/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/systemc/token_ring.07.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:09:19,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:09:19,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:09:19,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 07:09:19,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 07:09:19,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 07:09:19,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 07:09:19,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 07:09:19,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 07:09:19,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 07:09:19,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 07:09:19,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 07:09:19,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:09:19,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:09:19,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:09:19,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:09:19,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:09:19,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:09:19,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:09:19,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:09:19,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:09:19,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:09:19,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:09:19,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:09:19,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:09:19,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 07:09:19,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 07:09:19,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 07:09:19,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 07:09:19,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 07:09:19,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 07:09:19,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 07:09:19,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 07:09:19,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:09:19,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:09:19,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:09:19,902 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:09:19,950 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:09:19,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:09:19,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:09:19,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:09:19,953 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:09:19,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:09:19,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:09:19,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:09:19,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:09:19,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:09:19,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:09:19,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:09:19,954 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:09:19,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:09:19,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:09:19,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:09:19,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:09:19,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:09:19,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:09:19,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:09:19,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:09:19,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:09:19,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:09:19,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:09:19,957 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:09:19,957 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:09:20,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:09:20,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:09:20,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:09:20,402 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:09:20,403 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:09:20,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.07.cil-2.c [2020-12-22 07:09:20,498 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25e1c8c98/a0316e7cbf75468a99f33c8ce09c7b8d/FLAG87aa014cd [2020-12-22 07:09:21,225 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:09:21,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.07.cil-2.c [2020-12-22 07:09:21,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25e1c8c98/a0316e7cbf75468a99f33c8ce09c7b8d/FLAG87aa014cd [2020-12-22 07:09:21,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25e1c8c98/a0316e7cbf75468a99f33c8ce09c7b8d [2020-12-22 07:09:21,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:09:21,488 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:09:21,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:09:21,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:09:21,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:09:21,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:09:21" (1/1) ... [2020-12-22 07:09:21,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44646044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:09:21, skipping insertion in model container [2020-12-22 07:09:21,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:09:21" (1/1) ... [2020-12-22 07:09:21,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:09:21,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:09:21,796 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/systemc/token_ring.07.cil-2.c[366,379] [2020-12-22 07:09:21,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:09:21,931 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:09:21,951 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/systemc/token_ring.07.cil-2.c[366,379] [2020-12-22 07:09:22,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:09:22,100 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:09:22,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:09:22 WrapperNode [2020-12-22 07:09:22,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:09:22,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:09:22,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:09:22,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:09:22,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:09:22" (1/1) ... [2020-12-22 07:09:22,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:09:22" (1/1) ... [2020-12-22 07:09:22,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:09:22,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:09:22,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:09:22,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:09:22,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:09:22" (1/1) ... [2020-12-22 07:09:22,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:09:22" (1/1) ... [2020-12-22 07:09:22,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:09:22" (1/1) ... [2020-12-22 07:09:22,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:09:22" (1/1) ... [2020-12-22 07:09:22,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:09:22" (1/1) ... [2020-12-22 07:09:22,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:09:22" (1/1) ... [2020-12-22 07:09:22,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:09:22" (1/1) ... [2020-12-22 07:09:22,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:09:22,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:09:22,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:09:22,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:09:22,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:09:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:09:22,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:09:22,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:09:22,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:09:22,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:09:24,206 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:09:24,207 INFO L299 CfgBuilder]: Removed 280 assume(true) statements. [2020-12-22 07:09:24,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:09:24 BoogieIcfgContainer [2020-12-22 07:09:24,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:09:24,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:09:24,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:09:24,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:09:24,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:09:21" (1/3) ... [2020-12-22 07:09:24,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e206912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:09:24, skipping insertion in model container [2020-12-22 07:09:24,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:09:22" (2/3) ... [2020-12-22 07:09:24,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e206912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:09:24, skipping insertion in model container [2020-12-22 07:09:24,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:09:24" (3/3) ... [2020-12-22 07:09:24,223 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.07.cil-2.c [2020-12-22 07:09:24,230 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:09:24,236 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 07:09:24,256 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 07:09:24,310 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:09:24,311 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:09:24,311 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:09:24,311 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:09:24,311 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:09:24,311 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:09:24,311 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:09:24,312 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:09:24,350 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states. [2020-12-22 07:09:24,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:09:24,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:24,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:24,364 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:24,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:24,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1880548039, now seen corresponding path program 1 times [2020-12-22 07:09:24,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:24,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589026333] [2020-12-22 07:09:24,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:24,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:09:24,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589026333] [2020-12-22 07:09:24,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:24,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:09:24,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603721019] [2020-12-22 07:09:24,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:09:24,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:24,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:09:24,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:09:24,660 INFO L87 Difference]: Start difference. First operand 820 states. Second operand 3 states. [2020-12-22 07:09:24,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:09:24,789 INFO L93 Difference]: Finished difference Result 1635 states and 2507 transitions. [2020-12-22 07:09:24,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:09:24,791 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:09:24,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:09:24,820 INFO L225 Difference]: With dead ends: 1635 [2020-12-22 07:09:24,820 INFO L226 Difference]: Without dead ends: 816 [2020-12-22 07:09:24,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:09:24,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2020-12-22 07:09:24,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2020-12-22 07:09:24,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-12-22 07:09:24,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1230 transitions. [2020-12-22 07:09:24,943 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1230 transitions. Word has length 105 [2020-12-22 07:09:24,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:09:24,943 INFO L481 AbstractCegarLoop]: Abstraction has 816 states and 1230 transitions. [2020-12-22 07:09:24,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:09:24,943 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1230 transitions. [2020-12-22 07:09:24,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:09:24,946 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:24,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:24,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:09:24,947 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:24,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:24,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1107276859, now seen corresponding path program 1 times [2020-12-22 07:09:24,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:24,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607447897] [2020-12-22 07:09:24,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:25,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:09:25,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607447897] [2020-12-22 07:09:25,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:25,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:09:25,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45699765] [2020-12-22 07:09:25,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:09:25,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:25,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:09:25,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:09:25,124 INFO L87 Difference]: Start difference. First operand 816 states and 1230 transitions. Second operand 3 states. [2020-12-22 07:09:25,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:09:25,207 INFO L93 Difference]: Finished difference Result 2280 states and 3426 transitions. [2020-12-22 07:09:25,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:09:25,208 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:09:25,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:09:25,216 INFO L225 Difference]: With dead ends: 2280 [2020-12-22 07:09:25,216 INFO L226 Difference]: Without dead ends: 1476 [2020-12-22 07:09:25,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:09:25,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2020-12-22 07:09:25,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1472. [2020-12-22 07:09:25,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-22 07:09:25,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2210 transitions. [2020-12-22 07:09:25,279 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2210 transitions. Word has length 105 [2020-12-22 07:09:25,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:09:25,280 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2210 transitions. [2020-12-22 07:09:25,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:09:25,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2210 transitions. [2020-12-22 07:09:25,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:09:25,290 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:25,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:25,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:09:25,291 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:25,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:25,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1591347777, now seen corresponding path program 1 times [2020-12-22 07:09:25,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:25,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886319097] [2020-12-22 07:09:25,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:25,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:09:25,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886319097] [2020-12-22 07:09:25,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:25,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:09:25,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600891705] [2020-12-22 07:09:25,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:09:25,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:25,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:09:25,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:09:25,453 INFO L87 Difference]: Start difference. First operand 1472 states and 2210 transitions. Second operand 4 states. [2020-12-22 07:09:25,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:09:25,613 INFO L93 Difference]: Finished difference Result 3588 states and 5377 transitions. [2020-12-22 07:09:25,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:09:25,615 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-22 07:09:25,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:09:25,627 INFO L225 Difference]: With dead ends: 3588 [2020-12-22 07:09:25,628 INFO L226 Difference]: Without dead ends: 2130 [2020-12-22 07:09:25,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:09:25,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2130 states. [2020-12-22 07:09:25,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2130 to 1472. [2020-12-22 07:09:25,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-22 07:09:25,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2207 transitions. [2020-12-22 07:09:25,744 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2207 transitions. Word has length 105 [2020-12-22 07:09:25,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:09:25,752 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2207 transitions. [2020-12-22 07:09:25,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:09:25,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2207 transitions. [2020-12-22 07:09:25,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:09:25,756 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:25,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:25,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:09:25,756 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:25,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:25,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1562847487, now seen corresponding path program 1 times [2020-12-22 07:09:25,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:25,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607179382] [2020-12-22 07:09:25,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:25,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:09:25,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607179382] [2020-12-22 07:09:25,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:25,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:09:25,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893033530] [2020-12-22 07:09:25,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:09:25,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:25,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:09:25,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:09:25,891 INFO L87 Difference]: Start difference. First operand 1472 states and 2207 transitions. Second operand 4 states. [2020-12-22 07:09:26,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:09:26,094 INFO L93 Difference]: Finished difference Result 3586 states and 5367 transitions. [2020-12-22 07:09:26,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:09:26,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-22 07:09:26,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:09:26,105 INFO L225 Difference]: With dead ends: 3586 [2020-12-22 07:09:26,105 INFO L226 Difference]: Without dead ends: 2129 [2020-12-22 07:09:26,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:09:26,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2020-12-22 07:09:26,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 1472. [2020-12-22 07:09:26,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-22 07:09:26,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2204 transitions. [2020-12-22 07:09:26,181 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2204 transitions. Word has length 105 [2020-12-22 07:09:26,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:09:26,182 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2204 transitions. [2020-12-22 07:09:26,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:09:26,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2204 transitions. [2020-12-22 07:09:26,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:09:26,183 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:26,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:26,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:09:26,184 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:26,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:26,184 INFO L82 PathProgramCache]: Analyzing trace with hash -377734527, now seen corresponding path program 1 times [2020-12-22 07:09:26,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:26,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107415698] [2020-12-22 07:09:26,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:26,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:09:26,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107415698] [2020-12-22 07:09:26,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:26,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:09:26,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335537442] [2020-12-22 07:09:26,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:09:26,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:26,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:09:26,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:09:26,327 INFO L87 Difference]: Start difference. First operand 1472 states and 2204 transitions. Second operand 3 states. [2020-12-22 07:09:26,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:09:26,417 INFO L93 Difference]: Finished difference Result 2928 states and 4383 transitions. [2020-12-22 07:09:26,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:09:26,418 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:09:26,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:09:26,427 INFO L225 Difference]: With dead ends: 2928 [2020-12-22 07:09:26,428 INFO L226 Difference]: Without dead ends: 1472 [2020-12-22 07:09:26,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:09:26,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2020-12-22 07:09:26,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1472. [2020-12-22 07:09:26,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-22 07:09:26,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2196 transitions. [2020-12-22 07:09:26,514 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2196 transitions. Word has length 105 [2020-12-22 07:09:26,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:09:26,515 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2196 transitions. [2020-12-22 07:09:26,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:09:26,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2196 transitions. [2020-12-22 07:09:26,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:09:26,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:26,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:26,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:09:26,517 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:26,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:26,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1561368317, now seen corresponding path program 1 times [2020-12-22 07:09:26,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:26,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512083304] [2020-12-22 07:09:26,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:26,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:09:26,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512083304] [2020-12-22 07:09:26,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:26,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:09:26,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963988468] [2020-12-22 07:09:26,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:09:26,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:26,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:09:26,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:09:26,569 INFO L87 Difference]: Start difference. First operand 1472 states and 2196 transitions. Second operand 3 states. [2020-12-22 07:09:26,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:09:26,658 INFO L93 Difference]: Finished difference Result 2927 states and 4366 transitions. [2020-12-22 07:09:26,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:09:26,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:09:26,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:09:26,667 INFO L225 Difference]: With dead ends: 2927 [2020-12-22 07:09:26,667 INFO L226 Difference]: Without dead ends: 1472 [2020-12-22 07:09:26,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:09:26,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2020-12-22 07:09:26,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1472. [2020-12-22 07:09:26,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-22 07:09:26,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2188 transitions. [2020-12-22 07:09:26,772 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2188 transitions. Word has length 105 [2020-12-22 07:09:26,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:09:26,772 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2188 transitions. [2020-12-22 07:09:26,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:09:26,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2188 transitions. [2020-12-22 07:09:26,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:09:26,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:26,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:26,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:09:26,774 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:26,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:26,780 INFO L82 PathProgramCache]: Analyzing trace with hash 931183361, now seen corresponding path program 1 times [2020-12-22 07:09:26,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:26,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780839959] [2020-12-22 07:09:26,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:26,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:09:26,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780839959] [2020-12-22 07:09:26,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:26,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:09:26,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164061748] [2020-12-22 07:09:26,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:09:26,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:26,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:09:26,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:09:26,879 INFO L87 Difference]: Start difference. First operand 1472 states and 2188 transitions. Second operand 4 states. [2020-12-22 07:09:27,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:09:27,131 INFO L93 Difference]: Finished difference Result 3580 states and 5315 transitions. [2020-12-22 07:09:27,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:09:27,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-22 07:09:27,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:09:27,149 INFO L225 Difference]: With dead ends: 3580 [2020-12-22 07:09:27,149 INFO L226 Difference]: Without dead ends: 2126 [2020-12-22 07:09:27,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:09:27,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2020-12-22 07:09:27,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 1472. [2020-12-22 07:09:27,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-22 07:09:27,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2185 transitions. [2020-12-22 07:09:27,264 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2185 transitions. Word has length 105 [2020-12-22 07:09:27,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:09:27,264 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2185 transitions. [2020-12-22 07:09:27,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:09:27,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2185 transitions. [2020-12-22 07:09:27,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:09:27,265 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:27,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:27,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:09:27,266 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:27,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:27,267 INFO L82 PathProgramCache]: Analyzing trace with hash -63510337, now seen corresponding path program 1 times [2020-12-22 07:09:27,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:27,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633645530] [2020-12-22 07:09:27,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:27,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:09:27,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633645530] [2020-12-22 07:09:27,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:27,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:09:27,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107418864] [2020-12-22 07:09:27,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:09:27,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:27,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:09:27,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:09:27,359 INFO L87 Difference]: Start difference. First operand 1472 states and 2185 transitions. Second operand 4 states. [2020-12-22 07:09:27,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:09:27,594 INFO L93 Difference]: Finished difference Result 3578 states and 5305 transitions. [2020-12-22 07:09:27,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:09:27,595 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-22 07:09:27,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:09:27,607 INFO L225 Difference]: With dead ends: 3578 [2020-12-22 07:09:27,607 INFO L226 Difference]: Without dead ends: 2125 [2020-12-22 07:09:27,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:09:27,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2020-12-22 07:09:27,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 1472. [2020-12-22 07:09:27,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-22 07:09:27,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2182 transitions. [2020-12-22 07:09:27,725 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2182 transitions. Word has length 105 [2020-12-22 07:09:27,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:09:27,725 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2182 transitions. [2020-12-22 07:09:27,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:09:27,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2182 transitions. [2020-12-22 07:09:27,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:09:27,726 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:27,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:27,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:09:27,729 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:27,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:27,729 INFO L82 PathProgramCache]: Analyzing trace with hash -649786559, now seen corresponding path program 1 times [2020-12-22 07:09:27,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:27,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874855620] [2020-12-22 07:09:27,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:27,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:09:27,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874855620] [2020-12-22 07:09:27,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:27,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:09:27,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641112535] [2020-12-22 07:09:27,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:09:27,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:27,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:09:27,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:09:27,784 INFO L87 Difference]: Start difference. First operand 1472 states and 2182 transitions. Second operand 4 states. [2020-12-22 07:09:28,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:09:28,077 INFO L93 Difference]: Finished difference Result 3520 states and 5215 transitions. [2020-12-22 07:09:28,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:09:28,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-22 07:09:28,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:09:28,088 INFO L225 Difference]: With dead ends: 3520 [2020-12-22 07:09:28,088 INFO L226 Difference]: Without dead ends: 2068 [2020-12-22 07:09:28,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:09:28,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2020-12-22 07:09:28,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 1472. [2020-12-22 07:09:28,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-22 07:09:28,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2179 transitions. [2020-12-22 07:09:28,196 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2179 transitions. Word has length 105 [2020-12-22 07:09:28,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:09:28,198 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2179 transitions. [2020-12-22 07:09:28,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:09:28,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2179 transitions. [2020-12-22 07:09:28,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:09:28,200 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:28,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:28,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:09:28,200 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:28,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:28,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1686605951, now seen corresponding path program 1 times [2020-12-22 07:09:28,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:28,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879327264] [2020-12-22 07:09:28,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:28,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:09:28,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879327264] [2020-12-22 07:09:28,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:28,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:09:28,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436800959] [2020-12-22 07:09:28,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:09:28,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:28,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:09:28,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:09:28,257 INFO L87 Difference]: Start difference. First operand 1472 states and 2179 transitions. Second operand 3 states. [2020-12-22 07:09:28,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:09:28,392 INFO L93 Difference]: Finished difference Result 2922 states and 4326 transitions. [2020-12-22 07:09:28,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:09:28,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:09:28,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:09:28,401 INFO L225 Difference]: With dead ends: 2922 [2020-12-22 07:09:28,401 INFO L226 Difference]: Without dead ends: 1472 [2020-12-22 07:09:28,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:09:28,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2020-12-22 07:09:28,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1472. [2020-12-22 07:09:28,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-22 07:09:28,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2153 transitions. [2020-12-22 07:09:28,533 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2153 transitions. Word has length 105 [2020-12-22 07:09:28,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:09:28,533 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2153 transitions. [2020-12-22 07:09:28,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:09:28,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2153 transitions. [2020-12-22 07:09:28,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:09:28,535 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:28,535 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:28,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:09:28,535 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:28,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:28,536 INFO L82 PathProgramCache]: Analyzing trace with hash -192524995, now seen corresponding path program 1 times [2020-12-22 07:09:28,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:28,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960570446] [2020-12-22 07:09:28,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:09:28,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960570446] [2020-12-22 07:09:28,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:28,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:09:28,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660168082] [2020-12-22 07:09:28,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:09:28,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:28,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:09:28,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:09:28,592 INFO L87 Difference]: Start difference. First operand 1472 states and 2153 transitions. Second operand 4 states. [2020-12-22 07:09:28,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:09:28,875 INFO L93 Difference]: Finished difference Result 3514 states and 5137 transitions. [2020-12-22 07:09:28,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:09:28,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-22 07:09:28,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:09:28,889 INFO L225 Difference]: With dead ends: 3514 [2020-12-22 07:09:28,889 INFO L226 Difference]: Without dead ends: 2065 [2020-12-22 07:09:28,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:09:28,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2020-12-22 07:09:28,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 1472. [2020-12-22 07:09:28,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-22 07:09:29,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2150 transitions. [2020-12-22 07:09:29,002 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2150 transitions. Word has length 105 [2020-12-22 07:09:29,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:09:29,002 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2150 transitions. [2020-12-22 07:09:29,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:09:29,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2150 transitions. [2020-12-22 07:09:29,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:09:29,004 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:29,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:29,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:09:29,004 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:29,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:29,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1132331199, now seen corresponding path program 1 times [2020-12-22 07:09:29,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:29,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364527012] [2020-12-22 07:09:29,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:29,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:09:29,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364527012] [2020-12-22 07:09:29,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:29,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:09:29,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996750898] [2020-12-22 07:09:29,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:09:29,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:29,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:09:29,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:09:29,077 INFO L87 Difference]: Start difference. First operand 1472 states and 2150 transitions. Second operand 4 states. [2020-12-22 07:09:29,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:09:29,354 INFO L93 Difference]: Finished difference Result 3512 states and 5127 transitions. [2020-12-22 07:09:29,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:09:29,354 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-22 07:09:29,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:09:29,366 INFO L225 Difference]: With dead ends: 3512 [2020-12-22 07:09:29,366 INFO L226 Difference]: Without dead ends: 2064 [2020-12-22 07:09:29,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:09:29,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2064 states. [2020-12-22 07:09:29,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2064 to 1472. [2020-12-22 07:09:29,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-22 07:09:29,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2147 transitions. [2020-12-22 07:09:29,481 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2147 transitions. Word has length 105 [2020-12-22 07:09:29,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:09:29,481 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2147 transitions. [2020-12-22 07:09:29,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:09:29,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2147 transitions. [2020-12-22 07:09:29,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:09:29,483 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:29,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:29,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:09:29,483 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:29,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:29,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1595878147, now seen corresponding path program 1 times [2020-12-22 07:09:29,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:29,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148476030] [2020-12-22 07:09:29,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:29,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:09:29,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148476030] [2020-12-22 07:09:29,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:29,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:09:29,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766823767] [2020-12-22 07:09:29,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:09:29,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:29,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:09:29,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:09:29,555 INFO L87 Difference]: Start difference. First operand 1472 states and 2147 transitions. Second operand 4 states. [2020-12-22 07:09:29,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:09:29,844 INFO L93 Difference]: Finished difference Result 3510 states and 5117 transitions. [2020-12-22 07:09:29,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:09:29,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-22 07:09:29,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:09:29,855 INFO L225 Difference]: With dead ends: 3510 [2020-12-22 07:09:29,856 INFO L226 Difference]: Without dead ends: 2063 [2020-12-22 07:09:29,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:09:29,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2020-12-22 07:09:29,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 1472. [2020-12-22 07:09:29,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-22 07:09:29,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2144 transitions. [2020-12-22 07:09:29,976 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2144 transitions. Word has length 105 [2020-12-22 07:09:29,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:09:29,976 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2144 transitions. [2020-12-22 07:09:29,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:09:29,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2144 transitions. [2020-12-22 07:09:29,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:09:29,978 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:29,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:29,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:09:29,978 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:29,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:29,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1641251071, now seen corresponding path program 1 times [2020-12-22 07:09:29,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:29,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43397659] [2020-12-22 07:09:29,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:30,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:09:30,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43397659] [2020-12-22 07:09:30,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:30,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:09:30,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974860495] [2020-12-22 07:09:30,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:09:30,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:30,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:09:30,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:09:30,037 INFO L87 Difference]: Start difference. First operand 1472 states and 2144 transitions. Second operand 4 states. [2020-12-22 07:09:30,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:09:30,319 INFO L93 Difference]: Finished difference Result 3508 states and 5107 transitions. [2020-12-22 07:09:30,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:09:30,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-22 07:09:30,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:09:30,344 INFO L225 Difference]: With dead ends: 3508 [2020-12-22 07:09:30,345 INFO L226 Difference]: Without dead ends: 2062 [2020-12-22 07:09:30,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:09:30,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2020-12-22 07:09:30,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 1472. [2020-12-22 07:09:30,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-22 07:09:30,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2141 transitions. [2020-12-22 07:09:30,478 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2141 transitions. Word has length 105 [2020-12-22 07:09:30,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:09:30,479 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2141 transitions. [2020-12-22 07:09:30,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:09:30,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2141 transitions. [2020-12-22 07:09:30,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:09:30,480 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:30,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:30,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:09:30,481 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:30,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:30,482 INFO L82 PathProgramCache]: Analyzing trace with hash 498748605, now seen corresponding path program 1 times [2020-12-22 07:09:30,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:30,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867668983] [2020-12-22 07:09:30,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:09:30,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867668983] [2020-12-22 07:09:30,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:30,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:09:30,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983944057] [2020-12-22 07:09:30,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:09:30,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:30,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:09:30,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:09:30,535 INFO L87 Difference]: Start difference. First operand 1472 states and 2141 transitions. Second operand 4 states. [2020-12-22 07:09:30,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:09:30,813 INFO L93 Difference]: Finished difference Result 3506 states and 5097 transitions. [2020-12-22 07:09:30,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:09:30,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-22 07:09:30,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:09:30,819 INFO L225 Difference]: With dead ends: 3506 [2020-12-22 07:09:30,819 INFO L226 Difference]: Without dead ends: 2061 [2020-12-22 07:09:30,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:09:30,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2020-12-22 07:09:30,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 1472. [2020-12-22 07:09:30,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-22 07:09:30,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2138 transitions. [2020-12-22 07:09:30,935 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2138 transitions. Word has length 105 [2020-12-22 07:09:30,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:09:30,935 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2138 transitions. [2020-12-22 07:09:30,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:09:30,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2138 transitions. [2020-12-22 07:09:30,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:09:30,936 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:30,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:30,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:09:30,937 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:30,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:30,938 INFO L82 PathProgramCache]: Analyzing trace with hash 738988351, now seen corresponding path program 1 times [2020-12-22 07:09:30,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:30,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876708789] [2020-12-22 07:09:30,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:30,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:09:30,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876708789] [2020-12-22 07:09:30,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:30,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:09:30,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189985624] [2020-12-22 07:09:30,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:09:30,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:30,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:09:30,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:09:30,991 INFO L87 Difference]: Start difference. First operand 1472 states and 2138 transitions. Second operand 5 states. [2020-12-22 07:09:31,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:09:31,496 INFO L93 Difference]: Finished difference Result 5618 states and 8152 transitions. [2020-12-22 07:09:31,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:09:31,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-12-22 07:09:31,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:09:31,506 INFO L225 Difference]: With dead ends: 5618 [2020-12-22 07:09:31,506 INFO L226 Difference]: Without dead ends: 4180 [2020-12-22 07:09:31,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:09:31,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4180 states. [2020-12-22 07:09:31,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4180 to 1532. [2020-12-22 07:09:31,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1532 states. [2020-12-22 07:09:31,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 2198 transitions. [2020-12-22 07:09:31,661 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 2198 transitions. Word has length 105 [2020-12-22 07:09:31,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:09:31,661 INFO L481 AbstractCegarLoop]: Abstraction has 1532 states and 2198 transitions. [2020-12-22 07:09:31,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:09:31,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 2198 transitions. [2020-12-22 07:09:31,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:09:31,662 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:31,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:31,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 07:09:31,663 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:31,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:31,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1172054207, now seen corresponding path program 1 times [2020-12-22 07:09:31,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:31,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357922813] [2020-12-22 07:09:31,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:31,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:09:31,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357922813] [2020-12-22 07:09:31,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:31,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:09:31,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383489966] [2020-12-22 07:09:31,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:09:31,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:31,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:09:31,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:09:31,728 INFO L87 Difference]: Start difference. First operand 1532 states and 2198 transitions. Second operand 4 states. [2020-12-22 07:09:32,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:09:32,283 INFO L93 Difference]: Finished difference Result 5626 states and 8053 transitions. [2020-12-22 07:09:32,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:09:32,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-22 07:09:32,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:09:32,294 INFO L225 Difference]: With dead ends: 5626 [2020-12-22 07:09:32,294 INFO L226 Difference]: Without dead ends: 4123 [2020-12-22 07:09:32,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:09:32,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4123 states. [2020-12-22 07:09:32,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4123 to 3907. [2020-12-22 07:09:32,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3907 states. [2020-12-22 07:09:32,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3907 states to 3907 states and 5545 transitions. [2020-12-22 07:09:32,643 INFO L78 Accepts]: Start accepts. Automaton has 3907 states and 5545 transitions. Word has length 105 [2020-12-22 07:09:32,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:09:32,643 INFO L481 AbstractCegarLoop]: Abstraction has 3907 states and 5545 transitions. [2020-12-22 07:09:32,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:09:32,644 INFO L276 IsEmpty]: Start isEmpty. Operand 3907 states and 5545 transitions. [2020-12-22 07:09:32,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-22 07:09:32,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:32,646 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:32,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 07:09:32,647 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:32,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:32,647 INFO L82 PathProgramCache]: Analyzing trace with hash -104840646, now seen corresponding path program 1 times [2020-12-22 07:09:32,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:32,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195056203] [2020-12-22 07:09:32,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:09:32,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195056203] [2020-12-22 07:09:32,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:32,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:09:32,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843883368] [2020-12-22 07:09:32,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:09:32,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:32,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:09:32,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:09:32,701 INFO L87 Difference]: Start difference. First operand 3907 states and 5545 transitions. Second operand 5 states. [2020-12-22 07:09:33,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:09:33,429 INFO L93 Difference]: Finished difference Result 10274 states and 14632 transitions. [2020-12-22 07:09:33,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:09:33,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-12-22 07:09:33,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:09:33,443 INFO L225 Difference]: With dead ends: 10274 [2020-12-22 07:09:33,444 INFO L226 Difference]: Without dead ends: 6406 [2020-12-22 07:09:33,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:09:33,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6406 states. [2020-12-22 07:09:33,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6406 to 3964. [2020-12-22 07:09:33,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3964 states. [2020-12-22 07:09:33,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3964 states to 3964 states and 5569 transitions. [2020-12-22 07:09:33,805 INFO L78 Accepts]: Start accepts. Automaton has 3964 states and 5569 transitions. Word has length 123 [2020-12-22 07:09:33,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:09:33,805 INFO L481 AbstractCegarLoop]: Abstraction has 3964 states and 5569 transitions. [2020-12-22 07:09:33,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:09:33,805 INFO L276 IsEmpty]: Start isEmpty. Operand 3964 states and 5569 transitions. [2020-12-22 07:09:33,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-22 07:09:33,808 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:33,808 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:33,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 07:09:33,808 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:33,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:33,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1771642172, now seen corresponding path program 1 times [2020-12-22 07:09:33,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:33,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316892704] [2020-12-22 07:09:33,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:33,903 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:09:33,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316892704] [2020-12-22 07:09:33,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:33,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:09:33,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917257598] [2020-12-22 07:09:33,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:09:33,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:33,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:09:33,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:09:33,906 INFO L87 Difference]: Start difference. First operand 3964 states and 5569 transitions. Second operand 5 states. [2020-12-22 07:09:34,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:09:34,537 INFO L93 Difference]: Finished difference Result 8852 states and 12415 transitions. [2020-12-22 07:09:34,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:09:34,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-12-22 07:09:34,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:09:34,552 INFO L225 Difference]: With dead ends: 8852 [2020-12-22 07:09:34,552 INFO L226 Difference]: Without dead ends: 4934 [2020-12-22 07:09:34,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:09:34,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4934 states. [2020-12-22 07:09:34,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4934 to 3970. [2020-12-22 07:09:34,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3970 states. [2020-12-22 07:09:34,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3970 states to 3970 states and 5525 transitions. [2020-12-22 07:09:34,966 INFO L78 Accepts]: Start accepts. Automaton has 3970 states and 5525 transitions. Word has length 123 [2020-12-22 07:09:34,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:09:34,966 INFO L481 AbstractCegarLoop]: Abstraction has 3970 states and 5525 transitions. [2020-12-22 07:09:34,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:09:34,967 INFO L276 IsEmpty]: Start isEmpty. Operand 3970 states and 5525 transitions. [2020-12-22 07:09:34,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-22 07:09:34,968 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:34,968 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:34,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 07:09:34,969 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:34,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:34,969 INFO L82 PathProgramCache]: Analyzing trace with hash 2011881918, now seen corresponding path program 1 times [2020-12-22 07:09:34,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:34,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102171034] [2020-12-22 07:09:34,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:35,022 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:09:35,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102171034] [2020-12-22 07:09:35,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:35,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:09:35,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963901068] [2020-12-22 07:09:35,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:09:35,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:35,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:09:35,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:09:35,024 INFO L87 Difference]: Start difference. First operand 3970 states and 5525 transitions. Second operand 4 states. [2020-12-22 07:09:36,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:09:36,094 INFO L93 Difference]: Finished difference Result 14881 states and 20689 transitions. [2020-12-22 07:09:36,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:09:36,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-12-22 07:09:36,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:09:36,119 INFO L225 Difference]: With dead ends: 14881 [2020-12-22 07:09:36,120 INFO L226 Difference]: Without dead ends: 10959 [2020-12-22 07:09:36,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:09:36,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10959 states. [2020-12-22 07:09:37,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10959 to 10485. [2020-12-22 07:09:37,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10485 states. [2020-12-22 07:09:37,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10485 states to 10485 states and 14462 transitions. [2020-12-22 07:09:37,314 INFO L78 Accepts]: Start accepts. Automaton has 10485 states and 14462 transitions. Word has length 123 [2020-12-22 07:09:37,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:09:37,315 INFO L481 AbstractCegarLoop]: Abstraction has 10485 states and 14462 transitions. [2020-12-22 07:09:37,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:09:37,315 INFO L276 IsEmpty]: Start isEmpty. Operand 10485 states and 14462 transitions. [2020-12-22 07:09:37,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-22 07:09:37,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:37,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:37,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 07:09:37,318 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:37,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:37,319 INFO L82 PathProgramCache]: Analyzing trace with hash 157425991, now seen corresponding path program 1 times [2020-12-22 07:09:37,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:37,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458822525] [2020-12-22 07:09:37,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:37,382 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:09:37,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458822525] [2020-12-22 07:09:37,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:37,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:09:37,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911979442] [2020-12-22 07:09:37,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:09:37,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:37,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:09:37,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:09:37,386 INFO L87 Difference]: Start difference. First operand 10485 states and 14462 transitions. Second operand 5 states. [2020-12-22 07:09:38,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:09:38,667 INFO L93 Difference]: Finished difference Result 27008 states and 37512 transitions. [2020-12-22 07:09:38,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:09:38,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-12-22 07:09:38,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:09:38,699 INFO L225 Difference]: With dead ends: 27008 [2020-12-22 07:09:38,699 INFO L226 Difference]: Without dead ends: 16575 [2020-12-22 07:09:38,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:09:38,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16575 states. [2020-12-22 07:09:39,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16575 to 10638. [2020-12-22 07:09:39,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10638 states. [2020-12-22 07:09:39,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10638 states to 10638 states and 14528 transitions. [2020-12-22 07:09:39,645 INFO L78 Accepts]: Start accepts. Automaton has 10638 states and 14528 transitions. Word has length 127 [2020-12-22 07:09:39,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:09:39,646 INFO L481 AbstractCegarLoop]: Abstraction has 10638 states and 14528 transitions. [2020-12-22 07:09:39,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:09:39,646 INFO L276 IsEmpty]: Start isEmpty. Operand 10638 states and 14528 transitions. [2020-12-22 07:09:39,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-22 07:09:39,648 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:39,649 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:39,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 07:09:39,649 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:39,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:39,650 INFO L82 PathProgramCache]: Analyzing trace with hash 184491593, now seen corresponding path program 1 times [2020-12-22 07:09:39,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:39,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633073818] [2020-12-22 07:09:39,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:39,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:09:39,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633073818] [2020-12-22 07:09:39,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:39,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:09:39,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037052176] [2020-12-22 07:09:39,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:09:39,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:39,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:09:39,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:09:39,717 INFO L87 Difference]: Start difference. First operand 10638 states and 14528 transitions. Second operand 4 states. [2020-12-22 07:09:42,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:09:42,189 INFO L93 Difference]: Finished difference Result 40139 states and 54807 transitions. [2020-12-22 07:09:42,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:09:42,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-12-22 07:09:42,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:09:42,233 INFO L225 Difference]: With dead ends: 40139 [2020-12-22 07:09:42,234 INFO L226 Difference]: Without dead ends: 29555 [2020-12-22 07:09:42,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:09:42,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29555 states. [2020-12-22 07:09:44,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29555 to 28475. [2020-12-22 07:09:44,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28475 states. [2020-12-22 07:09:44,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28475 states to 28475 states and 38601 transitions. [2020-12-22 07:09:44,489 INFO L78 Accepts]: Start accepts. Automaton has 28475 states and 38601 transitions. Word has length 127 [2020-12-22 07:09:44,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:09:44,489 INFO L481 AbstractCegarLoop]: Abstraction has 28475 states and 38601 transitions. [2020-12-22 07:09:44,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:09:44,490 INFO L276 IsEmpty]: Start isEmpty. Operand 28475 states and 38601 transitions. [2020-12-22 07:09:44,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 07:09:44,494 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:44,494 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:44,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 07:09:44,494 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:44,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:44,495 INFO L82 PathProgramCache]: Analyzing trace with hash -88712638, now seen corresponding path program 1 times [2020-12-22 07:09:44,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:44,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220419082] [2020-12-22 07:09:44,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:44,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:09:44,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220419082] [2020-12-22 07:09:44,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:44,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:09:44,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281919754] [2020-12-22 07:09:44,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:09:44,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:44,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:09:44,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:09:44,554 INFO L87 Difference]: Start difference. First operand 28475 states and 38601 transitions. Second operand 5 states. [2020-12-22 07:09:48,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:09:48,235 INFO L93 Difference]: Finished difference Result 72614 states and 99223 transitions. [2020-12-22 07:09:48,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:09:48,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-12-22 07:09:48,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:09:48,282 INFO L225 Difference]: With dead ends: 72614 [2020-12-22 07:09:48,283 INFO L226 Difference]: Without dead ends: 44197 [2020-12-22 07:09:48,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:09:48,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44197 states. [2020-12-22 07:09:51,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44197 to 28886. [2020-12-22 07:09:51,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28886 states. [2020-12-22 07:09:51,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28886 states to 28886 states and 38781 transitions. [2020-12-22 07:09:51,065 INFO L78 Accepts]: Start accepts. Automaton has 28886 states and 38781 transitions. Word has length 131 [2020-12-22 07:09:51,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:09:51,066 INFO L481 AbstractCegarLoop]: Abstraction has 28886 states and 38781 transitions. [2020-12-22 07:09:51,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:09:51,066 INFO L276 IsEmpty]: Start isEmpty. Operand 28886 states and 38781 transitions. [2020-12-22 07:09:51,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 07:09:51,070 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:51,070 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:51,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 07:09:51,071 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:51,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:51,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1645391812, now seen corresponding path program 1 times [2020-12-22 07:09:51,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:51,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615765086] [2020-12-22 07:09:51,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:51,124 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:09:51,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615765086] [2020-12-22 07:09:51,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:51,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:09:51,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724431785] [2020-12-22 07:09:51,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:09:51,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:51,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:09:51,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:09:51,127 INFO L87 Difference]: Start difference. First operand 28886 states and 38781 transitions. Second operand 3 states. [2020-12-22 07:09:55,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:09:55,314 INFO L93 Difference]: Finished difference Result 83040 states and 111616 transitions. [2020-12-22 07:09:55,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:09:55,315 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2020-12-22 07:09:55,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:09:55,377 INFO L225 Difference]: With dead ends: 83040 [2020-12-22 07:09:55,377 INFO L226 Difference]: Without dead ends: 54221 [2020-12-22 07:09:55,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:09:55,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54221 states. [2020-12-22 07:09:59,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54221 to 54109. [2020-12-22 07:09:59,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54109 states. [2020-12-22 07:09:59,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54109 states to 54109 states and 72438 transitions. [2020-12-22 07:09:59,637 INFO L78 Accepts]: Start accepts. Automaton has 54109 states and 72438 transitions. Word has length 131 [2020-12-22 07:09:59,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:09:59,637 INFO L481 AbstractCegarLoop]: Abstraction has 54109 states and 72438 transitions. [2020-12-22 07:09:59,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:09:59,637 INFO L276 IsEmpty]: Start isEmpty. Operand 54109 states and 72438 transitions. [2020-12-22 07:09:59,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 07:09:59,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:09:59,647 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:09:59,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 07:09:59,647 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:09:59,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:09:59,648 INFO L82 PathProgramCache]: Analyzing trace with hash -512081211, now seen corresponding path program 1 times [2020-12-22 07:09:59,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:09:59,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489555095] [2020-12-22 07:09:59,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:09:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:09:59,702 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:09:59,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489555095] [2020-12-22 07:09:59,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:09:59,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:09:59,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21483793] [2020-12-22 07:09:59,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:09:59,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:09:59,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:09:59,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:09:59,704 INFO L87 Difference]: Start difference. First operand 54109 states and 72438 transitions. Second operand 5 states. [2020-12-22 07:10:07,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:10:07,215 INFO L93 Difference]: Finished difference Result 146256 states and 197672 transitions. [2020-12-22 07:10:07,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:10:07,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-12-22 07:10:07,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:10:07,480 INFO L225 Difference]: With dead ends: 146256 [2020-12-22 07:10:07,481 INFO L226 Difference]: Without dead ends: 92218 [2020-12-22 07:10:07,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:10:07,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92218 states. [2020-12-22 07:10:12,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92218 to 55210. [2020-12-22 07:10:12,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55210 states. [2020-12-22 07:10:12,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55210 states to 55210 states and 73225 transitions. [2020-12-22 07:10:12,604 INFO L78 Accepts]: Start accepts. Automaton has 55210 states and 73225 transitions. Word has length 131 [2020-12-22 07:10:12,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:10:12,604 INFO L481 AbstractCegarLoop]: Abstraction has 55210 states and 73225 transitions. [2020-12-22 07:10:12,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:10:12,604 INFO L276 IsEmpty]: Start isEmpty. Operand 55210 states and 73225 transitions. [2020-12-22 07:10:12,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 07:10:12,608 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:10:12,608 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:10:12,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 07:10:12,609 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:10:12,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:10:12,609 INFO L82 PathProgramCache]: Analyzing trace with hash -929477817, now seen corresponding path program 1 times [2020-12-22 07:10:12,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:10:12,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981808210] [2020-12-22 07:10:12,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:10:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:10:12,662 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:10:12,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981808210] [2020-12-22 07:10:12,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:10:12,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:10:12,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871304508] [2020-12-22 07:10:12,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:10:12,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:10:12,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:10:12,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:10:12,664 INFO L87 Difference]: Start difference. First operand 55210 states and 73225 transitions. Second operand 5 states. [2020-12-22 07:10:22,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:10:22,736 INFO L93 Difference]: Finished difference Result 178933 states and 240629 transitions. [2020-12-22 07:10:22,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:10:22,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-12-22 07:10:22,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:10:23,040 INFO L225 Difference]: With dead ends: 178933 [2020-12-22 07:10:23,041 INFO L226 Difference]: Without dead ends: 123801 [2020-12-22 07:10:23,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:10:23,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123801 states. [2020-12-22 07:10:28,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123801 to 57253. [2020-12-22 07:10:28,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57253 states. [2020-12-22 07:10:28,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57253 states to 57253 states and 75268 transitions. [2020-12-22 07:10:28,920 INFO L78 Accepts]: Start accepts. Automaton has 57253 states and 75268 transitions. Word has length 131 [2020-12-22 07:10:28,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:10:28,920 INFO L481 AbstractCegarLoop]: Abstraction has 57253 states and 75268 transitions. [2020-12-22 07:10:28,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:10:28,920 INFO L276 IsEmpty]: Start isEmpty. Operand 57253 states and 75268 transitions. [2020-12-22 07:10:28,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 07:10:28,924 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:10:28,925 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:10:28,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 07:10:28,925 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:10:28,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:10:28,926 INFO L82 PathProgramCache]: Analyzing trace with hash 331439433, now seen corresponding path program 1 times [2020-12-22 07:10:28,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:10:28,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111754974] [2020-12-22 07:10:28,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:10:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:10:28,982 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:10:28,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111754974] [2020-12-22 07:10:28,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:10:28,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:10:28,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020449518] [2020-12-22 07:10:28,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:10:28,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:10:28,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:10:28,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:10:28,984 INFO L87 Difference]: Start difference. First operand 57253 states and 75268 transitions. Second operand 4 states. [2020-12-22 07:10:37,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:10:37,618 INFO L93 Difference]: Finished difference Result 148934 states and 194504 transitions. [2020-12-22 07:10:37,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:10:37,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-12-22 07:10:37,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:10:37,727 INFO L225 Difference]: With dead ends: 148934 [2020-12-22 07:10:37,727 INFO L226 Difference]: Without dead ends: 91764 [2020-12-22 07:10:37,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:10:38,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91764 states. [2020-12-22 07:10:44,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91764 to 65659. [2020-12-22 07:10:44,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65659 states. [2020-12-22 07:10:44,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65659 states to 65659 states and 85074 transitions. [2020-12-22 07:10:44,330 INFO L78 Accepts]: Start accepts. Automaton has 65659 states and 85074 transitions. Word has length 131 [2020-12-22 07:10:44,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:10:44,330 INFO L481 AbstractCegarLoop]: Abstraction has 65659 states and 85074 transitions. [2020-12-22 07:10:44,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:10:44,330 INFO L276 IsEmpty]: Start isEmpty. Operand 65659 states and 85074 transitions. [2020-12-22 07:10:44,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 07:10:44,335 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:10:44,335 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:10:44,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 07:10:44,336 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:10:44,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:10:44,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1718224843, now seen corresponding path program 1 times [2020-12-22 07:10:44,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:10:44,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543640009] [2020-12-22 07:10:44,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:10:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:10:44,392 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:10:44,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543640009] [2020-12-22 07:10:44,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:10:44,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:10:44,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134060732] [2020-12-22 07:10:44,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:10:44,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:10:44,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:10:44,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:10:44,394 INFO L87 Difference]: Start difference. First operand 65659 states and 85074 transitions. Second operand 4 states. [2020-12-22 07:10:54,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:10:54,028 INFO L93 Difference]: Finished difference Result 161422 states and 208877 transitions. [2020-12-22 07:10:54,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:10:54,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-12-22 07:10:54,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:10:54,162 INFO L225 Difference]: With dead ends: 161422 [2020-12-22 07:10:54,163 INFO L226 Difference]: Without dead ends: 95918 [2020-12-22 07:10:54,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:10:54,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95918 states. [2020-12-22 07:11:00,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95918 to 65659. [2020-12-22 07:11:00,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65659 states. [2020-12-22 07:11:00,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65659 states to 65659 states and 84857 transitions. [2020-12-22 07:11:00,843 INFO L78 Accepts]: Start accepts. Automaton has 65659 states and 84857 transitions. Word has length 131 [2020-12-22 07:11:00,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:11:00,844 INFO L481 AbstractCegarLoop]: Abstraction has 65659 states and 84857 transitions. [2020-12-22 07:11:00,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:11:00,844 INFO L276 IsEmpty]: Start isEmpty. Operand 65659 states and 84857 transitions. [2020-12-22 07:11:00,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 07:11:00,849 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:11:00,849 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:11:00,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 07:11:00,849 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:11:00,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:11:00,850 INFO L82 PathProgramCache]: Analyzing trace with hash -2132841779, now seen corresponding path program 1 times [2020-12-22 07:11:00,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:11:00,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381330963] [2020-12-22 07:11:00,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:11:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:11:00,905 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:11:00,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381330963] [2020-12-22 07:11:00,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:11:00,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:11:00,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668880405] [2020-12-22 07:11:00,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:11:00,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:11:00,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:11:00,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:11:00,907 INFO L87 Difference]: Start difference. First operand 65659 states and 84857 transitions. Second operand 4 states. [2020-12-22 07:11:10,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:11:10,937 INFO L93 Difference]: Finished difference Result 161419 states and 208386 transitions. [2020-12-22 07:11:10,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:11:10,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-12-22 07:11:10,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:11:11,065 INFO L225 Difference]: With dead ends: 161419 [2020-12-22 07:11:11,065 INFO L226 Difference]: Without dead ends: 95918 [2020-12-22 07:11:11,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:11:11,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95918 states. [2020-12-22 07:11:17,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95918 to 65659. [2020-12-22 07:11:17,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65659 states. [2020-12-22 07:11:18,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65659 states to 65659 states and 84640 transitions. [2020-12-22 07:11:18,041 INFO L78 Accepts]: Start accepts. Automaton has 65659 states and 84640 transitions. Word has length 131 [2020-12-22 07:11:18,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:11:18,042 INFO L481 AbstractCegarLoop]: Abstraction has 65659 states and 84640 transitions. [2020-12-22 07:11:18,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:11:18,042 INFO L276 IsEmpty]: Start isEmpty. Operand 65659 states and 84640 transitions. [2020-12-22 07:11:18,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 07:11:18,046 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:11:18,046 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:11:18,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 07:11:18,047 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:11:18,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:11:18,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1681045259, now seen corresponding path program 1 times [2020-12-22 07:11:18,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:11:18,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035380406] [2020-12-22 07:11:18,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:11:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:11:18,104 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:11:18,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035380406] [2020-12-22 07:11:18,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:11:18,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:11:18,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651552998] [2020-12-22 07:11:18,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:11:18,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:11:18,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:11:18,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:11:18,106 INFO L87 Difference]: Start difference. First operand 65659 states and 84640 transitions. Second operand 4 states. [2020-12-22 07:11:28,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:11:28,273 INFO L93 Difference]: Finished difference Result 161418 states and 207897 transitions. [2020-12-22 07:11:28,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:11:28,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-12-22 07:11:28,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:11:28,388 INFO L225 Difference]: With dead ends: 161418 [2020-12-22 07:11:28,388 INFO L226 Difference]: Without dead ends: 95918 [2020-12-22 07:11:28,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:11:28,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95918 states. [2020-12-22 07:11:35,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95918 to 65659. [2020-12-22 07:11:35,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65659 states. [2020-12-22 07:11:35,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65659 states to 65659 states and 84423 transitions. [2020-12-22 07:11:35,348 INFO L78 Accepts]: Start accepts. Automaton has 65659 states and 84423 transitions. Word has length 131 [2020-12-22 07:11:35,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:11:35,349 INFO L481 AbstractCegarLoop]: Abstraction has 65659 states and 84423 transitions. [2020-12-22 07:11:35,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:11:35,349 INFO L276 IsEmpty]: Start isEmpty. Operand 65659 states and 84423 transitions. [2020-12-22 07:11:35,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 07:11:35,353 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:11:35,353 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:11:35,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 07:11:35,354 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:11:35,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:11:35,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1665526541, now seen corresponding path program 1 times [2020-12-22 07:11:35,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:11:35,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041780040] [2020-12-22 07:11:35,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:11:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:11:35,410 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:11:35,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041780040] [2020-12-22 07:11:35,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:11:35,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:11:35,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646744402] [2020-12-22 07:11:35,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:11:35,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:11:35,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:11:35,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:11:35,412 INFO L87 Difference]: Start difference. First operand 65659 states and 84423 transitions. Second operand 4 states. [2020-12-22 07:11:45,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:11:45,581 INFO L93 Difference]: Finished difference Result 159009 states and 204395 transitions. [2020-12-22 07:11:45,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:11:45,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-12-22 07:11:45,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:11:45,692 INFO L225 Difference]: With dead ends: 159009 [2020-12-22 07:11:45,692 INFO L226 Difference]: Without dead ends: 93510 [2020-12-22 07:11:45,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:11:45,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93510 states. [2020-12-22 07:11:53,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93510 to 64939. [2020-12-22 07:11:53,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64939 states. [2020-12-22 07:11:53,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64939 states to 64939 states and 83006 transitions. [2020-12-22 07:11:53,097 INFO L78 Accepts]: Start accepts. Automaton has 64939 states and 83006 transitions. Word has length 131 [2020-12-22 07:11:53,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:11:53,097 INFO L481 AbstractCegarLoop]: Abstraction has 64939 states and 83006 transitions. [2020-12-22 07:11:53,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:11:53,097 INFO L276 IsEmpty]: Start isEmpty. Operand 64939 states and 83006 transitions. [2020-12-22 07:11:53,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 07:11:53,101 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:11:53,101 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:11:53,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 07:11:53,101 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:11:53,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:11:53,102 INFO L82 PathProgramCache]: Analyzing trace with hash -690278709, now seen corresponding path program 1 times [2020-12-22 07:11:53,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:11:53,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398809730] [2020-12-22 07:11:53,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:11:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:11:53,307 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:11:53,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398809730] [2020-12-22 07:11:53,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:11:53,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:11:53,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151618417] [2020-12-22 07:11:53,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:11:53,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:11:53,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:11:53,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:11:53,310 INFO L87 Difference]: Start difference. First operand 64939 states and 83006 transitions. Second operand 4 states. [2020-12-22 07:12:04,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:04,865 INFO L93 Difference]: Finished difference Result 173653 states and 220529 transitions. [2020-12-22 07:12:04,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:12:04,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-12-22 07:12:04,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:05,015 INFO L225 Difference]: With dead ends: 173653 [2020-12-22 07:12:05,016 INFO L226 Difference]: Without dead ends: 108875 [2020-12-22 07:12:05,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:12:05,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108875 states.