/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-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:31:37,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:31:37,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:31:37,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:31:37,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:31:37,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:31:37,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:31:37,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:31:37,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:31:37,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:31:37,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:31:37,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:31:37,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:31:37,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:31:37,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:31:37,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:31:37,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:31:37,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:31:37,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:31:37,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:31:37,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:31:37,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:31:37,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:31:37,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:31:37,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:31:37,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:31:37,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:31:37,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:31:37,738 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:31:37,796 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:31:37,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:31:37,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:31:37,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:31:37,801 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:31:37,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:31:37,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:31:37,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:31:37,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:31:37,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:31:37,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:31:37,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:31:37,804 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:31:37,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:31:37,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:31:37,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:31:37,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:31:37,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:31:37,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:31:37,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:31:37,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:31:37,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:31:37,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:31:37,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:31:37,807 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:31:37,807 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:31:38,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:31:38,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:31:38,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:31:38,270 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:31:38,271 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:31:38,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:31:38,356 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07e1b516e/9c18d5755a75411a957545e7c10f3aca/FLAG362b66d37 [2020-12-22 08:31:39,137 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:31:39,137 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:31:39,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07e1b516e/9c18d5755a75411a957545e7c10f3aca/FLAG362b66d37 [2020-12-22 08:31:39,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07e1b516e/9c18d5755a75411a957545e7c10f3aca [2020-12-22 08:31:39,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:31:39,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:31:39,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:31:39,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:31:39,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:31:39,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:31:39" (1/1) ... [2020-12-22 08:31:39,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c0def27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:39, skipping insertion in model container [2020-12-22 08:31:39,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:31:39" (1/1) ... [2020-12-22 08:31:39,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:31:39,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:31:39,764 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-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5952,5965] [2020-12-22 08:31:39,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:31:39,855 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:31:39,906 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-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5952,5965] [2020-12-22 08:31:39,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:31:39,966 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:31:39,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:39 WrapperNode [2020-12-22 08:31:39,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:31:39,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:31:39,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:31:39,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:31:39,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:39" (1/1) ... [2020-12-22 08:31:40,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:39" (1/1) ... [2020-12-22 08:31:40,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:31:40,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:31:40,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:31:40,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:31:40,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:39" (1/1) ... [2020-12-22 08:31:40,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:39" (1/1) ... [2020-12-22 08:31:40,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:39" (1/1) ... [2020-12-22 08:31:40,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:39" (1/1) ... [2020-12-22 08:31:40,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:39" (1/1) ... [2020-12-22 08:31:40,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:39" (1/1) ... [2020-12-22 08:31:40,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:39" (1/1) ... [2020-12-22 08:31:40,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:31:40,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:31:40,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:31:40,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:31:40,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:39" (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 08:31:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:31:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:31:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:31:40,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:31:41,239 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:31:41,240 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:31:41,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:31:41 BoogieIcfgContainer [2020-12-22 08:31:41,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:31:41,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:31:41,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:31:41,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:31:41,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:31:39" (1/3) ... [2020-12-22 08:31:41,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530b2e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:31:41, skipping insertion in model container [2020-12-22 08:31:41,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:39" (2/3) ... [2020-12-22 08:31:41,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530b2e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:31:41, skipping insertion in model container [2020-12-22 08:31:41,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:31:41" (3/3) ... [2020-12-22 08:31:41,262 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:31:41,277 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:31:41,284 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:31:41,334 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:31:41,371 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:31:41,371 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:31:41,371 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:31:41,371 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:31:41,371 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:31:41,372 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:31:41,372 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:31:41,372 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:31:41,391 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-12-22 08:31:41,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 08:31:41,402 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:41,403 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] [2020-12-22 08:31:41,403 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:41,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:41,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1025697732, now seen corresponding path program 1 times [2020-12-22 08:31:41,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:41,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444451759] [2020-12-22 08:31:41,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:41,853 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 08:31:41,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444451759] [2020-12-22 08:31:41,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:41,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:41,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453058286] [2020-12-22 08:31:41,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:41,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:41,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:41,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:41,895 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 3 states. [2020-12-22 08:31:42,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:42,055 INFO L93 Difference]: Finished difference Result 328 states and 528 transitions. [2020-12-22 08:31:42,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:42,060 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 08:31:42,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:42,091 INFO L225 Difference]: With dead ends: 328 [2020-12-22 08:31:42,091 INFO L226 Difference]: Without dead ends: 219 [2020-12-22 08:31:42,095 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 08:31:42,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-12-22 08:31:42,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 217. [2020-12-22 08:31:42,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-12-22 08:31:42,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 325 transitions. [2020-12-22 08:31:42,203 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 325 transitions. Word has length 61 [2020-12-22 08:31:42,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:42,204 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 325 transitions. [2020-12-22 08:31:42,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:42,205 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 325 transitions. [2020-12-22 08:31:42,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 08:31:42,209 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:42,210 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] [2020-12-22 08:31:42,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:31:42,212 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:42,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:42,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1571099909, now seen corresponding path program 1 times [2020-12-22 08:31:42,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:42,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463084339] [2020-12-22 08:31:42,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:42,384 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 08:31:42,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463084339] [2020-12-22 08:31:42,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:42,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:42,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136119080] [2020-12-22 08:31:42,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:42,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:42,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:42,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:42,389 INFO L87 Difference]: Start difference. First operand 217 states and 325 transitions. Second operand 3 states. [2020-12-22 08:31:42,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:42,469 INFO L93 Difference]: Finished difference Result 549 states and 853 transitions. [2020-12-22 08:31:42,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:42,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-22 08:31:42,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:42,476 INFO L225 Difference]: With dead ends: 549 [2020-12-22 08:31:42,477 INFO L226 Difference]: Without dead ends: 367 [2020-12-22 08:31:42,482 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 08:31:42,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-12-22 08:31:42,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2020-12-22 08:31:42,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-12-22 08:31:42,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 560 transitions. [2020-12-22 08:31:42,551 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 560 transitions. Word has length 62 [2020-12-22 08:31:42,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:42,552 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 560 transitions. [2020-12-22 08:31:42,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:42,552 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 560 transitions. [2020-12-22 08:31:42,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 08:31:42,554 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:42,555 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] [2020-12-22 08:31:42,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:31:42,555 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:42,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:42,556 INFO L82 PathProgramCache]: Analyzing trace with hash 195770199, now seen corresponding path program 1 times [2020-12-22 08:31:42,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:42,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850564340] [2020-12-22 08:31:42,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:42,673 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 08:31:42,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850564340] [2020-12-22 08:31:42,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:42,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:42,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047665641] [2020-12-22 08:31:42,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:42,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:42,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:42,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:42,681 INFO L87 Difference]: Start difference. First operand 365 states and 560 transitions. Second operand 3 states. [2020-12-22 08:31:42,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:42,780 INFO L93 Difference]: Finished difference Result 961 states and 1506 transitions. [2020-12-22 08:31:42,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:42,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 08:31:42,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:42,785 INFO L225 Difference]: With dead ends: 961 [2020-12-22 08:31:42,786 INFO L226 Difference]: Without dead ends: 631 [2020-12-22 08:31:42,787 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 08:31:42,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-12-22 08:31:42,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 629. [2020-12-22 08:31:42,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2020-12-22 08:31:42,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 976 transitions. [2020-12-22 08:31:42,833 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 976 transitions. Word has length 63 [2020-12-22 08:31:42,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:42,833 INFO L481 AbstractCegarLoop]: Abstraction has 629 states and 976 transitions. [2020-12-22 08:31:42,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:42,834 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 976 transitions. [2020-12-22 08:31:42,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:31:42,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:42,836 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] [2020-12-22 08:31:42,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:31:42,837 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:42,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:42,837 INFO L82 PathProgramCache]: Analyzing trace with hash 92320152, now seen corresponding path program 1 times [2020-12-22 08:31:42,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:42,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406965802] [2020-12-22 08:31:42,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:42,956 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 08:31:42,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406965802] [2020-12-22 08:31:42,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:42,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:42,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704326590] [2020-12-22 08:31:42,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:42,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:42,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:42,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:42,963 INFO L87 Difference]: Start difference. First operand 629 states and 976 transitions. Second operand 3 states. [2020-12-22 08:31:43,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:43,063 INFO L93 Difference]: Finished difference Result 1689 states and 2650 transitions. [2020-12-22 08:31:43,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:43,064 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 08:31:43,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:43,073 INFO L225 Difference]: With dead ends: 1689 [2020-12-22 08:31:43,074 INFO L226 Difference]: Without dead ends: 1095 [2020-12-22 08:31:43,076 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 08:31:43,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2020-12-22 08:31:43,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1093. [2020-12-22 08:31:43,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1093 states. [2020-12-22 08:31:43,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1700 transitions. [2020-12-22 08:31:43,152 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1700 transitions. Word has length 64 [2020-12-22 08:31:43,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:43,155 INFO L481 AbstractCegarLoop]: Abstraction has 1093 states and 1700 transitions. [2020-12-22 08:31:43,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:43,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1700 transitions. [2020-12-22 08:31:43,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:31:43,158 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:43,158 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] [2020-12-22 08:31:43,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:31:43,159 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:43,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:43,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1673406722, now seen corresponding path program 1 times [2020-12-22 08:31:43,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:43,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085269005] [2020-12-22 08:31:43,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:43,429 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 08:31:43,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085269005] [2020-12-22 08:31:43,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:43,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:31:43,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887457836] [2020-12-22 08:31:43,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:31:43,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:43,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:31:43,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:31:43,432 INFO L87 Difference]: Start difference. First operand 1093 states and 1700 transitions. Second operand 7 states. [2020-12-22 08:31:43,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:43,970 INFO L93 Difference]: Finished difference Result 5663 states and 8841 transitions. [2020-12-22 08:31:43,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:31:43,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-12-22 08:31:43,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:43,999 INFO L225 Difference]: With dead ends: 5663 [2020-12-22 08:31:43,999 INFO L226 Difference]: Without dead ends: 4605 [2020-12-22 08:31:44,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:31:44,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2020-12-22 08:31:44,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 4597. [2020-12-22 08:31:44,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4597 states. [2020-12-22 08:31:44,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4597 states to 4597 states and 7156 transitions. [2020-12-22 08:31:44,360 INFO L78 Accepts]: Start accepts. Automaton has 4597 states and 7156 transitions. Word has length 65 [2020-12-22 08:31:44,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:44,361 INFO L481 AbstractCegarLoop]: Abstraction has 4597 states and 7156 transitions. [2020-12-22 08:31:44,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:31:44,361 INFO L276 IsEmpty]: Start isEmpty. Operand 4597 states and 7156 transitions. [2020-12-22 08:31:44,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:31:44,363 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:44,363 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] [2020-12-22 08:31:44,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:31:44,364 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:44,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:44,365 INFO L82 PathProgramCache]: Analyzing trace with hash 222361335, now seen corresponding path program 1 times [2020-12-22 08:31:44,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:44,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481569538] [2020-12-22 08:31:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:44,421 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 08:31:44,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481569538] [2020-12-22 08:31:44,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:44,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:44,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285234465] [2020-12-22 08:31:44,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:44,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:44,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:44,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:44,424 INFO L87 Difference]: Start difference. First operand 4597 states and 7156 transitions. Second operand 3 states. [2020-12-22 08:31:44,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:45,000 INFO L93 Difference]: Finished difference Result 12361 states and 19206 transitions. [2020-12-22 08:31:45,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:45,001 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 08:31:45,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:45,041 INFO L225 Difference]: With dead ends: 12361 [2020-12-22 08:31:45,042 INFO L226 Difference]: Without dead ends: 7799 [2020-12-22 08:31:45,051 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 08:31:45,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7799 states. [2020-12-22 08:31:45,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7799 to 7797. [2020-12-22 08:31:45,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7797 states. [2020-12-22 08:31:45,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7797 states to 7797 states and 12004 transitions. [2020-12-22 08:31:45,681 INFO L78 Accepts]: Start accepts. Automaton has 7797 states and 12004 transitions. Word has length 66 [2020-12-22 08:31:45,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:45,682 INFO L481 AbstractCegarLoop]: Abstraction has 7797 states and 12004 transitions. [2020-12-22 08:31:45,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:45,682 INFO L276 IsEmpty]: Start isEmpty. Operand 7797 states and 12004 transitions. [2020-12-22 08:31:45,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:31:45,683 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:45,684 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] [2020-12-22 08:31:45,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:31:45,684 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:45,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:45,686 INFO L82 PathProgramCache]: Analyzing trace with hash 376052341, now seen corresponding path program 1 times [2020-12-22 08:31:45,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:45,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846146585] [2020-12-22 08:31:45,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:45,852 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 08:31:45,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846146585] [2020-12-22 08:31:45,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:45,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:31:45,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870310378] [2020-12-22 08:31:45,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:31:45,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:45,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:31:45,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:31:45,859 INFO L87 Difference]: Start difference. First operand 7797 states and 12004 transitions. Second operand 6 states. [2020-12-22 08:31:47,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:47,523 INFO L93 Difference]: Finished difference Result 29259 states and 45031 transitions. [2020-12-22 08:31:47,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:31:47,524 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-22 08:31:47,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:47,630 INFO L225 Difference]: With dead ends: 29259 [2020-12-22 08:31:47,630 INFO L226 Difference]: Without dead ends: 21497 [2020-12-22 08:31:47,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:31:47,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21497 states. [2020-12-22 08:31:49,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21497 to 21493. [2020-12-22 08:31:49,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21493 states. [2020-12-22 08:31:49,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21493 states to 21493 states and 32916 transitions. [2020-12-22 08:31:49,383 INFO L78 Accepts]: Start accepts. Automaton has 21493 states and 32916 transitions. Word has length 67 [2020-12-22 08:31:49,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:49,384 INFO L481 AbstractCegarLoop]: Abstraction has 21493 states and 32916 transitions. [2020-12-22 08:31:49,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:31:49,385 INFO L276 IsEmpty]: Start isEmpty. Operand 21493 states and 32916 transitions. [2020-12-22 08:31:49,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:31:49,390 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:49,390 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] [2020-12-22 08:31:49,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:31:49,391 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:49,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:49,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1993557232, now seen corresponding path program 1 times [2020-12-22 08:31:49,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:49,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8649757] [2020-12-22 08:31:49,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:49,542 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 08:31:49,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8649757] [2020-12-22 08:31:49,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:49,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:31:49,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630576364] [2020-12-22 08:31:49,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:31:49,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:49,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:31:49,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:31:49,546 INFO L87 Difference]: Start difference. First operand 21493 states and 32916 transitions. Second operand 7 states. [2020-12-22 08:31:54,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:54,068 INFO L93 Difference]: Finished difference Result 112737 states and 172858 transitions. [2020-12-22 08:31:54,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:31:54,069 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2020-12-22 08:31:54,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:54,318 INFO L225 Difference]: With dead ends: 112737 [2020-12-22 08:31:54,318 INFO L226 Difference]: Without dead ends: 91279 [2020-12-22 08:31:54,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:31:54,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91279 states. [2020-12-22 08:31:58,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91279 to 42949. [2020-12-22 08:31:58,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42949 states. [2020-12-22 08:31:58,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42949 states to 42949 states and 64900 transitions. [2020-12-22 08:31:58,201 INFO L78 Accepts]: Start accepts. Automaton has 42949 states and 64900 transitions. Word has length 67 [2020-12-22 08:31:58,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:58,202 INFO L481 AbstractCegarLoop]: Abstraction has 42949 states and 64900 transitions. [2020-12-22 08:31:58,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:31:58,202 INFO L276 IsEmpty]: Start isEmpty. Operand 42949 states and 64900 transitions. [2020-12-22 08:31:58,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:31:58,203 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:58,203 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] [2020-12-22 08:31:58,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:31:58,203 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:58,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:58,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1651275811, now seen corresponding path program 1 times [2020-12-22 08:31:58,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:58,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946440479] [2020-12-22 08:31:58,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:58,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:58,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946440479] [2020-12-22 08:31:58,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:58,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:31:58,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156003441] [2020-12-22 08:31:58,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:31:58,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:58,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:31:58,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:31:58,325 INFO L87 Difference]: Start difference. First operand 42949 states and 64900 transitions. Second operand 5 states. [2020-12-22 08:32:03,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:03,258 INFO L93 Difference]: Finished difference Result 87655 states and 131557 transitions. [2020-12-22 08:32:03,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:32:03,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-22 08:32:03,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:03,432 INFO L225 Difference]: With dead ends: 87655 [2020-12-22 08:32:03,432 INFO L226 Difference]: Without dead ends: 87653 [2020-12-22 08:32:03,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:32:03,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87653 states. [2020-12-22 08:32:07,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87653 to 44741. [2020-12-22 08:32:07,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44741 states. [2020-12-22 08:32:07,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44741 states to 44741 states and 66692 transitions. [2020-12-22 08:32:07,117 INFO L78 Accepts]: Start accepts. Automaton has 44741 states and 66692 transitions. Word has length 68 [2020-12-22 08:32:07,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:07,118 INFO L481 AbstractCegarLoop]: Abstraction has 44741 states and 66692 transitions. [2020-12-22 08:32:07,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:32:07,118 INFO L276 IsEmpty]: Start isEmpty. Operand 44741 states and 66692 transitions. [2020-12-22 08:32:07,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:32:07,119 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:07,119 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] [2020-12-22 08:32:07,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:32:07,120 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:07,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:07,120 INFO L82 PathProgramCache]: Analyzing trace with hash -339484320, now seen corresponding path program 1 times [2020-12-22 08:32:07,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:07,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309549979] [2020-12-22 08:32:07,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:07,196 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 08:32:07,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309549979] [2020-12-22 08:32:07,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:07,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:32:07,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526355075] [2020-12-22 08:32:07,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:32:07,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:07,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:32:07,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:07,199 INFO L87 Difference]: Start difference. First operand 44741 states and 66692 transitions. Second operand 3 states. [2020-12-22 08:32:10,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:10,422 INFO L93 Difference]: Finished difference Result 97051 states and 144488 transitions. [2020-12-22 08:32:10,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:32:10,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 08:32:10,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:10,526 INFO L225 Difference]: With dead ends: 97051 [2020-12-22 08:32:10,526 INFO L226 Difference]: Without dead ends: 52345 [2020-12-22 08:32:10,602 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 08:32:10,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52345 states. [2020-12-22 08:32:14,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52345 to 52199. [2020-12-22 08:32:14,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52199 states. [2020-12-22 08:32:14,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52199 states to 52199 states and 77398 transitions. [2020-12-22 08:32:14,457 INFO L78 Accepts]: Start accepts. Automaton has 52199 states and 77398 transitions. Word has length 69 [2020-12-22 08:32:14,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:14,457 INFO L481 AbstractCegarLoop]: Abstraction has 52199 states and 77398 transitions. [2020-12-22 08:32:14,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:32:14,457 INFO L276 IsEmpty]: Start isEmpty. Operand 52199 states and 77398 transitions. [2020-12-22 08:32:14,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 08:32:14,478 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:14,478 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 08:32:14,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:32:14,479 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:14,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:14,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1573259719, now seen corresponding path program 1 times [2020-12-22 08:32:14,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:14,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313637010] [2020-12-22 08:32:14,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:14,544 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:14,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313637010] [2020-12-22 08:32:14,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:14,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:32:14,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847713077] [2020-12-22 08:32:14,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:32:14,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:14,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:32:14,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:14,548 INFO L87 Difference]: Start difference. First operand 52199 states and 77398 transitions. Second operand 3 states. [2020-12-22 08:32:20,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:20,410 INFO L93 Difference]: Finished difference Result 139372 states and 206874 transitions. [2020-12-22 08:32:20,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:32:20,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-12-22 08:32:20,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:20,549 INFO L225 Difference]: With dead ends: 139372 [2020-12-22 08:32:20,550 INFO L226 Difference]: Without dead ends: 93546 [2020-12-22 08:32:20,591 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 08:32:20,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93546 states. [2020-12-22 08:32:26,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93546 to 80872. [2020-12-22 08:32:26,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80872 states. [2020-12-22 08:32:26,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80872 states to 80872 states and 119016 transitions. [2020-12-22 08:32:26,633 INFO L78 Accepts]: Start accepts. Automaton has 80872 states and 119016 transitions. Word has length 96 [2020-12-22 08:32:26,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:26,633 INFO L481 AbstractCegarLoop]: Abstraction has 80872 states and 119016 transitions. [2020-12-22 08:32:26,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:32:26,634 INFO L276 IsEmpty]: Start isEmpty. Operand 80872 states and 119016 transitions. [2020-12-22 08:32:26,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 08:32:26,665 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:26,665 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 08:32:26,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:32:26,665 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:26,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:26,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1725865046, now seen corresponding path program 1 times [2020-12-22 08:32:26,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:26,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30314471] [2020-12-22 08:32:26,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:26,918 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:26,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30314471] [2020-12-22 08:32:26,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174542076] [2020-12-22 08:32:26,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 08:32:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:27,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 08:32:27,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:32:27,416 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 08:32:27,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:32:27,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-22 08:32:27,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065427388] [2020-12-22 08:32:27,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 08:32:27,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:27,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 08:32:27,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:32:27,419 INFO L87 Difference]: Start difference. First operand 80872 states and 119016 transitions. Second operand 12 states. [2020-12-22 08:32:49,250 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2020-12-22 08:33:01,835 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 20 [2020-12-22 08:33:12,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:12,362 INFO L93 Difference]: Finished difference Result 505344 states and 735348 transitions. [2020-12-22 08:33:12,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-12-22 08:33:12,362 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-12-22 08:33:12,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:13,616 INFO L225 Difference]: With dead ends: 505344 [2020-12-22 08:33:13,617 INFO L226 Difference]: Without dead ends: 430782 [2020-12-22 08:33:13,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3475 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1677, Invalid=7065, Unknown=0, NotChecked=0, Total=8742 [2020-12-22 08:33:14,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430782 states. [2020-12-22 08:33:34,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430782 to 195408. [2020-12-22 08:33:34,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195408 states. [2020-12-22 08:33:34,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195408 states to 195408 states and 284004 transitions. [2020-12-22 08:33:34,832 INFO L78 Accepts]: Start accepts. Automaton has 195408 states and 284004 transitions. Word has length 96 [2020-12-22 08:33:34,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:34,832 INFO L481 AbstractCegarLoop]: Abstraction has 195408 states and 284004 transitions. [2020-12-22 08:33:34,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 08:33:34,833 INFO L276 IsEmpty]: Start isEmpty. Operand 195408 states and 284004 transitions. [2020-12-22 08:33:34,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 08:33:34,886 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:34,887 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:35,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 08:33:35,101 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:35,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:35,103 INFO L82 PathProgramCache]: Analyzing trace with hash -2035229118, now seen corresponding path program 1 times [2020-12-22 08:33:35,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:35,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528094832] [2020-12-22 08:33:35,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:35,212 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 08:33:35,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528094832] [2020-12-22 08:33:35,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:35,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:33:35,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062418568] [2020-12-22 08:33:35,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:33:35,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:35,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:33:35,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:33:35,220 INFO L87 Difference]: Start difference. First operand 195408 states and 284004 transitions. Second operand 6 states. [2020-12-22 08:34:25,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:25,685 INFO L93 Difference]: Finished difference Result 749062 states and 1085467 transitions. [2020-12-22 08:34:25,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:34:25,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2020-12-22 08:34:25,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:27,111 INFO L225 Difference]: With dead ends: 749062 [2020-12-22 08:34:27,112 INFO L226 Difference]: Without dead ends: 553692 [2020-12-22 08:34:27,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:34:27,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553692 states.