/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.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:29:27,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:29:27,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:29:27,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:29:27,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:29:27,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:29:27,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:29:27,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:29:27,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:29:27,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:29:27,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:29:27,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:29:27,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:29:27,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:29:27,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:29:27,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:29:27,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:29:27,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:29:27,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:29:27,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:29:27,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:29:27,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:29:27,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:29:27,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:29:27,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:29:27,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:29:27,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:29:27,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:29:27,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:29:27,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:29:27,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:29:27,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:29:27,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:29:27,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:29:27,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:29:27,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:29:27,399 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:29:27,461 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:29:27,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:29:27,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:29:27,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:29:27,464 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:29:27,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:29:27,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:29:27,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:29:27,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:29:27,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:29:27,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:29:27,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:29:27,468 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:29:27,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:29:27,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:29:27,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:29:27,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:29:27,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:29:27,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:29:27,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:29:27,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:29:27,470 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:29:27,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:29:27,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:29:27,472 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:29:27,472 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:29:27,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:29:27,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:29:27,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:29:27,962 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:29:27,962 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:29:27,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-12-22 08:29:28,064 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73355c6d5/63ec9407db35413188fc0fa16aa361ed/FLAGc3e3e906c [2020-12-22 08:29:28,845 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:29:28,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-12-22 08:29:28,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73355c6d5/63ec9407db35413188fc0fa16aa361ed/FLAGc3e3e906c [2020-12-22 08:29:29,155 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73355c6d5/63ec9407db35413188fc0fa16aa361ed [2020-12-22 08:29:29,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:29:29,162 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:29:29,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:29:29,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:29:29,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:29:29,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:29:29" (1/1) ... [2020-12-22 08:29:29,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f08c8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:29:29, skipping insertion in model container [2020-12-22 08:29:29,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:29:29" (1/1) ... [2020-12-22 08:29:29,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:29:29,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:29:29,524 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.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[8205,8218] [2020-12-22 08:29:29,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:29:29,682 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:29:29,746 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.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[8205,8218] [2020-12-22 08:29:29,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:29:29,825 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:29:29,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:29:29 WrapperNode [2020-12-22 08:29:29,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:29:29,827 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:29:29,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:29:29,828 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:29:29,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:29:29" (1/1) ... [2020-12-22 08:29:29,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:29:29" (1/1) ... [2020-12-22 08:29:29,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:29:29,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:29:29,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:29:29,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:29:29,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:29:29" (1/1) ... [2020-12-22 08:29:29,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:29:29" (1/1) ... [2020-12-22 08:29:29,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:29:29" (1/1) ... [2020-12-22 08:29:29,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:29:29" (1/1) ... [2020-12-22 08:29:29,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:29:29" (1/1) ... [2020-12-22 08:29:29,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:29:29" (1/1) ... [2020-12-22 08:29:29,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:29:29" (1/1) ... [2020-12-22 08:29:29,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:29:29,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:29:29,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:29:29,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:29:29,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:29:29" (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 08:29:30,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:29:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:29:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:29:30,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:29:31,469 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:29:31,469 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:29:31,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:29:31 BoogieIcfgContainer [2020-12-22 08:29:31,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:29:31,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:29:31,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:29:31,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:29:31,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:29:29" (1/3) ... [2020-12-22 08:29:31,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf6154f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:29:31, skipping insertion in model container [2020-12-22 08:29:31,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:29:29" (2/3) ... [2020-12-22 08:29:31,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf6154f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:29:31, skipping insertion in model container [2020-12-22 08:29:31,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:29:31" (3/3) ... [2020-12-22 08:29:31,482 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-12-22 08:29:31,489 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:29:31,495 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:29:31,516 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:29:31,567 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:29:31,567 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:29:31,567 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:29:31,568 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:29:31,568 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:29:31,568 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:29:31,568 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:29:31,568 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:29:31,590 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-12-22 08:29:31,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 08:29:31,601 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:31,602 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] [2020-12-22 08:29:31,603 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:31,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:31,609 INFO L82 PathProgramCache]: Analyzing trace with hash -374161539, now seen corresponding path program 1 times [2020-12-22 08:29:31,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:31,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64875407] [2020-12-22 08:29:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:32,149 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 08:29:32,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64875407] [2020-12-22 08:29:32,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:32,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:29:32,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556476094] [2020-12-22 08:29:32,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:29:32,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:32,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:29:32,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:29:32,179 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2020-12-22 08:29:32,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:32,385 INFO L93 Difference]: Finished difference Result 418 states and 689 transitions. [2020-12-22 08:29:32,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:29:32,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 08:29:32,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:32,424 INFO L225 Difference]: With dead ends: 418 [2020-12-22 08:29:32,425 INFO L226 Difference]: Without dead ends: 315 [2020-12-22 08:29:32,429 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 08:29:32,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-12-22 08:29:32,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 313. [2020-12-22 08:29:32,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-12-22 08:29:32,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 467 transitions. [2020-12-22 08:29:32,509 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 467 transitions. Word has length 80 [2020-12-22 08:29:32,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:32,510 INFO L481 AbstractCegarLoop]: Abstraction has 313 states and 467 transitions. [2020-12-22 08:29:32,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:29:32,511 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 467 transitions. [2020-12-22 08:29:32,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:29:32,515 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:32,515 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 08:29:32,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:29:32,516 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:32,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:32,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1024475534, now seen corresponding path program 1 times [2020-12-22 08:29:32,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:32,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644834651] [2020-12-22 08:29:32,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:32,929 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 08:29:32,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644834651] [2020-12-22 08:29:32,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:32,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:29:32,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913123315] [2020-12-22 08:29:32,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:29:32,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:32,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:29:32,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:29:32,934 INFO L87 Difference]: Start difference. First operand 313 states and 467 transitions. Second operand 7 states. [2020-12-22 08:29:33,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:33,475 INFO L93 Difference]: Finished difference Result 1359 states and 2095 transitions. [2020-12-22 08:29:33,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:29:33,476 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 81 [2020-12-22 08:29:33,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:33,495 INFO L225 Difference]: With dead ends: 1359 [2020-12-22 08:29:33,498 INFO L226 Difference]: Without dead ends: 1123 [2020-12-22 08:29:33,502 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 08:29:33,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-12-22 08:29:33,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1115. [2020-12-22 08:29:33,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1115 states. [2020-12-22 08:29:33,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1712 transitions. [2020-12-22 08:29:33,632 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1712 transitions. Word has length 81 [2020-12-22 08:29:33,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:33,633 INFO L481 AbstractCegarLoop]: Abstraction has 1115 states and 1712 transitions. [2020-12-22 08:29:33,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:29:33,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1712 transitions. [2020-12-22 08:29:33,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:29:33,639 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:33,640 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 08:29:33,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:29:33,640 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:33,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:33,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1872628209, now seen corresponding path program 1 times [2020-12-22 08:29:33,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:33,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592371985] [2020-12-22 08:29:33,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:33,796 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 08:29:33,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592371985] [2020-12-22 08:29:33,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:33,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:29:33,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442908880] [2020-12-22 08:29:33,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:29:33,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:33,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:29:33,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:29:33,803 INFO L87 Difference]: Start difference. First operand 1115 states and 1712 transitions. Second operand 5 states. [2020-12-22 08:29:34,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:34,263 INFO L93 Difference]: Finished difference Result 3019 states and 4692 transitions. [2020-12-22 08:29:34,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:29:34,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-12-22 08:29:34,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:34,275 INFO L225 Difference]: With dead ends: 3019 [2020-12-22 08:29:34,276 INFO L226 Difference]: Without dead ends: 1959 [2020-12-22 08:29:34,280 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 08:29:34,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2020-12-22 08:29:34,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1957. [2020-12-22 08:29:34,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2020-12-22 08:29:34,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3024 transitions. [2020-12-22 08:29:34,447 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3024 transitions. Word has length 82 [2020-12-22 08:29:34,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:34,455 INFO L481 AbstractCegarLoop]: Abstraction has 1957 states and 3024 transitions. [2020-12-22 08:29:34,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:29:34,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3024 transitions. [2020-12-22 08:29:34,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:29:34,461 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:34,461 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 08:29:34,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:29:34,462 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:34,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:34,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1410777150, now seen corresponding path program 1 times [2020-12-22 08:29:34,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:34,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437538028] [2020-12-22 08:29:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:34,619 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 08:29:34,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437538028] [2020-12-22 08:29:34,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:34,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:29:34,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040256395] [2020-12-22 08:29:34,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:29:34,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:34,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:29:34,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:29:34,622 INFO L87 Difference]: Start difference. First operand 1957 states and 3024 transitions. Second operand 6 states. [2020-12-22 08:29:35,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:35,327 INFO L93 Difference]: Finished difference Result 6898 states and 10742 transitions. [2020-12-22 08:29:35,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:29:35,328 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-12-22 08:29:35,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:35,358 INFO L225 Difference]: With dead ends: 6898 [2020-12-22 08:29:35,358 INFO L226 Difference]: Without dead ends: 5019 [2020-12-22 08:29:35,362 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 08:29:35,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5019 states. [2020-12-22 08:29:35,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5019 to 5015. [2020-12-22 08:29:35,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5015 states. [2020-12-22 08:29:35,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5015 states to 5015 states and 7778 transitions. [2020-12-22 08:29:35,772 INFO L78 Accepts]: Start accepts. Automaton has 5015 states and 7778 transitions. Word has length 82 [2020-12-22 08:29:35,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:35,773 INFO L481 AbstractCegarLoop]: Abstraction has 5015 states and 7778 transitions. [2020-12-22 08:29:35,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:29:35,773 INFO L276 IsEmpty]: Start isEmpty. Operand 5015 states and 7778 transitions. [2020-12-22 08:29:35,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:29:35,780 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:35,780 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 08:29:35,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:29:35,781 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:35,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:35,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1933266084, now seen corresponding path program 1 times [2020-12-22 08:29:35,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:35,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041132665] [2020-12-22 08:29:35,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:35,892 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 08:29:35,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041132665] [2020-12-22 08:29:35,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:35,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:29:35,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002150587] [2020-12-22 08:29:35,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:29:35,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:35,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:29:35,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:29:35,897 INFO L87 Difference]: Start difference. First operand 5015 states and 7778 transitions. Second operand 5 states. [2020-12-22 08:29:36,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:36,778 INFO L93 Difference]: Finished difference Result 14286 states and 22247 transitions. [2020-12-22 08:29:36,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:29:36,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-12-22 08:29:36,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:36,827 INFO L225 Difference]: With dead ends: 14286 [2020-12-22 08:29:36,828 INFO L226 Difference]: Without dead ends: 9413 [2020-12-22 08:29:36,838 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 08:29:36,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9413 states. [2020-12-22 08:29:37,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9413 to 9411. [2020-12-22 08:29:37,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9411 states. [2020-12-22 08:29:37,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9411 states to 9411 states and 14583 transitions. [2020-12-22 08:29:37,605 INFO L78 Accepts]: Start accepts. Automaton has 9411 states and 14583 transitions. Word has length 82 [2020-12-22 08:29:37,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:37,606 INFO L481 AbstractCegarLoop]: Abstraction has 9411 states and 14583 transitions. [2020-12-22 08:29:37,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:29:37,606 INFO L276 IsEmpty]: Start isEmpty. Operand 9411 states and 14583 transitions. [2020-12-22 08:29:37,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:29:37,614 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:37,614 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 08:29:37,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:29:37,615 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:37,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:37,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1259416403, now seen corresponding path program 1 times [2020-12-22 08:29:37,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:37,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302940241] [2020-12-22 08:29:37,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:37,749 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 08:29:37,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302940241] [2020-12-22 08:29:37,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:37,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:29:37,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688329527] [2020-12-22 08:29:37,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:29:37,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:37,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:29:37,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:29:37,752 INFO L87 Difference]: Start difference. First operand 9411 states and 14583 transitions. Second operand 5 states. [2020-12-22 08:29:39,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:39,272 INFO L93 Difference]: Finished difference Result 27540 states and 42746 transitions. [2020-12-22 08:29:39,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:29:39,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-12-22 08:29:39,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:39,343 INFO L225 Difference]: With dead ends: 27540 [2020-12-22 08:29:39,344 INFO L226 Difference]: Without dead ends: 18237 [2020-12-22 08:29:39,360 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 08:29:39,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18237 states. [2020-12-22 08:29:40,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18237 to 18235. [2020-12-22 08:29:40,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18235 states. [2020-12-22 08:29:40,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18235 states to 18235 states and 28146 transitions. [2020-12-22 08:29:40,893 INFO L78 Accepts]: Start accepts. Automaton has 18235 states and 28146 transitions. Word has length 82 [2020-12-22 08:29:40,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:40,893 INFO L481 AbstractCegarLoop]: Abstraction has 18235 states and 28146 transitions. [2020-12-22 08:29:40,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:29:40,894 INFO L276 IsEmpty]: Start isEmpty. Operand 18235 states and 28146 transitions. [2020-12-22 08:29:40,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 08:29:40,899 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:40,899 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 08:29:40,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:29:40,900 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:40,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:40,901 INFO L82 PathProgramCache]: Analyzing trace with hash -407485162, now seen corresponding path program 1 times [2020-12-22 08:29:40,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:40,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194633668] [2020-12-22 08:29:40,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:40,984 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 08:29:40,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194633668] [2020-12-22 08:29:40,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:40,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:29:40,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783926915] [2020-12-22 08:29:40,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:29:40,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:40,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:29:40,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:29:40,987 INFO L87 Difference]: Start difference. First operand 18235 states and 28146 transitions. Second operand 6 states. [2020-12-22 08:29:43,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:43,965 INFO L93 Difference]: Finished difference Result 68658 states and 105920 transitions. [2020-12-22 08:29:43,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:29:43,966 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-12-22 08:29:43,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:44,119 INFO L225 Difference]: With dead ends: 68658 [2020-12-22 08:29:44,119 INFO L226 Difference]: Without dead ends: 50487 [2020-12-22 08:29:44,151 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 08:29:44,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50487 states. [2020-12-22 08:29:46,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50487 to 35921. [2020-12-22 08:29:46,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35921 states. [2020-12-22 08:29:47,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35921 states to 35921 states and 55155 transitions. [2020-12-22 08:29:47,046 INFO L78 Accepts]: Start accepts. Automaton has 35921 states and 55155 transitions. Word has length 83 [2020-12-22 08:29:47,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:47,047 INFO L481 AbstractCegarLoop]: Abstraction has 35921 states and 55155 transitions. [2020-12-22 08:29:47,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:29:47,047 INFO L276 IsEmpty]: Start isEmpty. Operand 35921 states and 55155 transitions. [2020-12-22 08:29:47,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 08:29:47,057 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:47,057 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 08:29:47,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:29:47,057 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:47,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:47,058 INFO L82 PathProgramCache]: Analyzing trace with hash 174469786, now seen corresponding path program 1 times [2020-12-22 08:29:47,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:47,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689793001] [2020-12-22 08:29:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:47,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:29:47,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689793001] [2020-12-22 08:29:47,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:47,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:29:47,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837849167] [2020-12-22 08:29:47,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:29:47,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:47,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:29:47,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:29:47,199 INFO L87 Difference]: Start difference. First operand 35921 states and 55155 transitions. Second operand 5 states. [2020-12-22 08:29:50,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:50,508 INFO L93 Difference]: Finished difference Result 68331 states and 104428 transitions. [2020-12-22 08:29:50,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:29:50,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-12-22 08:29:50,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:50,653 INFO L225 Difference]: With dead ends: 68331 [2020-12-22 08:29:50,653 INFO L226 Difference]: Without dead ends: 68329 [2020-12-22 08:29:50,674 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 08:29:50,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68329 states. [2020-12-22 08:29:53,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68329 to 36401. [2020-12-22 08:29:53,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36401 states. [2020-12-22 08:29:53,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36401 states to 36401 states and 55635 transitions. [2020-12-22 08:29:53,562 INFO L78 Accepts]: Start accepts. Automaton has 36401 states and 55635 transitions. Word has length 83 [2020-12-22 08:29:53,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:53,562 INFO L481 AbstractCegarLoop]: Abstraction has 36401 states and 55635 transitions. [2020-12-22 08:29:53,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:29:53,562 INFO L276 IsEmpty]: Start isEmpty. Operand 36401 states and 55635 transitions. [2020-12-22 08:29:53,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 08:29:53,575 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:53,575 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 08:29:53,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:29:53,575 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:53,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:53,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1373936999, now seen corresponding path program 1 times [2020-12-22 08:29:53,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:53,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677900028] [2020-12-22 08:29:53,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:53,904 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 08:29:53,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677900028] [2020-12-22 08:29:53,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:53,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:29:53,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960618535] [2020-12-22 08:29:53,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:29:53,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:53,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:29:53,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:29:53,920 INFO L87 Difference]: Start difference. First operand 36401 states and 55635 transitions. Second operand 10 states. [2020-12-22 08:30:06,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:06,206 INFO L93 Difference]: Finished difference Result 173116 states and 262084 transitions. [2020-12-22 08:30:06,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 08:30:06,207 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-12-22 08:30:06,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:06,837 INFO L225 Difference]: With dead ends: 173116 [2020-12-22 08:30:06,837 INFO L226 Difference]: Without dead ends: 147061 [2020-12-22 08:30:06,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=219, Invalid=593, Unknown=0, NotChecked=0, Total=812 [2020-12-22 08:30:07,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147061 states. [2020-12-22 08:30:11,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147061 to 36600. [2020-12-22 08:30:11,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36600 states. [2020-12-22 08:30:11,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36600 states to 36600 states and 55896 transitions. [2020-12-22 08:30:11,414 INFO L78 Accepts]: Start accepts. Automaton has 36600 states and 55896 transitions. Word has length 84 [2020-12-22 08:30:11,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:30:11,415 INFO L481 AbstractCegarLoop]: Abstraction has 36600 states and 55896 transitions. [2020-12-22 08:30:11,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:30:11,415 INFO L276 IsEmpty]: Start isEmpty. Operand 36600 states and 55896 transitions. [2020-12-22 08:30:11,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 08:30:11,425 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:11,425 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 08:30:11,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:30:11,426 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:11,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:11,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1624682823, now seen corresponding path program 1 times [2020-12-22 08:30:11,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:11,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685412990] [2020-12-22 08:30:11,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:30:11,734 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 08:30:11,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685412990] [2020-12-22 08:30:11,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:30:11,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:30:11,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945167899] [2020-12-22 08:30:11,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:30:11,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:30:11,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:30:11,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:30:11,737 INFO L87 Difference]: Start difference. First operand 36600 states and 55896 transitions. Second operand 10 states. [2020-12-22 08:30:12,248 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 22 [2020-12-22 08:30:30,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:30,840 INFO L93 Difference]: Finished difference Result 206357 states and 314869 transitions. [2020-12-22 08:30:30,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 08:30:30,843 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-12-22 08:30:30,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:31,299 INFO L225 Difference]: With dead ends: 206357 [2020-12-22 08:30:31,300 INFO L226 Difference]: Without dead ends: 185976 [2020-12-22 08:30:31,361 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 08:30:31,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185976 states. [2020-12-22 08:30:36,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185976 to 37070. [2020-12-22 08:30:36,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37070 states. [2020-12-22 08:30:36,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37070 states to 37070 states and 56508 transitions. [2020-12-22 08:30:36,326 INFO L78 Accepts]: Start accepts. Automaton has 37070 states and 56508 transitions. Word has length 84 [2020-12-22 08:30:36,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:30:36,326 INFO L481 AbstractCegarLoop]: Abstraction has 37070 states and 56508 transitions. [2020-12-22 08:30:36,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:30:36,326 INFO L276 IsEmpty]: Start isEmpty. Operand 37070 states and 56508 transitions. [2020-12-22 08:30:36,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 08:30:36,338 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:36,338 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 08:30:36,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:30:36,338 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:36,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:36,339 INFO L82 PathProgramCache]: Analyzing trace with hash -817188601, now seen corresponding path program 1 times [2020-12-22 08:30:36,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:36,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669565454] [2020-12-22 08:30:36,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:30:36,556 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 08:30:36,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669565454] [2020-12-22 08:30:36,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:30:36,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:30:36,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760276148] [2020-12-22 08:30:36,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:30:36,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:30:36,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:30:36,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:30:36,559 INFO L87 Difference]: Start difference. First operand 37070 states and 56508 transitions. Second operand 10 states. [2020-12-22 08:30:57,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:57,905 INFO L93 Difference]: Finished difference Result 194410 states and 295185 transitions. [2020-12-22 08:30:57,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:30:57,906 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-12-22 08:30:57,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:58,440 INFO L225 Difference]: With dead ends: 194410 [2020-12-22 08:30:58,440 INFO L226 Difference]: Without dead ends: 190178 [2020-12-22 08:30:58,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=236, Invalid=694, Unknown=0, NotChecked=0, Total=930 [2020-12-22 08:30:58,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190178 states. [2020-12-22 08:31:03,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190178 to 37070. [2020-12-22 08:31:03,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37070 states. [2020-12-22 08:31:03,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37070 states to 37070 states and 56504 transitions. [2020-12-22 08:31:03,843 INFO L78 Accepts]: Start accepts. Automaton has 37070 states and 56504 transitions. Word has length 84 [2020-12-22 08:31:03,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:03,844 INFO L481 AbstractCegarLoop]: Abstraction has 37070 states and 56504 transitions. [2020-12-22 08:31:03,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:31:03,844 INFO L276 IsEmpty]: Start isEmpty. Operand 37070 states and 56504 transitions. [2020-12-22 08:31:03,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 08:31:03,853 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:03,854 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 08:31:03,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:31:03,854 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:03,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:03,855 INFO L82 PathProgramCache]: Analyzing trace with hash -916583129, now seen corresponding path program 1 times [2020-12-22 08:31:03,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:03,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235536019] [2020-12-22 08:31:03,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:04,083 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 08:31:04,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235536019] [2020-12-22 08:31:04,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:04,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:31:04,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257454940] [2020-12-22 08:31:04,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:31:04,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:04,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:31:04,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:31:04,086 INFO L87 Difference]: Start difference. First operand 37070 states and 56504 transitions. Second operand 10 states. [2020-12-22 08:31:20,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:20,259 INFO L93 Difference]: Finished difference Result 118547 states and 178621 transitions. [2020-12-22 08:31:20,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 08:31:20,262 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-12-22 08:31:20,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:20,440 INFO L225 Difference]: With dead ends: 118547 [2020-12-22 08:31:20,440 INFO L226 Difference]: Without dead ends: 106713 [2020-12-22 08:31:20,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2020-12-22 08:31:20,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106713 states. [2020-12-22 08:31:25,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106713 to 37879. [2020-12-22 08:31:25,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37879 states. [2020-12-22 08:31:25,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37879 states to 37879 states and 57641 transitions. [2020-12-22 08:31:25,922 INFO L78 Accepts]: Start accepts. Automaton has 37879 states and 57641 transitions. Word has length 84 [2020-12-22 08:31:25,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:25,922 INFO L481 AbstractCegarLoop]: Abstraction has 37879 states and 57641 transitions. [2020-12-22 08:31:25,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:31:25,922 INFO L276 IsEmpty]: Start isEmpty. Operand 37879 states and 57641 transitions. [2020-12-22 08:31:25,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 08:31:25,933 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:25,934 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 08:31:25,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:31:25,934 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:25,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:25,935 INFO L82 PathProgramCache]: Analyzing trace with hash -298707139, now seen corresponding path program 1 times [2020-12-22 08:31:25,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:25,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234813954] [2020-12-22 08:31:25,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:26,162 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 08:31:26,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234813954] [2020-12-22 08:31:26,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:26,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:31:26,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230875336] [2020-12-22 08:31:26,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:31:26,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:26,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:31:26,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:31:26,166 INFO L87 Difference]: Start difference. First operand 37879 states and 57641 transitions. Second operand 10 states. [2020-12-22 08:32:12,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:12,015 INFO L93 Difference]: Finished difference Result 337545 states and 514721 transitions. [2020-12-22 08:32:12,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 08:32:12,185 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-12-22 08:32:12,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:12,789 INFO L225 Difference]: With dead ends: 337545 [2020-12-22 08:32:12,790 INFO L226 Difference]: Without dead ends: 301318 [2020-12-22 08:32:12,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 08:32:13,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301318 states. [2020-12-22 08:32:21,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301318 to 38238. [2020-12-22 08:32:21,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38238 states. [2020-12-22 08:32:21,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38238 states to 38238 states and 58052 transitions. [2020-12-22 08:32:21,536 INFO L78 Accepts]: Start accepts. Automaton has 38238 states and 58052 transitions. Word has length 85 [2020-12-22 08:32:21,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:21,536 INFO L481 AbstractCegarLoop]: Abstraction has 38238 states and 58052 transitions. [2020-12-22 08:32:21,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:32:21,536 INFO L276 IsEmpty]: Start isEmpty. Operand 38238 states and 58052 transitions. [2020-12-22 08:32:21,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 08:32:21,545 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:21,545 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 08:32:21,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:32:21,545 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:21,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:21,546 INFO L82 PathProgramCache]: Analyzing trace with hash -346590493, now seen corresponding path program 1 times [2020-12-22 08:32:21,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:21,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435706208] [2020-12-22 08:32:21,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:21,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:21,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435706208] [2020-12-22 08:32:21,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:21,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:32:21,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71211536] [2020-12-22 08:32:21,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:32:21,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:21,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:32:21,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:32:21,689 INFO L87 Difference]: Start difference. First operand 38238 states and 58052 transitions. Second operand 4 states. [2020-12-22 08:32:32,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:32,917 INFO L93 Difference]: Finished difference Result 104538 states and 158794 transitions. [2020-12-22 08:32:32,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:32:32,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-12-22 08:32:32,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:33,012 INFO L225 Difference]: With dead ends: 104538 [2020-12-22 08:32:33,012 INFO L226 Difference]: Without dead ends: 69128 [2020-12-22 08:32:33,039 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 08:32:33,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69128 states. [2020-12-22 08:32:44,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69128 to 69126. [2020-12-22 08:32:44,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69126 states. [2020-12-22 08:32:44,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69126 states to 69126 states and 104360 transitions. [2020-12-22 08:32:44,488 INFO L78 Accepts]: Start accepts. Automaton has 69126 states and 104360 transitions. Word has length 85 [2020-12-22 08:32:44,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:44,489 INFO L481 AbstractCegarLoop]: Abstraction has 69126 states and 104360 transitions. [2020-12-22 08:32:44,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:32:44,489 INFO L276 IsEmpty]: Start isEmpty. Operand 69126 states and 104360 transitions. [2020-12-22 08:32:44,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 08:32:44,497 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:44,497 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 08:32:44,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:32:44,498 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:44,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:44,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1374524072, now seen corresponding path program 1 times [2020-12-22 08:32:44,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:44,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154375490] [2020-12-22 08:32:44,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:44,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154375490] [2020-12-22 08:32:44,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:44,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:32:44,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027191069] [2020-12-22 08:32:44,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:32:44,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:44,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:32:44,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:44,577 INFO L87 Difference]: Start difference. First operand 69126 states and 104360 transitions. Second operand 3 states. [2020-12-22 08:33:00,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:00,462 INFO L93 Difference]: Finished difference Result 138221 states and 209115 transitions. [2020-12-22 08:33:00,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:33:00,463 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-12-22 08:33:00,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:00,617 INFO L225 Difference]: With dead ends: 138221 [2020-12-22 08:33:00,618 INFO L226 Difference]: Without dead ends: 94066 [2020-12-22 08:33:00,657 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 08:33:00,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94066 states. [2020-12-22 08:33:16,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94066 to 93184. [2020-12-22 08:33:16,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93184 states. [2020-12-22 08:33:17,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93184 states to 93184 states and 139354 transitions. [2020-12-22 08:33:17,219 INFO L78 Accepts]: Start accepts. Automaton has 93184 states and 139354 transitions. Word has length 85 [2020-12-22 08:33:17,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:17,219 INFO L481 AbstractCegarLoop]: Abstraction has 93184 states and 139354 transitions. [2020-12-22 08:33:17,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:33:17,220 INFO L276 IsEmpty]: Start isEmpty. Operand 93184 states and 139354 transitions. [2020-12-22 08:33:17,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 08:33:17,228 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:17,228 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 08:33:17,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:33:17,229 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:17,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:17,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1970268265, now seen corresponding path program 1 times [2020-12-22 08:33:17,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:17,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591936039] [2020-12-22 08:33:17,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:17,291 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 08:33:17,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591936039] [2020-12-22 08:33:17,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:17,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:33:17,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169479763] [2020-12-22 08:33:17,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:33:17,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:17,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:33:17,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:33:17,297 INFO L87 Difference]: Start difference. First operand 93184 states and 139354 transitions. Second operand 3 states.