/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 23:32:30,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 23:32:30,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 23:32:31,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-09 23:32:31,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 23:32:31,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 23:32:31,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 23:32:31,104 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-09 23:32:31,139 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 23:32:31,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 23:32:31,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 23:32:31,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 23:32:31,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 23:32:31,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 23:32:31,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 23:32:31,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 23:32:31,142 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 23:32:31,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 23:32:31,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 23:32:31,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 23:32:31,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 23:32:31,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 23:32:31,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 23:32:31,143 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 23:32:31,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 23:32:31,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 23:32:31,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 23:32:31,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 23:32:31,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 23:32:31,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:32:31,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 23:32:31,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 23:32:31,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 23:32:31,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 23:32:31,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 23:32:31,145 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 23:32:31,145 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 23:32:31,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 23:32:31,145 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 23:32:31,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 23:32:31,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 23:32:31,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 23:32:31,371 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 23:32:31,371 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 23:32:31,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label50.c [2022-01-09 23:32:31,428 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61ebd793e/19efc40364be48d59607228afa604f5b/FLAGb4f0f74f4 [2022-01-09 23:32:32,004 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 23:32:32,004 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label50.c [2022-01-09 23:32:32,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61ebd793e/19efc40364be48d59607228afa604f5b/FLAGb4f0f74f4 [2022-01-09 23:32:32,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61ebd793e/19efc40364be48d59607228afa604f5b [2022-01-09 23:32:32,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 23:32:32,416 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 23:32:32,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 23:32:32,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 23:32:32,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 23:32:32,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:32:32" (1/1) ... [2022-01-09 23:32:32,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c442050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:32:32, skipping insertion in model container [2022-01-09 23:32:32,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:32:32" (1/1) ... [2022-01-09 23:32:32,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 23:32:32,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 23:32:33,026 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label50.c[55003,55016] [2022-01-09 23:32:33,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:32:33,069 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 23:32:33,238 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label50.c[55003,55016] [2022-01-09 23:32:33,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:32:33,268 INFO L208 MainTranslator]: Completed translation [2022-01-09 23:32:33,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:32:33 WrapperNode [2022-01-09 23:32:33,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 23:32:33,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 23:32:33,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 23:32:33,270 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 23:32:33,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:32:33" (1/1) ... [2022-01-09 23:32:33,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:32:33" (1/1) ... [2022-01-09 23:32:33,394 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2022-01-09 23:32:33,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 23:32:33,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 23:32:33,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 23:32:33,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 23:32:33,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:32:33" (1/1) ... [2022-01-09 23:32:33,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:32:33" (1/1) ... [2022-01-09 23:32:33,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:32:33" (1/1) ... [2022-01-09 23:32:33,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:32:33" (1/1) ... [2022-01-09 23:32:33,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:32:33" (1/1) ... [2022-01-09 23:32:33,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:32:33" (1/1) ... [2022-01-09 23:32:33,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:32:33" (1/1) ... [2022-01-09 23:32:33,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 23:32:33,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 23:32:33,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 23:32:33,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 23:32:33,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:32:33" (1/1) ... [2022-01-09 23:32:33,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:32:33,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:32:33,528 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-09 23:32:33,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-09 23:32:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 23:32:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 23:32:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 23:32:33,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 23:32:33,683 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 23:32:33,685 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 23:32:35,054 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 23:32:35,063 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 23:32:35,063 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-09 23:32:35,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:32:35 BoogieIcfgContainer [2022-01-09 23:32:35,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 23:32:35,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 23:32:35,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 23:32:35,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 23:32:35,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 11:32:32" (1/3) ... [2022-01-09 23:32:35,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c06afb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:32:35, skipping insertion in model container [2022-01-09 23:32:35,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:32:33" (2/3) ... [2022-01-09 23:32:35,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c06afb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:32:35, skipping insertion in model container [2022-01-09 23:32:35,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:32:35" (3/3) ... [2022-01-09 23:32:35,072 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label50.c [2022-01-09 23:32:35,076 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 23:32:35,076 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 23:32:35,124 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 23:32:35,131 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-09 23:32:35,131 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 23:32:35,148 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:35,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-09 23:32:35,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:32:35,160 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:32:35,161 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:32:35,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:32:35,165 INFO L85 PathProgramCache]: Analyzing trace with hash 131030986, now seen corresponding path program 1 times [2022-01-09 23:32:35,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:32:35,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194800048] [2022-01-09 23:32:35,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:35,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:32:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:35,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:32:35,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:32:35,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194800048] [2022-01-09 23:32:35,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194800048] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:32:35,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:32:35,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:32:35,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394279520] [2022-01-09 23:32:35,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:32:35,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:32:35,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:32:35,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:32:35,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:32:35,683 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:36,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:32:36,720 INFO L93 Difference]: Finished difference Result 857 states and 1498 transitions. [2022-01-09 23:32:36,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:32:36,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2022-01-09 23:32:36,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:32:36,743 INFO L225 Difference]: With dead ends: 857 [2022-01-09 23:32:36,743 INFO L226 Difference]: Without dead ends: 462 [2022-01-09 23:32:36,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:32:36,749 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 134 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:32:36,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 187 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-09 23:32:36,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-01-09 23:32:36,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 460. [2022-01-09 23:32:36,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.5381263616557734) internal successors, (706), 459 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:36,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 706 transitions. [2022-01-09 23:32:36,802 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 706 transitions. Word has length 154 [2022-01-09 23:32:36,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:32:36,803 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 706 transitions. [2022-01-09 23:32:36,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:36,803 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 706 transitions. [2022-01-09 23:32:36,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-09 23:32:36,806 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:32:36,806 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:32:36,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-09 23:32:36,807 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:32:36,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:32:36,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1138973865, now seen corresponding path program 1 times [2022-01-09 23:32:36,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:32:36,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764022135] [2022-01-09 23:32:36,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:36,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:32:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:36,960 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:32:36,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:32:36,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764022135] [2022-01-09 23:32:36,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764022135] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:32:36,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:32:36,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:32:36,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099848638] [2022-01-09 23:32:36,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:32:36,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:32:36,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:32:36,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:32:36,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:32:36,966 INFO L87 Difference]: Start difference. First operand 460 states and 706 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:37,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:32:37,674 INFO L93 Difference]: Finished difference Result 1344 states and 2079 transitions. [2022-01-09 23:32:37,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:32:37,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2022-01-09 23:32:37,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:32:37,684 INFO L225 Difference]: With dead ends: 1344 [2022-01-09 23:32:37,684 INFO L226 Difference]: Without dead ends: 886 [2022-01-09 23:32:37,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:32:37,688 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-09 23:32:37,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 92 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-09 23:32:37,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2022-01-09 23:32:37,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 870. [2022-01-09 23:32:37,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 1.5120828538550057) internal successors, (1314), 869 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:37,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1314 transitions. [2022-01-09 23:32:37,729 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1314 transitions. Word has length 162 [2022-01-09 23:32:37,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:32:37,730 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 1314 transitions. [2022-01-09 23:32:37,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:37,730 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1314 transitions. [2022-01-09 23:32:37,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-09 23:32:37,735 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:32:37,735 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:32:37,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-09 23:32:37,736 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:32:37,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:32:37,736 INFO L85 PathProgramCache]: Analyzing trace with hash 504793616, now seen corresponding path program 1 times [2022-01-09 23:32:37,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:32:37,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632797985] [2022-01-09 23:32:37,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:37,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:32:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-09 23:32:37,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:32:37,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632797985] [2022-01-09 23:32:37,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632797985] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:32:37,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:32:37,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 23:32:37,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503883205] [2022-01-09 23:32:37,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:32:37,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:32:37,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:32:37,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:32:37,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:32:37,818 INFO L87 Difference]: Start difference. First operand 870 states and 1314 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:38,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:32:38,519 INFO L93 Difference]: Finished difference Result 2554 states and 3869 transitions. [2022-01-09 23:32:38,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:32:38,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2022-01-09 23:32:38,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:32:38,526 INFO L225 Difference]: With dead ends: 2554 [2022-01-09 23:32:38,526 INFO L226 Difference]: Without dead ends: 1686 [2022-01-09 23:32:38,527 INFO L932 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 [2022-01-09 23:32:38,531 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 232 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-09 23:32:38,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 417 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-09 23:32:38,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2022-01-09 23:32:38,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1684. [2022-01-09 23:32:38,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.3363042186571599) internal successors, (2249), 1683 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:38,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2249 transitions. [2022-01-09 23:32:38,569 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2249 transitions. Word has length 174 [2022-01-09 23:32:38,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:32:38,571 INFO L470 AbstractCegarLoop]: Abstraction has 1684 states and 2249 transitions. [2022-01-09 23:32:38,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:38,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2249 transitions. [2022-01-09 23:32:38,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-09 23:32:38,576 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:32:38,577 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:32:38,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-09 23:32:38,578 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:32:38,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:32:38,578 INFO L85 PathProgramCache]: Analyzing trace with hash -113082131, now seen corresponding path program 1 times [2022-01-09 23:32:38,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:32:38,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170169256] [2022-01-09 23:32:38,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:38,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:32:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:38,663 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:32:38,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:32:38,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170169256] [2022-01-09 23:32:38,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170169256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:32:38,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:32:38,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:32:38,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876408065] [2022-01-09 23:32:38,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:32:38,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:32:38,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:32:38,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:32:38,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:32:38,666 INFO L87 Difference]: Start difference. First operand 1684 states and 2249 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:39,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:32:39,316 INFO L93 Difference]: Finished difference Result 5017 states and 6707 transitions. [2022-01-09 23:32:39,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:32:39,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-01-09 23:32:39,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:32:39,328 INFO L225 Difference]: With dead ends: 5017 [2022-01-09 23:32:39,328 INFO L226 Difference]: Without dead ends: 3335 [2022-01-09 23:32:39,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:32:39,339 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 259 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-09 23:32:39,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 123 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-09 23:32:39,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3335 states. [2022-01-09 23:32:39,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3335 to 3326. [2022-01-09 23:32:39,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3326 states, 3325 states have (on average 1.3230075187969925) internal successors, (4399), 3325 states have internal predecessors, (4399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:39,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3326 states to 3326 states and 4399 transitions. [2022-01-09 23:32:39,413 INFO L78 Accepts]: Start accepts. Automaton has 3326 states and 4399 transitions. Word has length 177 [2022-01-09 23:32:39,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:32:39,414 INFO L470 AbstractCegarLoop]: Abstraction has 3326 states and 4399 transitions. [2022-01-09 23:32:39,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:39,414 INFO L276 IsEmpty]: Start isEmpty. Operand 3326 states and 4399 transitions. [2022-01-09 23:32:39,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-09 23:32:39,420 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:32:39,420 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:32:39,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-09 23:32:39,421 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:32:39,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:32:39,423 INFO L85 PathProgramCache]: Analyzing trace with hash -473018795, now seen corresponding path program 1 times [2022-01-09 23:32:39,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:32:39,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649832856] [2022-01-09 23:32:39,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:39,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:32:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:39,506 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:32:39,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:32:39,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649832856] [2022-01-09 23:32:39,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649832856] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:32:39,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:32:39,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:32:39,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848394881] [2022-01-09 23:32:39,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:32:39,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:32:39,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:32:39,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:32:39,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:32:39,509 INFO L87 Difference]: Start difference. First operand 3326 states and 4399 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:40,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:32:40,195 INFO L93 Difference]: Finished difference Result 9928 states and 13145 transitions. [2022-01-09 23:32:40,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:32:40,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2022-01-09 23:32:40,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:32:40,216 INFO L225 Difference]: With dead ends: 9928 [2022-01-09 23:32:40,217 INFO L226 Difference]: Without dead ends: 6604 [2022-01-09 23:32:40,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:32:40,222 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 219 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-09 23:32:40,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 167 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-09 23:32:40,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6604 states. [2022-01-09 23:32:40,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6604 to 5768. [2022-01-09 23:32:40,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5767 states have (on average 1.3370903415987516) internal successors, (7711), 5767 states have internal predecessors, (7711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:40,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 7711 transitions. [2022-01-09 23:32:40,369 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 7711 transitions. Word has length 180 [2022-01-09 23:32:40,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:32:40,370 INFO L470 AbstractCegarLoop]: Abstraction has 5768 states and 7711 transitions. [2022-01-09 23:32:40,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:40,370 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 7711 transitions. [2022-01-09 23:32:40,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-09 23:32:40,379 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:32:40,379 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:32:40,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-09 23:32:40,379 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:32:40,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:32:40,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1369183816, now seen corresponding path program 1 times [2022-01-09 23:32:40,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:32:40,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696568513] [2022-01-09 23:32:40,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:40,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:32:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:40,460 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-09 23:32:40,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:32:40,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696568513] [2022-01-09 23:32:40,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696568513] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:32:40,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:32:40,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 23:32:40,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232984093] [2022-01-09 23:32:40,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:32:40,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:32:40,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:32:40,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:32:40,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:32:40,462 INFO L87 Difference]: Start difference. First operand 5768 states and 7711 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:41,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:32:41,208 INFO L93 Difference]: Finished difference Result 14591 states and 19420 transitions. [2022-01-09 23:32:41,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:32:41,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2022-01-09 23:32:41,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:32:41,237 INFO L225 Difference]: With dead ends: 14591 [2022-01-09 23:32:41,237 INFO L226 Difference]: Without dead ends: 8825 [2022-01-09 23:32:41,245 INFO L932 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 [2022-01-09 23:32:41,246 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 202 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-09 23:32:41,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 421 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-09 23:32:41,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8825 states. [2022-01-09 23:32:41,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8825 to 8821. [2022-01-09 23:32:41,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8821 states, 8820 states have (on average 1.2786848072562358) internal successors, (11278), 8820 states have internal predecessors, (11278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:41,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8821 states to 8821 states and 11278 transitions. [2022-01-09 23:32:41,403 INFO L78 Accepts]: Start accepts. Automaton has 8821 states and 11278 transitions. Word has length 189 [2022-01-09 23:32:41,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:32:41,404 INFO L470 AbstractCegarLoop]: Abstraction has 8821 states and 11278 transitions. [2022-01-09 23:32:41,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:41,404 INFO L276 IsEmpty]: Start isEmpty. Operand 8821 states and 11278 transitions. [2022-01-09 23:32:41,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-01-09 23:32:41,416 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:32:41,416 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:32:41,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-09 23:32:41,417 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:32:41,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:32:41,417 INFO L85 PathProgramCache]: Analyzing trace with hash -2041133386, now seen corresponding path program 1 times [2022-01-09 23:32:41,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:32:41,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114598179] [2022-01-09 23:32:41,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:41,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:32:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:41,550 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:32:41,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:32:41,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114598179] [2022-01-09 23:32:41,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114598179] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:32:41,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279515976] [2022-01-09 23:32:41,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:41,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:32:41,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:32:41,556 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:32:41,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-09 23:32:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:41,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-09 23:32:41,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:32:42,146 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-01-09 23:32:42,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:32:42,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279515976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:32:42,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-09 23:32:42,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-01-09 23:32:42,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484446340] [2022-01-09 23:32:42,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:32:42,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:32:42,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:32:42,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:32:42,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:32:42,149 INFO L87 Difference]: Start difference. First operand 8821 states and 11278 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:42,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:32:42,843 INFO L93 Difference]: Finished difference Result 22147 states and 28843 transitions. [2022-01-09 23:32:42,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:32:42,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2022-01-09 23:32:42,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:32:42,895 INFO L225 Difference]: With dead ends: 22147 [2022-01-09 23:32:42,896 INFO L226 Difference]: Without dead ends: 13328 [2022-01-09 23:32:42,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:32:42,910 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 115 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-09 23:32:42,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 134 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-09 23:32:42,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13328 states. [2022-01-09 23:32:43,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13328 to 13316. [2022-01-09 23:32:43,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13316 states, 13315 states have (on average 1.282838903492302) internal successors, (17081), 13315 states have internal predecessors, (17081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:43,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13316 states to 13316 states and 17081 transitions. [2022-01-09 23:32:43,211 INFO L78 Accepts]: Start accepts. Automaton has 13316 states and 17081 transitions. Word has length 191 [2022-01-09 23:32:43,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:32:43,211 INFO L470 AbstractCegarLoop]: Abstraction has 13316 states and 17081 transitions. [2022-01-09 23:32:43,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:43,212 INFO L276 IsEmpty]: Start isEmpty. Operand 13316 states and 17081 transitions. [2022-01-09 23:32:43,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-01-09 23:32:43,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:32:43,229 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2022-01-09 23:32:43,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-09 23:32:43,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:32:43,452 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:32:43,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:32:43,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1544477593, now seen corresponding path program 1 times [2022-01-09 23:32:43,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:32:43,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267286660] [2022-01-09 23:32:43,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:43,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:32:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:43,547 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:32:43,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:32:43,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267286660] [2022-01-09 23:32:43,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267286660] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:32:43,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:32:43,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:32:43,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203524714] [2022-01-09 23:32:43,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:32:43,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:32:43,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:32:43,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:32:43,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:32:43,550 INFO L87 Difference]: Start difference. First operand 13316 states and 17081 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:44,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:32:44,292 INFO L93 Difference]: Finished difference Result 31753 states and 40754 transitions. [2022-01-09 23:32:44,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:32:44,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2022-01-09 23:32:44,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:32:44,325 INFO L225 Difference]: With dead ends: 31753 [2022-01-09 23:32:44,325 INFO L226 Difference]: Without dead ends: 18439 [2022-01-09 23:32:44,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:32:44,343 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 197 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-09 23:32:44,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 175 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-09 23:32:44,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18439 states. [2022-01-09 23:32:44,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18439 to 18421. [2022-01-09 23:32:44,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18421 states, 18420 states have (on average 1.2747557003257328) internal successors, (23481), 18420 states have internal predecessors, (23481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:44,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18421 states to 18421 states and 23481 transitions. [2022-01-09 23:32:44,720 INFO L78 Accepts]: Start accepts. Automaton has 18421 states and 23481 transitions. Word has length 195 [2022-01-09 23:32:44,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:32:44,720 INFO L470 AbstractCegarLoop]: Abstraction has 18421 states and 23481 transitions. [2022-01-09 23:32:44,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:44,721 INFO L276 IsEmpty]: Start isEmpty. Operand 18421 states and 23481 transitions. [2022-01-09 23:32:44,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-01-09 23:32:44,745 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:32:44,745 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2022-01-09 23:32:44,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-09 23:32:44,746 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:32:44,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:32:44,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1929730318, now seen corresponding path program 1 times [2022-01-09 23:32:44,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:32:44,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608678795] [2022-01-09 23:32:44,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:44,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:32:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:44,865 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:32:44,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:32:44,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608678795] [2022-01-09 23:32:44,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608678795] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:32:44,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531053268] [2022-01-09 23:32:44,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:44,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:32:44,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:32:44,870 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:32:44,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-09 23:32:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:45,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-09 23:32:45,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:32:45,404 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-09 23:32:45,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:32:45,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531053268] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:32:45,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-09 23:32:45,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-09 23:32:45,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835743535] [2022-01-09 23:32:45,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:32:45,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:32:45,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:32:45,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:32:45,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:32:45,406 INFO L87 Difference]: Start difference. First operand 18421 states and 23481 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:46,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:32:46,207 INFO L93 Difference]: Finished difference Result 51058 states and 65284 transitions. [2022-01-09 23:32:46,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:32:46,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2022-01-09 23:32:46,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:32:46,272 INFO L225 Difference]: With dead ends: 51058 [2022-01-09 23:32:46,272 INFO L226 Difference]: Without dead ends: 33045 [2022-01-09 23:32:46,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:32:46,302 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 102 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-09 23:32:46,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 416 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-09 23:32:46,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33045 states. [2022-01-09 23:32:46,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33045 to 33044. [2022-01-09 23:32:46,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33044 states, 33043 states have (on average 1.2287019943709712) internal successors, (40600), 33043 states have internal predecessors, (40600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:46,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33044 states to 33044 states and 40600 transitions. [2022-01-09 23:32:46,901 INFO L78 Accepts]: Start accepts. Automaton has 33044 states and 40600 transitions. Word has length 202 [2022-01-09 23:32:46,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:32:46,902 INFO L470 AbstractCegarLoop]: Abstraction has 33044 states and 40600 transitions. [2022-01-09 23:32:46,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:46,902 INFO L276 IsEmpty]: Start isEmpty. Operand 33044 states and 40600 transitions. [2022-01-09 23:32:46,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-01-09 23:32:46,947 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:32:46,947 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:32:46,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-09 23:32:47,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-09 23:32:47,172 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:32:47,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:32:47,172 INFO L85 PathProgramCache]: Analyzing trace with hash -230316698, now seen corresponding path program 1 times [2022-01-09 23:32:47,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:32:47,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404211812] [2022-01-09 23:32:47,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:47,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:32:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:47,268 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-01-09 23:32:47,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:32:47,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404211812] [2022-01-09 23:32:47,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404211812] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:32:47,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:32:47,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:32:47,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962080586] [2022-01-09 23:32:47,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:32:47,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:32:47,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:32:47,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:32:47,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:32:47,270 INFO L87 Difference]: Start difference. First operand 33044 states and 40600 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:48,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:32:48,254 INFO L93 Difference]: Finished difference Result 72636 states and 89707 transitions. [2022-01-09 23:32:48,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:32:48,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2022-01-09 23:32:48,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:32:48,316 INFO L225 Difference]: With dead ends: 72636 [2022-01-09 23:32:48,317 INFO L226 Difference]: Without dead ends: 40609 [2022-01-09 23:32:48,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:32:48,336 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 211 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-09 23:32:48,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 202 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-09 23:32:48,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40609 states. [2022-01-09 23:32:48,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40609 to 40374. [2022-01-09 23:32:48,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40374 states, 40373 states have (on average 1.237336834022738) internal successors, (49955), 40373 states have internal predecessors, (49955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:48,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40374 states to 40374 states and 49955 transitions. [2022-01-09 23:32:48,976 INFO L78 Accepts]: Start accepts. Automaton has 40374 states and 49955 transitions. Word has length 227 [2022-01-09 23:32:48,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:32:48,976 INFO L470 AbstractCegarLoop]: Abstraction has 40374 states and 49955 transitions. [2022-01-09 23:32:48,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:48,977 INFO L276 IsEmpty]: Start isEmpty. Operand 40374 states and 49955 transitions. [2022-01-09 23:32:49,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-09 23:32:49,026 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:32:49,027 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-09 23:32:49,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-09 23:32:49,027 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:32:49,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:32:49,028 INFO L85 PathProgramCache]: Analyzing trace with hash -455682225, now seen corresponding path program 1 times [2022-01-09 23:32:49,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:32:49,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141642659] [2022-01-09 23:32:49,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:49,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:32:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:49,158 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 83 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-09 23:32:49,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:32:49,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141642659] [2022-01-09 23:32:49,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141642659] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:32:49,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780032575] [2022-01-09 23:32:49,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:49,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:32:49,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:32:49,161 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:32:49,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-09 23:32:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:49,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-09 23:32:49,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:32:49,636 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-09 23:32:49,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:32:49,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780032575] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:32:49,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-09 23:32:49,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-09 23:32:49,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35662325] [2022-01-09 23:32:49,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:32:49,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:32:49,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:32:49,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:32:49,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:32:49,639 INFO L87 Difference]: Start difference. First operand 40374 states and 49955 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:50,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:32:50,407 INFO L93 Difference]: Finished difference Result 73203 states and 90379 transitions. [2022-01-09 23:32:50,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:32:50,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2022-01-09 23:32:50,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:32:50,451 INFO L225 Difference]: With dead ends: 73203 [2022-01-09 23:32:50,451 INFO L226 Difference]: Without dead ends: 34659 [2022-01-09 23:32:50,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:32:50,485 INFO L933 BasicCegarLoop]: 354 mSDtfsCounter, 248 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-09 23:32:50,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 379 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-09 23:32:50,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34659 states. [2022-01-09 23:32:50,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34659 to 30389. [2022-01-09 23:32:50,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30389 states, 30388 states have (on average 1.183954192444386) internal successors, (35978), 30388 states have internal predecessors, (35978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:50,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30389 states to 30389 states and 35978 transitions. [2022-01-09 23:32:50,989 INFO L78 Accepts]: Start accepts. Automaton has 30389 states and 35978 transitions. Word has length 232 [2022-01-09 23:32:50,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:32:50,989 INFO L470 AbstractCegarLoop]: Abstraction has 30389 states and 35978 transitions. [2022-01-09 23:32:50,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:50,990 INFO L276 IsEmpty]: Start isEmpty. Operand 30389 states and 35978 transitions. [2022-01-09 23:32:51,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-01-09 23:32:51,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:32:51,017 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:32:51,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-09 23:32:51,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:32:51,241 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:32:51,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:32:51,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1160946865, now seen corresponding path program 1 times [2022-01-09 23:32:51,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:32:51,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420639081] [2022-01-09 23:32:51,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:51,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:32:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:51,314 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-01-09 23:32:51,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:32:51,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420639081] [2022-01-09 23:32:51,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420639081] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:32:51,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:32:51,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:32:51,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854002884] [2022-01-09 23:32:51,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:32:51,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:32:51,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:32:51,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:32:51,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:32:51,316 INFO L87 Difference]: Start difference. First operand 30389 states and 35978 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:52,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:32:52,100 INFO L93 Difference]: Finished difference Result 66276 states and 78314 transitions. [2022-01-09 23:32:52,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:32:52,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 242 [2022-01-09 23:32:52,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:32:52,137 INFO L225 Difference]: With dead ends: 66276 [2022-01-09 23:32:52,137 INFO L226 Difference]: Without dead ends: 37312 [2022-01-09 23:32:52,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:32:52,159 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 204 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-09 23:32:52,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 198 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-09 23:32:52,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37312 states. [2022-01-09 23:32:52,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37312 to 37291. [2022-01-09 23:32:52,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37291 states, 37290 states have (on average 1.1689997318315903) internal successors, (43592), 37290 states have internal predecessors, (43592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:52,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37291 states to 37291 states and 43592 transitions. [2022-01-09 23:32:52,638 INFO L78 Accepts]: Start accepts. Automaton has 37291 states and 43592 transitions. Word has length 242 [2022-01-09 23:32:52,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:32:52,638 INFO L470 AbstractCegarLoop]: Abstraction has 37291 states and 43592 transitions. [2022-01-09 23:32:52,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:52,638 INFO L276 IsEmpty]: Start isEmpty. Operand 37291 states and 43592 transitions. [2022-01-09 23:32:52,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-01-09 23:32:52,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:32:52,672 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-09 23:32:52,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-09 23:32:52,673 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:32:52,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:32:52,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1819314813, now seen corresponding path program 1 times [2022-01-09 23:32:52,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:32:52,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547427306] [2022-01-09 23:32:52,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:52,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:32:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:52,761 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-09 23:32:52,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:32:52,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547427306] [2022-01-09 23:32:52,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547427306] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:32:52,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:32:52,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 23:32:52,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871844079] [2022-01-09 23:32:52,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:32:52,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:32:52,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:32:52,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:32:52,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:32:52,765 INFO L87 Difference]: Start difference. First operand 37291 states and 43592 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:53,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:32:53,303 INFO L93 Difference]: Finished difference Result 67202 states and 78674 transitions. [2022-01-09 23:32:53,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:32:53,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 245 [2022-01-09 23:32:53,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:32:53,338 INFO L225 Difference]: With dead ends: 67202 [2022-01-09 23:32:53,338 INFO L226 Difference]: Without dead ends: 32757 [2022-01-09 23:32:53,356 INFO L932 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 [2022-01-09 23:32:53,357 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 329 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-09 23:32:53,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 31 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-09 23:32:53,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32757 states. [2022-01-09 23:32:53,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32757 to 32757. [2022-01-09 23:32:53,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32757 states, 32756 states have (on average 1.146202222493589) internal successors, (37545), 32756 states have internal predecessors, (37545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:53,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32757 states to 32757 states and 37545 transitions. [2022-01-09 23:32:53,750 INFO L78 Accepts]: Start accepts. Automaton has 32757 states and 37545 transitions. Word has length 245 [2022-01-09 23:32:53,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:32:53,750 INFO L470 AbstractCegarLoop]: Abstraction has 32757 states and 37545 transitions. [2022-01-09 23:32:53,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:53,750 INFO L276 IsEmpty]: Start isEmpty. Operand 32757 states and 37545 transitions. [2022-01-09 23:32:53,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-01-09 23:32:53,775 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:32:53,776 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1] [2022-01-09 23:32:53,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-09 23:32:53,776 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:32:53,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:32:53,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1329708496, now seen corresponding path program 1 times [2022-01-09 23:32:53,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:32:53,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94806579] [2022-01-09 23:32:53,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:53,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:32:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:53,879 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 176 proven. 6 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-01-09 23:32:53,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:32:53,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94806579] [2022-01-09 23:32:53,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94806579] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:32:53,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341171756] [2022-01-09 23:32:53,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:53,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:32:53,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:32:53,882 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:32:53,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-09 23:32:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:54,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-09 23:32:54,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:32:54,458 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-01-09 23:32:54,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:32:54,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341171756] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:32:54,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-09 23:32:54,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-09 23:32:54,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269053676] [2022-01-09 23:32:54,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:32:54,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:32:54,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:32:54,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:32:54,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:32:54,460 INFO L87 Difference]: Start difference. First operand 32757 states and 37545 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:55,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:32:55,257 INFO L93 Difference]: Finished difference Result 70385 states and 81308 transitions. [2022-01-09 23:32:55,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:32:55,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 307 [2022-01-09 23:32:55,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:32:55,304 INFO L225 Difference]: With dead ends: 70385 [2022-01-09 23:32:55,304 INFO L226 Difference]: Without dead ends: 39053 [2022-01-09 23:32:55,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:32:55,327 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 188 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-09 23:32:55,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 135 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-09 23:32:55,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39053 states. [2022-01-09 23:32:55,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39053 to 37020. [2022-01-09 23:32:55,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37020 states, 37019 states have (on average 1.1218563440395473) internal successors, (41530), 37019 states have internal predecessors, (41530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:55,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37020 states to 37020 states and 41530 transitions. [2022-01-09 23:32:55,829 INFO L78 Accepts]: Start accepts. Automaton has 37020 states and 41530 transitions. Word has length 307 [2022-01-09 23:32:55,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:32:55,829 INFO L470 AbstractCegarLoop]: Abstraction has 37020 states and 41530 transitions. [2022-01-09 23:32:55,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:55,829 INFO L276 IsEmpty]: Start isEmpty. Operand 37020 states and 41530 transitions. [2022-01-09 23:32:55,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-01-09 23:32:55,853 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:32:55,854 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-09 23:32:55,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-09 23:32:56,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:32:56,055 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:32:56,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:32:56,055 INFO L85 PathProgramCache]: Analyzing trace with hash -212717815, now seen corresponding path program 1 times [2022-01-09 23:32:56,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:32:56,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577110492] [2022-01-09 23:32:56,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:56,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:32:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:56,173 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-09 23:32:56,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:32:56,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577110492] [2022-01-09 23:32:56,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577110492] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:32:56,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:32:56,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:32:56,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082240522] [2022-01-09 23:32:56,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:32:56,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:32:56,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:32:56,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:32:56,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:32:56,175 INFO L87 Difference]: Start difference. First operand 37020 states and 41530 transitions. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:57,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:32:57,044 INFO L93 Difference]: Finished difference Result 78311 states and 87759 transitions. [2022-01-09 23:32:57,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:32:57,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 317 [2022-01-09 23:32:57,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:32:57,086 INFO L225 Difference]: With dead ends: 78311 [2022-01-09 23:32:57,086 INFO L226 Difference]: Without dead ends: 42919 [2022-01-09 23:32:57,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:32:57,107 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 96 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-09 23:32:57,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 159 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-09 23:32:57,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42919 states. [2022-01-09 23:32:57,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42919 to 42916. [2022-01-09 23:32:57,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42916 states, 42915 states have (on average 1.1160433414889899) internal successors, (47895), 42915 states have internal predecessors, (47895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:57,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42916 states to 42916 states and 47895 transitions. [2022-01-09 23:32:57,579 INFO L78 Accepts]: Start accepts. Automaton has 42916 states and 47895 transitions. Word has length 317 [2022-01-09 23:32:57,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:32:57,579 INFO L470 AbstractCegarLoop]: Abstraction has 42916 states and 47895 transitions. [2022-01-09 23:32:57,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:57,580 INFO L276 IsEmpty]: Start isEmpty. Operand 42916 states and 47895 transitions. [2022-01-09 23:32:57,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-01-09 23:32:57,606 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:32:57,606 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-09 23:32:57,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-09 23:32:57,606 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:32:57,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:32:57,607 INFO L85 PathProgramCache]: Analyzing trace with hash -327886786, now seen corresponding path program 2 times [2022-01-09 23:32:57,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:32:57,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489373232] [2022-01-09 23:32:57,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:57,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:32:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:57,742 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-09 23:32:57,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:32:57,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489373232] [2022-01-09 23:32:57,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489373232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:32:57,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:32:57,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:32:57,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396625153] [2022-01-09 23:32:57,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:32:57,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:32:57,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:32:57,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:32:57,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:32:57,744 INFO L87 Difference]: Start difference. First operand 42916 states and 47895 transitions. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 2 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:58,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:32:58,225 INFO L93 Difference]: Finished difference Result 122241 states and 136615 transitions. [2022-01-09 23:32:58,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:32:58,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 2 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 324 [2022-01-09 23:32:58,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:32:58,321 INFO L225 Difference]: With dead ends: 122241 [2022-01-09 23:32:58,321 INFO L226 Difference]: Without dead ends: 81968 [2022-01-09 23:32:58,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:32:58,362 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 220 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:32:58,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 741 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:32:58,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81968 states. [2022-01-09 23:32:59,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81968 to 81966. [2022-01-09 23:32:59,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81966 states, 81965 states have (on average 1.117306167266516) internal successors, (91580), 81965 states have internal predecessors, (91580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:59,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81966 states to 81966 states and 91580 transitions. [2022-01-09 23:32:59,491 INFO L78 Accepts]: Start accepts. Automaton has 81966 states and 91580 transitions. Word has length 324 [2022-01-09 23:32:59,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:32:59,491 INFO L470 AbstractCegarLoop]: Abstraction has 81966 states and 91580 transitions. [2022-01-09 23:32:59,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 2 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:59,491 INFO L276 IsEmpty]: Start isEmpty. Operand 81966 states and 91580 transitions. [2022-01-09 23:32:59,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2022-01-09 23:32:59,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:32:59,549 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 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] [2022-01-09 23:32:59,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-09 23:32:59,550 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:32:59,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:32:59,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1301670557, now seen corresponding path program 1 times [2022-01-09 23:32:59,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:32:59,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046631884] [2022-01-09 23:32:59,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:59,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:32:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 212 proven. 6 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-01-09 23:32:59,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:32:59,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046631884] [2022-01-09 23:32:59,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046631884] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:32:59,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390184344] [2022-01-09 23:32:59,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:59,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:32:59,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:32:59,971 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:32:59,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-09 23:33:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:33:00,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-09 23:33:00,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:33:00,603 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 409 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-01-09 23:33:00,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:33:00,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390184344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:33:00,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-09 23:33:00,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-09 23:33:00,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762939523] [2022-01-09 23:33:00,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:33:00,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:33:00,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:33:00,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:33:00,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:33:00,605 INFO L87 Difference]: Start difference. First operand 81966 states and 91580 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:33:01,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:33:01,508 INFO L93 Difference]: Finished difference Result 151744 states and 169816 transitions. [2022-01-09 23:33:01,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:33:01,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 337 [2022-01-09 23:33:01,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:33:01,590 INFO L225 Difference]: With dead ends: 151744 [2022-01-09 23:33:01,590 INFO L226 Difference]: Without dead ends: 72421 [2022-01-09 23:33:01,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:33:01,638 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 216 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-09 23:33:01,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 85 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-09 23:33:01,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72421 states. [2022-01-09 23:33:02,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72421 to 59219. [2022-01-09 23:33:02,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59219 states, 59218 states have (on average 1.1082441149650444) internal successors, (65628), 59218 states have internal predecessors, (65628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:33:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59219 states to 59219 states and 65628 transitions. [2022-01-09 23:33:02,552 INFO L78 Accepts]: Start accepts. Automaton has 59219 states and 65628 transitions. Word has length 337 [2022-01-09 23:33:02,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:33:02,552 INFO L470 AbstractCegarLoop]: Abstraction has 59219 states and 65628 transitions. [2022-01-09 23:33:02,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:33:02,553 INFO L276 IsEmpty]: Start isEmpty. Operand 59219 states and 65628 transitions. [2022-01-09 23:33:02,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-01-09 23:33:02,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:33:02,591 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-09 23:33:02,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-09 23:33:02,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-09 23:33:02,792 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:33:02,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:33:02,792 INFO L85 PathProgramCache]: Analyzing trace with hash 2054627007, now seen corresponding path program 1 times [2022-01-09 23:33:02,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:33:02,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746213262] [2022-01-09 23:33:02,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:33:02,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:33:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:33:03,079 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 301 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-01-09 23:33:03,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:33:03,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746213262] [2022-01-09 23:33:03,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746213262] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:33:03,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:33:03,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 23:33:03,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096727924] [2022-01-09 23:33:03,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:33:03,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:33:03,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:33:03,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:33:03,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:33:03,090 INFO L87 Difference]: Start difference. First operand 59219 states and 65628 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:33:03,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:33:03,795 INFO L93 Difference]: Finished difference Result 104193 states and 114760 transitions. [2022-01-09 23:33:03,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:33:03,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 355 [2022-01-09 23:33:03,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:33:03,844 INFO L225 Difference]: With dead ends: 104193 [2022-01-09 23:33:03,844 INFO L226 Difference]: Without dead ends: 46805 [2022-01-09 23:33:03,878 INFO L932 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 [2022-01-09 23:33:03,878 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 218 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-09 23:33:03,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 329 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-09 23:33:03,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46805 states. [2022-01-09 23:33:04,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46805 to 46798. [2022-01-09 23:33:04,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46798 states, 46797 states have (on average 1.0886595294570165) internal successors, (50946), 46797 states have internal predecessors, (50946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:33:04,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46798 states to 46798 states and 50946 transitions. [2022-01-09 23:33:04,656 INFO L78 Accepts]: Start accepts. Automaton has 46798 states and 50946 transitions. Word has length 355 [2022-01-09 23:33:04,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:33:04,656 INFO L470 AbstractCegarLoop]: Abstraction has 46798 states and 50946 transitions. [2022-01-09 23:33:04,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:33:04,657 INFO L276 IsEmpty]: Start isEmpty. Operand 46798 states and 50946 transitions. [2022-01-09 23:33:04,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2022-01-09 23:33:04,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:33:04,688 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-09 23:33:04,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-09 23:33:04,688 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:33:04,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:33:04,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1147289109, now seen corresponding path program 1 times [2022-01-09 23:33:04,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:33:04,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048728330] [2022-01-09 23:33:04,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:33:04,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:33:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:33:04,806 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 130 proven. 6 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-01-09 23:33:04,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:33:04,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048728330] [2022-01-09 23:33:04,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048728330] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:33:04,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32842675] [2022-01-09 23:33:04,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:33:04,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:33:04,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:33:04,808 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:33:04,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-09 23:33:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:33:04,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-09 23:33:04,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:33:05,412 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-09 23:33:05,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:33:05,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32842675] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:33:05,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-09 23:33:05,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-09 23:33:05,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202394400] [2022-01-09 23:33:05,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:33:05,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:33:05,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:33:05,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:33:05,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:33:05,414 INFO L87 Difference]: Start difference. First operand 46798 states and 50946 transitions. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:33:06,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:33:06,121 INFO L93 Difference]: Finished difference Result 93800 states and 102033 transitions. [2022-01-09 23:33:06,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:33:06,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 368 [2022-01-09 23:33:06,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:33:06,168 INFO L225 Difference]: With dead ends: 93800 [2022-01-09 23:33:06,168 INFO L226 Difference]: Without dead ends: 48833 [2022-01-09 23:33:06,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:33:06,194 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 135 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-09 23:33:06,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 47 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-09 23:33:06,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48833 states. [2022-01-09 23:33:06,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48833 to 46798. [2022-01-09 23:33:06,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46798 states, 46797 states have (on average 1.0881466760689789) internal successors, (50922), 46797 states have internal predecessors, (50922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:33:06,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46798 states to 46798 states and 50922 transitions. [2022-01-09 23:33:06,741 INFO L78 Accepts]: Start accepts. Automaton has 46798 states and 50922 transitions. Word has length 368 [2022-01-09 23:33:06,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:33:06,742 INFO L470 AbstractCegarLoop]: Abstraction has 46798 states and 50922 transitions. [2022-01-09 23:33:06,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:33:06,742 INFO L276 IsEmpty]: Start isEmpty. Operand 46798 states and 50922 transitions. [2022-01-09 23:33:06,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2022-01-09 23:33:06,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:33:06,959 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-09 23:33:06,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-09 23:33:07,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:33:07,171 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:33:07,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:33:07,171 INFO L85 PathProgramCache]: Analyzing trace with hash -209859665, now seen corresponding path program 1 times [2022-01-09 23:33:07,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:33:07,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000145918] [2022-01-09 23:33:07,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:33:07,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:33:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:33:07,361 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 271 proven. 12 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2022-01-09 23:33:07,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:33:07,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000145918] [2022-01-09 23:33:07,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000145918] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:33:07,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745400588] [2022-01-09 23:33:07,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:33:07,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:33:07,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:33:07,363 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:33:07,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-09 23:33:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:33:07,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-09 23:33:07,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:33:08,160 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-01-09 23:33:08,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:33:08,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745400588] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:33:08,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-09 23:33:08,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-01-09 23:33:08,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566663097] [2022-01-09 23:33:08,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:33:08,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:33:08,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:33:08,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:33:08,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-09 23:33:08,162 INFO L87 Difference]: Start difference. First operand 46798 states and 50922 transitions. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:33:08,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:33:08,741 INFO L93 Difference]: Finished difference Result 120435 states and 130984 transitions. [2022-01-09 23:33:08,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:33:08,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 419 [2022-01-09 23:33:08,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:33:08,822 INFO L225 Difference]: With dead ends: 120435 [2022-01-09 23:33:08,822 INFO L226 Difference]: Without dead ends: 75468 [2022-01-09 23:33:08,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-09 23:33:08,854 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 181 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-09 23:33:08,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 792 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-09 23:33:08,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75468 states. [2022-01-09 23:33:09,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75468 to 75464. [2022-01-09 23:33:09,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75464 states, 75463 states have (on average 1.0785815565243895) internal successors, (81393), 75463 states have internal predecessors, (81393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:33:09,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75464 states to 75464 states and 81393 transitions. [2022-01-09 23:33:09,783 INFO L78 Accepts]: Start accepts. Automaton has 75464 states and 81393 transitions. Word has length 419 [2022-01-09 23:33:09,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:33:09,783 INFO L470 AbstractCegarLoop]: Abstraction has 75464 states and 81393 transitions. [2022-01-09 23:33:09,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:33:09,783 INFO L276 IsEmpty]: Start isEmpty. Operand 75464 states and 81393 transitions. [2022-01-09 23:33:09,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-01-09 23:33:09,850 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:33:09,850 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-09 23:33:09,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-09 23:33:10,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:33:10,052 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:33:10,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:33:10,052 INFO L85 PathProgramCache]: Analyzing trace with hash 610935781, now seen corresponding path program 1 times [2022-01-09 23:33:10,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:33:10,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884453414] [2022-01-09 23:33:10,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:33:10,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:33:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:33:10,421 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 373 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:33:10,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:33:10,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884453414] [2022-01-09 23:33:10,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884453414] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:33:10,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283960290] [2022-01-09 23:33:10,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:33:10,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:33:10,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:33:10,423 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:33:10,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-09 23:33:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:33:10,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-09 23:33:10,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:33:11,599 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-09 23:33:11,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:33:11,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283960290] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:33:11,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-09 23:33:11,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2022-01-09 23:33:11,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988028249] [2022-01-09 23:33:11,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:33:11,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 23:33:11,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:33:11,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 23:33:11,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-09 23:33:11,601 INFO L87 Difference]: Start difference. First operand 75464 states and 81393 transitions. Second operand has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:33:12,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:33:12,873 INFO L93 Difference]: Finished difference Result 153801 states and 166005 transitions. [2022-01-09 23:33:12,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-09 23:33:12,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 421 [2022-01-09 23:33:12,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:33:12,979 INFO L225 Difference]: With dead ends: 153801 [2022-01-09 23:33:12,979 INFO L226 Difference]: Without dead ends: 80168 [2022-01-09 23:33:13,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-09 23:33:13,013 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 319 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-09 23:33:13,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 103 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-09 23:33:13,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80168 states. [2022-01-09 23:33:13,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80168 to 73028. [2022-01-09 23:33:13,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73028 states, 73027 states have (on average 1.075944513673025) internal successors, (78573), 73027 states have internal predecessors, (78573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:33:14,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73028 states to 73028 states and 78573 transitions. [2022-01-09 23:33:14,012 INFO L78 Accepts]: Start accepts. Automaton has 73028 states and 78573 transitions. Word has length 421 [2022-01-09 23:33:14,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:33:14,013 INFO L470 AbstractCegarLoop]: Abstraction has 73028 states and 78573 transitions. [2022-01-09 23:33:14,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:33:14,013 INFO L276 IsEmpty]: Start isEmpty. Operand 73028 states and 78573 transitions. [2022-01-09 23:33:14,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2022-01-09 23:33:14,076 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:33:14,077 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-01-09 23:33:14,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-01-09 23:33:14,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-01-09 23:33:14,277 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:33:14,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:33:14,278 INFO L85 PathProgramCache]: Analyzing trace with hash 334542141, now seen corresponding path program 1 times [2022-01-09 23:33:14,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:33:14,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484928902] [2022-01-09 23:33:14,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:33:14,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:33:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:33:14,418 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-01-09 23:33:14,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:33:14,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484928902] [2022-01-09 23:33:14,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484928902] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:33:14,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:33:14,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:33:14,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220943840] [2022-01-09 23:33:14,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:33:14,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:33:14,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:33:14,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:33:14,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:33:14,421 INFO L87 Difference]: Start difference. First operand 73028 states and 78573 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:33:15,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:33:15,548 INFO L93 Difference]: Finished difference Result 183510 states and 197417 transitions. [2022-01-09 23:33:15,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:33:15,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 435 [2022-01-09 23:33:15,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:33:15,682 INFO L225 Difference]: With dead ends: 183510 [2022-01-09 23:33:15,682 INFO L226 Difference]: Without dead ends: 111907 [2022-01-09 23:33:15,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:33:15,728 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 119 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-09 23:33:15,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 143 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-09 23:33:15,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111907 states. [2022-01-09 23:33:17,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111907 to 108452. [2022-01-09 23:33:17,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108452 states, 108451 states have (on average 1.0764123890051729) internal successors, (116738), 108451 states have internal predecessors, (116738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:33:17,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108452 states to 108452 states and 116738 transitions. [2022-01-09 23:33:17,280 INFO L78 Accepts]: Start accepts. Automaton has 108452 states and 116738 transitions. Word has length 435 [2022-01-09 23:33:17,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:33:17,280 INFO L470 AbstractCegarLoop]: Abstraction has 108452 states and 116738 transitions. [2022-01-09 23:33:17,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:33:17,280 INFO L276 IsEmpty]: Start isEmpty. Operand 108452 states and 116738 transitions. [2022-01-09 23:33:17,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2022-01-09 23:33:17,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:33:17,357 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-01-09 23:33:17,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-09 23:33:17,357 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:33:17,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:33:17,358 INFO L85 PathProgramCache]: Analyzing trace with hash -556131150, now seen corresponding path program 1 times [2022-01-09 23:33:17,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:33:17,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329377954] [2022-01-09 23:33:17,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:33:17,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:33:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:33:17,861 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 278 proven. 6 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-01-09 23:33:17,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:33:17,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329377954] [2022-01-09 23:33:17,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329377954] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:33:17,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143713961] [2022-01-09 23:33:17,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:33:17,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:33:17,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:33:17,864 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:33:17,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-09 23:33:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:33:18,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-09 23:33:18,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:33:18,680 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 321 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-01-09 23:33:18,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:33:18,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143713961] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:33:18,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-09 23:33:18,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-01-09 23:33:18,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435022818] [2022-01-09 23:33:18,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:33:18,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:33:18,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:33:18,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:33:18,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:33:18,682 INFO L87 Difference]: Start difference. First operand 108452 states and 116738 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 2 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:33:19,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:33:19,605 INFO L93 Difference]: Finished difference Result 243123 states and 261864 transitions. [2022-01-09 23:33:19,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:33:19,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 2 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 442 [2022-01-09 23:33:19,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:33:19,761 INFO L225 Difference]: With dead ends: 243123 [2022-01-09 23:33:19,761 INFO L226 Difference]: Without dead ends: 136502 [2022-01-09 23:33:19,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:33:19,815 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 192 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-09 23:33:19,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 434 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-09 23:33:19,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136502 states. [2022-01-09 23:33:21,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136502 to 136498. [2022-01-09 23:33:21,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136498 states, 136497 states have (on average 1.0774962087078837) internal successors, (147075), 136497 states have internal predecessors, (147075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:33:21,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136498 states to 136498 states and 147075 transitions. [2022-01-09 23:33:21,886 INFO L78 Accepts]: Start accepts. Automaton has 136498 states and 147075 transitions. Word has length 442 [2022-01-09 23:33:21,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:33:21,886 INFO L470 AbstractCegarLoop]: Abstraction has 136498 states and 147075 transitions. [2022-01-09 23:33:21,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 2 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:33:21,887 INFO L276 IsEmpty]: Start isEmpty. Operand 136498 states and 147075 transitions. [2022-01-09 23:33:22,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2022-01-09 23:33:22,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:33:22,031 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-09 23:33:22,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-09 23:33:22,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:33:22,234 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:33:22,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:33:22,234 INFO L85 PathProgramCache]: Analyzing trace with hash -82537526, now seen corresponding path program 1 times [2022-01-09 23:33:22,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:33:22,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739126655] [2022-01-09 23:33:22,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:33:22,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:33:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:33:22,430 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 498 proven. 18 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-01-09 23:33:22,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:33:22,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739126655] [2022-01-09 23:33:22,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739126655] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:33:22,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560761797] [2022-01-09 23:33:22,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:33:22,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:33:22,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:33:22,432 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:33:22,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-09 23:33:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:33:22,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-09 23:33:22,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:33:23,227 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 395 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-01-09 23:33:23,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:33:23,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560761797] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:33:23,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-09 23:33:23,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-01-09 23:33:23,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683412799] [2022-01-09 23:33:23,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:33:23,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:33:23,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:33:23,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:33:23,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-09 23:33:23,229 INFO L87 Difference]: Start difference. First operand 136498 states and 147075 transitions. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 2 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:33:24,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:33:24,649 INFO L93 Difference]: Finished difference Result 376112 states and 405210 transitions. [2022-01-09 23:33:24,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:33:24,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 2 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 472 [2022-01-09 23:33:24,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:33:24,976 INFO L225 Difference]: With dead ends: 376112 [2022-01-09 23:33:24,976 INFO L226 Difference]: Without dead ends: 241445 [2022-01-09 23:33:25,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-09 23:33:25,071 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 198 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-09 23:33:25,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 529 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-09 23:33:25,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241445 states.