/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr.8.1.ufo.BOUNDED-16.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:38:07,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:38:07,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:38:07,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 07:38:07,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 07:38:07,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 07:38:07,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 07:38:07,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 07:38:07,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 07:38:07,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 07:38:07,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 07:38:07,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 07:38:07,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:38:07,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:38:07,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:38:07,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:38:07,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:38:07,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:38:07,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:38:07,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:38:07,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:38:07,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:38:07,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:38:07,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:38:07,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:38:07,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:38:07,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:38:07,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:38:07,646 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:38:07,699 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:38:07,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:38:07,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:38:07,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:38:07,704 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:38:07,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:38:07,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:38:07,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:38:07,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:38:07,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:38:07,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:38:07,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:38:07,706 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:38:07,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:38:07,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:38:07,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:38:07,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:38:07,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:38:07,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:38:07,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:38:07,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:38:07,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:38:07,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:38:07,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:38:07,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:38:07,710 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:38:08,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:38:08,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:38:08,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:38:08,141 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:38:08,142 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:38:08,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.8.1.ufo.BOUNDED-16.pals.c [2020-12-22 07:38:08,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b7b6cab0/ff1584967dec4bab813753783bebe73e/FLAGe975e000d [2020-12-22 07:38:08,939 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:38:08,940 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.1.ufo.BOUNDED-16.pals.c [2020-12-22 07:38:08,959 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b7b6cab0/ff1584967dec4bab813753783bebe73e/FLAGe975e000d [2020-12-22 07:38:09,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b7b6cab0/ff1584967dec4bab813753783bebe73e [2020-12-22 07:38:09,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:38:09,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:38:09,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:38:09,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:38:09,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:38:09,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:38:09" (1/1) ... [2020-12-22 07:38:09,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a67fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:09, skipping insertion in model container [2020-12-22 07:38:09,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:38:09" (1/1) ... [2020-12-22 07:38:09,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:38:09,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:38:09,614 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.1.ufo.BOUNDED-16.pals.c[26490,26503] [2020-12-22 07:38:09,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:38:09,647 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:38:09,754 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.1.ufo.BOUNDED-16.pals.c[26490,26503] [2020-12-22 07:38:09,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:38:09,782 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:38:09,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:09 WrapperNode [2020-12-22 07:38:09,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:38:09,784 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:38:09,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:38:09,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:38:09,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:09" (1/1) ... [2020-12-22 07:38:09,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:09" (1/1) ... [2020-12-22 07:38:09,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:38:09,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:38:09,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:38:09,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:38:09,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:09" (1/1) ... [2020-12-22 07:38:09,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:09" (1/1) ... [2020-12-22 07:38:09,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:09" (1/1) ... [2020-12-22 07:38:09,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:09" (1/1) ... [2020-12-22 07:38:09,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:09" (1/1) ... [2020-12-22 07:38:09,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:09" (1/1) ... [2020-12-22 07:38:09,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:09" (1/1) ... [2020-12-22 07:38:09,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:38:09,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:38:09,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:38:09,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:38:09,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:09" (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 07:38:10,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:38:10,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:38:10,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:38:10,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:38:11,056 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:38:11,056 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2020-12-22 07:38:11,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:38:11 BoogieIcfgContainer [2020-12-22 07:38:11,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:38:11,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:38:11,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:38:11,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:38:11,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:38:09" (1/3) ... [2020-12-22 07:38:11,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41daaa40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:38:11, skipping insertion in model container [2020-12-22 07:38:11,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:09" (2/3) ... [2020-12-22 07:38:11,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41daaa40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:38:11, skipping insertion in model container [2020-12-22 07:38:11,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:38:11" (3/3) ... [2020-12-22 07:38:11,068 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.BOUNDED-16.pals.c [2020-12-22 07:38:11,075 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:38:11,081 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 07:38:11,101 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 07:38:11,129 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:38:11,130 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:38:11,130 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:38:11,130 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:38:11,130 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:38:11,130 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:38:11,131 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:38:11,131 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:38:11,152 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states. [2020-12-22 07:38:11,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 07:38:11,162 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:11,163 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] [2020-12-22 07:38:11,164 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:11,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:11,170 INFO L82 PathProgramCache]: Analyzing trace with hash -486996250, now seen corresponding path program 1 times [2020-12-22 07:38:11,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:11,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280320121] [2020-12-22 07:38:11,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:11,490 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 07:38:11,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280320121] [2020-12-22 07:38:11,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:11,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:38:11,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246782556] [2020-12-22 07:38:11,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 07:38:11,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:11,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 07:38:11,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:38:11,516 INFO L87 Difference]: Start difference. First operand 147 states. Second operand 2 states. [2020-12-22 07:38:11,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:11,552 INFO L93 Difference]: Finished difference Result 228 states and 384 transitions. [2020-12-22 07:38:11,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 07:38:11,554 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 45 [2020-12-22 07:38:11,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:11,568 INFO L225 Difference]: With dead ends: 228 [2020-12-22 07:38:11,568 INFO L226 Difference]: Without dead ends: 143 [2020-12-22 07:38:11,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:38:11,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-12-22 07:38:11,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-12-22 07:38:11,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-22 07:38:11,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 249 transitions. [2020-12-22 07:38:11,638 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 249 transitions. Word has length 45 [2020-12-22 07:38:11,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:11,639 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 249 transitions. [2020-12-22 07:38:11,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 07:38:11,639 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 249 transitions. [2020-12-22 07:38:11,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 07:38:11,644 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:11,644 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] [2020-12-22 07:38:11,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:38:11,647 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:11,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:11,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1858803548, now seen corresponding path program 1 times [2020-12-22 07:38:11,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:11,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324078632] [2020-12-22 07:38:11,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:11,866 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 07:38:11,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324078632] [2020-12-22 07:38:11,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:11,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:38:11,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507582813] [2020-12-22 07:38:11,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:38:11,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:11,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:38:11,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:38:11,872 INFO L87 Difference]: Start difference. First operand 143 states and 249 transitions. Second operand 5 states. [2020-12-22 07:38:12,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:12,039 INFO L93 Difference]: Finished difference Result 223 states and 374 transitions. [2020-12-22 07:38:12,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:38:12,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-12-22 07:38:12,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:12,042 INFO L225 Difference]: With dead ends: 223 [2020-12-22 07:38:12,042 INFO L226 Difference]: Without dead ends: 143 [2020-12-22 07:38:12,044 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 07:38:12,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-12-22 07:38:12,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-12-22 07:38:12,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-22 07:38:12,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 188 transitions. [2020-12-22 07:38:12,058 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 188 transitions. Word has length 45 [2020-12-22 07:38:12,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:12,059 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 188 transitions. [2020-12-22 07:38:12,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:38:12,059 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 188 transitions. [2020-12-22 07:38:12,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:12,064 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:12,064 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 07:38:12,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:38:12,065 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:12,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:12,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1176555156, now seen corresponding path program 1 times [2020-12-22 07:38:12,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:12,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15360580] [2020-12-22 07:38:12,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:12,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:38:12,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15360580] [2020-12-22 07:38:12,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:12,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:12,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780066336] [2020-12-22 07:38:12,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:12,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:12,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:12,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:12,320 INFO L87 Difference]: Start difference. First operand 143 states and 188 transitions. Second operand 3 states. [2020-12-22 07:38:12,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:12,349 INFO L93 Difference]: Finished difference Result 289 states and 420 transitions. [2020-12-22 07:38:12,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:12,350 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:38:12,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:12,353 INFO L225 Difference]: With dead ends: 289 [2020-12-22 07:38:12,353 INFO L226 Difference]: Without dead ends: 213 [2020-12-22 07:38:12,354 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 07:38:12,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-12-22 07:38:12,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2020-12-22 07:38:12,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-12-22 07:38:12,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 297 transitions. [2020-12-22 07:38:12,375 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 297 transitions. Word has length 105 [2020-12-22 07:38:12,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:12,375 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 297 transitions. [2020-12-22 07:38:12,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:12,376 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 297 transitions. [2020-12-22 07:38:12,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:12,380 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:12,380 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 07:38:12,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:38:12,381 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:12,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:12,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1701405430, now seen corresponding path program 1 times [2020-12-22 07:38:12,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:12,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667830406] [2020-12-22 07:38:12,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:12,540 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 07:38:12,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667830406] [2020-12-22 07:38:12,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:12,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:12,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96828782] [2020-12-22 07:38:12,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:12,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:12,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:12,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:12,549 INFO L87 Difference]: Start difference. First operand 211 states and 297 transitions. Second operand 3 states. [2020-12-22 07:38:12,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:12,588 INFO L93 Difference]: Finished difference Result 487 states and 737 transitions. [2020-12-22 07:38:12,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:12,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:38:12,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:12,592 INFO L225 Difference]: With dead ends: 487 [2020-12-22 07:38:12,592 INFO L226 Difference]: Without dead ends: 343 [2020-12-22 07:38:12,594 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 07:38:12,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-12-22 07:38:12,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 341. [2020-12-22 07:38:12,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-12-22 07:38:12,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 504 transitions. [2020-12-22 07:38:12,622 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 504 transitions. Word has length 105 [2020-12-22 07:38:12,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:12,623 INFO L481 AbstractCegarLoop]: Abstraction has 341 states and 504 transitions. [2020-12-22 07:38:12,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:12,623 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 504 transitions. [2020-12-22 07:38:12,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:12,625 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:12,625 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 07:38:12,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:38:12,626 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:12,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:12,626 INFO L82 PathProgramCache]: Analyzing trace with hash -179136962, now seen corresponding path program 1 times [2020-12-22 07:38:12,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:12,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486030815] [2020-12-22 07:38:12,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:12,828 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 07:38:12,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486030815] [2020-12-22 07:38:12,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:12,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:12,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790756455] [2020-12-22 07:38:12,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:12,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:12,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:12,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:12,833 INFO L87 Difference]: Start difference. First operand 341 states and 504 transitions. Second operand 3 states. [2020-12-22 07:38:12,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:12,896 INFO L93 Difference]: Finished difference Result 865 states and 1338 transitions. [2020-12-22 07:38:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:12,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:38:12,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:12,901 INFO L225 Difference]: With dead ends: 865 [2020-12-22 07:38:12,902 INFO L226 Difference]: Without dead ends: 591 [2020-12-22 07:38:12,903 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 07:38:12,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2020-12-22 07:38:12,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 589. [2020-12-22 07:38:12,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2020-12-22 07:38:12,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 896 transitions. [2020-12-22 07:38:12,963 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 896 transitions. Word has length 105 [2020-12-22 07:38:12,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:12,967 INFO L481 AbstractCegarLoop]: Abstraction has 589 states and 896 transitions. [2020-12-22 07:38:12,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:12,967 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 896 transitions. [2020-12-22 07:38:12,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:12,969 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:12,969 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 07:38:12,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:38:12,970 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:12,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:12,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1430042254, now seen corresponding path program 1 times [2020-12-22 07:38:12,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:12,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935690964] [2020-12-22 07:38:12,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:13,115 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 07:38:13,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935690964] [2020-12-22 07:38:13,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:13,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:13,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829952615] [2020-12-22 07:38:13,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:13,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:13,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:13,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:13,120 INFO L87 Difference]: Start difference. First operand 589 states and 896 transitions. Second operand 3 states. [2020-12-22 07:38:13,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:13,188 INFO L93 Difference]: Finished difference Result 1585 states and 2474 transitions. [2020-12-22 07:38:13,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:13,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:38:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:13,203 INFO L225 Difference]: With dead ends: 1585 [2020-12-22 07:38:13,203 INFO L226 Difference]: Without dead ends: 1063 [2020-12-22 07:38:13,205 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 07:38:13,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2020-12-22 07:38:13,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1061. [2020-12-22 07:38:13,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1061 states. [2020-12-22 07:38:13,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1636 transitions. [2020-12-22 07:38:13,259 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1636 transitions. Word has length 105 [2020-12-22 07:38:13,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:13,261 INFO L481 AbstractCegarLoop]: Abstraction has 1061 states and 1636 transitions. [2020-12-22 07:38:13,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:13,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1636 transitions. [2020-12-22 07:38:13,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:13,263 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:13,264 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 07:38:13,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:38:13,264 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:13,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:13,266 INFO L82 PathProgramCache]: Analyzing trace with hash 2119342312, now seen corresponding path program 1 times [2020-12-22 07:38:13,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:13,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429733228] [2020-12-22 07:38:13,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:13,440 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 07:38:13,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429733228] [2020-12-22 07:38:13,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:13,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:13,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251717801] [2020-12-22 07:38:13,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:13,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:13,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:13,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:13,443 INFO L87 Difference]: Start difference. First operand 1061 states and 1636 transitions. Second operand 3 states. [2020-12-22 07:38:13,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:13,517 INFO L93 Difference]: Finished difference Result 2953 states and 4614 transitions. [2020-12-22 07:38:13,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:13,517 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:38:13,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:13,528 INFO L225 Difference]: With dead ends: 2953 [2020-12-22 07:38:13,529 INFO L226 Difference]: Without dead ends: 1959 [2020-12-22 07:38:13,531 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 07:38:13,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2020-12-22 07:38:13,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1957. [2020-12-22 07:38:13,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2020-12-22 07:38:13,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3028 transitions. [2020-12-22 07:38:13,610 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3028 transitions. Word has length 105 [2020-12-22 07:38:13,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:13,610 INFO L481 AbstractCegarLoop]: Abstraction has 1957 states and 3028 transitions. [2020-12-22 07:38:13,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:13,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3028 transitions. [2020-12-22 07:38:13,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:13,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:13,616 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 07:38:13,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:38:13,616 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:13,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:13,618 INFO L82 PathProgramCache]: Analyzing trace with hash 179311454, now seen corresponding path program 1 times [2020-12-22 07:38:13,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:13,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689571401] [2020-12-22 07:38:13,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:13,718 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 07:38:13,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689571401] [2020-12-22 07:38:13,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:13,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:13,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986121615] [2020-12-22 07:38:13,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:13,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:13,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:13,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:13,721 INFO L87 Difference]: Start difference. First operand 1957 states and 3028 transitions. Second operand 3 states. [2020-12-22 07:38:13,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:13,871 INFO L93 Difference]: Finished difference Result 5545 states and 8630 transitions. [2020-12-22 07:38:13,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:13,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:38:13,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:13,896 INFO L225 Difference]: With dead ends: 5545 [2020-12-22 07:38:13,897 INFO L226 Difference]: Without dead ends: 3655 [2020-12-22 07:38:13,902 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 07:38:13,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3655 states. [2020-12-22 07:38:14,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3655 to 3653. [2020-12-22 07:38:14,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3653 states. [2020-12-22 07:38:14,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 5636 transitions. [2020-12-22 07:38:14,162 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 5636 transitions. Word has length 105 [2020-12-22 07:38:14,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:14,164 INFO L481 AbstractCegarLoop]: Abstraction has 3653 states and 5636 transitions. [2020-12-22 07:38:14,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:14,164 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 5636 transitions. [2020-12-22 07:38:14,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:14,167 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:14,169 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 07:38:14,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:38:14,170 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:14,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:14,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1414973228, now seen corresponding path program 1 times [2020-12-22 07:38:14,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:14,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122291079] [2020-12-22 07:38:14,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:14,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:14,399 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 07:38:14,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122291079] [2020-12-22 07:38:14,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:14,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:38:14,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694200327] [2020-12-22 07:38:14,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:38:14,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:14,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:38:14,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:38:14,410 INFO L87 Difference]: Start difference. First operand 3653 states and 5636 transitions. Second operand 6 states. [2020-12-22 07:38:14,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:14,895 INFO L93 Difference]: Finished difference Result 7239 states and 11205 transitions. [2020-12-22 07:38:14,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:38:14,896 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-12-22 07:38:14,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:14,915 INFO L225 Difference]: With dead ends: 7239 [2020-12-22 07:38:14,916 INFO L226 Difference]: Without dead ends: 3653 [2020-12-22 07:38:14,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:38:14,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3653 states. [2020-12-22 07:38:15,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3653 to 3653. [2020-12-22 07:38:15,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3653 states. [2020-12-22 07:38:15,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 5604 transitions. [2020-12-22 07:38:15,166 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 5604 transitions. Word has length 105 [2020-12-22 07:38:15,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:15,166 INFO L481 AbstractCegarLoop]: Abstraction has 3653 states and 5604 transitions. [2020-12-22 07:38:15,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:38:15,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 5604 transitions. [2020-12-22 07:38:15,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:15,167 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:15,168 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 07:38:15,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:38:15,168 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:15,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:15,169 INFO L82 PathProgramCache]: Analyzing trace with hash -905500138, now seen corresponding path program 1 times [2020-12-22 07:38:15,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:15,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460844668] [2020-12-22 07:38:15,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:15,290 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 07:38:15,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460844668] [2020-12-22 07:38:15,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:15,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:38:15,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889650877] [2020-12-22 07:38:15,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:38:15,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:15,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:38:15,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:38:15,293 INFO L87 Difference]: Start difference. First operand 3653 states and 5604 transitions. Second operand 6 states. [2020-12-22 07:38:15,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:15,683 INFO L93 Difference]: Finished difference Result 7239 states and 11141 transitions. [2020-12-22 07:38:15,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:38:15,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-12-22 07:38:15,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:15,702 INFO L225 Difference]: With dead ends: 7239 [2020-12-22 07:38:15,703 INFO L226 Difference]: Without dead ends: 3653 [2020-12-22 07:38:15,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:38:15,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3653 states. [2020-12-22 07:38:15,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3653 to 3653. [2020-12-22 07:38:15,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3653 states. [2020-12-22 07:38:15,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 5572 transitions. [2020-12-22 07:38:15,910 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 5572 transitions. Word has length 105 [2020-12-22 07:38:15,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:15,911 INFO L481 AbstractCegarLoop]: Abstraction has 3653 states and 5572 transitions. [2020-12-22 07:38:15,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:38:15,911 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 5572 transitions. [2020-12-22 07:38:15,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:15,912 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:15,912 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 07:38:15,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:38:15,912 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:15,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:15,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1180259752, now seen corresponding path program 1 times [2020-12-22 07:38:15,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:15,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844310561] [2020-12-22 07:38:15,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:16,142 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 07:38:16,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844310561] [2020-12-22 07:38:16,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:16,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:38:16,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412430362] [2020-12-22 07:38:16,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:38:16,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:16,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:38:16,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:38:16,146 INFO L87 Difference]: Start difference. First operand 3653 states and 5572 transitions. Second operand 10 states. [2020-12-22 07:38:19,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:19,588 INFO L93 Difference]: Finished difference Result 61029 states and 93652 transitions. [2020-12-22 07:38:19,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 07:38:19,589 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 105 [2020-12-22 07:38:19,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:19,772 INFO L225 Difference]: With dead ends: 61029 [2020-12-22 07:38:19,772 INFO L226 Difference]: Without dead ends: 57443 [2020-12-22 07:38:19,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2020-12-22 07:38:19,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57443 states. [2020-12-22 07:38:20,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57443 to 7237. [2020-12-22 07:38:20,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7237 states. [2020-12-22 07:38:20,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7237 states to 7237 states and 10948 transitions. [2020-12-22 07:38:20,999 INFO L78 Accepts]: Start accepts. Automaton has 7237 states and 10948 transitions. Word has length 105 [2020-12-22 07:38:20,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:21,000 INFO L481 AbstractCegarLoop]: Abstraction has 7237 states and 10948 transitions. [2020-12-22 07:38:21,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 07:38:21,000 INFO L276 IsEmpty]: Start isEmpty. Operand 7237 states and 10948 transitions. [2020-12-22 07:38:21,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 07:38:21,001 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:21,001 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, 1, 1] [2020-12-22 07:38:21,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:38:21,002 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:21,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:21,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1773942360, now seen corresponding path program 1 times [2020-12-22 07:38:21,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:21,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22336187] [2020-12-22 07:38:21,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:21,061 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 07:38:21,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22336187] [2020-12-22 07:38:21,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:21,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:21,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990164144] [2020-12-22 07:38:21,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:21,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:21,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:21,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:21,064 INFO L87 Difference]: Start difference. First operand 7237 states and 10948 transitions. Second operand 3 states. [2020-12-22 07:38:21,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:21,863 INFO L93 Difference]: Finished difference Result 18185 states and 27398 transitions. [2020-12-22 07:38:21,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:21,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-22 07:38:21,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:21,886 INFO L225 Difference]: With dead ends: 18185 [2020-12-22 07:38:21,886 INFO L226 Difference]: Without dead ends: 11015 [2020-12-22 07:38:21,896 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 07:38:21,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11015 states. [2020-12-22 07:38:22,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11015 to 11013. [2020-12-22 07:38:22,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11013 states. [2020-12-22 07:38:22,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11013 states to 11013 states and 16324 transitions. [2020-12-22 07:38:22,848 INFO L78 Accepts]: Start accepts. Automaton has 11013 states and 16324 transitions. Word has length 107 [2020-12-22 07:38:22,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:22,849 INFO L481 AbstractCegarLoop]: Abstraction has 11013 states and 16324 transitions. [2020-12-22 07:38:22,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:22,849 INFO L276 IsEmpty]: Start isEmpty. Operand 11013 states and 16324 transitions. [2020-12-22 07:38:22,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 07:38:22,850 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:22,850 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, 1, 1] [2020-12-22 07:38:22,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:38:22,851 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:22,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:22,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1707448848, now seen corresponding path program 1 times [2020-12-22 07:38:22,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:22,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004675685] [2020-12-22 07:38:22,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:23,490 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 07:38:23,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004675685] [2020-12-22 07:38:23,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:23,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:38:23,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638297061] [2020-12-22 07:38:23,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:38:23,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:23,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:38:23,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:38:23,493 INFO L87 Difference]: Start difference. First operand 11013 states and 16324 transitions. Second operand 10 states. [2020-12-22 07:38:25,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:25,514 INFO L93 Difference]: Finished difference Result 27403 states and 40727 transitions. [2020-12-22 07:38:25,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:38:25,514 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 107 [2020-12-22 07:38:25,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:25,542 INFO L225 Difference]: With dead ends: 27403 [2020-12-22 07:38:25,543 INFO L226 Difference]: Without dead ends: 16457 [2020-12-22 07:38:25,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-12-22 07:38:25,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16457 states. [2020-12-22 07:38:26,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16457 to 11013. [2020-12-22 07:38:26,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11013 states. [2020-12-22 07:38:26,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11013 states to 11013 states and 16260 transitions. [2020-12-22 07:38:26,316 INFO L78 Accepts]: Start accepts. Automaton has 11013 states and 16260 transitions. Word has length 107 [2020-12-22 07:38:26,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:26,316 INFO L481 AbstractCegarLoop]: Abstraction has 11013 states and 16260 transitions. [2020-12-22 07:38:26,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 07:38:26,317 INFO L276 IsEmpty]: Start isEmpty. Operand 11013 states and 16260 transitions. [2020-12-22 07:38:26,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 07:38:26,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:26,318 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, 1, 1] [2020-12-22 07:38:26,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:38:26,318 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:26,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:26,319 INFO L82 PathProgramCache]: Analyzing trace with hash 81465228, now seen corresponding path program 1 times [2020-12-22 07:38:26,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:26,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518650410] [2020-12-22 07:38:26,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:26,397 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 07:38:26,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518650410] [2020-12-22 07:38:26,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:26,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:26,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958539530] [2020-12-22 07:38:26,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:26,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:26,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:26,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:26,400 INFO L87 Difference]: Start difference. First operand 11013 states and 16260 transitions. Second operand 3 states. [2020-12-22 07:38:27,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:27,694 INFO L93 Difference]: Finished difference Result 31753 states and 46726 transitions. [2020-12-22 07:38:27,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:27,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-22 07:38:27,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:27,723 INFO L225 Difference]: With dead ends: 31753 [2020-12-22 07:38:27,724 INFO L226 Difference]: Without dead ends: 20807 [2020-12-22 07:38:27,739 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 07:38:27,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20807 states. [2020-12-22 07:38:29,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20807 to 20805. [2020-12-22 07:38:29,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20805 states. [2020-12-22 07:38:29,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20805 states to 20805 states and 30340 transitions. [2020-12-22 07:38:29,591 INFO L78 Accepts]: Start accepts. Automaton has 20805 states and 30340 transitions. Word has length 107 [2020-12-22 07:38:29,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:29,591 INFO L481 AbstractCegarLoop]: Abstraction has 20805 states and 30340 transitions. [2020-12-22 07:38:29,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:29,591 INFO L276 IsEmpty]: Start isEmpty. Operand 20805 states and 30340 transitions. [2020-12-22 07:38:29,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 07:38:29,592 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:29,592 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, 1, 1] [2020-12-22 07:38:29,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:38:29,592 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:29,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:29,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1328972844, now seen corresponding path program 1 times [2020-12-22 07:38:29,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:29,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836707108] [2020-12-22 07:38:29,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:29,669 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 07:38:29,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836707108] [2020-12-22 07:38:29,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:29,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:29,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283230875] [2020-12-22 07:38:29,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:29,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:29,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:29,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:29,672 INFO L87 Difference]: Start difference. First operand 20805 states and 30340 transitions. Second operand 3 states. [2020-12-22 07:38:32,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:32,320 INFO L93 Difference]: Finished difference Result 59977 states and 87046 transitions. [2020-12-22 07:38:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:32,321 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-22 07:38:32,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:32,360 INFO L225 Difference]: With dead ends: 59977 [2020-12-22 07:38:32,360 INFO L226 Difference]: Without dead ends: 39239 [2020-12-22 07:38:32,388 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 07:38:32,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39239 states. [2020-12-22 07:38:35,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39239 to 39237. [2020-12-22 07:38:35,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39237 states. [2020-12-22 07:38:35,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39237 states to 39237 states and 56388 transitions. [2020-12-22 07:38:35,641 INFO L78 Accepts]: Start accepts. Automaton has 39237 states and 56388 transitions. Word has length 107 [2020-12-22 07:38:35,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:35,727 INFO L481 AbstractCegarLoop]: Abstraction has 39237 states and 56388 transitions. [2020-12-22 07:38:35,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:35,728 INFO L276 IsEmpty]: Start isEmpty. Operand 39237 states and 56388 transitions. [2020-12-22 07:38:35,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 07:38:35,729 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:35,729 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, 1, 1, 1] [2020-12-22 07:38:35,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:38:35,729 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:35,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:35,730 INFO L82 PathProgramCache]: Analyzing trace with hash 892169983, now seen corresponding path program 1 times [2020-12-22 07:38:35,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:35,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773523528] [2020-12-22 07:38:35,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:35,813 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 07:38:35,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773523528] [2020-12-22 07:38:35,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:35,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:35,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212482052] [2020-12-22 07:38:35,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:35,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:35,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:35,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:35,815 INFO L87 Difference]: Start difference. First operand 39237 states and 56388 transitions. Second operand 3 states. [2020-12-22 07:38:39,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:39,232 INFO L93 Difference]: Finished difference Result 90571 states and 130504 transitions. [2020-12-22 07:38:39,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:39,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-22 07:38:39,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:39,278 INFO L225 Difference]: With dead ends: 90571 [2020-12-22 07:38:39,278 INFO L226 Difference]: Without dead ends: 51401 [2020-12-22 07:38:39,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:39,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51401 states. [2020-12-22 07:38:42,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51401 to 51399. [2020-12-22 07:38:42,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51399 states. [2020-12-22 07:38:43,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51399 states to 51399 states and 73798 transitions. [2020-12-22 07:38:43,018 INFO L78 Accepts]: Start accepts. Automaton has 51399 states and 73798 transitions. Word has length 108 [2020-12-22 07:38:43,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:43,018 INFO L481 AbstractCegarLoop]: Abstraction has 51399 states and 73798 transitions. [2020-12-22 07:38:43,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:43,018 INFO L276 IsEmpty]: Start isEmpty. Operand 51399 states and 73798 transitions. [2020-12-22 07:38:43,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 07:38:43,019 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:43,019 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, 1, 1, 1] [2020-12-22 07:38:43,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 07:38:43,020 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:43,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:43,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1806029504, now seen corresponding path program 1 times [2020-12-22 07:38:43,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:43,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966146323] [2020-12-22 07:38:43,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:43,136 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 07:38:43,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966146323] [2020-12-22 07:38:43,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:43,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 07:38:43,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436679180] [2020-12-22 07:38:43,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:38:43,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:43,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:38:43,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:38:43,138 INFO L87 Difference]: Start difference. First operand 51399 states and 73798 transitions. Second operand 8 states. [2020-12-22 07:38:49,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:49,440 INFO L93 Difference]: Finished difference Result 81265 states and 116218 transitions. [2020-12-22 07:38:49,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:38:49,441 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2020-12-22 07:38:49,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:49,532 INFO L225 Difference]: With dead ends: 81265 [2020-12-22 07:38:49,532 INFO L226 Difference]: Without dead ends: 81263 [2020-12-22 07:38:49,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:38:49,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81263 states. [2020-12-22 07:38:54,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81263 to 52167. [2020-12-22 07:38:54,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52167 states. [2020-12-22 07:38:54,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52167 states to 52167 states and 74182 transitions. [2020-12-22 07:38:54,113 INFO L78 Accepts]: Start accepts. Automaton has 52167 states and 74182 transitions. Word has length 108 [2020-12-22 07:38:54,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:54,113 INFO L481 AbstractCegarLoop]: Abstraction has 52167 states and 74182 transitions. [2020-12-22 07:38:54,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:38:54,114 INFO L276 IsEmpty]: Start isEmpty. Operand 52167 states and 74182 transitions. [2020-12-22 07:38:54,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 07:38:54,137 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:54,138 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:54,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 07:38:54,138 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:54,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:54,139 INFO L82 PathProgramCache]: Analyzing trace with hash 150223880, now seen corresponding path program 1 times [2020-12-22 07:38:54,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:54,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711732829] [2020-12-22 07:38:54,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:54,390 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 07:38:54,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711732829] [2020-12-22 07:38:54,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:54,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:38:54,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350669757] [2020-12-22 07:38:54,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:38:54,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:54,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:38:54,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:38:54,397 INFO L87 Difference]: Start difference. First operand 52167 states and 74182 transitions. Second operand 10 states. [2020-12-22 07:39:25,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:39:25,862 INFO L93 Difference]: Finished difference Result 482649 states and 686031 transitions. [2020-12-22 07:39:25,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:39:25,862 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 148 [2020-12-22 07:39:25,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:39:26,725 INFO L225 Difference]: With dead ends: 482649 [2020-12-22 07:39:26,726 INFO L226 Difference]: Without dead ends: 430551 [2020-12-22 07:39:26,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:39:27,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430551 states. [2020-12-22 07:39:38,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430551 to 104263. [2020-12-22 07:39:38,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104263 states. [2020-12-22 07:39:38,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104263 states to 104263 states and 147782 transitions. [2020-12-22 07:39:38,651 INFO L78 Accepts]: Start accepts. Automaton has 104263 states and 147782 transitions. Word has length 148 [2020-12-22 07:39:38,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:39:38,651 INFO L481 AbstractCegarLoop]: Abstraction has 104263 states and 147782 transitions. [2020-12-22 07:39:38,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 07:39:38,652 INFO L276 IsEmpty]: Start isEmpty. Operand 104263 states and 147782 transitions. [2020-12-22 07:39:38,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 07:39:38,676 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:39:38,677 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:39:38,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 07:39:38,677 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:39:38,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:39:38,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1397731496, now seen corresponding path program 1 times [2020-12-22 07:39:38,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:39:38,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256884531] [2020-12-22 07:39:38,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:39:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:39:39,123 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 07:39:39,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256884531] [2020-12-22 07:39:39,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:39:39,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:39:39,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496129414] [2020-12-22 07:39:39,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:39:39,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:39:39,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:39:39,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:39:39,129 INFO L87 Difference]: Start difference. First operand 104263 states and 147782 transitions. Second operand 10 states. [2020-12-22 07:40:17,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:40:17,676 INFO L93 Difference]: Finished difference Result 534745 states and 759631 transitions. [2020-12-22 07:40:17,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:40:17,677 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 148 [2020-12-22 07:40:17,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:40:18,687 INFO L225 Difference]: With dead ends: 534745 [2020-12-22 07:40:18,687 INFO L226 Difference]: Without dead ends: 482647 [2020-12-22 07:40:18,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:40:19,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482647 states. [2020-12-22 07:40:37,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482647 to 182215. [2020-12-22 07:40:37,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182215 states. [2020-12-22 07:40:38,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182215 states to 182215 states and 257606 transitions. [2020-12-22 07:40:38,047 INFO L78 Accepts]: Start accepts. Automaton has 182215 states and 257606 transitions. Word has length 148 [2020-12-22 07:40:38,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:40:38,048 INFO L481 AbstractCegarLoop]: Abstraction has 182215 states and 257606 transitions. [2020-12-22 07:40:38,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 07:40:38,048 INFO L276 IsEmpty]: Start isEmpty. Operand 182215 states and 257606 transitions. [2020-12-22 07:40:38,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 07:40:38,082 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:40:38,082 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:40:38,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 07:40:38,083 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:40:38,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:40:38,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1427802818, now seen corresponding path program 1 times [2020-12-22 07:40:38,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:40:38,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441685580] [2020-12-22 07:40:38,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:40:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:40:38,716 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 07:40:38,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441685580] [2020-12-22 07:40:38,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:40:38,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:40:38,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314085419] [2020-12-22 07:40:38,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:40:38,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:40:38,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:40:38,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:40:38,718 INFO L87 Difference]: Start difference. First operand 182215 states and 257606 transitions. Second operand 10 states.