/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/seq-mthreaded/pals_lcr.7_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:37:56,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:37:56,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:37:56,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 07:37:57,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:37:57,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:37:57,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:37:57,026 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:37:57,082 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:37:57,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:37:57,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:37:57,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:37:57,087 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:37:57,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:37:57,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:37:57,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:37:57,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:37:57,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:37:57,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:37:57,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:37:57,089 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:37:57,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:37:57,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:37:57,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:37:57,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:37:57,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:37:57,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:37:57,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:37:57,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:37:57,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:37:57,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:37:57,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:37:57,092 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:37:57,092 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:37:57,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:37:57,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:37:57,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:37:57,530 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:37:57,531 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:37:57,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.7_overflow.ufo.UNBOUNDED.pals.c [2020-12-22 07:37:57,603 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38cbc8794/edceae472753475589ba86f22f7c6827/FLAG56b113f8f [2020-12-22 07:37:58,336 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:37:58,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.7_overflow.ufo.UNBOUNDED.pals.c [2020-12-22 07:37:58,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38cbc8794/edceae472753475589ba86f22f7c6827/FLAG56b113f8f [2020-12-22 07:37:58,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38cbc8794/edceae472753475589ba86f22f7c6827 [2020-12-22 07:37:58,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:37:58,686 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:37:58,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:37:58,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:37:58,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:37:58,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:37:58" (1/1) ... [2020-12-22 07:37:58,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40be263f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:58, skipping insertion in model container [2020-12-22 07:37:58,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:37:58" (1/1) ... [2020-12-22 07:37:58,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:37:58,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:37:59,076 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/seq-mthreaded/pals_lcr.7_overflow.ufo.UNBOUNDED.pals.c[20121,20134] [2020-12-22 07:37:59,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:37:59,098 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:37:59,161 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/seq-mthreaded/pals_lcr.7_overflow.ufo.UNBOUNDED.pals.c[20121,20134] [2020-12-22 07:37:59,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:37:59,184 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:37:59,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:59 WrapperNode [2020-12-22 07:37:59,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:37:59,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:37:59,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:37:59,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:37:59,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:59" (1/1) ... [2020-12-22 07:37:59,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:59" (1/1) ... [2020-12-22 07:37:59,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:37:59,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:37:59,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:37:59,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:37:59,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:59" (1/1) ... [2020-12-22 07:37:59,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:59" (1/1) ... [2020-12-22 07:37:59,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:59" (1/1) ... [2020-12-22 07:37:59,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:59" (1/1) ... [2020-12-22 07:37:59,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:59" (1/1) ... [2020-12-22 07:37:59,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:59" (1/1) ... [2020-12-22 07:37:59,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:59" (1/1) ... [2020-12-22 07:37:59,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:37:59,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:37:59,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:37:59,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:37:59,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:59" (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 07:37:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:37:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:37:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:37:59,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:38:00,208 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:38:00,209 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2020-12-22 07:38:00,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:38:00 BoogieIcfgContainer [2020-12-22 07:38:00,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:38:00,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:38:00,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:38:00,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:38:00,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:37:58" (1/3) ... [2020-12-22 07:38:00,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6cea8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:38:00, skipping insertion in model container [2020-12-22 07:38:00,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:59" (2/3) ... [2020-12-22 07:38:00,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6cea8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:38:00, skipping insertion in model container [2020-12-22 07:38:00,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:38:00" (3/3) ... [2020-12-22 07:38:00,224 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7_overflow.ufo.UNBOUNDED.pals.c [2020-12-22 07:38:00,232 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:38:00,238 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 07:38:00,260 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 07:38:00,290 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:38:00,290 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:38:00,291 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:38:00,291 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:38:00,291 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:38:00,291 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:38:00,291 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:38:00,291 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:38:00,310 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2020-12-22 07:38:00,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 07:38:00,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:00,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:00,320 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:00,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:00,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1781508813, now seen corresponding path program 1 times [2020-12-22 07:38:00,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:00,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126990457] [2020-12-22 07:38:00,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:00,576 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 07:38:00,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126990457] [2020-12-22 07:38:00,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:00,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:38:00,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467531954] [2020-12-22 07:38:00,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 07:38:00,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:00,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 07:38:00,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:38:00,602 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 2 states. [2020-12-22 07:38:00,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:00,634 INFO L93 Difference]: Finished difference Result 195 states and 331 transitions. [2020-12-22 07:38:00,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 07:38:00,636 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 41 [2020-12-22 07:38:00,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:00,648 INFO L225 Difference]: With dead ends: 195 [2020-12-22 07:38:00,649 INFO L226 Difference]: Without dead ends: 123 [2020-12-22 07:38:00,652 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 07:38:00,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-12-22 07:38:00,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-12-22 07:38:00,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-12-22 07:38:00,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 213 transitions. [2020-12-22 07:38:00,701 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 213 transitions. Word has length 41 [2020-12-22 07:38:00,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:00,702 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 213 transitions. [2020-12-22 07:38:00,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 07:38:00,702 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 213 transitions. [2020-12-22 07:38:00,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 07:38:00,705 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:00,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:00,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:38:00,705 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:00,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:00,707 INFO L82 PathProgramCache]: Analyzing trace with hash 2119091697, now seen corresponding path program 1 times [2020-12-22 07:38:00,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:00,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003017101] [2020-12-22 07:38:00,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:00,855 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 07:38:00,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003017101] [2020-12-22 07:38:00,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:00,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:38:00,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190947933] [2020-12-22 07:38:00,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:38:00,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:00,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:38:00,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:38:00,860 INFO L87 Difference]: Start difference. First operand 123 states and 213 transitions. Second operand 5 states. [2020-12-22 07:38:01,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:01,042 INFO L93 Difference]: Finished difference Result 194 states and 324 transitions. [2020-12-22 07:38:01,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:38:01,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-12-22 07:38:01,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:01,045 INFO L225 Difference]: With dead ends: 194 [2020-12-22 07:38:01,046 INFO L226 Difference]: Without dead ends: 123 [2020-12-22 07:38:01,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:38:01,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-12-22 07:38:01,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-12-22 07:38:01,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-12-22 07:38:01,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 163 transitions. [2020-12-22 07:38:01,062 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 163 transitions. Word has length 41 [2020-12-22 07:38:01,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:01,062 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 163 transitions. [2020-12-22 07:38:01,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:38:01,063 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 163 transitions. [2020-12-22 07:38:01,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 07:38:01,066 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:01,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:01,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:38:01,067 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:01,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:01,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1557003755, now seen corresponding path program 1 times [2020-12-22 07:38:01,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:01,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27129334] [2020-12-22 07:38:01,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:01,285 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 07:38:01,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27129334] [2020-12-22 07:38:01,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:01,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:01,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700228735] [2020-12-22 07:38:01,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:01,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:01,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:01,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:01,295 INFO L87 Difference]: Start difference. First operand 123 states and 163 transitions. Second operand 3 states. [2020-12-22 07:38:01,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:01,372 INFO L93 Difference]: Finished difference Result 251 states and 367 transitions. [2020-12-22 07:38:01,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:01,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-22 07:38:01,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:01,381 INFO L225 Difference]: With dead ends: 251 [2020-12-22 07:38:01,381 INFO L226 Difference]: Without dead ends: 184 [2020-12-22 07:38:01,382 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 07:38:01,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-12-22 07:38:01,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 182. [2020-12-22 07:38:01,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-12-22 07:38:01,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 258 transitions. [2020-12-22 07:38:01,400 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 258 transitions. Word has length 90 [2020-12-22 07:38:01,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:01,401 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 258 transitions. [2020-12-22 07:38:01,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:01,401 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 258 transitions. [2020-12-22 07:38:01,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 07:38:01,404 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:01,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:01,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:38:01,405 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:01,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:01,406 INFO L82 PathProgramCache]: Analyzing trace with hash -309494901, now seen corresponding path program 1 times [2020-12-22 07:38:01,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:01,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717538040] [2020-12-22 07:38:01,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:01,597 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 07:38:01,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717538040] [2020-12-22 07:38:01,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:01,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:01,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313455268] [2020-12-22 07:38:01,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:01,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:01,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:01,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:01,604 INFO L87 Difference]: Start difference. First operand 182 states and 258 transitions. Second operand 3 states. [2020-12-22 07:38:01,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:01,656 INFO L93 Difference]: Finished difference Result 422 states and 642 transitions. [2020-12-22 07:38:01,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:01,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-22 07:38:01,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:01,662 INFO L225 Difference]: With dead ends: 422 [2020-12-22 07:38:01,662 INFO L226 Difference]: Without dead ends: 296 [2020-12-22 07:38:01,668 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 07:38:01,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-12-22 07:38:01,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 294. [2020-12-22 07:38:01,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-12-22 07:38:01,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 437 transitions. [2020-12-22 07:38:01,725 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 437 transitions. Word has length 90 [2020-12-22 07:38:01,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:01,726 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 437 transitions. [2020-12-22 07:38:01,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:01,729 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 437 transitions. [2020-12-22 07:38:01,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 07:38:01,734 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:01,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:01,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:38:01,735 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:01,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:01,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1050927103, now seen corresponding path program 1 times [2020-12-22 07:38:01,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:01,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771780348] [2020-12-22 07:38:01,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:01,927 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 07:38:01,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771780348] [2020-12-22 07:38:01,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:01,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:01,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531406226] [2020-12-22 07:38:01,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:01,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:01,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:01,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:01,931 INFO L87 Difference]: Start difference. First operand 294 states and 437 transitions. Second operand 3 states. [2020-12-22 07:38:01,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:01,973 INFO L93 Difference]: Finished difference Result 746 states and 1159 transitions. [2020-12-22 07:38:01,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:01,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-22 07:38:01,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:02,007 INFO L225 Difference]: With dead ends: 746 [2020-12-22 07:38:02,008 INFO L226 Difference]: Without dead ends: 508 [2020-12-22 07:38:02,009 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 07:38:02,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-12-22 07:38:02,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 506. [2020-12-22 07:38:02,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-12-22 07:38:02,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 773 transitions. [2020-12-22 07:38:02,045 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 773 transitions. Word has length 90 [2020-12-22 07:38:02,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:02,046 INFO L481 AbstractCegarLoop]: Abstraction has 506 states and 773 transitions. [2020-12-22 07:38:02,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:02,046 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 773 transitions. [2020-12-22 07:38:02,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 07:38:02,048 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:02,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:02,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:38:02,048 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:02,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:02,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1796509833, now seen corresponding path program 1 times [2020-12-22 07:38:02,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:02,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201477607] [2020-12-22 07:38:02,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:02,166 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 07:38:02,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201477607] [2020-12-22 07:38:02,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:02,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:02,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577521316] [2020-12-22 07:38:02,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:02,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:02,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:02,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:02,171 INFO L87 Difference]: Start difference. First operand 506 states and 773 transitions. Second operand 3 states. [2020-12-22 07:38:02,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:02,249 INFO L93 Difference]: Finished difference Result 1358 states and 2127 transitions. [2020-12-22 07:38:02,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:02,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-22 07:38:02,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:02,259 INFO L225 Difference]: With dead ends: 1358 [2020-12-22 07:38:02,259 INFO L226 Difference]: Without dead ends: 908 [2020-12-22 07:38:02,260 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 07:38:02,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-12-22 07:38:02,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 906. [2020-12-22 07:38:02,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-12-22 07:38:02,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1401 transitions. [2020-12-22 07:38:02,307 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1401 transitions. Word has length 90 [2020-12-22 07:38:02,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:02,311 INFO L481 AbstractCegarLoop]: Abstraction has 906 states and 1401 transitions. [2020-12-22 07:38:02,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:02,311 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1401 transitions. [2020-12-22 07:38:02,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 07:38:02,315 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:02,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:02,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:38:02,316 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:02,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:02,318 INFO L82 PathProgramCache]: Analyzing trace with hash -259221845, now seen corresponding path program 1 times [2020-12-22 07:38:02,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:02,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112627889] [2020-12-22 07:38:02,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:02,445 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 07:38:02,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112627889] [2020-12-22 07:38:02,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:02,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:02,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774963131] [2020-12-22 07:38:02,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:02,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:02,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:02,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:02,448 INFO L87 Difference]: Start difference. First operand 906 states and 1401 transitions. Second operand 3 states. [2020-12-22 07:38:02,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:02,508 INFO L93 Difference]: Finished difference Result 2510 states and 3931 transitions. [2020-12-22 07:38:02,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:02,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-22 07:38:02,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:02,518 INFO L225 Difference]: With dead ends: 2510 [2020-12-22 07:38:02,519 INFO L226 Difference]: Without dead ends: 1660 [2020-12-22 07:38:02,521 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 07:38:02,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2020-12-22 07:38:02,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1658. [2020-12-22 07:38:02,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-12-22 07:38:02,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2569 transitions. [2020-12-22 07:38:02,624 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2569 transitions. Word has length 90 [2020-12-22 07:38:02,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:02,626 INFO L481 AbstractCegarLoop]: Abstraction has 1658 states and 2569 transitions. [2020-12-22 07:38:02,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:02,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2569 transitions. [2020-12-22 07:38:02,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 07:38:02,627 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:02,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:02,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:38:02,628 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:02,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:02,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1420392415, now seen corresponding path program 1 times [2020-12-22 07:38:02,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:02,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250433202] [2020-12-22 07:38:02,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:02,720 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 07:38:02,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250433202] [2020-12-22 07:38:02,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:02,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:02,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191992973] [2020-12-22 07:38:02,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:02,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:02,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:02,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:02,724 INFO L87 Difference]: Start difference. First operand 1658 states and 2569 transitions. Second operand 3 states. [2020-12-22 07:38:02,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:02,852 INFO L93 Difference]: Finished difference Result 4670 states and 7275 transitions. [2020-12-22 07:38:02,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:02,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-22 07:38:02,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:02,869 INFO L225 Difference]: With dead ends: 4670 [2020-12-22 07:38:02,869 INFO L226 Difference]: Without dead ends: 3068 [2020-12-22 07:38:02,872 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 07:38:02,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2020-12-22 07:38:03,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 3066. [2020-12-22 07:38:03,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3066 states. [2020-12-22 07:38:03,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3066 states to 3066 states and 4729 transitions. [2020-12-22 07:38:03,018 INFO L78 Accepts]: Start accepts. Automaton has 3066 states and 4729 transitions. Word has length 90 [2020-12-22 07:38:03,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:03,018 INFO L481 AbstractCegarLoop]: Abstraction has 3066 states and 4729 transitions. [2020-12-22 07:38:03,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:03,018 INFO L276 IsEmpty]: Start isEmpty. Operand 3066 states and 4729 transitions. [2020-12-22 07:38:03,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 07:38:03,019 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:03,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:03,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:38:03,020 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:03,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:03,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1758185557, now seen corresponding path program 1 times [2020-12-22 07:38:03,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:03,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896293000] [2020-12-22 07:38:03,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:03,154 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 07:38:03,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896293000] [2020-12-22 07:38:03,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:03,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:03,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105481824] [2020-12-22 07:38:03,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:03,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:03,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:03,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:03,158 INFO L87 Difference]: Start difference. First operand 3066 states and 4729 transitions. Second operand 3 states. [2020-12-22 07:38:03,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:03,365 INFO L93 Difference]: Finished difference Result 8702 states and 13435 transitions. [2020-12-22 07:38:03,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:03,366 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-22 07:38:03,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:03,396 INFO L225 Difference]: With dead ends: 8702 [2020-12-22 07:38:03,396 INFO L226 Difference]: Without dead ends: 5692 [2020-12-22 07:38:03,402 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 07:38:03,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5692 states. [2020-12-22 07:38:03,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5692 to 5690. [2020-12-22 07:38:03,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5690 states. [2020-12-22 07:38:03,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5690 states to 5690 states and 8697 transitions. [2020-12-22 07:38:03,711 INFO L78 Accepts]: Start accepts. Automaton has 5690 states and 8697 transitions. Word has length 90 [2020-12-22 07:38:03,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:03,711 INFO L481 AbstractCegarLoop]: Abstraction has 5690 states and 8697 transitions. [2020-12-22 07:38:03,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:03,712 INFO L276 IsEmpty]: Start isEmpty. Operand 5690 states and 8697 transitions. [2020-12-22 07:38:03,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 07:38:03,713 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:03,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:03,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:38:03,713 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:03,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:03,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1318796341, now seen corresponding path program 1 times [2020-12-22 07:38:03,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:03,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599464038] [2020-12-22 07:38:03,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:03,830 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 07:38:03,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599464038] [2020-12-22 07:38:03,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:03,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:38:03,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601035984] [2020-12-22 07:38:03,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:38:03,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:03,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:38:03,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:38:03,833 INFO L87 Difference]: Start difference. First operand 5690 states and 8697 transitions. Second operand 6 states. [2020-12-22 07:38:04,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:04,289 INFO L93 Difference]: Finished difference Result 11324 states and 17338 transitions. [2020-12-22 07:38:04,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:38:04,291 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2020-12-22 07:38:04,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:04,320 INFO L225 Difference]: With dead ends: 11324 [2020-12-22 07:38:04,321 INFO L226 Difference]: Without dead ends: 5690 [2020-12-22 07:38:04,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:38:04,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5690 states. [2020-12-22 07:38:04,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5690 to 5690. [2020-12-22 07:38:04,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5690 states. [2020-12-22 07:38:04,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5690 states to 5690 states and 8633 transitions. [2020-12-22 07:38:04,692 INFO L78 Accepts]: Start accepts. Automaton has 5690 states and 8633 transitions. Word has length 90 [2020-12-22 07:38:04,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:04,693 INFO L481 AbstractCegarLoop]: Abstraction has 5690 states and 8633 transitions. [2020-12-22 07:38:04,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:38:04,693 INFO L276 IsEmpty]: Start isEmpty. Operand 5690 states and 8633 transitions. [2020-12-22 07:38:04,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 07:38:04,694 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:04,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:04,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:38:04,694 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:04,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:04,695 INFO L82 PathProgramCache]: Analyzing trace with hash -297727987, now seen corresponding path program 1 times [2020-12-22 07:38:04,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:04,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507780729] [2020-12-22 07:38:04,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:04,802 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 07:38:04,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507780729] [2020-12-22 07:38:04,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:04,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:38:04,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860628917] [2020-12-22 07:38:04,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:38:04,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:04,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:38:04,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:38:04,806 INFO L87 Difference]: Start difference. First operand 5690 states and 8633 transitions. Second operand 6 states. [2020-12-22 07:38:05,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:05,296 INFO L93 Difference]: Finished difference Result 11324 states and 17210 transitions. [2020-12-22 07:38:05,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:38:05,297 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2020-12-22 07:38:05,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:05,336 INFO L225 Difference]: With dead ends: 11324 [2020-12-22 07:38:05,336 INFO L226 Difference]: Without dead ends: 5690 [2020-12-22 07:38:05,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:38:05,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5690 states. [2020-12-22 07:38:05,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5690 to 5690. [2020-12-22 07:38:05,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5690 states. [2020-12-22 07:38:05,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5690 states to 5690 states and 8569 transitions. [2020-12-22 07:38:05,729 INFO L78 Accepts]: Start accepts. Automaton has 5690 states and 8569 transitions. Word has length 90 [2020-12-22 07:38:05,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:05,730 INFO L481 AbstractCegarLoop]: Abstraction has 5690 states and 8569 transitions. [2020-12-22 07:38:05,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:38:05,730 INFO L276 IsEmpty]: Start isEmpty. Operand 5690 states and 8569 transitions. [2020-12-22 07:38:05,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 07:38:05,731 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:05,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:05,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:38:05,732 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:05,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:05,733 INFO L82 PathProgramCache]: Analyzing trace with hash 519920463, now seen corresponding path program 1 times [2020-12-22 07:38:05,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:05,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176152952] [2020-12-22 07:38:05,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:05,900 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 07:38:05,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176152952] [2020-12-22 07:38:05,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:05,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:38:05,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351068672] [2020-12-22 07:38:05,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:38:05,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:05,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:38:05,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:38:05,903 INFO L87 Difference]: Start difference. First operand 5690 states and 8569 transitions. Second operand 9 states. [2020-12-22 07:38:09,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:09,913 INFO L93 Difference]: Finished difference Result 84566 states and 127751 transitions. [2020-12-22 07:38:09,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 07:38:09,914 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-12-22 07:38:09,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:10,178 INFO L225 Difference]: With dead ends: 84566 [2020-12-22 07:38:10,178 INFO L226 Difference]: Without dead ends: 78932 [2020-12-22 07:38:10,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-12-22 07:38:10,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78932 states. [2020-12-22 07:38:12,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78932 to 11322. [2020-12-22 07:38:12,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11322 states. [2020-12-22 07:38:12,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11322 states to 11322 states and 16825 transitions. [2020-12-22 07:38:12,072 INFO L78 Accepts]: Start accepts. Automaton has 11322 states and 16825 transitions. Word has length 90 [2020-12-22 07:38:12,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:12,073 INFO L481 AbstractCegarLoop]: Abstraction has 11322 states and 16825 transitions. [2020-12-22 07:38:12,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:38:12,073 INFO L276 IsEmpty]: Start isEmpty. Operand 11322 states and 16825 transitions. [2020-12-22 07:38:12,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 07:38:12,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:12,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:12,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:38:12,076 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:12,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:12,077 INFO L82 PathProgramCache]: Analyzing trace with hash 78162119, now seen corresponding path program 1 times [2020-12-22 07:38:12,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:12,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877253026] [2020-12-22 07:38:12,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:12,511 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 07:38:12,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877253026] [2020-12-22 07:38:12,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:12,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:38:12,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457083004] [2020-12-22 07:38:12,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:38:12,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:12,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:38:12,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:38:12,515 INFO L87 Difference]: Start difference. First operand 11322 states and 16825 transitions. Second operand 9 states. [2020-12-22 07:38:14,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:14,197 INFO L93 Difference]: Finished difference Result 28224 states and 42108 transitions. [2020-12-22 07:38:14,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:38:14,198 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-12-22 07:38:14,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:14,235 INFO L225 Difference]: With dead ends: 28224 [2020-12-22 07:38:14,235 INFO L226 Difference]: Without dead ends: 16958 [2020-12-22 07:38:14,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:38:14,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16958 states. [2020-12-22 07:38:15,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16958 to 11322. [2020-12-22 07:38:15,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11322 states. [2020-12-22 07:38:15,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11322 states to 11322 states and 16697 transitions. [2020-12-22 07:38:15,203 INFO L78 Accepts]: Start accepts. Automaton has 11322 states and 16697 transitions. Word has length 92 [2020-12-22 07:38:15,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:15,204 INFO L481 AbstractCegarLoop]: Abstraction has 11322 states and 16697 transitions. [2020-12-22 07:38:15,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:38:15,204 INFO L276 IsEmpty]: Start isEmpty. Operand 11322 states and 16697 transitions. [2020-12-22 07:38:15,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 07:38:15,205 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:15,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:15,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:38:15,206 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:15,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:15,206 INFO L82 PathProgramCache]: Analyzing trace with hash 11668607, now seen corresponding path program 1 times [2020-12-22 07:38:15,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:15,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203355118] [2020-12-22 07:38:15,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:15,281 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 07:38:15,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203355118] [2020-12-22 07:38:15,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:15,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:15,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571883832] [2020-12-22 07:38:15,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:15,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:15,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:15,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:15,283 INFO L87 Difference]: Start difference. First operand 11322 states and 16697 transitions. Second operand 3 states. [2020-12-22 07:38:16,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:16,241 INFO L93 Difference]: Finished difference Result 27904 states and 41149 transitions. [2020-12-22 07:38:16,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:16,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-22 07:38:16,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:16,267 INFO L225 Difference]: With dead ends: 27904 [2020-12-22 07:38:16,267 INFO L226 Difference]: Without dead ends: 16638 [2020-12-22 07:38:16,281 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 07:38:16,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16638 states. [2020-12-22 07:38:17,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16638 to 16636. [2020-12-22 07:38:17,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16636 states. [2020-12-22 07:38:17,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16636 states to 16636 states and 24315 transitions. [2020-12-22 07:38:17,599 INFO L78 Accepts]: Start accepts. Automaton has 16636 states and 24315 transitions. Word has length 92 [2020-12-22 07:38:17,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:17,599 INFO L481 AbstractCegarLoop]: Abstraction has 16636 states and 24315 transitions. [2020-12-22 07:38:17,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:17,599 INFO L276 IsEmpty]: Start isEmpty. Operand 16636 states and 24315 transitions. [2020-12-22 07:38:17,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 07:38:17,600 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:17,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:17,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:38:17,601 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:17,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:17,601 INFO L82 PathProgramCache]: Analyzing trace with hash 2008302822, now seen corresponding path program 1 times [2020-12-22 07:38:17,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:17,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358478419] [2020-12-22 07:38:17,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:17,711 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 07:38:17,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358478419] [2020-12-22 07:38:17,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:17,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 07:38:17,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769115873] [2020-12-22 07:38:17,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:38:17,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:17,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:38:17,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:38:17,713 INFO L87 Difference]: Start difference. First operand 16636 states and 24315 transitions. Second operand 8 states. [2020-12-22 07:38:20,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:20,080 INFO L93 Difference]: Finished difference Result 30879 states and 44657 transitions. [2020-12-22 07:38:20,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:38:20,080 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-12-22 07:38:20,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:20,119 INFO L225 Difference]: With dead ends: 30879 [2020-12-22 07:38:20,120 INFO L226 Difference]: Without dead ends: 30877 [2020-12-22 07:38:20,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:38:20,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30877 states. [2020-12-22 07:38:21,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30877 to 17404. [2020-12-22 07:38:21,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17404 states. [2020-12-22 07:38:21,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17404 states to 17404 states and 25019 transitions. [2020-12-22 07:38:21,702 INFO L78 Accepts]: Start accepts. Automaton has 17404 states and 25019 transitions. Word has length 93 [2020-12-22 07:38:21,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:21,703 INFO L481 AbstractCegarLoop]: Abstraction has 17404 states and 25019 transitions. [2020-12-22 07:38:21,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:38:21,703 INFO L276 IsEmpty]: Start isEmpty. Operand 17404 states and 25019 transitions. [2020-12-22 07:38:21,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 07:38:21,716 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:21,716 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:21,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:38:21,717 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:21,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:21,717 INFO L82 PathProgramCache]: Analyzing trace with hash 727934169, now seen corresponding path program 1 times [2020-12-22 07:38:21,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:21,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027434095] [2020-12-22 07:38:21,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:21,913 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 07:38:21,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027434095] [2020-12-22 07:38:21,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:21,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:38:21,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824622226] [2020-12-22 07:38:21,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:38:21,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:21,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:38:21,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:38:21,915 INFO L87 Difference]: Start difference. First operand 17404 states and 25019 transitions. Second operand 9 states. [2020-12-22 07:38:30,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:30,164 INFO L93 Difference]: Finished difference Result 142220 states and 204419 transitions. [2020-12-22 07:38:30,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:38:30,165 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 128 [2020-12-22 07:38:30,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:30,509 INFO L225 Difference]: With dead ends: 142220 [2020-12-22 07:38:30,509 INFO L226 Difference]: Without dead ends: 124874 [2020-12-22 07:38:30,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-12-22 07:38:30,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124874 states. [2020-12-22 07:38:34,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124874 to 34748. [2020-12-22 07:38:34,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34748 states. [2020-12-22 07:38:34,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34748 states to 34748 states and 49787 transitions. [2020-12-22 07:38:34,070 INFO L78 Accepts]: Start accepts. Automaton has 34748 states and 49787 transitions. Word has length 128 [2020-12-22 07:38:34,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:34,070 INFO L481 AbstractCegarLoop]: Abstraction has 34748 states and 49787 transitions. [2020-12-22 07:38:34,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:38:34,070 INFO L276 IsEmpty]: Start isEmpty. Operand 34748 states and 49787 transitions. [2020-12-22 07:38:34,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 07:38:34,086 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:34,086 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:34,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 07:38:34,087 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:34,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:34,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1040848647, now seen corresponding path program 1 times [2020-12-22 07:38:34,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:34,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319738319] [2020-12-22 07:38:34,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 07:38:34,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319738319] [2020-12-22 07:38:34,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:34,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:38:34,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979682194] [2020-12-22 07:38:34,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:38:34,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:34,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:38:34,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:38:34,267 INFO L87 Difference]: Start difference. First operand 34748 states and 49787 transitions. Second operand 9 states. [2020-12-22 07:38:44,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:44,388 INFO L93 Difference]: Finished difference Result 159564 states and 229187 transitions. [2020-12-22 07:38:44,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:38:44,389 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 128 [2020-12-22 07:38:44,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:44,568 INFO L225 Difference]: With dead ends: 159564 [2020-12-22 07:38:44,568 INFO L226 Difference]: Without dead ends: 142218 [2020-12-22 07:38:44,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-12-22 07:38:44,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142218 states. [2020-12-22 07:38:50,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142218 to 60796. [2020-12-22 07:38:50,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60796 states. [2020-12-22 07:38:50,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60796 states to 60796 states and 86779 transitions. [2020-12-22 07:38:50,261 INFO L78 Accepts]: Start accepts. Automaton has 60796 states and 86779 transitions. Word has length 128 [2020-12-22 07:38:50,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:50,261 INFO L481 AbstractCegarLoop]: Abstraction has 60796 states and 86779 transitions. [2020-12-22 07:38:50,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:38:50,262 INFO L276 IsEmpty]: Start isEmpty. Operand 60796 states and 86779 transitions. [2020-12-22 07:38:50,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 07:38:50,278 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:50,278 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:50,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 07:38:50,278 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:50,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:50,279 INFO L82 PathProgramCache]: Analyzing trace with hash 90791193, now seen corresponding path program 1 times [2020-12-22 07:38:50,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:50,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865059993] [2020-12-22 07:38:50,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 07:38:50,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865059993] [2020-12-22 07:38:50,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:50,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:38:50,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434119422] [2020-12-22 07:38:50,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:38:50,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:50,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:38:50,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:38:50,454 INFO L87 Difference]: Start difference. First operand 60796 states and 86779 transitions. Second operand 9 states. [2020-12-22 07:39:02,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:39:02,291 INFO L93 Difference]: Finished difference Result 176908 states and 253955 transitions. [2020-12-22 07:39:02,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:39:02,291 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 128 [2020-12-22 07:39:02,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:39:02,485 INFO L225 Difference]: With dead ends: 176908 [2020-12-22 07:39:02,485 INFO L226 Difference]: Without dead ends: 159562 [2020-12-22 07:39:02,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-12-22 07:39:02,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159562 states. [2020-12-22 07:39:09,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159562 to 78140. [2020-12-22 07:39:09,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78140 states. [2020-12-22 07:39:10,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78140 states to 78140 states and 111547 transitions. [2020-12-22 07:39:10,095 INFO L78 Accepts]: Start accepts. Automaton has 78140 states and 111547 transitions. Word has length 128 [2020-12-22 07:39:10,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:39:10,095 INFO L481 AbstractCegarLoop]: Abstraction has 78140 states and 111547 transitions. [2020-12-22 07:39:10,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:39:10,095 INFO L276 IsEmpty]: Start isEmpty. Operand 78140 states and 111547 transitions. [2020-12-22 07:39:10,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 07:39:10,113 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:39:10,113 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:39:10,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 07:39:10,114 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:39:10,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:39:10,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1144667847, now seen corresponding path program 1 times [2020-12-22 07:39:10,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:39:10,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65486358] [2020-12-22 07:39:10,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:39:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:39:10,330 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 07:39:10,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65486358] [2020-12-22 07:39:10,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:39:10,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:39:10,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865228791] [2020-12-22 07:39:10,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:39:10,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:39:10,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:39:10,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:39:10,332 INFO L87 Difference]: Start difference. First operand 78140 states and 111547 transitions. Second operand 9 states. [2020-12-22 07:39:24,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:39:24,560 INFO L93 Difference]: Finished difference Result 194252 states and 278723 transitions. [2020-12-22 07:39:24,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:39:24,561 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 128 [2020-12-22 07:39:24,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:39:24,794 INFO L225 Difference]: With dead ends: 194252 [2020-12-22 07:39:24,794 INFO L226 Difference]: Without dead ends: 176906 [2020-12-22 07:39:24,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-12-22 07:39:25,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176906 states. [2020-12-22 07:39:34,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176906 to 95484. [2020-12-22 07:39:34,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95484 states. [2020-12-22 07:39:34,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95484 states to 95484 states and 136315 transitions. [2020-12-22 07:39:34,329 INFO L78 Accepts]: Start accepts. Automaton has 95484 states and 136315 transitions. Word has length 128 [2020-12-22 07:39:34,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:39:34,329 INFO L481 AbstractCegarLoop]: Abstraction has 95484 states and 136315 transitions. [2020-12-22 07:39:34,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:39:34,330 INFO L276 IsEmpty]: Start isEmpty. Operand 95484 states and 136315 transitions. [2020-12-22 07:39:34,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 07:39:34,347 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:39:34,347 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:39:34,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 07:39:34,348 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:39:34,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:39:34,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1729303897, now seen corresponding path program 1 times [2020-12-22 07:39:34,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:39:34,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717739226] [2020-12-22 07:39:34,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:39:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:39:34,528 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 07:39:34,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717739226] [2020-12-22 07:39:34,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:39:34,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:39:34,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474482764] [2020-12-22 07:39:34,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:39:34,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:39:34,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:39:34,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:39:34,531 INFO L87 Difference]: Start difference. First operand 95484 states and 136315 transitions. Second operand 9 states. [2020-12-22 07:39:52,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:39:52,054 INFO L93 Difference]: Finished difference Result 211596 states and 303491 transitions. [2020-12-22 07:39:52,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:39:52,055 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 128 [2020-12-22 07:39:52,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:39:52,372 INFO L225 Difference]: With dead ends: 211596 [2020-12-22 07:39:52,372 INFO L226 Difference]: Without dead ends: 194250 [2020-12-22 07:39:52,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-12-22 07:39:52,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194250 states. [2020-12-22 07:40:03,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194250 to 112828. [2020-12-22 07:40:03,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112828 states. [2020-12-22 07:40:04,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112828 states to 112828 states and 161083 transitions. [2020-12-22 07:40:04,037 INFO L78 Accepts]: Start accepts. Automaton has 112828 states and 161083 transitions. Word has length 128 [2020-12-22 07:40:04,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:40:04,038 INFO L481 AbstractCegarLoop]: Abstraction has 112828 states and 161083 transitions. [2020-12-22 07:40:04,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:40:04,038 INFO L276 IsEmpty]: Start isEmpty. Operand 112828 states and 161083 transitions. [2020-12-22 07:40:04,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 07:40:04,053 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:40:04,053 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:40:04,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 07:40:04,053 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:40:04,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:40:04,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1163483513, now seen corresponding path program 1 times [2020-12-22 07:40:04,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:40:04,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303809229] [2020-12-22 07:40:04,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:40:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:40:04,449 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 07:40:04,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303809229] [2020-12-22 07:40:04,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:40:04,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:40:04,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233970519] [2020-12-22 07:40:04,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:40:04,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:40:04,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:40:04,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:40:04,452 INFO L87 Difference]: Start difference. First operand 112828 states and 161083 transitions. Second operand 9 states. [2020-12-22 07:40:25,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:40:25,115 INFO L93 Difference]: Finished difference Result 228940 states and 328259 transitions. [2020-12-22 07:40:25,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:40:25,116 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 128 [2020-12-22 07:40:25,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:40:25,601 INFO L225 Difference]: With dead ends: 228940 [2020-12-22 07:40:25,601 INFO L226 Difference]: Without dead ends: 211594 [2020-12-22 07:40:25,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:40:25,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211594 states. [2020-12-22 07:40:39,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211594 to 130172. [2020-12-22 07:40:39,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130172 states. [2020-12-22 07:40:40,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130172 states to 130172 states and 185851 transitions. [2020-12-22 07:40:40,268 INFO L78 Accepts]: Start accepts. Automaton has 130172 states and 185851 transitions. Word has length 128 [2020-12-22 07:40:40,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:40:40,269 INFO L481 AbstractCegarLoop]: Abstraction has 130172 states and 185851 transitions. [2020-12-22 07:40:40,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:40:40,269 INFO L276 IsEmpty]: Start isEmpty. Operand 130172 states and 185851 transitions. [2020-12-22 07:40:40,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 07:40:40,287 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:40:40,287 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:40:40,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 07:40:40,288 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:40:40,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:40:40,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1352699289, now seen corresponding path program 1 times [2020-12-22 07:40:40,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:40:40,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371803657] [2020-12-22 07:40:40,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:40:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:40:40,457 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:40:40,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371803657] [2020-12-22 07:40:40,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:40:40,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:40:40,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821223645] [2020-12-22 07:40:40,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:40:40,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:40:40,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:40:40,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:40:40,460 INFO L87 Difference]: Start difference. First operand 130172 states and 185851 transitions. Second operand 9 states. [2020-12-22 07:41:05,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:41:05,037 INFO L93 Difference]: Finished difference Result 235660 states and 337923 transitions. [2020-12-22 07:41:05,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:41:05,038 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 128 [2020-12-22 07:41:05,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:41:05,566 INFO L225 Difference]: With dead ends: 235660 [2020-12-22 07:41:05,567 INFO L226 Difference]: Without dead ends: 223626 [2020-12-22 07:41:05,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:41:05,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223626 states.