/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/psyco/psyco_net_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:11:27,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:11:27,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:11:27,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 03:11:27,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:11:27,915 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:11:27,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:11:27,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:11:27,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:11:27,919 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:11:27,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:11:27,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:11:27,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:11:27,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:11:27,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:11:27,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:11:27,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:11:27,922 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:11:27,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:11:27,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:11:27,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:11:27,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:11:27,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:11:27,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:11:27,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:11:27,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:11:27,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:11:27,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:11:27,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:11:27,926 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:11:27,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:11:28,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:11:28,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:11:28,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:11:28,421 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:11:28,422 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:11:28,423 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/psyco/psyco_net_1.c [2020-12-22 03:11:28,546 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/286d2544e/56daab09ab594300bc7536714afc8e89/FLAG0a01ef81e [2020-12-22 03:11:30,551 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:11:30,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_net_1.c [2020-12-22 03:11:30,707 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/286d2544e/56daab09ab594300bc7536714afc8e89/FLAG0a01ef81e [2020-12-22 03:11:31,190 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/286d2544e/56daab09ab594300bc7536714afc8e89 [2020-12-22 03:11:31,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:11:31,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:11:31,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:11:31,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:11:31,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:11:31,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:11:31" (1/1) ... [2020-12-22 03:11:31,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f7db123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:31, skipping insertion in model container [2020-12-22 03:11:31,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:11:31" (1/1) ... [2020-12-22 03:11:31,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:11:31,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:11:33,870 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_net_1.c[2349407,2349420] [2020-12-22 03:11:33,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:11:33,948 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:11:35,004 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_net_1.c[2349407,2349420] [2020-12-22 03:11:35,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:11:35,076 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:11:35,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:35 WrapperNode [2020-12-22 03:11:35,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:11:35,080 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:11:35,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:11:35,081 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:11:35,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:35" (1/1) ... [2020-12-22 03:11:35,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:35" (1/1) ... [2020-12-22 03:11:36,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:11:36,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:11:36,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:11:36,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:11:36,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:35" (1/1) ... [2020-12-22 03:11:36,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:35" (1/1) ... [2020-12-22 03:11:37,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:35" (1/1) ... [2020-12-22 03:11:37,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:35" (1/1) ... [2020-12-22 03:11:37,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:35" (1/1) ... [2020-12-22 03:11:38,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:35" (1/1) ... [2020-12-22 03:11:38,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:35" (1/1) ... [2020-12-22 03:11:38,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:11:38,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:11:38,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:11:38,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:11:38,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:35" (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 [2020-12-22 03:11:39,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:11:39,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:11:39,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:11:39,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:12:06,615 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:12:06,616 INFO L299 CfgBuilder]: Removed 1134 assume(true) statements. [2020-12-22 03:12:06,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:12:06 BoogieIcfgContainer [2020-12-22 03:12:06,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:12:06,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:12:06,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:12:06,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:12:06,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:11:31" (1/3) ... [2020-12-22 03:12:06,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b13f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:12:06, skipping insertion in model container [2020-12-22 03:12:06,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:35" (2/3) ... [2020-12-22 03:12:06,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b13f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:12:06, skipping insertion in model container [2020-12-22 03:12:06,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:12:06" (3/3) ... [2020-12-22 03:12:06,642 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_net_1.c [2020-12-22 03:12:06,650 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:12:06,664 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:12:06,690 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:12:06,758 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:12:06,759 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:12:06,759 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:12:06,759 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:12:06,759 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:12:06,759 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:12:06,760 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:12:06,760 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:12:06,914 INFO L276 IsEmpty]: Start isEmpty. Operand 9211 states. [2020-12-22 03:12:06,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 03:12:06,922 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:12:06,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:12:06,924 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:12:06,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:12:06,932 INFO L82 PathProgramCache]: Analyzing trace with hash 352619045, now seen corresponding path program 1 times [2020-12-22 03:12:06,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:12:06,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133652561] [2020-12-22 03:12:06,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:12:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:12:07,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:12:07,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133652561] [2020-12-22 03:12:07,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:12:07,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:12:07,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696483022] [2020-12-22 03:12:07,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:12:07,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:12:07,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:12:07,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:12:07,356 INFO L87 Difference]: Start difference. First operand 9211 states. Second operand 2 states. [2020-12-22 03:12:07,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:12:07,721 INFO L93 Difference]: Finished difference Result 17698 states and 35380 transitions. [2020-12-22 03:12:07,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:12:07,723 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-22 03:12:07,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:12:07,852 INFO L225 Difference]: With dead ends: 17698 [2020-12-22 03:12:07,852 INFO L226 Difference]: Without dead ends: 8280 [2020-12-22 03:12:07,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:12:07,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2020-12-22 03:12:08,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8280. [2020-12-22 03:12:08,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8280 states. [2020-12-22 03:12:08,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8280 states to 8280 states and 12997 transitions. [2020-12-22 03:12:08,269 INFO L78 Accepts]: Start accepts. Automaton has 8280 states and 12997 transitions. Word has length 9 [2020-12-22 03:12:08,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:12:08,269 INFO L481 AbstractCegarLoop]: Abstraction has 8280 states and 12997 transitions. [2020-12-22 03:12:08,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:12:08,270 INFO L276 IsEmpty]: Start isEmpty. Operand 8280 states and 12997 transitions. [2020-12-22 03:12:08,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 03:12:08,272 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:12:08,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:12:08,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:12:08,274 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:12:08,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:12:08,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1422650027, now seen corresponding path program 1 times [2020-12-22 03:12:08,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:12:08,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499699109] [2020-12-22 03:12:08,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:12:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:12:08,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:12:08,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499699109] [2020-12-22 03:12:08,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:12:08,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:12:08,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724570921] [2020-12-22 03:12:08,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:12:08,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:12:08,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:12:08,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:12:08,501 INFO L87 Difference]: Start difference. First operand 8280 states and 12997 transitions. Second operand 3 states. [2020-12-22 03:12:10,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:12:10,846 INFO L93 Difference]: Finished difference Result 16561 states and 25996 transitions. [2020-12-22 03:12:10,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:12:10,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-22 03:12:10,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:12:10,897 INFO L225 Difference]: With dead ends: 16561 [2020-12-22 03:12:10,897 INFO L226 Difference]: Without dead ends: 8283 [2020-12-22 03:12:10,908 INFO L677 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 [2020-12-22 03:12:10,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8283 states. [2020-12-22 03:12:11,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8283 to 8283. [2020-12-22 03:12:11,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8283 states. [2020-12-22 03:12:11,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8283 states to 8283 states and 13000 transitions. [2020-12-22 03:12:11,110 INFO L78 Accepts]: Start accepts. Automaton has 8283 states and 13000 transitions. Word has length 10 [2020-12-22 03:12:11,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:12:11,111 INFO L481 AbstractCegarLoop]: Abstraction has 8283 states and 13000 transitions. [2020-12-22 03:12:11,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:12:11,111 INFO L276 IsEmpty]: Start isEmpty. Operand 8283 states and 13000 transitions. [2020-12-22 03:12:11,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 03:12:11,113 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:12:11,113 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:12:11,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:12:11,114 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:12:11,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:12:11,119 INFO L82 PathProgramCache]: Analyzing trace with hash 658080264, now seen corresponding path program 1 times [2020-12-22 03:12:11,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:12:11,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453027372] [2020-12-22 03:12:11,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:12:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:12:11,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:12:11,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453027372] [2020-12-22 03:12:11,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:12:11,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:12:11,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843494038] [2020-12-22 03:12:11,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:12:11,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:12:11,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:12:11,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:12:11,279 INFO L87 Difference]: Start difference. First operand 8283 states and 13000 transitions. Second operand 3 states. [2020-12-22 03:12:13,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:12:13,720 INFO L93 Difference]: Finished difference Result 16569 states and 26005 transitions. [2020-12-22 03:12:13,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:12:13,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-22 03:12:13,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:12:13,767 INFO L225 Difference]: With dead ends: 16569 [2020-12-22 03:12:13,767 INFO L226 Difference]: Without dead ends: 8289 [2020-12-22 03:12:13,784 INFO L677 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 [2020-12-22 03:12:13,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8289 states. [2020-12-22 03:12:13,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8289 to 8287. [2020-12-22 03:12:13,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8287 states. [2020-12-22 03:12:13,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8287 states to 8287 states and 13004 transitions. [2020-12-22 03:12:13,963 INFO L78 Accepts]: Start accepts. Automaton has 8287 states and 13004 transitions. Word has length 15 [2020-12-22 03:12:13,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:12:13,970 INFO L481 AbstractCegarLoop]: Abstraction has 8287 states and 13004 transitions. [2020-12-22 03:12:13,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:12:13,970 INFO L276 IsEmpty]: Start isEmpty. Operand 8287 states and 13004 transitions. [2020-12-22 03:12:13,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 03:12:13,972 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:12:13,972 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:12:13,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 03:12:13,972 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:12:13,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:12:13,973 INFO L82 PathProgramCache]: Analyzing trace with hash 505082677, now seen corresponding path program 1 times [2020-12-22 03:12:13,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:12:13,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699568508] [2020-12-22 03:12:13,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:12:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:12:14,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:12:14,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699568508] [2020-12-22 03:12:14,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:12:14,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:12:14,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552136767] [2020-12-22 03:12:14,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:12:14,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:12:14,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:12:14,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:12:14,133 INFO L87 Difference]: Start difference. First operand 8287 states and 13004 transitions. Second operand 3 states. [2020-12-22 03:12:19,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:12:19,474 INFO L93 Difference]: Finished difference Result 16491 states and 25885 transitions. [2020-12-22 03:12:19,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:12:19,475 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-22 03:12:19,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:12:19,496 INFO L225 Difference]: With dead ends: 16491 [2020-12-22 03:12:19,496 INFO L226 Difference]: Without dead ends: 8165 [2020-12-22 03:12:19,505 INFO L677 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 [2020-12-22 03:12:19,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8165 states. [2020-12-22 03:12:19,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8165 to 8165. [2020-12-22 03:12:19,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8165 states. [2020-12-22 03:12:19,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8165 states to 8165 states and 12381 transitions. [2020-12-22 03:12:19,674 INFO L78 Accepts]: Start accepts. Automaton has 8165 states and 12381 transitions. Word has length 19 [2020-12-22 03:12:19,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:12:19,674 INFO L481 AbstractCegarLoop]: Abstraction has 8165 states and 12381 transitions. [2020-12-22 03:12:19,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:12:19,675 INFO L276 IsEmpty]: Start isEmpty. Operand 8165 states and 12381 transitions. [2020-12-22 03:12:19,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 03:12:19,676 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:12:19,676 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:12:19,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 03:12:19,676 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:12:19,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:12:19,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1597993323, now seen corresponding path program 1 times [2020-12-22 03:12:19,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:12:19,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669707188] [2020-12-22 03:12:19,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:12:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:12:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:12:19,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669707188] [2020-12-22 03:12:19,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:12:19,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:12:19,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724198936] [2020-12-22 03:12:19,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:12:19,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:12:19,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:12:19,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:12:19,760 INFO L87 Difference]: Start difference. First operand 8165 states and 12381 transitions. Second operand 3 states. [2020-12-22 03:12:25,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:12:25,245 INFO L93 Difference]: Finished difference Result 24489 states and 37137 transitions. [2020-12-22 03:12:25,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:12:25,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 03:12:25,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:12:25,289 INFO L225 Difference]: With dead ends: 24489 [2020-12-22 03:12:25,289 INFO L226 Difference]: Without dead ends: 16277 [2020-12-22 03:12:25,303 INFO L677 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 [2020-12-22 03:12:25,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16277 states. [2020-12-22 03:12:25,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16277 to 14963. [2020-12-22 03:12:25,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14963 states. [2020-12-22 03:12:25,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14963 states to 14963 states and 23290 transitions. [2020-12-22 03:12:25,599 INFO L78 Accepts]: Start accepts. Automaton has 14963 states and 23290 transitions. Word has length 23 [2020-12-22 03:12:25,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:12:25,599 INFO L481 AbstractCegarLoop]: Abstraction has 14963 states and 23290 transitions. [2020-12-22 03:12:25,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:12:25,600 INFO L276 IsEmpty]: Start isEmpty. Operand 14963 states and 23290 transitions. [2020-12-22 03:12:25,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 03:12:25,602 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:12:25,602 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:12:25,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 03:12:25,602 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:12:25,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:12:25,603 INFO L82 PathProgramCache]: Analyzing trace with hash -2046252058, now seen corresponding path program 1 times [2020-12-22 03:12:25,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:12:25,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349386362] [2020-12-22 03:12:25,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:12:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:12:25,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:12:25,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349386362] [2020-12-22 03:12:25,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:12:25,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:12:25,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265734710] [2020-12-22 03:12:25,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:12:25,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:12:25,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:12:25,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:12:25,729 INFO L87 Difference]: Start difference. First operand 14963 states and 23290 transitions. Second operand 3 states. [2020-12-22 03:12:35,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:12:35,241 INFO L93 Difference]: Finished difference Result 37763 states and 58560 transitions. [2020-12-22 03:12:35,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:12:35,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-22 03:12:35,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:12:35,308 INFO L225 Difference]: With dead ends: 37763 [2020-12-22 03:12:35,309 INFO L226 Difference]: Without dead ends: 22521 [2020-12-22 03:12:35,334 INFO L677 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 [2020-12-22 03:12:35,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22521 states. [2020-12-22 03:12:35,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22521 to 21281. [2020-12-22 03:12:35,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21281 states. [2020-12-22 03:12:35,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21281 states to 21281 states and 33024 transitions. [2020-12-22 03:12:35,893 INFO L78 Accepts]: Start accepts. Automaton has 21281 states and 33024 transitions. Word has length 25 [2020-12-22 03:12:35,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:12:35,893 INFO L481 AbstractCegarLoop]: Abstraction has 21281 states and 33024 transitions. [2020-12-22 03:12:35,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:12:35,894 INFO L276 IsEmpty]: Start isEmpty. Operand 21281 states and 33024 transitions. [2020-12-22 03:12:35,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 03:12:35,899 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:12:35,900 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 03:12:35,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 03:12:35,900 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:12:35,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:12:35,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1701022621, now seen corresponding path program 1 times [2020-12-22 03:12:35,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:12:35,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502498449] [2020-12-22 03:12:35,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:12:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:12:36,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:12:36,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502498449] [2020-12-22 03:12:36,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:12:36,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:12:36,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793929854] [2020-12-22 03:12:36,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:12:36,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:12:36,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:12:36,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:12:36,040 INFO L87 Difference]: Start difference. First operand 21281 states and 33024 transitions. Second operand 3 states. [2020-12-22 03:12:46,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:12:46,270 INFO L93 Difference]: Finished difference Result 63807 states and 99006 transitions. [2020-12-22 03:12:46,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:12:46,270 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-22 03:12:46,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:12:46,455 INFO L225 Difference]: With dead ends: 63807 [2020-12-22 03:12:46,455 INFO L226 Difference]: Without dead ends: 42529 [2020-12-22 03:12:46,487 INFO L677 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 [2020-12-22 03:12:46,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42529 states. [2020-12-22 03:12:47,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42529 to 40445. [2020-12-22 03:12:47,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40445 states. [2020-12-22 03:12:47,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40445 states to 40445 states and 63685 transitions. [2020-12-22 03:12:47,424 INFO L78 Accepts]: Start accepts. Automaton has 40445 states and 63685 transitions. Word has length 30 [2020-12-22 03:12:47,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:12:47,424 INFO L481 AbstractCegarLoop]: Abstraction has 40445 states and 63685 transitions. [2020-12-22 03:12:47,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:12:47,426 INFO L276 IsEmpty]: Start isEmpty. Operand 40445 states and 63685 transitions. [2020-12-22 03:12:47,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 03:12:47,429 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:12:47,429 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 03:12:47,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 03:12:47,430 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:12:47,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:12:47,430 INFO L82 PathProgramCache]: Analyzing trace with hash 561792454, now seen corresponding path program 1 times [2020-12-22 03:12:47,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:12:47,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773770526] [2020-12-22 03:12:47,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:12:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:12:47,519 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 03:12:47,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773770526] [2020-12-22 03:12:47,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:12:47,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:12:47,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651042202] [2020-12-22 03:12:47,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:12:47,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:12:47,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:12:47,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:12:47,522 INFO L87 Difference]: Start difference. First operand 40445 states and 63685 transitions. Second operand 3 states. [2020-12-22 03:12:50,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:12:50,046 INFO L93 Difference]: Finished difference Result 79526 states and 125194 transitions. [2020-12-22 03:12:50,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:12:50,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-12-22 03:12:50,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:12:50,136 INFO L225 Difference]: With dead ends: 79526 [2020-12-22 03:12:50,137 INFO L226 Difference]: Without dead ends: 39084 [2020-12-22 03:12:50,178 INFO L677 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 [2020-12-22 03:12:50,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39084 states. [2020-12-22 03:12:51,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39084 to 39082. [2020-12-22 03:12:51,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39082 states. [2020-12-22 03:12:51,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39082 states to 39082 states and 61493 transitions. [2020-12-22 03:12:51,416 INFO L78 Accepts]: Start accepts. Automaton has 39082 states and 61493 transitions. Word has length 36 [2020-12-22 03:12:51,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:12:51,416 INFO L481 AbstractCegarLoop]: Abstraction has 39082 states and 61493 transitions. [2020-12-22 03:12:51,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:12:51,416 INFO L276 IsEmpty]: Start isEmpty. Operand 39082 states and 61493 transitions. [2020-12-22 03:12:51,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 03:12:51,417 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:12:51,417 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 03:12:51,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 03:12:51,417 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:12:51,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:12:51,418 INFO L82 PathProgramCache]: Analyzing trace with hash -421428809, now seen corresponding path program 1 times [2020-12-22 03:12:51,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:12:51,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238972218] [2020-12-22 03:12:51,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:12:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:12:51,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:12:51,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238972218] [2020-12-22 03:12:51,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:12:51,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:12:51,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951499528] [2020-12-22 03:12:51,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:12:51,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:12:51,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:12:51,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:12:51,892 INFO L87 Difference]: Start difference. First operand 39082 states and 61493 transitions. Second operand 3 states. [2020-12-22 03:12:57,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:12:57,640 INFO L93 Difference]: Finished difference Result 104907 states and 165289 transitions. [2020-12-22 03:12:57,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:12:57,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-22 03:12:57,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:12:57,744 INFO L225 Difference]: With dead ends: 104907 [2020-12-22 03:12:57,745 INFO L226 Difference]: Without dead ends: 65994 [2020-12-22 03:12:57,786 INFO L677 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 [2020-12-22 03:12:57,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65994 states. [2020-12-22 03:12:58,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65994 to 64334. [2020-12-22 03:12:58,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64334 states. [2020-12-22 03:12:58,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64334 states to 64334 states and 101926 transitions. [2020-12-22 03:12:58,891 INFO L78 Accepts]: Start accepts. Automaton has 64334 states and 101926 transitions. Word has length 39 [2020-12-22 03:12:58,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:12:58,892 INFO L481 AbstractCegarLoop]: Abstraction has 64334 states and 101926 transitions. [2020-12-22 03:12:58,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:12:58,892 INFO L276 IsEmpty]: Start isEmpty. Operand 64334 states and 101926 transitions. [2020-12-22 03:12:58,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 03:12:58,893 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:12:58,893 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 03:12:58,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 03:12:58,893 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:12:58,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:12:58,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1116669619, now seen corresponding path program 1 times [2020-12-22 03:12:58,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:12:58,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240802288] [2020-12-22 03:12:58,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:12:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:12:59,024 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 03:12:59,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240802288] [2020-12-22 03:12:59,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:12:59,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:12:59,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094809297] [2020-12-22 03:12:59,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:12:59,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:12:59,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:12:59,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:12:59,029 INFO L87 Difference]: Start difference. First operand 64334 states and 101926 transitions. Second operand 3 states. [2020-12-22 03:13:01,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:13:01,796 INFO L93 Difference]: Finished difference Result 128505 states and 203588 transitions. [2020-12-22 03:13:01,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:13:01,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-12-22 03:13:01,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:13:01,894 INFO L225 Difference]: With dead ends: 128505 [2020-12-22 03:13:01,894 INFO L226 Difference]: Without dead ends: 64386 [2020-12-22 03:13:01,944 INFO L677 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 [2020-12-22 03:13:02,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64386 states. [2020-12-22 03:13:03,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64386 to 64384. [2020-12-22 03:13:03,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64384 states. [2020-12-22 03:13:03,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64384 states to 64384 states and 101976 transitions. [2020-12-22 03:13:03,303 INFO L78 Accepts]: Start accepts. Automaton has 64384 states and 101976 transitions. Word has length 43 [2020-12-22 03:13:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:13:03,304 INFO L481 AbstractCegarLoop]: Abstraction has 64384 states and 101976 transitions. [2020-12-22 03:13:03,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:13:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand 64384 states and 101976 transitions. [2020-12-22 03:13:03,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 03:13:03,305 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:13:03,305 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 03:13:03,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 03:13:03,305 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:13:03,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:13:03,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1299656225, now seen corresponding path program 1 times [2020-12-22 03:13:03,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:13:03,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638291267] [2020-12-22 03:13:03,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:13:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:13:03,454 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:13:03,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638291267] [2020-12-22 03:13:03,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:13:03,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 03:13:03,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182515678] [2020-12-22 03:13:03,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 03:13:03,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:13:03,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 03:13:03,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 03:13:03,456 INFO L87 Difference]: Start difference. First operand 64384 states and 101976 transitions. Second operand 4 states. [2020-12-22 03:13:13,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:13:13,416 INFO L93 Difference]: Finished difference Result 123103 states and 194868 transitions. [2020-12-22 03:13:13,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 03:13:13,417 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 03:13:13,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:13:13,505 INFO L225 Difference]: With dead ends: 123103 [2020-12-22 03:13:13,505 INFO L226 Difference]: Without dead ends: 64644 [2020-12-22 03:13:13,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 03:13:13,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64644 states. [2020-12-22 03:13:14,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64644 to 62168. [2020-12-22 03:13:14,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62168 states. [2020-12-22 03:13:14,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62168 states to 62168 states and 97131 transitions. [2020-12-22 03:13:14,686 INFO L78 Accepts]: Start accepts. Automaton has 62168 states and 97131 transitions. Word has length 52 [2020-12-22 03:13:14,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:13:14,686 INFO L481 AbstractCegarLoop]: Abstraction has 62168 states and 97131 transitions. [2020-12-22 03:13:14,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 03:13:14,686 INFO L276 IsEmpty]: Start isEmpty. Operand 62168 states and 97131 transitions. [2020-12-22 03:13:14,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 03:13:14,687 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:13:14,688 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 03:13:14,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 03:13:14,688 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:13:14,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:13:14,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1610447069, now seen corresponding path program 1 times [2020-12-22 03:13:14,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:13:14,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461420554] [2020-12-22 03:13:14,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:13:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:13:14,774 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 03:13:14,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461420554] [2020-12-22 03:13:14,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:13:14,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:13:14,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343470324] [2020-12-22 03:13:14,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:13:14,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:13:14,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:13:14,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:13:14,776 INFO L87 Difference]: Start difference. First operand 62168 states and 97131 transitions. Second operand 3 states. [2020-12-22 03:13:17,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:13:17,137 INFO L93 Difference]: Finished difference Result 124183 states and 194018 transitions. [2020-12-22 03:13:17,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:13:17,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-22 03:13:17,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:13:17,220 INFO L225 Difference]: With dead ends: 124183 [2020-12-22 03:13:17,221 INFO L226 Difference]: Without dead ends: 62230 [2020-12-22 03:13:17,256 INFO L677 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 [2020-12-22 03:13:17,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62230 states. [2020-12-22 03:13:18,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62230 to 62228. [2020-12-22 03:13:18,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62228 states. [2020-12-22 03:13:18,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62228 states to 62228 states and 97191 transitions. [2020-12-22 03:13:18,626 INFO L78 Accepts]: Start accepts. Automaton has 62228 states and 97191 transitions. Word has length 53 [2020-12-22 03:13:18,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:13:18,626 INFO L481 AbstractCegarLoop]: Abstraction has 62228 states and 97191 transitions. [2020-12-22 03:13:18,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:13:18,626 INFO L276 IsEmpty]: Start isEmpty. Operand 62228 states and 97191 transitions. [2020-12-22 03:13:18,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 03:13:18,627 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:13:18,628 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 03:13:18,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 03:13:18,628 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:13:18,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:13:18,628 INFO L82 PathProgramCache]: Analyzing trace with hash -2089054241, now seen corresponding path program 1 times [2020-12-22 03:13:18,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:13:18,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029992509] [2020-12-22 03:13:18,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:13:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:13:18,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 03:13:18,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029992509] [2020-12-22 03:13:18,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:13:18,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:13:18,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127465110] [2020-12-22 03:13:18,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:13:18,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:13:18,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:13:18,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:13:18,741 INFO L87 Difference]: Start difference. First operand 62228 states and 97191 transitions. Second operand 3 states. [2020-12-22 03:13:25,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:13:25,094 INFO L93 Difference]: Finished difference Result 113440 states and 176621 transitions. [2020-12-22 03:13:25,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:13:25,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-12-22 03:13:25,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:13:25,343 INFO L225 Difference]: With dead ends: 113440 [2020-12-22 03:13:25,343 INFO L226 Difference]: Without dead ends: 63214 [2020-12-22 03:13:25,382 INFO L677 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 [2020-12-22 03:13:25,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63214 states. [2020-12-22 03:13:26,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63214 to 61972. [2020-12-22 03:13:26,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61972 states. [2020-12-22 03:13:26,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61972 states to 61972 states and 96167 transitions. [2020-12-22 03:13:26,262 INFO L78 Accepts]: Start accepts. Automaton has 61972 states and 96167 transitions. Word has length 58 [2020-12-22 03:13:26,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:13:26,262 INFO L481 AbstractCegarLoop]: Abstraction has 61972 states and 96167 transitions. [2020-12-22 03:13:26,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:13:26,263 INFO L276 IsEmpty]: Start isEmpty. Operand 61972 states and 96167 transitions. [2020-12-22 03:13:26,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 03:13:26,263 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:13:26,264 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 03:13:26,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 03:13:26,264 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:13:26,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:13:26,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1311774324, now seen corresponding path program 1 times [2020-12-22 03:13:26,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:13:26,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185810822] [2020-12-22 03:13:26,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:13:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:13:26,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:13:26,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185810822] [2020-12-22 03:13:26,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:13:26,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:13:26,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206172436] [2020-12-22 03:13:26,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:13:26,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:13:26,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:13:26,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:13:26,368 INFO L87 Difference]: Start difference. First operand 61972 states and 96167 transitions. Second operand 3 states. [2020-12-22 03:13:34,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:13:34,412 INFO L93 Difference]: Finished difference Result 126061 states and 194484 transitions. [2020-12-22 03:13:34,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:13:34,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 03:13:34,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:13:34,499 INFO L225 Difference]: With dead ends: 126061 [2020-12-22 03:13:34,499 INFO L226 Difference]: Without dead ends: 64264 [2020-12-22 03:13:34,537 INFO L677 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 [2020-12-22 03:13:34,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64264 states. [2020-12-22 03:13:35,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64264 to 61650. [2020-12-22 03:13:35,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61650 states. [2020-12-22 03:13:35,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61650 states to 61650 states and 95449 transitions. [2020-12-22 03:13:35,785 INFO L78 Accepts]: Start accepts. Automaton has 61650 states and 95449 transitions. Word has length 64 [2020-12-22 03:13:35,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:13:35,786 INFO L481 AbstractCegarLoop]: Abstraction has 61650 states and 95449 transitions. [2020-12-22 03:13:35,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:13:35,786 INFO L276 IsEmpty]: Start isEmpty. Operand 61650 states and 95449 transitions. [2020-12-22 03:13:35,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 03:13:35,787 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:13:35,787 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 03:13:35,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 03:13:35,787 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:13:35,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:13:35,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1468274043, now seen corresponding path program 1 times [2020-12-22 03:13:35,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:13:35,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604042242] [2020-12-22 03:13:35,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:13:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:13:35,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:13:35,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604042242] [2020-12-22 03:13:35,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:13:35,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:13:35,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022221146] [2020-12-22 03:13:35,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:13:35,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:13:35,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:13:35,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:13:35,913 INFO L87 Difference]: Start difference. First operand 61650 states and 95449 transitions. Second operand 3 states. [2020-12-22 03:13:45,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:13:45,344 INFO L93 Difference]: Finished difference Result 100708 states and 154682 transitions. [2020-12-22 03:13:45,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:13:45,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-22 03:13:45,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:13:45,441 INFO L225 Difference]: With dead ends: 100708 [2020-12-22 03:13:45,442 INFO L226 Difference]: Without dead ends: 74876 [2020-12-22 03:13:45,469 INFO L677 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 [2020-12-22 03:13:45,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74876 states. [2020-12-22 03:13:46,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74876 to 73014. [2020-12-22 03:13:46,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73014 states. [2020-12-22 03:13:46,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73014 states to 73014 states and 113174 transitions. [2020-12-22 03:13:46,706 INFO L78 Accepts]: Start accepts. Automaton has 73014 states and 113174 transitions. Word has length 74 [2020-12-22 03:13:46,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:13:46,706 INFO L481 AbstractCegarLoop]: Abstraction has 73014 states and 113174 transitions. [2020-12-22 03:13:46,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:13:46,706 INFO L276 IsEmpty]: Start isEmpty. Operand 73014 states and 113174 transitions. [2020-12-22 03:13:46,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 03:13:46,708 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:13:46,709 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 03:13:46,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 03:13:46,709 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:13:46,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:13:46,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1736777499, now seen corresponding path program 1 times [2020-12-22 03:13:46,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:13:46,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511921943] [2020-12-22 03:13:46,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:13:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:13:46,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 03:13:46,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511921943] [2020-12-22 03:13:46,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:13:46,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:13:46,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832724707] [2020-12-22 03:13:46,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:13:46,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:13:46,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:13:46,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:13:46,817 INFO L87 Difference]: Start difference. First operand 73014 states and 113174 transitions. Second operand 3 states. [2020-12-22 03:13:49,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:13:49,382 INFO L93 Difference]: Finished difference Result 141047 states and 218637 transitions. [2020-12-22 03:13:49,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:13:49,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 03:13:49,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:13:49,501 INFO L225 Difference]: With dead ends: 141047 [2020-12-22 03:13:49,501 INFO L226 Difference]: Without dead ends: 68433 [2020-12-22 03:13:49,544 INFO L677 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 [2020-12-22 03:13:49,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68433 states. [2020-12-22 03:13:50,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68433 to 68431. [2020-12-22 03:13:50,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68431 states. [2020-12-22 03:13:50,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68431 states to 68431 states and 106021 transitions. [2020-12-22 03:13:50,475 INFO L78 Accepts]: Start accepts. Automaton has 68431 states and 106021 transitions. Word has length 81 [2020-12-22 03:13:50,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:13:50,475 INFO L481 AbstractCegarLoop]: Abstraction has 68431 states and 106021 transitions. [2020-12-22 03:13:50,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:13:50,475 INFO L276 IsEmpty]: Start isEmpty. Operand 68431 states and 106021 transitions. [2020-12-22 03:13:50,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 03:13:50,476 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:13:50,477 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 03:13:50,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 03:13:50,477 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:13:50,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:13:50,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1749163296, now seen corresponding path program 1 times [2020-12-22 03:13:50,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:13:50,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800044987] [2020-12-22 03:13:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:13:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:13:50,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 03:13:50,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800044987] [2020-12-22 03:13:50,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:13:50,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:13:50,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398951338] [2020-12-22 03:13:50,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:13:50,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:13:50,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:13:50,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:13:50,569 INFO L87 Difference]: Start difference. First operand 68431 states and 106021 transitions. Second operand 3 states. [2020-12-22 03:13:53,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:13:53,372 INFO L93 Difference]: Finished difference Result 136168 states and 210970 transitions. [2020-12-22 03:13:53,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:13:53,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-22 03:13:53,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:13:53,466 INFO L225 Difference]: With dead ends: 136168 [2020-12-22 03:13:53,466 INFO L226 Difference]: Without dead ends: 68529 [2020-12-22 03:13:53,498 INFO L677 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 [2020-12-22 03:13:53,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68529 states. [2020-12-22 03:13:54,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68529 to 68527. [2020-12-22 03:13:54,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68527 states. [2020-12-22 03:13:54,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68527 states to 68527 states and 106117 transitions. [2020-12-22 03:13:54,430 INFO L78 Accepts]: Start accepts. Automaton has 68527 states and 106117 transitions. Word has length 84 [2020-12-22 03:13:54,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:13:54,430 INFO L481 AbstractCegarLoop]: Abstraction has 68527 states and 106117 transitions. [2020-12-22 03:13:54,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:13:54,430 INFO L276 IsEmpty]: Start isEmpty. Operand 68527 states and 106117 transitions. [2020-12-22 03:13:54,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 03:13:54,432 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:13:54,433 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 03:13:54,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 03:13:54,433 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:13:54,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:13:54,433 INFO L82 PathProgramCache]: Analyzing trace with hash 668432337, now seen corresponding path program 1 times [2020-12-22 03:13:54,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:13:54,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739580065] [2020-12-22 03:13:54,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:13:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:13:54,582 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:13:54,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739580065] [2020-12-22 03:13:54,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:13:54,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 03:13:54,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815624088] [2020-12-22 03:13:54,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 03:13:54,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:13:54,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 03:13:54,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 03:13:54,585 INFO L87 Difference]: Start difference. First operand 68527 states and 106117 transitions. Second operand 4 states. [2020-12-22 03:14:04,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:14:04,703 INFO L93 Difference]: Finished difference Result 93509 states and 143768 transitions. [2020-12-22 03:14:04,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 03:14:04,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-12-22 03:14:04,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:14:04,761 INFO L225 Difference]: With dead ends: 93509 [2020-12-22 03:14:04,761 INFO L226 Difference]: Without dead ends: 47080 [2020-12-22 03:14:04,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 03:14:04,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47080 states. [2020-12-22 03:14:05,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47080 to 45905. [2020-12-22 03:14:05,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45905 states. [2020-12-22 03:14:05,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45905 states to 45905 states and 70306 transitions. [2020-12-22 03:14:05,578 INFO L78 Accepts]: Start accepts. Automaton has 45905 states and 70306 transitions. Word has length 88 [2020-12-22 03:14:05,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:14:05,578 INFO L481 AbstractCegarLoop]: Abstraction has 45905 states and 70306 transitions. [2020-12-22 03:14:05,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 03:14:05,578 INFO L276 IsEmpty]: Start isEmpty. Operand 45905 states and 70306 transitions. [2020-12-22 03:14:05,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 03:14:05,593 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:14:05,594 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 03:14:05,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 03:14:05,594 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:14:05,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:14:05,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1526878815, now seen corresponding path program 1 times [2020-12-22 03:14:05,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:14:05,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405444742] [2020-12-22 03:14:05,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:14:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:14:05,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:14:05,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405444742] [2020-12-22 03:14:05,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:14:05,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 03:14:05,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125946420] [2020-12-22 03:14:05,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 03:14:05,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:14:05,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 03:14:05,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 03:14:05,740 INFO L87 Difference]: Start difference. First operand 45905 states and 70306 transitions. Second operand 4 states. [2020-12-22 03:14:15,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:14:15,716 INFO L93 Difference]: Finished difference Result 59447 states and 89959 transitions. [2020-12-22 03:14:15,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 03:14:15,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-12-22 03:14:15,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:14:15,759 INFO L225 Difference]: With dead ends: 59447 [2020-12-22 03:14:15,759 INFO L226 Difference]: Without dead ends: 35780 [2020-12-22 03:14:15,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 03:14:15,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35780 states. [2020-12-22 03:14:16,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35780 to 34605. [2020-12-22 03:14:16,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34605 states. [2020-12-22 03:14:16,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34605 states to 34605 states and 52784 transitions. [2020-12-22 03:14:16,145 INFO L78 Accepts]: Start accepts. Automaton has 34605 states and 52784 transitions. Word has length 90 [2020-12-22 03:14:16,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:14:16,145 INFO L481 AbstractCegarLoop]: Abstraction has 34605 states and 52784 transitions. [2020-12-22 03:14:16,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 03:14:16,145 INFO L276 IsEmpty]: Start isEmpty. Operand 34605 states and 52784 transitions. [2020-12-22 03:14:16,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 03:14:16,147 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:14:16,148 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 03:14:16,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 03:14:16,148 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:14:16,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:14:16,149 INFO L82 PathProgramCache]: Analyzing trace with hash -447066393, now seen corresponding path program 1 times [2020-12-22 03:14:16,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:14:16,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688907927] [2020-12-22 03:14:16,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:14:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:14:16,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:14:16,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688907927] [2020-12-22 03:14:16,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:14:16,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:14:16,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909707729] [2020-12-22 03:14:16,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:14:16,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:14:16,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:14:16,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:14:16,451 INFO L87 Difference]: Start difference. First operand 34605 states and 52784 transitions. Second operand 3 states. [2020-12-22 03:14:18,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:14:18,496 INFO L93 Difference]: Finished difference Result 35774 states and 54507 transitions. [2020-12-22 03:14:18,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:14:18,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-22 03:14:18,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:14:18,539 INFO L225 Difference]: With dead ends: 35774 [2020-12-22 03:14:18,539 INFO L226 Difference]: Without dead ends: 35772 [2020-12-22 03:14:18,546 INFO L677 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 [2020-12-22 03:14:18,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35772 states. [2020-12-22 03:14:18,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35772 to 35770. [2020-12-22 03:14:18,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35770 states. [2020-12-22 03:14:18,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35770 states to 35770 states and 54493 transitions. [2020-12-22 03:14:18,973 INFO L78 Accepts]: Start accepts. Automaton has 35770 states and 54493 transitions. Word has length 98 [2020-12-22 03:14:18,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:14:18,974 INFO L481 AbstractCegarLoop]: Abstraction has 35770 states and 54493 transitions. [2020-12-22 03:14:18,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:14:18,974 INFO L276 IsEmpty]: Start isEmpty. Operand 35770 states and 54493 transitions. [2020-12-22 03:14:18,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 03:14:18,976 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:14:18,976 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 03:14:18,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 03:14:18,977 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:14:18,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:14:18,977 INFO L82 PathProgramCache]: Analyzing trace with hash 42027815, now seen corresponding path program 1 times [2020-12-22 03:14:18,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:14:18,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005470958] [2020-12-22 03:14:18,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:14:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:14:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:14:19,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005470958] [2020-12-22 03:14:19,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:14:19,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:14:19,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898096258] [2020-12-22 03:14:19,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:14:19,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:14:19,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:14:19,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:14:19,062 INFO L87 Difference]: Start difference. First operand 35770 states and 54493 transitions. Second operand 3 states. [2020-12-22 03:14:21,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:14:21,644 INFO L93 Difference]: Finished difference Result 60064 states and 91308 transitions. [2020-12-22 03:14:21,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:14:21,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-12-22 03:14:21,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:14:21,686 INFO L225 Difference]: With dead ends: 60064 [2020-12-22 03:14:21,686 INFO L226 Difference]: Without dead ends: 35466 [2020-12-22 03:14:21,701 INFO L677 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 [2020-12-22 03:14:21,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35466 states. [2020-12-22 03:14:22,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35466 to 35466. [2020-12-22 03:14:22,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35466 states. [2020-12-22 03:14:22,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35466 states to 35466 states and 53731 transitions. [2020-12-22 03:14:22,102 INFO L78 Accepts]: Start accepts. Automaton has 35466 states and 53731 transitions. Word has length 99 [2020-12-22 03:14:22,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:14:22,102 INFO L481 AbstractCegarLoop]: Abstraction has 35466 states and 53731 transitions. [2020-12-22 03:14:22,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:14:22,102 INFO L276 IsEmpty]: Start isEmpty. Operand 35466 states and 53731 transitions. [2020-12-22 03:14:22,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 03:14:22,105 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:14:22,105 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:14:22,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 03:14:22,105 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:14:22,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:14:22,106 INFO L82 PathProgramCache]: Analyzing trace with hash -930949646, now seen corresponding path program 1 times [2020-12-22 03:14:22,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:14:22,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032568546] [2020-12-22 03:14:22,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:14:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:14:22,421 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 03:14:22,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032568546] [2020-12-22 03:14:22,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:14:22,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:14:22,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602039785] [2020-12-22 03:14:22,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:14:22,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:14:22,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:14:22,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:14:22,425 INFO L87 Difference]: Start difference. First operand 35466 states and 53731 transitions. Second operand 3 states. [2020-12-22 03:14:23,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:14:23,911 INFO L93 Difference]: Finished difference Result 59167 states and 89309 transitions. [2020-12-22 03:14:23,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:14:23,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 114 [2020-12-22 03:14:23,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:14:23,948 INFO L225 Difference]: With dead ends: 59167 [2020-12-22 03:14:23,948 INFO L226 Difference]: Without dead ends: 25646 [2020-12-22 03:14:23,971 INFO L677 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 [2020-12-22 03:14:23,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25646 states. [2020-12-22 03:14:24,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25646 to 25644. [2020-12-22 03:14:24,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25644 states. [2020-12-22 03:14:24,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25644 states to 25644 states and 38423 transitions. [2020-12-22 03:14:24,451 INFO L78 Accepts]: Start accepts. Automaton has 25644 states and 38423 transitions. Word has length 114 [2020-12-22 03:14:24,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:14:24,452 INFO L481 AbstractCegarLoop]: Abstraction has 25644 states and 38423 transitions. [2020-12-22 03:14:24,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:14:24,452 INFO L276 IsEmpty]: Start isEmpty. Operand 25644 states and 38423 transitions. [2020-12-22 03:14:24,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 03:14:24,454 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:14:24,454 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:14:24,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 03:14:24,454 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:14:24,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:14:24,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1870082462, now seen corresponding path program 1 times [2020-12-22 03:14:24,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:14:24,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351100558] [2020-12-22 03:14:24,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:14:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:14:24,611 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-12-22 03:14:24,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351100558] [2020-12-22 03:14:24,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:14:24,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:14:24,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365420256] [2020-12-22 03:14:24,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:14:24,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:14:24,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:14:24,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:14:24,615 INFO L87 Difference]: Start difference. First operand 25644 states and 38423 transitions. Second operand 3 states. [2020-12-22 03:14:31,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:14:31,765 INFO L93 Difference]: Finished difference Result 33552 states and 49403 transitions. [2020-12-22 03:14:31,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:14:31,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2020-12-22 03:14:31,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:14:31,796 INFO L225 Difference]: With dead ends: 33552 [2020-12-22 03:14:31,796 INFO L226 Difference]: Without dead ends: 26563 [2020-12-22 03:14:31,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:14:31,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26563 states. [2020-12-22 03:14:32,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26563 to 19329. [2020-12-22 03:14:32,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19329 states. [2020-12-22 03:14:32,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19329 states to 19329 states and 28681 transitions. [2020-12-22 03:14:32,040 INFO L78 Accepts]: Start accepts. Automaton has 19329 states and 28681 transitions. Word has length 118 [2020-12-22 03:14:32,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:14:32,040 INFO L481 AbstractCegarLoop]: Abstraction has 19329 states and 28681 transitions. [2020-12-22 03:14:32,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:14:32,040 INFO L276 IsEmpty]: Start isEmpty. Operand 19329 states and 28681 transitions. [2020-12-22 03:14:32,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-22 03:14:32,042 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:14:32,043 INFO L422 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:14:32,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 03:14:32,043 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:14:32,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:14:32,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1991972653, now seen corresponding path program 1 times [2020-12-22 03:14:32,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:14:32,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833511764] [2020-12-22 03:14:32,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:14:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:14:32,279 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 03:14:32,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833511764] [2020-12-22 03:14:32,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:14:32,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:14:32,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852645456] [2020-12-22 03:14:32,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:14:32,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:14:32,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:14:32,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:14:32,285 INFO L87 Difference]: Start difference. First operand 19329 states and 28681 transitions. Second operand 3 states. [2020-12-22 03:14:33,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:14:33,618 INFO L93 Difference]: Finished difference Result 35712 states and 53072 transitions. [2020-12-22 03:14:33,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:14:33,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 136 [2020-12-22 03:14:33,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:14:33,640 INFO L225 Difference]: With dead ends: 35712 [2020-12-22 03:14:33,640 INFO L226 Difference]: Without dead ends: 17728 [2020-12-22 03:14:33,655 INFO L677 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 [2020-12-22 03:14:33,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17728 states. [2020-12-22 03:14:33,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17728 to 17726. [2020-12-22 03:14:33,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17726 states. [2020-12-22 03:14:33,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17726 states to 17726 states and 26301 transitions. [2020-12-22 03:14:33,987 INFO L78 Accepts]: Start accepts. Automaton has 17726 states and 26301 transitions. Word has length 136 [2020-12-22 03:14:33,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:14:33,987 INFO L481 AbstractCegarLoop]: Abstraction has 17726 states and 26301 transitions. [2020-12-22 03:14:33,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:14:33,987 INFO L276 IsEmpty]: Start isEmpty. Operand 17726 states and 26301 transitions. [2020-12-22 03:14:33,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 03:14:33,990 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:14:33,990 INFO L422 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:14:33,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 03:14:33,991 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:14:33,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:14:33,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1587573456, now seen corresponding path program 1 times [2020-12-22 03:14:33,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:14:33,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866226717] [2020-12-22 03:14:33,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:14:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:14:34,117 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 03:14:34,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866226717] [2020-12-22 03:14:34,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:14:34,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:14:34,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562009116] [2020-12-22 03:14:34,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:14:34,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:14:34,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:14:34,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:14:34,119 INFO L87 Difference]: Start difference. First operand 17726 states and 26301 transitions. Second operand 3 states. [2020-12-22 03:14:35,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:14:35,526 INFO L93 Difference]: Finished difference Result 28900 states and 42828 transitions. [2020-12-22 03:14:35,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:14:35,527 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-12-22 03:14:35,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:14:35,541 INFO L225 Difference]: With dead ends: 28900 [2020-12-22 03:14:35,542 INFO L226 Difference]: Without dead ends: 12906 [2020-12-22 03:14:35,550 INFO L677 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 [2020-12-22 03:14:35,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12906 states. [2020-12-22 03:14:35,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12906 to 12904. [2020-12-22 03:14:35,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12904 states. [2020-12-22 03:14:35,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12904 states to 12904 states and 18994 transitions. [2020-12-22 03:14:35,701 INFO L78 Accepts]: Start accepts. Automaton has 12904 states and 18994 transitions. Word has length 138 [2020-12-22 03:14:35,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:14:35,702 INFO L481 AbstractCegarLoop]: Abstraction has 12904 states and 18994 transitions. [2020-12-22 03:14:35,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:14:35,702 INFO L276 IsEmpty]: Start isEmpty. Operand 12904 states and 18994 transitions. [2020-12-22 03:14:35,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-22 03:14:35,704 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:14:35,704 INFO L422 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:14:35,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 03:14:35,704 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:14:35,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:14:35,705 INFO L82 PathProgramCache]: Analyzing trace with hash 119023117, now seen corresponding path program 1 times [2020-12-22 03:14:35,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:14:35,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284505059] [2020-12-22 03:14:35,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:14:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:14:35,825 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 03:14:35,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284505059] [2020-12-22 03:14:35,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:14:35,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:14:35,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953719242] [2020-12-22 03:14:35,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:14:35,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:14:35,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:14:35,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:14:35,827 INFO L87 Difference]: Start difference. First operand 12904 states and 18994 transitions. Second operand 3 states. [2020-12-22 03:14:37,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:14:37,324 INFO L93 Difference]: Finished difference Result 23250 states and 34301 transitions. [2020-12-22 03:14:37,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:14:37,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2020-12-22 03:14:37,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:14:37,337 INFO L225 Difference]: With dead ends: 23250 [2020-12-22 03:14:37,337 INFO L226 Difference]: Without dead ends: 12271 [2020-12-22 03:14:37,345 INFO L677 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 [2020-12-22 03:14:37,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12271 states. [2020-12-22 03:14:37,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12271 to 12269. [2020-12-22 03:14:37,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12269 states. [2020-12-22 03:14:37,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12269 states to 12269 states and 18044 transitions. [2020-12-22 03:14:37,470 INFO L78 Accepts]: Start accepts. Automaton has 12269 states and 18044 transitions. Word has length 144 [2020-12-22 03:14:37,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:14:37,470 INFO L481 AbstractCegarLoop]: Abstraction has 12269 states and 18044 transitions. [2020-12-22 03:14:37,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:14:37,470 INFO L276 IsEmpty]: Start isEmpty. Operand 12269 states and 18044 transitions. [2020-12-22 03:14:37,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 03:14:37,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:14:37,472 INFO L422 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:14:37,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 03:14:37,473 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:14:37,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:14:37,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1059270226, now seen corresponding path program 1 times [2020-12-22 03:14:37,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:14:37,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402947265] [2020-12-22 03:14:37,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:14:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:14:37,584 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 03:14:37,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402947265] [2020-12-22 03:14:37,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:14:37,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:14:37,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072213643] [2020-12-22 03:14:37,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:14:37,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:14:37,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:14:37,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:14:37,586 INFO L87 Difference]: Start difference. First operand 12269 states and 18044 transitions. Second operand 3 states. [2020-12-22 03:14:39,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:14:39,045 INFO L93 Difference]: Finished difference Result 22645 states and 33375 transitions. [2020-12-22 03:14:39,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:14:39,046 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-12-22 03:14:39,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:14:39,059 INFO L225 Difference]: With dead ends: 22645 [2020-12-22 03:14:39,060 INFO L226 Difference]: Without dead ends: 12301 [2020-12-22 03:14:39,070 INFO L677 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 [2020-12-22 03:14:39,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12301 states. [2020-12-22 03:14:39,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12301 to 12299. [2020-12-22 03:14:39,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12299 states. [2020-12-22 03:14:39,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12299 states to 12299 states and 18074 transitions. [2020-12-22 03:14:39,215 INFO L78 Accepts]: Start accepts. Automaton has 12299 states and 18074 transitions. Word has length 148 [2020-12-22 03:14:39,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:14:39,216 INFO L481 AbstractCegarLoop]: Abstraction has 12299 states and 18074 transitions. [2020-12-22 03:14:39,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:14:39,216 INFO L276 IsEmpty]: Start isEmpty. Operand 12299 states and 18074 transitions. [2020-12-22 03:14:39,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-12-22 03:14:39,219 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:14:39,219 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2020-12-22 03:14:39,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 03:14:39,219 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:14:39,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:14:39,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1097377653, now seen corresponding path program 1 times [2020-12-22 03:14:39,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:14:39,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900217563] [2020-12-22 03:14:39,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:14:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:14:39,352 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 03:14:39,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900217563] [2020-12-22 03:14:39,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:14:39,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:14:39,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568396292] [2020-12-22 03:14:39,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:14:39,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:14:39,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:14:39,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:14:39,354 INFO L87 Difference]: Start difference. First operand 12299 states and 18074 transitions. Second operand 3 states. [2020-12-22 03:14:40,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:14:40,482 INFO L93 Difference]: Finished difference Result 20373 states and 30015 transitions. [2020-12-22 03:14:40,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:14:40,483 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2020-12-22 03:14:40,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:14:40,493 INFO L225 Difference]: With dead ends: 20373 [2020-12-22 03:14:40,493 INFO L226 Difference]: Without dead ends: 9999 [2020-12-22 03:14:40,503 INFO L677 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 [2020-12-22 03:14:40,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9999 states. [2020-12-22 03:14:40,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9999 to 9997. [2020-12-22 03:14:40,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9997 states. [2020-12-22 03:14:40,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9997 states to 9997 states and 14676 transitions. [2020-12-22 03:14:40,612 INFO L78 Accepts]: Start accepts. Automaton has 9997 states and 14676 transitions. Word has length 178 [2020-12-22 03:14:40,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:14:40,613 INFO L481 AbstractCegarLoop]: Abstraction has 9997 states and 14676 transitions. [2020-12-22 03:14:40,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:14:40,613 INFO L276 IsEmpty]: Start isEmpty. Operand 9997 states and 14676 transitions. [2020-12-22 03:14:40,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-12-22 03:14:40,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:14:40,616 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2020-12-22 03:14:40,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 03:14:40,616 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:14:40,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:14:40,617 INFO L82 PathProgramCache]: Analyzing trace with hash -73762474, now seen corresponding path program 1 times [2020-12-22 03:14:40,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:14:40,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023182567] [2020-12-22 03:14:40,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:14:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:14:40,743 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 03:14:40,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023182567] [2020-12-22 03:14:40,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:14:40,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:14:40,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206466004] [2020-12-22 03:14:40,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:14:40,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:14:40,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:14:40,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:14:40,745 INFO L87 Difference]: Start difference. First operand 9997 states and 14676 transitions. Second operand 3 states. [2020-12-22 03:14:41,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:14:41,209 INFO L93 Difference]: Finished difference Result 10399 states and 15237 transitions. [2020-12-22 03:14:41,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:14:41,210 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2020-12-22 03:14:41,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:14:41,213 INFO L225 Difference]: With dead ends: 10399 [2020-12-22 03:14:41,213 INFO L226 Difference]: Without dead ends: 2333 [2020-12-22 03:14:41,219 INFO L677 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 [2020-12-22 03:14:41,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2333 states. [2020-12-22 03:14:41,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2333 to 2331. [2020-12-22 03:14:41,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2331 states. [2020-12-22 03:14:41,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3311 transitions. [2020-12-22 03:14:41,247 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3311 transitions. Word has length 183 [2020-12-22 03:14:41,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:14:41,247 INFO L481 AbstractCegarLoop]: Abstraction has 2331 states and 3311 transitions. [2020-12-22 03:14:41,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:14:41,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3311 transitions. [2020-12-22 03:14:41,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-12-22 03:14:41,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:14:41,250 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:14:41,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 03:14:41,251 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:14:41,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:14:41,251 INFO L82 PathProgramCache]: Analyzing trace with hash -621968245, now seen corresponding path program 1 times [2020-12-22 03:14:41,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:14:41,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954133611] [2020-12-22 03:14:41,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:14:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:14:41,394 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:14:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:14:41,510 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:14:41,832 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:14:41,833 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:14:41,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 03:14:42,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:14:42 BoogieIcfgContainer [2020-12-22 03:14:42,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:14:42,172 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:14:42,172 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:14:42,172 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:14:42,173 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:12:06" (3/4) ... [2020-12-22 03:14:42,175 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 03:14:42,447 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/psyco/psyco_net_1.c-witness.graphml [2020-12-22 03:14:42,448 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:14:42,450 INFO L168 Benchmark]: Toolchain (without parser) took 191250.15 ms. Allocated memory was 151.0 MB in the beginning and 7.0 GB in the end (delta: 6.9 GB). Free memory was 92.6 MB in the beginning and 5.6 GB in the end (delta: -5.5 GB). Peak memory consumption was 1.4 GB. Max. memory is 8.0 GB. [2020-12-22 03:14:42,450 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 151.0 MB. Free memory is still 122.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:14:42,451 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3873.88 ms. Allocated memory was 151.0 MB in the beginning and 384.8 MB in the end (delta: 233.8 MB). Free memory was 92.6 MB in the beginning and 209.2 MB in the end (delta: -116.6 MB). Peak memory consumption was 241.7 MB. Max. memory is 8.0 GB. [2020-12-22 03:14:42,451 INFO L168 Benchmark]: Boogie Procedure Inliner took 1758.50 ms. Allocated memory was 384.8 MB in the beginning and 769.7 MB in the end (delta: 384.8 MB). Free memory was 209.2 MB in the beginning and 546.3 MB in the end (delta: -337.1 MB). Peak memory consumption was 120.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:14:42,452 INFO L168 Benchmark]: Boogie Preprocessor took 2061.63 ms. Allocated memory was 769.7 MB in the beginning and 1.8 GB in the end (delta: 1.0 GB). Free memory was 546.3 MB in the beginning and 1.5 GB in the end (delta: -939.5 MB). Peak memory consumption was 127.9 MB. Max. memory is 8.0 GB. [2020-12-22 03:14:42,452 INFO L168 Benchmark]: RCFGBuilder took 27727.71 ms. Allocated memory was 1.8 GB in the beginning and 3.2 GB in the end (delta: 1.4 GB). Free memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: -1.1 GB). Peak memory consumption was 653.7 MB. Max. memory is 8.0 GB. [2020-12-22 03:14:42,453 INFO L168 Benchmark]: TraceAbstraction took 155538.32 ms. Allocated memory was 3.2 GB in the beginning and 7.0 GB in the end (delta: 3.8 GB). Free memory was 2.6 GB in the beginning and 5.6 GB in the end (delta: -3.0 GB). Peak memory consumption was 1.2 GB. Max. memory is 8.0 GB. [2020-12-22 03:14:42,453 INFO L168 Benchmark]: Witness Printer took 275.80 ms. Allocated memory is still 7.0 GB. Free memory was 5.6 GB in the beginning and 5.6 GB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 8.0 GB. [2020-12-22 03:14:42,455 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 151.0 MB. Free memory is still 122.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 3873.88 ms. Allocated memory was 151.0 MB in the beginning and 384.8 MB in the end (delta: 233.8 MB). Free memory was 92.6 MB in the beginning and 209.2 MB in the end (delta: -116.6 MB). Peak memory consumption was 241.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 1758.50 ms. Allocated memory was 384.8 MB in the beginning and 769.7 MB in the end (delta: 384.8 MB). Free memory was 209.2 MB in the beginning and 546.3 MB in the end (delta: -337.1 MB). Peak memory consumption was 120.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 2061.63 ms. Allocated memory was 769.7 MB in the beginning and 1.8 GB in the end (delta: 1.0 GB). Free memory was 546.3 MB in the beginning and 1.5 GB in the end (delta: -939.5 MB). Peak memory consumption was 127.9 MB. Max. memory is 8.0 GB. * RCFGBuilder took 27727.71 ms. Allocated memory was 1.8 GB in the beginning and 3.2 GB in the end (delta: 1.4 GB). Free memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: -1.1 GB). Peak memory consumption was 653.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 155538.32 ms. Allocated memory was 3.2 GB in the beginning and 7.0 GB in the end (delta: 3.8 GB). Free memory was 2.6 GB in the beginning and 5.6 GB in the end (delta: -3.0 GB). Peak memory consumption was 1.2 GB. Max. memory is 8.0 GB. * Witness Printer took 275.80 ms. Allocated memory is still 7.0 GB. Free memory was 5.6 GB in the beginning and 5.6 GB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 49140]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L7] int m_getInetAddress = 1; [L8] int m_getOOBInline = 2; [L9] int m_getLocalPort = 3; [L10] int m_isInputShutdown = 4; [L11] int m_setTcpNoDelay = 5; [L12] int m_isConnected = 6; [L13] int m_getKeepAlive = 7; [L14] int m_getLocalAddress = 8; [L15] int m_bind = 9; [L16] int m_getChannel = 10; [L17] int m_getSoLinger = 11; [L18] int m_getImpl = 12; [L19] int m_getTcpNoDelay = 13; [L20] int m_getSoTimeout = 14; [L21] int m_isOutputShutdown = 15; [L22] int m_postAccept = 16; [L23] int m_close = 17; [L24] int m_setOOBInline = 18; [L25] int m_getLocalSocketAddress = 19; [L26] int m_getReceiveBufferSize = 20; [L27] int m_setReuseAddress = 21; [L28] int m_getTrafficClass = 22; [L29] int m_getReuseAddress = 23; [L30] int m_createImpl = 24; [L31] int m_setCreated = 25; [L32] int m_setKeepAlive = 26; [L33] int m_getInputStream = 27; [L34] int m_shutdownOutput = 28; [L35] int m_shutdownInput = 29; [L36] int m_setPerformancePreferences = 30; [L37] int m_getPort = 31; [L38] int m_sendUrgentData = 32; [L39] int m_isClosed = 33; [L40] int m_isBound = 34; [L41] int m_setBound = 35; [L42] int m_getSendBufferSize = 36; [L43] int m_getOutputStream = 37; [L44] int m_setConnected = 38; [L45] int m_Socket = 39; [L46] int m_getRemoteSocketAddress = 40; [L47] int m_setReceiveBufferSize_1 = 41; [L48] int m_setReceiveBufferSize_2 = 42; [L49] int m_connect2_1 = 43; [L50] int m_connect2_2 = 44; [L51] int m_setSoLinger_1 = 45; [L52] int m_setSoLinger_2 = 46; [L53] int m_connect1_1 = 47; [L54] int m_connect1_2 = 48; [L55] int m_setTrafficClass_1 = 49; [L56] int m_setTrafficClass_2 = 50; [L57] int m_setSoTimeout_1 = 51; [L58] int m_setSoTimeout_2 = 52; [L59] int m_setSendBufferSize_1 = 53; [L60] int m_setSendBufferSize_2 = 54; [L61] int m_setSocketImplFactory_1 = 55; [L62] int m_setSocketImplFactory_2 = 56; VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L67] int q = 0; [L68] int method_id; [L71] int this_oldImpl = 0; [L72] int this_factory = 0; [L73] int this_shutOut = 0; [L74] int this_created = 0; [L75] int this_shutIn = 0; [L76] int this_closed = 0; [L77] int this_bound = 0; [L78] int this_impl = 1; [L79] int this_connected = 0; VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L82] COND TRUE 1 [L85] _Bool P1=__VERIFIER_nondet_int(); [L86] int P2=__VERIFIER_nondet_int(); [L87] _Bool P3=__VERIFIER_nondet_int(); [L88] _Bool P4=__VERIFIER_nondet_int(); [L89] _Bool P5=__VERIFIER_nondet_int(); [L90] _Bool P6=__VERIFIER_nondet_int(); [L91] int P7=__VERIFIER_nondet_int(); [L92] int P8=__VERIFIER_nondet_int(); [L93] int P9=__VERIFIER_nondet_int(); [L94] int P10=__VERIFIER_nondet_int(); [L95] int P11=__VERIFIER_nondet_int(); [L96] int P12=__VERIFIER_nondet_int(); [L97] int P13=__VERIFIER_nondet_int(); [L98] int P14=__VERIFIER_nondet_int(); [L99] int P15=__VERIFIER_nondet_int(); [L100] int P16=__VERIFIER_nondet_int(); [L101] _Bool P17=__VERIFIER_nondet_int(); [L102] int P18=__VERIFIER_nondet_int(); [L103] _Bool P19=__VERIFIER_nondet_int(); [L104] int P20=__VERIFIER_nondet_int(); [L105] int P21=__VERIFIER_nondet_int(); [L106] int P22=__VERIFIER_nondet_int(); [L107] int P23=__VERIFIER_nondet_int(); [L108] int P24=__VERIFIER_nondet_int(); [L109] int P25=__VERIFIER_nondet_int(); [L110] int P26=__VERIFIER_nondet_int(); [L111] int P27=__VERIFIER_nondet_int(); [L112] int P28=__VERIFIER_nondet_int(); [L113] int P29=__VERIFIER_nondet_int(); [L114] int P30=__VERIFIER_nondet_int(); [L118] COND TRUE q == 0 [L119] COND TRUE __VERIFIER_nondet_int() [L123] method_id = 39 VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L125] COND FALSE !(0) [L129] q = 2 [L131] this_factory=0 [L131] this_shutIn=0 [L131] this_connected=0 [L131] this_closed=0 [L131] this_shutOut=0 [L131] this_created=0 [L131] this_impl=1 [L131] this_bound=0 [L131] this_oldImpl=0 VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L82] COND TRUE 1 [L85] _Bool P1=__VERIFIER_nondet_int(); [L86] int P2=__VERIFIER_nondet_int(); [L87] _Bool P3=__VERIFIER_nondet_int(); [L88] _Bool P4=__VERIFIER_nondet_int(); [L89] _Bool P5=__VERIFIER_nondet_int(); [L90] _Bool P6=__VERIFIER_nondet_int(); [L91] int P7=__VERIFIER_nondet_int(); [L92] int P8=__VERIFIER_nondet_int(); [L93] int P9=__VERIFIER_nondet_int(); [L94] int P10=__VERIFIER_nondet_int(); [L95] int P11=__VERIFIER_nondet_int(); [L96] int P12=__VERIFIER_nondet_int(); [L97] int P13=__VERIFIER_nondet_int(); [L98] int P14=__VERIFIER_nondet_int(); [L99] int P15=__VERIFIER_nondet_int(); [L100] int P16=__VERIFIER_nondet_int(); [L101] _Bool P17=__VERIFIER_nondet_int(); [L102] int P18=__VERIFIER_nondet_int(); [L103] _Bool P19=__VERIFIER_nondet_int(); [L104] int P20=__VERIFIER_nondet_int(); [L105] int P21=__VERIFIER_nondet_int(); [L106] int P22=__VERIFIER_nondet_int(); [L107] int P23=__VERIFIER_nondet_int(); [L108] int P24=__VERIFIER_nondet_int(); [L109] int P25=__VERIFIER_nondet_int(); [L110] int P26=__VERIFIER_nondet_int(); [L111] int P27=__VERIFIER_nondet_int(); [L112] int P28=__VERIFIER_nondet_int(); [L113] int P29=__VERIFIER_nondet_int(); [L114] int P30=__VERIFIER_nondet_int(); [L118] COND FALSE !(q == 0) VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L138] COND FALSE !(q == 1) VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L750] COND TRUE q == 2 [L751] COND FALSE !(__VERIFIER_nondet_int()) [L767] COND FALSE !(__VERIFIER_nondet_int()) [L783] COND FALSE !(__VERIFIER_nondet_int()) [L799] COND FALSE !(__VERIFIER_nondet_int()) [L815] COND FALSE !(__VERIFIER_nondet_int()) [L831] COND FALSE !(__VERIFIER_nondet_int()) [L847] COND FALSE !(__VERIFIER_nondet_int()) [L863] COND FALSE !(__VERIFIER_nondet_int()) [L879] COND FALSE !(__VERIFIER_nondet_int()) [L895] COND FALSE !(__VERIFIER_nondet_int()) [L911] COND FALSE !(__VERIFIER_nondet_int()) [L927] COND FALSE !(__VERIFIER_nondet_int()) [L943] COND FALSE !(__VERIFIER_nondet_int()) [L959] COND FALSE !(__VERIFIER_nondet_int()) [L975] COND FALSE !(__VERIFIER_nondet_int()) [L991] COND FALSE !(__VERIFIER_nondet_int()) [L1007] COND FALSE !(__VERIFIER_nondet_int()) [L1023] COND FALSE !(__VERIFIER_nondet_int()) [L1039] COND FALSE !(__VERIFIER_nondet_int()) [L1055] COND FALSE !(__VERIFIER_nondet_int()) [L1071] COND FALSE !(__VERIFIER_nondet_int()) [L1087] COND FALSE !(__VERIFIER_nondet_int()) [L1103] COND FALSE !(__VERIFIER_nondet_int()) [L1119] COND FALSE !(__VERIFIER_nondet_int()) [L1135] COND FALSE !(__VERIFIER_nondet_int()) [L1151] COND FALSE !(__VERIFIER_nondet_int()) [L1167] COND FALSE !(__VERIFIER_nondet_int()) [L1183] COND FALSE !(__VERIFIER_nondet_int()) [L1199] COND FALSE !(__VERIFIER_nondet_int()) [L1215] COND FALSE !(__VERIFIER_nondet_int()) [L1231] COND FALSE !(__VERIFIER_nondet_int()) [L1247] COND FALSE !(__VERIFIER_nondet_int()) [L1263] COND FALSE !(__VERIFIER_nondet_int()) [L1279] COND FALSE !(__VERIFIER_nondet_int()) [L1295] COND FALSE !(__VERIFIER_nondet_int()) [L1311] COND FALSE !(__VERIFIER_nondet_int()) [L1327] COND FALSE !(__VERIFIER_nondet_int()) [L1343] COND FALSE !(__VERIFIER_nondet_int()) [L1359] COND FALSE !(__VERIFIER_nondet_int()) [L1375] COND FALSE !(__VERIFIER_nondet_int()) [L1391] COND FALSE !(__VERIFIER_nondet_int()) [L1407] COND FALSE !(__VERIFIER_nondet_int()) [L1423] COND FALSE !(__VERIFIER_nondet_int()) [L1439] COND FALSE !(__VERIFIER_nondet_int()) [L1455] COND FALSE !(__VERIFIER_nondet_int()) [L1471] COND FALSE !(__VERIFIER_nondet_int()) [L1487] COND FALSE !(__VERIFIER_nondet_int()) [L1503] COND FALSE !(__VERIFIER_nondet_int()) [L1519] COND FALSE !(__VERIFIER_nondet_int()) [L1535] COND FALSE !(__VERIFIER_nondet_int()) [L1551] COND FALSE !(__VERIFIER_nondet_int()) [L1567] COND FALSE !(__VERIFIER_nondet_int()) [L1583] COND FALSE !(__VERIFIER_nondet_int()) [L1599] COND FALSE !(__VERIFIER_nondet_int()) [L1615] COND FALSE !(__VERIFIER_nondet_int()) [L1631] COND FALSE !(__VERIFIER_nondet_int()) [L1647] COND FALSE !(__VERIFIER_nondet_int()) [L1663] COND FALSE !(__VERIFIER_nondet_int()) [L1679] COND FALSE !(__VERIFIER_nondet_int()) [L1695] COND FALSE !(__VERIFIER_nondet_int()) [L1711] COND FALSE !(__VERIFIER_nondet_int()) [L1727] COND FALSE !(__VERIFIER_nondet_int()) [L1743] COND FALSE !(__VERIFIER_nondet_int()) [L1759] COND FALSE !(__VERIFIER_nondet_int()) [L1775] COND FALSE !(__VERIFIER_nondet_int()) [L1791] COND FALSE !(__VERIFIER_nondet_int()) [L1807] COND FALSE !(__VERIFIER_nondet_int()) [L1823] COND FALSE !(__VERIFIER_nondet_int()) [L1839] COND FALSE !(__VERIFIER_nondet_int()) [L1855] COND FALSE !(__VERIFIER_nondet_int()) [L1871] COND FALSE !(__VERIFIER_nondet_int()) [L1887] COND FALSE !(__VERIFIER_nondet_int()) [L1903] COND FALSE !(__VERIFIER_nondet_int()) [L1919] COND FALSE !(__VERIFIER_nondet_int()) [L1935] COND FALSE !(__VERIFIER_nondet_int()) [L1951] COND FALSE !(__VERIFIER_nondet_int()) [L1967] COND FALSE !(__VERIFIER_nondet_int()) [L1983] COND FALSE !(__VERIFIER_nondet_int()) [L1999] COND FALSE !(__VERIFIER_nondet_int()) [L2015] COND FALSE !(__VERIFIER_nondet_int()) [L2031] COND FALSE !(__VERIFIER_nondet_int()) [L2047] COND FALSE !(__VERIFIER_nondet_int()) [L2063] COND FALSE !(__VERIFIER_nondet_int()) [L2079] COND TRUE __VERIFIER_nondet_int() [L2081] COND TRUE !(P1 != 0) [L2083] method_id = 56 VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L2085] COND FALSE !(((this_factory != 0) && !(P30 != 0))) [L2089] q = 2 [L2091] this_factory=P30 [L2091] this_shutIn=this_shutIn [L2091] this_connected=this_connected [L2091] this_closed=this_closed [L2091] this_shutOut=this_shutOut [L2091] this_created=this_created [L2091] this_impl=this_impl [L2091] this_bound=this_bound [L2091] this_oldImpl=this_oldImpl VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L82] COND TRUE 1 [L85] _Bool P1=__VERIFIER_nondet_int(); [L86] int P2=__VERIFIER_nondet_int(); [L87] _Bool P3=__VERIFIER_nondet_int(); [L88] _Bool P4=__VERIFIER_nondet_int(); [L89] _Bool P5=__VERIFIER_nondet_int(); [L90] _Bool P6=__VERIFIER_nondet_int(); [L91] int P7=__VERIFIER_nondet_int(); [L92] int P8=__VERIFIER_nondet_int(); [L93] int P9=__VERIFIER_nondet_int(); [L94] int P10=__VERIFIER_nondet_int(); [L95] int P11=__VERIFIER_nondet_int(); [L96] int P12=__VERIFIER_nondet_int(); [L97] int P13=__VERIFIER_nondet_int(); [L98] int P14=__VERIFIER_nondet_int(); [L99] int P15=__VERIFIER_nondet_int(); [L100] int P16=__VERIFIER_nondet_int(); [L101] _Bool P17=__VERIFIER_nondet_int(); [L102] int P18=__VERIFIER_nondet_int(); [L103] _Bool P19=__VERIFIER_nondet_int(); [L104] int P20=__VERIFIER_nondet_int(); [L105] int P21=__VERIFIER_nondet_int(); [L106] int P22=__VERIFIER_nondet_int(); [L107] int P23=__VERIFIER_nondet_int(); [L108] int P24=__VERIFIER_nondet_int(); [L109] int P25=__VERIFIER_nondet_int(); [L110] int P26=__VERIFIER_nondet_int(); [L111] int P27=__VERIFIER_nondet_int(); [L112] int P28=__VERIFIER_nondet_int(); [L113] int P29=__VERIFIER_nondet_int(); [L114] int P30=__VERIFIER_nondet_int(); [L118] COND FALSE !(q == 0) VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L138] COND FALSE !(q == 1) VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L750] COND TRUE q == 2 [L751] COND FALSE !(__VERIFIER_nondet_int()) [L767] COND FALSE !(__VERIFIER_nondet_int()) [L783] COND FALSE !(__VERIFIER_nondet_int()) [L799] COND FALSE !(__VERIFIER_nondet_int()) [L815] COND FALSE !(__VERIFIER_nondet_int()) [L831] COND FALSE !(__VERIFIER_nondet_int()) [L847] COND FALSE !(__VERIFIER_nondet_int()) [L863] COND FALSE !(__VERIFIER_nondet_int()) [L879] COND FALSE !(__VERIFIER_nondet_int()) [L895] COND FALSE !(__VERIFIER_nondet_int()) [L911] COND FALSE !(__VERIFIER_nondet_int()) [L927] COND FALSE !(__VERIFIER_nondet_int()) [L943] COND FALSE !(__VERIFIER_nondet_int()) [L959] COND FALSE !(__VERIFIER_nondet_int()) [L975] COND FALSE !(__VERIFIER_nondet_int()) [L991] COND FALSE !(__VERIFIER_nondet_int()) [L1007] COND FALSE !(__VERIFIER_nondet_int()) [L1023] COND FALSE !(__VERIFIER_nondet_int()) [L1039] COND FALSE !(__VERIFIER_nondet_int()) [L1055] COND FALSE !(__VERIFIER_nondet_int()) [L1071] COND FALSE !(__VERIFIER_nondet_int()) [L1087] COND FALSE !(__VERIFIER_nondet_int()) [L1103] COND FALSE !(__VERIFIER_nondet_int()) [L1119] COND FALSE !(__VERIFIER_nondet_int()) [L1135] COND FALSE !(__VERIFIER_nondet_int()) [L1151] COND FALSE !(__VERIFIER_nondet_int()) [L1167] COND FALSE !(__VERIFIER_nondet_int()) [L1183] COND FALSE !(__VERIFIER_nondet_int()) [L1199] COND FALSE !(__VERIFIER_nondet_int()) [L1215] COND FALSE !(__VERIFIER_nondet_int()) [L1231] COND FALSE !(__VERIFIER_nondet_int()) [L1247] COND FALSE !(__VERIFIER_nondet_int()) [L1263] COND FALSE !(__VERIFIER_nondet_int()) [L1279] COND FALSE !(__VERIFIER_nondet_int()) [L1295] COND FALSE !(__VERIFIER_nondet_int()) [L1311] COND FALSE !(__VERIFIER_nondet_int()) [L1327] COND FALSE !(__VERIFIER_nondet_int()) [L1343] COND FALSE !(__VERIFIER_nondet_int()) [L1359] COND FALSE !(__VERIFIER_nondet_int()) [L1375] COND FALSE !(__VERIFIER_nondet_int()) [L1391] COND FALSE !(__VERIFIER_nondet_int()) [L1407] COND FALSE !(__VERIFIER_nondet_int()) [L1423] COND FALSE !(__VERIFIER_nondet_int()) [L1439] COND FALSE !(__VERIFIER_nondet_int()) [L1455] COND FALSE !(__VERIFIER_nondet_int()) [L1471] COND FALSE !(__VERIFIER_nondet_int()) [L1487] COND FALSE !(__VERIFIER_nondet_int()) [L1503] COND FALSE !(__VERIFIER_nondet_int()) [L1519] COND FALSE !(__VERIFIER_nondet_int()) [L1535] COND FALSE !(__VERIFIER_nondet_int()) [L1551] COND FALSE !(__VERIFIER_nondet_int()) [L1567] COND FALSE !(__VERIFIER_nondet_int()) [L1583] COND FALSE !(__VERIFIER_nondet_int()) [L1599] COND FALSE !(__VERIFIER_nondet_int()) [L1615] COND FALSE !(__VERIFIER_nondet_int()) [L1631] COND FALSE !(__VERIFIER_nondet_int()) [L1647] COND FALSE !(__VERIFIER_nondet_int()) [L1663] COND FALSE !(__VERIFIER_nondet_int()) [L1679] COND FALSE !(__VERIFIER_nondet_int()) [L1695] COND FALSE !(__VERIFIER_nondet_int()) [L1711] COND FALSE !(__VERIFIER_nondet_int()) [L1727] COND FALSE !(__VERIFIER_nondet_int()) [L1743] COND FALSE !(__VERIFIER_nondet_int()) [L1759] COND FALSE !(__VERIFIER_nondet_int()) [L1775] COND FALSE !(__VERIFIER_nondet_int()) [L1791] COND FALSE !(__VERIFIER_nondet_int()) [L1807] COND FALSE !(__VERIFIER_nondet_int()) [L1823] COND FALSE !(__VERIFIER_nondet_int()) [L1839] COND FALSE !(__VERIFIER_nondet_int()) [L1855] COND FALSE !(__VERIFIER_nondet_int()) [L1871] COND FALSE !(__VERIFIER_nondet_int()) [L1887] COND FALSE !(__VERIFIER_nondet_int()) [L1903] COND FALSE !(__VERIFIER_nondet_int()) [L1919] COND FALSE !(__VERIFIER_nondet_int()) [L1935] COND FALSE !(__VERIFIER_nondet_int()) [L1951] COND FALSE !(__VERIFIER_nondet_int()) [L1967] COND FALSE !(__VERIFIER_nondet_int()) [L1983] COND FALSE !(__VERIFIER_nondet_int()) [L1999] COND FALSE !(__VERIFIER_nondet_int()) [L2015] COND FALSE !(__VERIFIER_nondet_int()) [L2031] COND FALSE !(__VERIFIER_nondet_int()) [L2047] COND FALSE !(__VERIFIER_nondet_int()) [L2063] COND TRUE __VERIFIER_nondet_int() [L2065] COND TRUE (P1 != 0) [L2067] method_id = 55 VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L2069] COND TRUE ((this_factory != 0) && (P29 != 0)) VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L49140] reach_error() VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9211 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 155.0s, OverallIterations: 30, TraceHistogramMax: 4, AutomataDifference: 131.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 328994 SDtfs, 228282 SDslu, 201767 SDs, 0 SdLazy, 60734 SolverSat, 22954 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 86.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73014occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 17.7s AutomataMinimizationTime, 29 MinimizatonAttempts, 24104 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 2437 NumberOfCodeBlocks, 2437 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 2220 ConstructedInterpolants, 0 QuantifiedInterpolants, 660101 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 29 InterpolantComputations, 29 PerfectInterpolantSequences, 292/292 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...