/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+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:27:21,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:27:21,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:27:21,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:27:21,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:27:21,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:27:21,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:27:21,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:27:21,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:27:21,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:27:21,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:27:21,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:27:21,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:27:21,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:27:21,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:27:21,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:27:21,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:27:21,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:27:21,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:27:21,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:27:21,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:27:21,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:27:21,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:27:21,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:27:21,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:27:21,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:27:21,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:27:21,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:27:21,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:27:21,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:27:21,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:27:21,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:27:21,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:27:21,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:27:21,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:27:21,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:27:21,827 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:27:21,881 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:27:21,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:27:21,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:27:21,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:27:21,883 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:27:21,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:27:21,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:27:21,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:27:21,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:27:21,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:27:21,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:27:21,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:27:21,885 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:27:21,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:27:21,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:27:21,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:27:21,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:27:21,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:27:21,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:27:21,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:27:21,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:27:21,887 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:27:21,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:27:21,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:27:21,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:27:21,888 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:27:22,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:27:22,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:27:22,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:27:22,293 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:27:22,294 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:27:22,295 INFO L432 ainManager$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+cfa-reducer.c [2020-12-22 08:27:22,384 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faa0e543d/9d048be5906a44abb89e05611bc870e8/FLAG5116e7715 [2020-12-22 08:27:23,050 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:27:23,051 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+cfa-reducer.c [2020-12-22 08:27:23,063 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faa0e543d/9d048be5906a44abb89e05611bc870e8/FLAG5116e7715 [2020-12-22 08:27:23,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faa0e543d/9d048be5906a44abb89e05611bc870e8 [2020-12-22 08:27:23,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:27:23,381 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:27:23,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:27:23,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:27:23,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:27:23,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:27:23" (1/1) ... [2020-12-22 08:27:23,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27406b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:23, skipping insertion in model container [2020-12-22 08:27:23,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:27:23" (1/1) ... [2020-12-22 08:27:23,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:27:23,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:27:23,715 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+cfa-reducer.c[5918,5931] [2020-12-22 08:27:23,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:27:23,838 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:27:23,889 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+cfa-reducer.c[5918,5931] [2020-12-22 08:27:23,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:27:23,943 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:27:23,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:23 WrapperNode [2020-12-22 08:27:23,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:27:23,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:27:23,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:27:23,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:27:23,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:23" (1/1) ... [2020-12-22 08:27:23,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:23" (1/1) ... [2020-12-22 08:27:24,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:27:24,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:27:24,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:27:24,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:27:24,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:23" (1/1) ... [2020-12-22 08:27:24,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:23" (1/1) ... [2020-12-22 08:27:24,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:23" (1/1) ... [2020-12-22 08:27:24,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:23" (1/1) ... [2020-12-22 08:27:24,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:23" (1/1) ... [2020-12-22 08:27:24,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:23" (1/1) ... [2020-12-22 08:27:24,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:23" (1/1) ... [2020-12-22 08:27:24,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:27:24,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:27:24,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:27:24,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:27:24,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:23" (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 08:27:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:27:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:27:24,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:27:24,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:27:25,345 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:27:25,345 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:27:25,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:27:25 BoogieIcfgContainer [2020-12-22 08:27:25,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:27:25,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:27:25,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:27:25,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:27:25,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:27:23" (1/3) ... [2020-12-22 08:27:25,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50dc5ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:27:25, skipping insertion in model container [2020-12-22 08:27:25,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:23" (2/3) ... [2020-12-22 08:27:25,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50dc5ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:27:25, skipping insertion in model container [2020-12-22 08:27:25,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:27:25" (3/3) ... [2020-12-22 08:27:25,357 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-12-22 08:27:25,364 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:27:25,369 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:27:25,388 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:27:25,418 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:27:25,418 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:27:25,419 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:27:25,419 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:27:25,419 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:27:25,419 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:27:25,419 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:27:25,420 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:27:25,439 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states. [2020-12-22 08:27:25,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 08:27:25,449 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:25,450 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] [2020-12-22 08:27:25,451 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:25,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:25,457 INFO L82 PathProgramCache]: Analyzing trace with hash -793823884, now seen corresponding path program 1 times [2020-12-22 08:27:25,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:25,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010903115] [2020-12-22 08:27:25,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:25,940 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 08:27:25,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010903115] [2020-12-22 08:27:25,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:25,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:27:25,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589193717] [2020-12-22 08:27:25,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:27:25,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:25,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:27:25,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:27:25,965 INFO L87 Difference]: Start difference. First operand 136 states. Second operand 3 states. [2020-12-22 08:27:26,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:26,051 INFO L93 Difference]: Finished difference Result 322 states and 522 transitions. [2020-12-22 08:27:26,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:27:26,054 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-12-22 08:27:26,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:26,089 INFO L225 Difference]: With dead ends: 322 [2020-12-22 08:27:26,089 INFO L226 Difference]: Without dead ends: 215 [2020-12-22 08:27:26,093 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 08:27:26,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-12-22 08:27:26,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 213. [2020-12-22 08:27:26,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-12-22 08:27:26,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 319 transitions. [2020-12-22 08:27:26,160 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 319 transitions. Word has length 60 [2020-12-22 08:27:26,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:26,161 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 319 transitions. [2020-12-22 08:27:26,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:27:26,161 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 319 transitions. [2020-12-22 08:27:26,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 08:27:26,164 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:26,164 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 08:27:26,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:27:26,165 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:26,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:26,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1200786689, now seen corresponding path program 1 times [2020-12-22 08:27:26,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:26,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563832506] [2020-12-22 08:27:26,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:26,317 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 08:27:26,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563832506] [2020-12-22 08:27:26,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:26,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:27:26,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745538022] [2020-12-22 08:27:26,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:27:26,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:26,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:27:26,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:27:26,327 INFO L87 Difference]: Start difference. First operand 213 states and 319 transitions. Second operand 3 states. [2020-12-22 08:27:26,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:26,437 INFO L93 Difference]: Finished difference Result 537 states and 835 transitions. [2020-12-22 08:27:26,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:27:26,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 08:27:26,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:26,442 INFO L225 Difference]: With dead ends: 537 [2020-12-22 08:27:26,442 INFO L226 Difference]: Without dead ends: 359 [2020-12-22 08:27:26,444 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 08:27:26,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-12-22 08:27:26,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 357. [2020-12-22 08:27:26,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-12-22 08:27:26,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 548 transitions. [2020-12-22 08:27:26,512 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 548 transitions. Word has length 61 [2020-12-22 08:27:26,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:26,513 INFO L481 AbstractCegarLoop]: Abstraction has 357 states and 548 transitions. [2020-12-22 08:27:26,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:27:26,513 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 548 transitions. [2020-12-22 08:27:26,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 08:27:26,519 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:26,519 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 08:27:26,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:27:26,520 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:26,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:26,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1872640227, now seen corresponding path program 1 times [2020-12-22 08:27:26,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:26,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301965731] [2020-12-22 08:27:26,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:26,665 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 08:27:26,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301965731] [2020-12-22 08:27:26,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:26,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:27:26,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816066974] [2020-12-22 08:27:26,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:27:26,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:26,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:27:26,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:27:26,673 INFO L87 Difference]: Start difference. First operand 357 states and 548 transitions. Second operand 3 states. [2020-12-22 08:27:26,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:26,782 INFO L93 Difference]: Finished difference Result 937 states and 1470 transitions. [2020-12-22 08:27:26,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:27:26,783 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-22 08:27:26,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:26,789 INFO L225 Difference]: With dead ends: 937 [2020-12-22 08:27:26,789 INFO L226 Difference]: Without dead ends: 615 [2020-12-22 08:27:26,792 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 08:27:26,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2020-12-22 08:27:26,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 613. [2020-12-22 08:27:26,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-12-22 08:27:26,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 952 transitions. [2020-12-22 08:27:26,858 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 952 transitions. Word has length 62 [2020-12-22 08:27:26,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:26,859 INFO L481 AbstractCegarLoop]: Abstraction has 613 states and 952 transitions. [2020-12-22 08:27:26,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:27:26,859 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 952 transitions. [2020-12-22 08:27:26,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 08:27:26,862 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:26,862 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 08:27:26,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:27:26,862 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:26,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:26,863 INFO L82 PathProgramCache]: Analyzing trace with hash -562045070, now seen corresponding path program 1 times [2020-12-22 08:27:26,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:26,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090713169] [2020-12-22 08:27:26,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:26,977 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 08:27:26,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090713169] [2020-12-22 08:27:26,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:26,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:27:26,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642224640] [2020-12-22 08:27:26,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:27:26,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:26,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:27:26,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:27:26,984 INFO L87 Difference]: Start difference. First operand 613 states and 952 transitions. Second operand 3 states. [2020-12-22 08:27:27,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:27,104 INFO L93 Difference]: Finished difference Result 1641 states and 2578 transitions. [2020-12-22 08:27:27,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:27:27,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 08:27:27,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:27,116 INFO L225 Difference]: With dead ends: 1641 [2020-12-22 08:27:27,116 INFO L226 Difference]: Without dead ends: 1063 [2020-12-22 08:27:27,122 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 08:27:27,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2020-12-22 08:27:27,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1061. [2020-12-22 08:27:27,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1061 states. [2020-12-22 08:27:27,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1652 transitions. [2020-12-22 08:27:27,223 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1652 transitions. Word has length 63 [2020-12-22 08:27:27,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:27,226 INFO L481 AbstractCegarLoop]: Abstraction has 1061 states and 1652 transitions. [2020-12-22 08:27:27,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:27:27,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1652 transitions. [2020-12-22 08:27:27,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:27:27,237 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:27,238 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 08:27:27,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:27:27,239 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:27,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:27,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1925116710, now seen corresponding path program 1 times [2020-12-22 08:27:27,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:27,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550526175] [2020-12-22 08:27:27,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:27,360 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 08:27:27,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550526175] [2020-12-22 08:27:27,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:27,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:27:27,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946930350] [2020-12-22 08:27:27,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:27:27,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:27,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:27:27,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:27:27,366 INFO L87 Difference]: Start difference. First operand 1061 states and 1652 transitions. Second operand 3 states. [2020-12-22 08:27:27,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:27,494 INFO L93 Difference]: Finished difference Result 2857 states and 4470 transitions. [2020-12-22 08:27:27,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:27:27,495 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 08:27:27,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:27,507 INFO L225 Difference]: With dead ends: 2857 [2020-12-22 08:27:27,508 INFO L226 Difference]: Without dead ends: 1831 [2020-12-22 08:27:27,510 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 08:27:27,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2020-12-22 08:27:27,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1829. [2020-12-22 08:27:27,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1829 states. [2020-12-22 08:27:27,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2836 transitions. [2020-12-22 08:27:27,650 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2836 transitions. Word has length 64 [2020-12-22 08:27:27,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:27,650 INFO L481 AbstractCegarLoop]: Abstraction has 1829 states and 2836 transitions. [2020-12-22 08:27:27,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:27:27,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2836 transitions. [2020-12-22 08:27:27,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:27:27,654 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:27,654 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 08:27:27,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:27:27,655 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:27,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:27,655 INFO L82 PathProgramCache]: Analyzing trace with hash 210559993, now seen corresponding path program 1 times [2020-12-22 08:27:27,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:27,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820180540] [2020-12-22 08:27:27,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:27,898 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 08:27:27,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820180540] [2020-12-22 08:27:27,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:27,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:27:27,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745536125] [2020-12-22 08:27:27,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:27:27,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:27,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:27:27,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:27:27,901 INFO L87 Difference]: Start difference. First operand 1829 states and 2836 transitions. Second operand 7 states. [2020-12-22 08:27:28,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:28,625 INFO L93 Difference]: Finished difference Result 9439 states and 14601 transitions. [2020-12-22 08:27:28,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:27:28,626 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-12-22 08:27:28,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:28,668 INFO L225 Difference]: With dead ends: 9439 [2020-12-22 08:27:28,668 INFO L226 Difference]: Without dead ends: 7645 [2020-12-22 08:27:28,673 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 08:27:28,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7645 states. [2020-12-22 08:27:29,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7645 to 7637. [2020-12-22 08:27:29,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7637 states. [2020-12-22 08:27:29,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 11764 transitions. [2020-12-22 08:27:29,360 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 11764 transitions. Word has length 65 [2020-12-22 08:27:29,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:29,361 INFO L481 AbstractCegarLoop]: Abstraction has 7637 states and 11764 transitions. [2020-12-22 08:27:29,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:27:29,362 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 11764 transitions. [2020-12-22 08:27:29,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:27:29,363 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:29,363 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, 1] [2020-12-22 08:27:29,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:27:29,364 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:29,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:29,367 INFO L82 PathProgramCache]: Analyzing trace with hash 701566096, now seen corresponding path program 1 times [2020-12-22 08:27:29,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:29,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543727903] [2020-12-22 08:27:29,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:29,483 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 08:27:29,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543727903] [2020-12-22 08:27:29,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:29,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:27:29,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563711426] [2020-12-22 08:27:29,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:27:29,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:29,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:27:29,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:27:29,486 INFO L87 Difference]: Start difference. First operand 7637 states and 11764 transitions. Second operand 6 states. [2020-12-22 08:27:31,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:31,300 INFO L93 Difference]: Finished difference Result 28651 states and 44119 transitions. [2020-12-22 08:27:31,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:27:31,301 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-22 08:27:31,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:31,412 INFO L225 Difference]: With dead ends: 28651 [2020-12-22 08:27:31,412 INFO L226 Difference]: Without dead ends: 21049 [2020-12-22 08:27:31,432 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 08:27:31,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21049 states. [2020-12-22 08:27:33,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21049 to 21045. [2020-12-22 08:27:33,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21045 states. [2020-12-22 08:27:33,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21045 states to 21045 states and 32244 transitions. [2020-12-22 08:27:33,085 INFO L78 Accepts]: Start accepts. Automaton has 21045 states and 32244 transitions. Word has length 67 [2020-12-22 08:27:33,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:33,086 INFO L481 AbstractCegarLoop]: Abstraction has 21045 states and 32244 transitions. [2020-12-22 08:27:33,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:27:33,087 INFO L276 IsEmpty]: Start isEmpty. Operand 21045 states and 32244 transitions. [2020-12-22 08:27:33,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:27:33,088 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:33,088 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 08:27:33,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:27:33,089 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:33,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:33,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1975896309, now seen corresponding path program 1 times [2020-12-22 08:27:33,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:33,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19754686] [2020-12-22 08:27:33,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:33,338 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 08:27:33,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19754686] [2020-12-22 08:27:33,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:33,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:27:33,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599857176] [2020-12-22 08:27:33,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:27:33,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:33,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:27:33,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:27:33,342 INFO L87 Difference]: Start difference. First operand 21045 states and 32244 transitions. Second operand 7 states. [2020-12-22 08:27:37,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:37,972 INFO L93 Difference]: Finished difference Result 110433 states and 169402 transitions. [2020-12-22 08:27:37,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:27:37,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2020-12-22 08:27:37,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:38,232 INFO L225 Difference]: With dead ends: 110433 [2020-12-22 08:27:38,232 INFO L226 Difference]: Without dead ends: 89423 [2020-12-22 08:27:38,283 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 08:27:38,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89423 states. [2020-12-22 08:27:41,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89423 to 42053. [2020-12-22 08:27:41,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42053 states. [2020-12-22 08:27:41,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42053 states to 42053 states and 63556 transitions. [2020-12-22 08:27:41,904 INFO L78 Accepts]: Start accepts. Automaton has 42053 states and 63556 transitions. Word has length 67 [2020-12-22 08:27:41,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:41,905 INFO L481 AbstractCegarLoop]: Abstraction has 42053 states and 63556 transitions. [2020-12-22 08:27:41,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:27:41,905 INFO L276 IsEmpty]: Start isEmpty. Operand 42053 states and 63556 transitions. [2020-12-22 08:27:41,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:27:41,906 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:41,906 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 08:27:41,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:27:41,907 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:41,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:41,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1142699675, now seen corresponding path program 1 times [2020-12-22 08:27:41,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:41,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330968383] [2020-12-22 08:27:41,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:41,997 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 08:27:41,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330968383] [2020-12-22 08:27:41,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:41,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:27:41,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207013386] [2020-12-22 08:27:41,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:27:41,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:42,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:27:42,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:27:42,001 INFO L87 Difference]: Start difference. First operand 42053 states and 63556 transitions. Second operand 5 states. [2020-12-22 08:27:46,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:46,786 INFO L93 Difference]: Finished difference Result 85863 states and 128869 transitions. [2020-12-22 08:27:46,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:27:46,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-22 08:27:46,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:47,057 INFO L225 Difference]: With dead ends: 85863 [2020-12-22 08:27:47,058 INFO L226 Difference]: Without dead ends: 85861 [2020-12-22 08:27:47,101 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 08:27:47,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85861 states. [2020-12-22 08:27:50,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85861 to 43845. [2020-12-22 08:27:50,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43845 states. [2020-12-22 08:27:50,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43845 states to 43845 states and 65348 transitions. [2020-12-22 08:27:50,526 INFO L78 Accepts]: Start accepts. Automaton has 43845 states and 65348 transitions. Word has length 68 [2020-12-22 08:27:50,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:50,526 INFO L481 AbstractCegarLoop]: Abstraction has 43845 states and 65348 transitions. [2020-12-22 08:27:50,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:27:50,526 INFO L276 IsEmpty]: Start isEmpty. Operand 43845 states and 65348 transitions. [2020-12-22 08:27:50,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:27:50,528 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:50,528 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 08:27:50,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:27:50,528 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:50,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:50,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1053378469, now seen corresponding path program 1 times [2020-12-22 08:27:50,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:50,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368943688] [2020-12-22 08:27:50,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:50,600 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 08:27:50,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368943688] [2020-12-22 08:27:50,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:50,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:27:50,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798410898] [2020-12-22 08:27:50,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:27:50,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:50,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:27:50,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:27:50,607 INFO L87 Difference]: Start difference. First operand 43845 states and 65348 transitions. Second operand 3 states. [2020-12-22 08:27:54,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:54,147 INFO L93 Difference]: Finished difference Result 94971 states and 141368 transitions. [2020-12-22 08:27:54,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:27:54,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 08:27:54,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:54,232 INFO L225 Difference]: With dead ends: 94971 [2020-12-22 08:27:54,233 INFO L226 Difference]: Without dead ends: 51161 [2020-12-22 08:27:54,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:27:54,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51161 states. [2020-12-22 08:27:57,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51161 to 51159. [2020-12-22 08:27:57,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51159 states. [2020-12-22 08:27:57,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51159 states to 51159 states and 75910 transitions. [2020-12-22 08:27:57,811 INFO L78 Accepts]: Start accepts. Automaton has 51159 states and 75910 transitions. Word has length 69 [2020-12-22 08:27:57,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:57,812 INFO L481 AbstractCegarLoop]: Abstraction has 51159 states and 75910 transitions. [2020-12-22 08:27:57,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:27:57,812 INFO L276 IsEmpty]: Start isEmpty. Operand 51159 states and 75910 transitions. [2020-12-22 08:27:58,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 08:27:58,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:58,007 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] [2020-12-22 08:27:58,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:27:58,007 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:58,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:58,008 INFO L82 PathProgramCache]: Analyzing trace with hash -212554062, now seen corresponding path program 1 times [2020-12-22 08:27:58,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:58,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489942288] [2020-12-22 08:27:58,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:58,263 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 08:27:58,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489942288] [2020-12-22 08:27:58,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899947627] [2020-12-22 08:27:58,264 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 08:27:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:58,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 08:27:58,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:27:58,656 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 08:27:58,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:27:58,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 13 [2020-12-22 08:27:58,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813704304] [2020-12-22 08:27:58,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 08:27:58,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:58,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 08:27:58,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:27:58,659 INFO L87 Difference]: Start difference. First operand 51159 states and 75910 transitions. Second operand 13 states. [2020-12-22 08:28:00,495 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 26 [2020-12-22 08:28:44,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:28:44,978 INFO L93 Difference]: Finished difference Result 536390 states and 787771 transitions. [2020-12-22 08:28:44,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2020-12-22 08:28:44,978 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 94 [2020-12-22 08:28:44,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:28:46,310 INFO L225 Difference]: With dead ends: 536390 [2020-12-22 08:28:46,310 INFO L226 Difference]: Without dead ends: 485268 [2020-12-22 08:28:46,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6405 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2514, Invalid=12492, Unknown=0, NotChecked=0, Total=15006 [2020-12-22 08:28:47,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485268 states. [2020-12-22 08:29:03,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485268 to 150255. [2020-12-22 08:29:03,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150255 states. [2020-12-22 08:29:03,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150255 states to 150255 states and 220018 transitions. [2020-12-22 08:29:03,829 INFO L78 Accepts]: Start accepts. Automaton has 150255 states and 220018 transitions. Word has length 94 [2020-12-22 08:29:03,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:03,830 INFO L481 AbstractCegarLoop]: Abstraction has 150255 states and 220018 transitions. [2020-12-22 08:29:03,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 08:29:03,830 INFO L276 IsEmpty]: Start isEmpty. Operand 150255 states and 220018 transitions. [2020-12-22 08:29:03,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 08:29:03,864 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:03,865 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:29:04,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 08:29:04,079 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:04,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:04,080 INFO L82 PathProgramCache]: Analyzing trace with hash 625845135, now seen corresponding path program 1 times [2020-12-22 08:29:04,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:04,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149148061] [2020-12-22 08:29:04,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:04,148 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:29:04,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149148061] [2020-12-22 08:29:04,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:04,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:29:04,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969907302] [2020-12-22 08:29:04,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:29:04,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:04,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:29:04,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:29:04,150 INFO L87 Difference]: Start difference. First operand 150255 states and 220018 transitions. Second operand 3 states. [2020-12-22 08:29:25,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:25,593 INFO L93 Difference]: Finished difference Result 384017 states and 561214 transitions. [2020-12-22 08:29:25,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:29:25,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-22 08:29:25,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:26,157 INFO L225 Difference]: With dead ends: 384017 [2020-12-22 08:29:26,157 INFO L226 Difference]: Without dead ends: 249863 [2020-12-22 08:29:26,280 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 08:29:26,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249863 states. [2020-12-22 08:29:48,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249863 to 244245. [2020-12-22 08:29:48,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244245 states. [2020-12-22 08:29:49,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244245 states to 244245 states and 354204 transitions. [2020-12-22 08:29:49,239 INFO L78 Accepts]: Start accepts. Automaton has 244245 states and 354204 transitions. Word has length 95 [2020-12-22 08:29:49,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:49,239 INFO L481 AbstractCegarLoop]: Abstraction has 244245 states and 354204 transitions. [2020-12-22 08:29:49,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:29:49,240 INFO L276 IsEmpty]: Start isEmpty. Operand 244245 states and 354204 transitions. [2020-12-22 08:29:49,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 08:29:49,273 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:49,274 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:29:49,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:29:49,274 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:49,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:49,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1560210013, now seen corresponding path program 1 times [2020-12-22 08:29:49,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:49,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448892499] [2020-12-22 08:29:49,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:49,346 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:29:49,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448892499] [2020-12-22 08:29:49,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:49,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:29:49,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276117314] [2020-12-22 08:29:49,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:29:49,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:49,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:29:49,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:29:49,349 INFO L87 Difference]: Start difference. First operand 244245 states and 354204 transitions. Second operand 3 states. [2020-12-22 08:30:14,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:14,271 INFO L93 Difference]: Finished difference Result 351002 states and 508304 transitions. [2020-12-22 08:30:14,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:30:14,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-22 08:30:14,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:14,912 INFO L225 Difference]: With dead ends: 351002 [2020-12-22 08:30:14,912 INFO L226 Difference]: Without dead ends: 250856 [2020-12-22 08:30:15,061 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 08:30:15,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250856 states. [2020-12-22 08:30:37,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250856 to 244521. [2020-12-22 08:30:37,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244521 states.