/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.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:27:35,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:27:35,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:27:35,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:27:35,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:27:35,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:27:35,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:27:35,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:27:35,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:27:35,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:27:35,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:27:35,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:27:35,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:27:35,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:27:35,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:27:35,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:27:35,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:27:35,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:27:35,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:27:35,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:27:35,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:27:35,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:27:35,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:27:35,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:27:35,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:27:35,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:27:35,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:27:35,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:27:35,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:27:35,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:27:35,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:27:35,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:27:35,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:27:35,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:27:35,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:27:35,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:27:35,406 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:27:35,460 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:27:35,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:27:35,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:27:35,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:27:35,463 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:27:35,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:27:35,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:27:35,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:27:35,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:27:35,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:27:35,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:27:35,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:27:35,465 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:27:35,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:27:35,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:27:35,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:27:35,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:27:35,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:27:35,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:27:35,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:27:35,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:27:35,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:27:35,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:27:35,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:27:35,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:27:35,468 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:27:35,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:27:35,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:27:35,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:27:35,889 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:27:35,890 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:27:35,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-12-22 08:27:35,978 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/147db6622/5f4b95040e0d4f9b801981a6b6adb178/FLAG5af2361f8 [2020-12-22 08:27:36,651 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:27:36,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-12-22 08:27:36,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/147db6622/5f4b95040e0d4f9b801981a6b6adb178/FLAG5af2361f8 [2020-12-22 08:27:36,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/147db6622/5f4b95040e0d4f9b801981a6b6adb178 [2020-12-22 08:27:36,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:27:36,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:27:36,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:27:36,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:27:36,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:27:36,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:27:36" (1/1) ... [2020-12-22 08:27:36,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e29afb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:36, skipping insertion in model container [2020-12-22 08:27:36,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:27:36" (1/1) ... [2020-12-22 08:27:36,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:27:36,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:27:37,277 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.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[8205,8218] [2020-12-22 08:27:37,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:27:37,380 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:27:37,466 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.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[8205,8218] [2020-12-22 08:27:37,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:27:37,561 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:27:37,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:37 WrapperNode [2020-12-22 08:27:37,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:27:37,563 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:27:37,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:27:37,563 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:27:37,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:37" (1/1) ... [2020-12-22 08:27:37,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:37" (1/1) ... [2020-12-22 08:27:37,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:27:37,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:27:37,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:27:37,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:27:37,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:37" (1/1) ... [2020-12-22 08:27:37,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:37" (1/1) ... [2020-12-22 08:27:37,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:37" (1/1) ... [2020-12-22 08:27:37,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:37" (1/1) ... [2020-12-22 08:27:37,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:37" (1/1) ... [2020-12-22 08:27:37,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:37" (1/1) ... [2020-12-22 08:27:37,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:37" (1/1) ... [2020-12-22 08:27:37,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:27:37,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:27:37,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:27:37,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:27:37,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:37" (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 08:27:37,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:27:37,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:27:37,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:27:37,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:27:39,099 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:27:39,100 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:27:39,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:27:39 BoogieIcfgContainer [2020-12-22 08:27:39,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:27:39,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:27:39,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:27:39,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:27:39,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:27:36" (1/3) ... [2020-12-22 08:27:39,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788751b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:27:39, skipping insertion in model container [2020-12-22 08:27:39,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:37" (2/3) ... [2020-12-22 08:27:39,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788751b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:27:39, skipping insertion in model container [2020-12-22 08:27:39,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:27:39" (3/3) ... [2020-12-22 08:27:39,113 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-12-22 08:27:39,120 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:27:39,126 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:27:39,147 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:27:39,198 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:27:39,198 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:27:39,198 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:27:39,198 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:27:39,199 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:27:39,199 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:27:39,199 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:27:39,199 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:27:39,221 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2020-12-22 08:27:39,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:27:39,233 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:39,234 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] [2020-12-22 08:27:39,234 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:39,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:39,241 INFO L82 PathProgramCache]: Analyzing trace with hash -981857485, now seen corresponding path program 1 times [2020-12-22 08:27:39,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:39,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693738885] [2020-12-22 08:27:39,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:39,790 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 08:27:39,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693738885] [2020-12-22 08:27:39,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:39,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:27:39,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826181896] [2020-12-22 08:27:39,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:27:39,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:39,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:27:39,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:27:39,819 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2020-12-22 08:27:40,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:40,019 INFO L93 Difference]: Finished difference Result 437 states and 720 transitions. [2020-12-22 08:27:40,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:27:40,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 08:27:40,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:40,065 INFO L225 Difference]: With dead ends: 437 [2020-12-22 08:27:40,065 INFO L226 Difference]: Without dead ends: 329 [2020-12-22 08:27:40,077 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 08:27:40,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-12-22 08:27:40,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 327. [2020-12-22 08:27:40,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-12-22 08:27:40,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 489 transitions. [2020-12-22 08:27:40,212 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 489 transitions. Word has length 81 [2020-12-22 08:27:40,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:40,214 INFO L481 AbstractCegarLoop]: Abstraction has 327 states and 489 transitions. [2020-12-22 08:27:40,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:27:40,214 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 489 transitions. [2020-12-22 08:27:40,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:27:40,223 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:40,224 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] [2020-12-22 08:27:40,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:27:40,225 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:40,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:40,227 INFO L82 PathProgramCache]: Analyzing trace with hash -651776507, now seen corresponding path program 1 times [2020-12-22 08:27:40,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:40,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885124541] [2020-12-22 08:27:40,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:40,617 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 08:27:40,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885124541] [2020-12-22 08:27:40,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:40,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:27:40,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428100027] [2020-12-22 08:27:40,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:27:40,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:40,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:27:40,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:27:40,622 INFO L87 Difference]: Start difference. First operand 327 states and 489 transitions. Second operand 7 states. [2020-12-22 08:27:41,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:41,064 INFO L93 Difference]: Finished difference Result 1413 states and 2181 transitions. [2020-12-22 08:27:41,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:27:41,064 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-12-22 08:27:41,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:41,073 INFO L225 Difference]: With dead ends: 1413 [2020-12-22 08:27:41,073 INFO L226 Difference]: Without dead ends: 1167 [2020-12-22 08:27:41,076 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 08:27:41,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2020-12-22 08:27:41,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1159. [2020-12-22 08:27:41,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1159 states. [2020-12-22 08:27:41,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1782 transitions. [2020-12-22 08:27:41,155 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1782 transitions. Word has length 82 [2020-12-22 08:27:41,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:41,155 INFO L481 AbstractCegarLoop]: Abstraction has 1159 states and 1782 transitions. [2020-12-22 08:27:41,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:27:41,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1782 transitions. [2020-12-22 08:27:41,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 08:27:41,160 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:41,160 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] [2020-12-22 08:27:41,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:27:41,160 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:41,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:41,161 INFO L82 PathProgramCache]: Analyzing trace with hash 994859382, now seen corresponding path program 1 times [2020-12-22 08:27:41,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:41,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132901368] [2020-12-22 08:27:41,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:41,329 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 08:27:41,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132901368] [2020-12-22 08:27:41,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:41,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:27:41,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921964045] [2020-12-22 08:27:41,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:27:41,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:41,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:27:41,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:27:41,332 INFO L87 Difference]: Start difference. First operand 1159 states and 1782 transitions. Second operand 6 states. [2020-12-22 08:27:42,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:42,011 INFO L93 Difference]: Finished difference Result 3912 states and 6097 transitions. [2020-12-22 08:27:42,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:27:42,012 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-12-22 08:27:42,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:42,028 INFO L225 Difference]: With dead ends: 3912 [2020-12-22 08:27:42,029 INFO L226 Difference]: Without dead ends: 2796 [2020-12-22 08:27:42,032 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 08:27:42,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2796 states. [2020-12-22 08:27:42,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2796 to 2792. [2020-12-22 08:27:42,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2792 states. [2020-12-22 08:27:42,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2792 states to 2792 states and 4340 transitions. [2020-12-22 08:27:42,236 INFO L78 Accepts]: Start accepts. Automaton has 2792 states and 4340 transitions. Word has length 83 [2020-12-22 08:27:42,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:42,246 INFO L481 AbstractCegarLoop]: Abstraction has 2792 states and 4340 transitions. [2020-12-22 08:27:42,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:27:42,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2792 states and 4340 transitions. [2020-12-22 08:27:42,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 08:27:42,253 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:42,254 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] [2020-12-22 08:27:42,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:27:42,254 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:42,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:42,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1568078791, now seen corresponding path program 1 times [2020-12-22 08:27:42,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:42,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093072552] [2020-12-22 08:27:42,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:42,427 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 08:27:42,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093072552] [2020-12-22 08:27:42,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:42,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:27:42,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773912083] [2020-12-22 08:27:42,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:27:42,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:42,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:27:42,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:27:42,436 INFO L87 Difference]: Start difference. First operand 2792 states and 4340 transitions. Second operand 5 states. [2020-12-22 08:27:43,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:43,203 INFO L93 Difference]: Finished difference Result 7918 states and 12370 transitions. [2020-12-22 08:27:43,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:27:43,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-12-22 08:27:43,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:43,233 INFO L225 Difference]: With dead ends: 7918 [2020-12-22 08:27:43,233 INFO L226 Difference]: Without dead ends: 5185 [2020-12-22 08:27:43,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:27:43,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5185 states. [2020-12-22 08:27:43,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5185 to 5183. [2020-12-22 08:27:43,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5183 states. [2020-12-22 08:27:43,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5183 states to 5183 states and 8048 transitions. [2020-12-22 08:27:43,670 INFO L78 Accepts]: Start accepts. Automaton has 5183 states and 8048 transitions. Word has length 83 [2020-12-22 08:27:43,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:43,670 INFO L481 AbstractCegarLoop]: Abstraction has 5183 states and 8048 transitions. [2020-12-22 08:27:43,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:27:43,670 INFO L276 IsEmpty]: Start isEmpty. Operand 5183 states and 8048 transitions. [2020-12-22 08:27:43,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 08:27:43,676 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:43,677 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] [2020-12-22 08:27:43,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:27:43,677 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:43,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:43,678 INFO L82 PathProgramCache]: Analyzing trace with hash -2053901352, now seen corresponding path program 1 times [2020-12-22 08:27:43,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:43,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252212448] [2020-12-22 08:27:43,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:43,829 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 08:27:43,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252212448] [2020-12-22 08:27:43,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:43,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:27:43,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285063120] [2020-12-22 08:27:43,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:27:43,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:43,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:27:43,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:27:43,832 INFO L87 Difference]: Start difference. First operand 5183 states and 8048 transitions. Second operand 6 states. [2020-12-22 08:27:45,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:45,027 INFO L93 Difference]: Finished difference Result 19106 states and 29710 transitions. [2020-12-22 08:27:45,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:27:45,028 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-12-22 08:27:45,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:45,100 INFO L225 Difference]: With dead ends: 19106 [2020-12-22 08:27:45,100 INFO L226 Difference]: Without dead ends: 14005 [2020-12-22 08:27:45,111 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 08:27:45,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14005 states. [2020-12-22 08:27:46,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14005 to 14001. [2020-12-22 08:27:46,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14001 states. [2020-12-22 08:27:46,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14001 states to 14001 states and 21674 transitions. [2020-12-22 08:27:46,133 INFO L78 Accepts]: Start accepts. Automaton has 14001 states and 21674 transitions. Word has length 83 [2020-12-22 08:27:46,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:46,133 INFO L481 AbstractCegarLoop]: Abstraction has 14001 states and 21674 transitions. [2020-12-22 08:27:46,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:27:46,133 INFO L276 IsEmpty]: Start isEmpty. Operand 14001 states and 21674 transitions. [2020-12-22 08:27:46,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 08:27:46,141 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:46,141 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] [2020-12-22 08:27:46,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:27:46,142 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:46,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:46,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1112064425, now seen corresponding path program 1 times [2020-12-22 08:27:46,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:46,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298113688] [2020-12-22 08:27:46,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:46,353 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 08:27:46,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298113688] [2020-12-22 08:27:46,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:46,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:27:46,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135982214] [2020-12-22 08:27:46,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:27:46,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:46,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:27:46,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:27:46,358 INFO L87 Difference]: Start difference. First operand 14001 states and 21674 transitions. Second operand 5 states. [2020-12-22 08:27:48,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:48,143 INFO L93 Difference]: Finished difference Result 40746 states and 63120 transitions. [2020-12-22 08:27:48,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:27:48,144 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-12-22 08:27:48,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:48,228 INFO L225 Difference]: With dead ends: 40746 [2020-12-22 08:27:48,229 INFO L226 Difference]: Without dead ends: 26857 [2020-12-22 08:27:48,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:27:48,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26857 states. [2020-12-22 08:27:49,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26857 to 26855. [2020-12-22 08:27:49,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26855 states. [2020-12-22 08:27:49,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26855 states to 26855 states and 41373 transitions. [2020-12-22 08:27:49,724 INFO L78 Accepts]: Start accepts. Automaton has 26855 states and 41373 transitions. Word has length 83 [2020-12-22 08:27:49,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:49,725 INFO L481 AbstractCegarLoop]: Abstraction has 26855 states and 41373 transitions. [2020-12-22 08:27:49,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:27:49,725 INFO L276 IsEmpty]: Start isEmpty. Operand 26855 states and 41373 transitions. [2020-12-22 08:27:49,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 08:27:49,735 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:49,735 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] [2020-12-22 08:27:49,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:27:49,736 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:49,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:49,736 INFO L82 PathProgramCache]: Analyzing trace with hash 340452666, now seen corresponding path program 1 times [2020-12-22 08:27:49,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:49,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338557395] [2020-12-22 08:27:49,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:49,816 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 08:27:49,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338557395] [2020-12-22 08:27:49,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:49,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:27:49,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969801503] [2020-12-22 08:27:49,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:27:49,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:49,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:27:49,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:27:49,819 INFO L87 Difference]: Start difference. First operand 26855 states and 41373 transitions. Second operand 5 states. [2020-12-22 08:27:53,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:53,014 INFO L93 Difference]: Finished difference Result 79118 states and 122024 transitions. [2020-12-22 08:27:53,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:27:53,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-12-22 08:27:53,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:53,153 INFO L225 Difference]: With dead ends: 79118 [2020-12-22 08:27:53,153 INFO L226 Difference]: Without dead ends: 52409 [2020-12-22 08:27:53,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:27:53,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52409 states. [2020-12-22 08:27:56,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52409 to 52407. [2020-12-22 08:27:56,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52407 states. [2020-12-22 08:27:56,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52407 states to 52407 states and 80488 transitions. [2020-12-22 08:27:56,342 INFO L78 Accepts]: Start accepts. Automaton has 52407 states and 80488 transitions. Word has length 83 [2020-12-22 08:27:56,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:56,342 INFO L481 AbstractCegarLoop]: Abstraction has 52407 states and 80488 transitions. [2020-12-22 08:27:56,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:27:56,342 INFO L276 IsEmpty]: Start isEmpty. Operand 52407 states and 80488 transitions. [2020-12-22 08:27:56,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 08:27:56,354 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:56,354 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] [2020-12-22 08:27:56,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:27:56,354 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:56,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:56,355 INFO L82 PathProgramCache]: Analyzing trace with hash 31378129, now seen corresponding path program 1 times [2020-12-22 08:27:56,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:56,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261115667] [2020-12-22 08:27:56,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:56,453 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 08:27:56,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261115667] [2020-12-22 08:27:56,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:56,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:27:56,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398615364] [2020-12-22 08:27:56,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:27:56,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:56,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:27:56,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:27:56,456 INFO L87 Difference]: Start difference. First operand 52407 states and 80488 transitions. Second operand 5 states. [2020-12-22 08:28:01,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:28:01,395 INFO L93 Difference]: Finished difference Result 99073 states and 151457 transitions. [2020-12-22 08:28:01,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:28:01,395 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-12-22 08:28:01,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:28:01,593 INFO L225 Difference]: With dead ends: 99073 [2020-12-22 08:28:01,593 INFO L226 Difference]: Without dead ends: 99071 [2020-12-22 08:28:01,620 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 08:28:01,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99071 states. [2020-12-22 08:28:05,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99071 to 53079. [2020-12-22 08:28:05,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53079 states. [2020-12-22 08:28:05,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53079 states to 53079 states and 81160 transitions. [2020-12-22 08:28:05,311 INFO L78 Accepts]: Start accepts. Automaton has 53079 states and 81160 transitions. Word has length 84 [2020-12-22 08:28:05,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:28:05,311 INFO L481 AbstractCegarLoop]: Abstraction has 53079 states and 81160 transitions. [2020-12-22 08:28:05,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:28:05,312 INFO L276 IsEmpty]: Start isEmpty. Operand 53079 states and 81160 transitions. [2020-12-22 08:28:05,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 08:28:05,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:28:05,329 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] [2020-12-22 08:28:05,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:28:05,330 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:28:05,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:28:05,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1251175856, now seen corresponding path program 1 times [2020-12-22 08:28:05,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:28:05,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085453242] [2020-12-22 08:28:05,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:28:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:28:05,614 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 08:28:05,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085453242] [2020-12-22 08:28:05,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:28:05,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:28:05,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892874882] [2020-12-22 08:28:05,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:28:05,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:28:05,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:28:05,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:28:05,617 INFO L87 Difference]: Start difference. First operand 53079 states and 81160 transitions. Second operand 10 states. [2020-12-22 08:28:27,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:28:27,356 INFO L93 Difference]: Finished difference Result 359465 states and 548898 transitions. [2020-12-22 08:28:27,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 08:28:27,356 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-12-22 08:28:27,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:28:28,218 INFO L225 Difference]: With dead ends: 359465 [2020-12-22 08:28:28,218 INFO L226 Difference]: Without dead ends: 307225 [2020-12-22 08:28:28,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 08:28:28,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307225 states. [2020-12-22 08:28:34,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307225 to 53173. [2020-12-22 08:28:34,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53173 states. [2020-12-22 08:28:34,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53173 states to 53173 states and 81261 transitions. [2020-12-22 08:28:34,878 INFO L78 Accepts]: Start accepts. Automaton has 53173 states and 81261 transitions. Word has length 85 [2020-12-22 08:28:34,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:28:34,878 INFO L481 AbstractCegarLoop]: Abstraction has 53173 states and 81261 transitions. [2020-12-22 08:28:34,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:28:34,878 INFO L276 IsEmpty]: Start isEmpty. Operand 53173 states and 81261 transitions. [2020-12-22 08:28:34,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 08:28:34,891 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:28:34,891 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] [2020-12-22 08:28:34,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:28:34,891 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:28:34,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:28:34,892 INFO L82 PathProgramCache]: Analyzing trace with hash 192213392, now seen corresponding path program 1 times [2020-12-22 08:28:34,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:28:34,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947754145] [2020-12-22 08:28:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:28:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:28:35,117 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 08:28:35,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947754145] [2020-12-22 08:28:35,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:28:35,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:28:35,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636665187] [2020-12-22 08:28:35,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:28:35,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:28:35,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:28:35,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:28:35,120 INFO L87 Difference]: Start difference. First operand 53173 states and 81261 transitions. Second operand 10 states. [2020-12-22 08:28:57,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:28:57,525 INFO L93 Difference]: Finished difference Result 262625 states and 397668 transitions. [2020-12-22 08:28:57,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 08:28:57,526 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-12-22 08:28:57,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:28:58,191 INFO L225 Difference]: With dead ends: 262625 [2020-12-22 08:28:58,191 INFO L226 Difference]: Without dead ends: 221957 [2020-12-22 08:28:58,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=219, Invalid=593, Unknown=0, NotChecked=0, Total=812 [2020-12-22 08:28:58,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221957 states. [2020-12-22 08:29:05,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221957 to 53521. [2020-12-22 08:29:05,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53521 states. [2020-12-22 08:29:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53521 states to 53521 states and 81702 transitions. [2020-12-22 08:29:05,179 INFO L78 Accepts]: Start accepts. Automaton has 53521 states and 81702 transitions. Word has length 85 [2020-12-22 08:29:05,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:05,179 INFO L481 AbstractCegarLoop]: Abstraction has 53521 states and 81702 transitions. [2020-12-22 08:29:05,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:29:05,179 INFO L276 IsEmpty]: Start isEmpty. Operand 53521 states and 81702 transitions. [2020-12-22 08:29:05,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 08:29:05,192 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:05,193 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] [2020-12-22 08:29:05,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:29:05,193 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:05,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:05,194 INFO L82 PathProgramCache]: Analyzing trace with hash -415777424, now seen corresponding path program 1 times [2020-12-22 08:29:05,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:05,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960904265] [2020-12-22 08:29:05,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:05,457 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 08:29:05,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960904265] [2020-12-22 08:29:05,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:05,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:29:05,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27920448] [2020-12-22 08:29:05,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:29:05,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:05,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:29:05,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:29:05,462 INFO L87 Difference]: Start difference. First operand 53521 states and 81702 transitions. Second operand 10 states. [2020-12-22 08:29:05,672 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2020-12-22 08:29:39,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:39,022 INFO L93 Difference]: Finished difference Result 312372 states and 476626 transitions. [2020-12-22 08:29:39,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 08:29:39,023 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-12-22 08:29:39,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:39,799 INFO L225 Difference]: With dead ends: 312372 [2020-12-22 08:29:39,799 INFO L226 Difference]: Without dead ends: 280588 [2020-12-22 08:29:39,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 08:29:40,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280588 states. [2020-12-22 08:29:48,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280588 to 54274. [2020-12-22 08:29:48,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54274 states. [2020-12-22 08:29:48,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54274 states to 54274 states and 82664 transitions. [2020-12-22 08:29:48,233 INFO L78 Accepts]: Start accepts. Automaton has 54274 states and 82664 transitions. Word has length 85 [2020-12-22 08:29:48,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:48,233 INFO L481 AbstractCegarLoop]: Abstraction has 54274 states and 82664 transitions. [2020-12-22 08:29:48,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:29:48,233 INFO L276 IsEmpty]: Start isEmpty. Operand 54274 states and 82664 transitions. [2020-12-22 08:29:48,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 08:29:48,247 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:48,247 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] [2020-12-22 08:29:48,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:29:48,247 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:48,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:48,248 INFO L82 PathProgramCache]: Analyzing trace with hash -777268912, now seen corresponding path program 1 times [2020-12-22 08:29:48,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:48,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176618869] [2020-12-22 08:29:48,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:48,621 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 08:29:48,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176618869] [2020-12-22 08:29:48,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:48,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:29:48,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162358093] [2020-12-22 08:29:48,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:29:48,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:48,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:29:48,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:29:48,624 INFO L87 Difference]: Start difference. First operand 54274 states and 82664 transitions. Second operand 10 states. [2020-12-22 08:30:13,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:13,613 INFO L93 Difference]: Finished difference Result 179710 states and 270832 transitions. [2020-12-22 08:30:13,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 08:30:13,614 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-12-22 08:30:13,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:13,886 INFO L225 Difference]: With dead ends: 179710 [2020-12-22 08:30:13,887 INFO L226 Difference]: Without dead ends: 161276 [2020-12-22 08:30:13,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2020-12-22 08:30:14,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161276 states. [2020-12-22 08:30:22,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161276 to 55522. [2020-12-22 08:30:22,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55522 states. [2020-12-22 08:30:22,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55522 states to 55522 states and 84398 transitions. [2020-12-22 08:30:22,772 INFO L78 Accepts]: Start accepts. Automaton has 55522 states and 84398 transitions. Word has length 85 [2020-12-22 08:30:22,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:30:22,772 INFO L481 AbstractCegarLoop]: Abstraction has 55522 states and 84398 transitions. [2020-12-22 08:30:22,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:30:22,772 INFO L276 IsEmpty]: Start isEmpty. Operand 55522 states and 84398 transitions. [2020-12-22 08:30:22,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 08:30:22,788 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:22,789 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] [2020-12-22 08:30:22,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:30:22,789 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:22,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:22,789 INFO L82 PathProgramCache]: Analyzing trace with hash -56546000, now seen corresponding path program 1 times [2020-12-22 08:30:22,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:22,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100449158] [2020-12-22 08:30:22,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:30:23,014 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 08:30:23,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100449158] [2020-12-22 08:30:23,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:30:23,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:30:23,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927287010] [2020-12-22 08:30:23,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:30:23,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:30:23,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:30:23,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:30:23,017 INFO L87 Difference]: Start difference. First operand 55522 states and 84398 transitions. Second operand 10 states. [2020-12-22 08:31:05,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:05,679 INFO L93 Difference]: Finished difference Result 286148 states and 434403 transitions. [2020-12-22 08:31:05,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:31:05,679 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-12-22 08:31:05,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:06,435 INFO L225 Difference]: With dead ends: 286148 [2020-12-22 08:31:06,435 INFO L226 Difference]: Without dead ends: 279388 [2020-12-22 08:31:06,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=236, Invalid=694, Unknown=0, NotChecked=0, Total=930 [2020-12-22 08:31:06,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279388 states. [2020-12-22 08:31:16,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279388 to 55236. [2020-12-22 08:31:16,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55236 states. [2020-12-22 08:31:16,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55236 states to 55236 states and 83978 transitions. [2020-12-22 08:31:16,947 INFO L78 Accepts]: Start accepts. Automaton has 55236 states and 83978 transitions. Word has length 85 [2020-12-22 08:31:16,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:16,947 INFO L481 AbstractCegarLoop]: Abstraction has 55236 states and 83978 transitions. [2020-12-22 08:31:16,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:31:16,948 INFO L276 IsEmpty]: Start isEmpty. Operand 55236 states and 83978 transitions. [2020-12-22 08:31:16,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 08:31:16,962 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:16,962 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] [2020-12-22 08:31:16,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:31:16,962 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:16,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:16,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1761654198, now seen corresponding path program 1 times [2020-12-22 08:31:16,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:16,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562726913] [2020-12-22 08:31:16,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:17,084 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 08:31:17,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562726913] [2020-12-22 08:31:17,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:17,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:31:17,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211451202] [2020-12-22 08:31:17,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:31:17,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:17,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:31:17,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:31:17,087 INFO L87 Difference]: Start difference. First operand 55236 states and 83978 transitions. Second operand 4 states. [2020-12-22 08:31:33,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:33,024 INFO L93 Difference]: Finished difference Result 151564 states and 230392 transitions. [2020-12-22 08:31:33,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:31:33,025 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-12-22 08:31:33,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:33,337 INFO L225 Difference]: With dead ends: 151564 [2020-12-22 08:31:33,337 INFO L226 Difference]: Without dead ends: 99786 [2020-12-22 08:31:33,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:31:33,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99786 states.