 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 3.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 509.8 MB. Max. memory is 7.1 GB. [2018-10-23 20:33:02,092 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1297.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 424.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 782.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -901.6 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 225.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8725.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 309.3 MB). Peak memory consumption was 309.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235163.51 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 3.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 509.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 184]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 184). Cancelled while BasicCegarLoop was constructing difference of abstraction (44753states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 8 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 425 locations, 1 error locations. TIMEOUT Result, 235.0s OverallTime, 12 OverallIterations, 6 TraceHistogramMax, 200.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3049 SDtfs, 24100 SDslu, 3093 SDs, 0 SdLazy, 48991 SolverSat, 9827 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 167.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4779 GetRequests, 4670 SyntacticMatches, 16 SemanticMatches, 92 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 25.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44753occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 11 MinimizatonAttempts, 46748 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 23.6s InterpolantComputationTime, 11289 NumberOfCodeBlocks, 11289 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 11270 ConstructedInterpolants, 1040 QuantifiedInterpolants, 55274976 SizeOfPredicates, 5 NumberOfNonLiveVariables, 5498 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 19 InterpolantComputations, 9 PerfectInterpolantSequences, 13525/15367 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown