/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/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 02:20:34,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 02:20:34,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 02:20:34,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 02:20:34,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 02:20:34,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 02:20:34,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 02:20:34,162 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 [2022-01-10 02:20:34,194 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 02:20:34,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 02:20:34,195 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 02:20:34,195 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 02:20:34,195 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 02:20:34,196 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 02:20:34,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 02:20:34,196 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 02:20:34,196 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 02:20:34,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 02:20:34,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 02:20:34,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 02:20:34,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 02:20:34,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 02:20:34,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 02:20:34,198 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 02:20:34,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 02:20:34,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 02:20:34,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 02:20:34,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 02:20:34,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 02:20:34,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:20:34,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 02:20:34,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 02:20:34,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 02:20:34,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 02:20:34,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 02:20:34,200 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 02:20:34,200 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 02:20:34,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 02:20:34,200 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 02:20:34,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 02:20:34,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 02:20:34,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 02:20:34,460 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 02:20:34,460 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 02:20:34,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2022-01-10 02:20:34,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cc265766/2be03d2a70e34b039fe3d6ff99648244/FLAG6bcb44d30 [2022-01-10 02:20:35,199 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 02:20:35,200 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2022-01-10 02:20:35,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cc265766/2be03d2a70e34b039fe3d6ff99648244/FLAG6bcb44d30 [2022-01-10 02:20:35,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cc265766/2be03d2a70e34b039fe3d6ff99648244 [2022-01-10 02:20:35,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 02:20:35,549 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 02:20:35,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 02:20:35,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 02:20:35,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 02:20:35,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:20:35" (1/1) ... [2022-01-10 02:20:35,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@161f8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:20:35, skipping insertion in model container [2022-01-10 02:20:35,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:20:35" (1/1) ... [2022-01-10 02:20:35,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 02:20:35,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 02:20:36,031 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label01.c[11705,11718] [2022-01-10 02:20:36,074 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label01.c[17260,17273] [2022-01-10 02:20:36,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:20:36,759 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 02:20:36,801 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label01.c[11705,11718] [2022-01-10 02:20:36,817 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label01.c[17260,17273] [2022-01-10 02:20:37,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:20:37,235 INFO L208 MainTranslator]: Completed translation [2022-01-10 02:20:37,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:20:37 WrapperNode [2022-01-10 02:20:37,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 02:20:37,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 02:20:37,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 02:20:37,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 02:20:37,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:20:37" (1/1) ... [2022-01-10 02:20:37,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:20:37" (1/1) ... [2022-01-10 02:20:37,574 INFO L137 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5089 [2022-01-10 02:20:37,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 02:20:37,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 02:20:37,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 02:20:37,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 02:20:37,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:20:37" (1/1) ... [2022-01-10 02:20:37,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:20:37" (1/1) ... [2022-01-10 02:20:37,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:20:37" (1/1) ... [2022-01-10 02:20:37,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:20:37" (1/1) ... [2022-01-10 02:20:37,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:20:37" (1/1) ... [2022-01-10 02:20:37,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:20:37" (1/1) ... [2022-01-10 02:20:37,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:20:37" (1/1) ... [2022-01-10 02:20:37,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 02:20:37,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 02:20:37,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 02:20:37,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 02:20:37,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:20:37" (1/1) ... [2022-01-10 02:20:37,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:20:37,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:20:37,996 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) [2022-01-10 02:20:38,012 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 [2022-01-10 02:20:38,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 02:20:38,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 02:20:38,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 02:20:38,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 02:20:38,173 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 02:20:38,174 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 02:20:41,567 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 02:20:41,580 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 02:20:41,581 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 02:20:41,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:20:41 BoogieIcfgContainer [2022-01-10 02:20:41,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 02:20:41,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 02:20:41,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 02:20:41,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 02:20:41,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:20:35" (1/3) ... [2022-01-10 02:20:41,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7587e63a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:20:41, skipping insertion in model container [2022-01-10 02:20:41,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:20:37" (2/3) ... [2022-01-10 02:20:41,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7587e63a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:20:41, skipping insertion in model container [2022-01-10 02:20:41,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:20:41" (3/3) ... [2022-01-10 02:20:41,589 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2022-01-10 02:20:41,593 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 02:20:41,593 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 02:20:41,633 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 02:20:41,638 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 [2022-01-10 02:20:41,638 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 02:20:41,662 INFO L276 IsEmpty]: Start isEmpty. Operand has 911 states, 908 states have (on average 1.8997797356828194) internal successors, (1725), 910 states have internal predecessors, (1725), 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) [2022-01-10 02:20:41,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 02:20:41,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:20:41,669 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] [2022-01-10 02:20:41,670 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:20:41,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:20:41,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1083425478, now seen corresponding path program 1 times [2022-01-10 02:20:41,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:20:41,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131651473] [2022-01-10 02:20:41,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:20:41,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:20:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:20:41,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:20:41,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:20:41,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131651473] [2022-01-10 02:20:41,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131651473] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:20:41,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:20:41,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 02:20:41,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815337072] [2022-01-10 02:20:41,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:20:41,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 02:20:41,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:20:41,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 02:20:41,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 02:20:41,873 INFO L87 Difference]: Start difference. First operand has 911 states, 908 states have (on average 1.8997797356828194) internal successors, (1725), 910 states have internal predecessors, (1725), 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 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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) [2022-01-10 02:20:41,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:20:41,953 INFO L93 Difference]: Finished difference Result 1783 states and 3378 transitions. [2022-01-10 02:20:41,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 02:20:41,955 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 34 [2022-01-10 02:20:41,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:20:41,974 INFO L225 Difference]: With dead ends: 1783 [2022-01-10 02:20:41,974 INFO L226 Difference]: Without dead ends: 845 [2022-01-10 02:20:41,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 02:20:41,987 INFO L933 BasicCegarLoop]: 1656 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:20:41,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:20:42,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-01-10 02:20:42,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2022-01-10 02:20:42,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.8884934756820877) internal successors, (1592), 844 states have internal predecessors, (1592), 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) [2022-01-10 02:20:42,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1592 transitions. [2022-01-10 02:20:42,069 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1592 transitions. Word has length 34 [2022-01-10 02:20:42,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:20:42,069 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1592 transitions. [2022-01-10 02:20:42,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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) [2022-01-10 02:20:42,070 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1592 transitions. [2022-01-10 02:20:42,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 02:20:42,071 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:20:42,071 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] [2022-01-10 02:20:42,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 02:20:42,071 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:20:42,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:20:42,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1592898568, now seen corresponding path program 1 times [2022-01-10 02:20:42,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:20:42,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295267627] [2022-01-10 02:20:42,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:20:42,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:20:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:20:42,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:20:42,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:20:42,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295267627] [2022-01-10 02:20:42,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295267627] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:20:42,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:20:42,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:20:42,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451367340] [2022-01-10 02:20:42,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:20:42,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:20:42,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:20:42,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:20:42,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:20:42,204 INFO L87 Difference]: Start difference. First operand 845 states and 1592 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2022-01-10 02:20:42,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:20:42,298 INFO L93 Difference]: Finished difference Result 903 states and 1681 transitions. [2022-01-10 02:20:42,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:20:42,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 34 [2022-01-10 02:20:42,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:20:42,302 INFO L225 Difference]: With dead ends: 903 [2022-01-10 02:20:42,302 INFO L226 Difference]: Without dead ends: 845 [2022-01-10 02:20:42,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:20:42,303 INFO L933 BasicCegarLoop]: 1590 mSDtfsCounter, 3 mSDsluCounter, 4736 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6326 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:20:42,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6326 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:20:42,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-01-10 02:20:42,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2022-01-10 02:20:42,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.8517200474495847) internal successors, (1561), 844 states have internal predecessors, (1561), 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) [2022-01-10 02:20:42,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1561 transitions. [2022-01-10 02:20:42,319 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1561 transitions. Word has length 34 [2022-01-10 02:20:42,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:20:42,319 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1561 transitions. [2022-01-10 02:20:42,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2022-01-10 02:20:42,319 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1561 transitions. [2022-01-10 02:20:42,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 02:20:42,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:20:42,326 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] [2022-01-10 02:20:42,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 02:20:42,326 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:20:42,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:20:42,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1279579051, now seen corresponding path program 1 times [2022-01-10 02:20:42,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:20:42,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684723866] [2022-01-10 02:20:42,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:20:42,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:20:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:20:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:20:42,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:20:42,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684723866] [2022-01-10 02:20:42,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684723866] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:20:42,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:20:42,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:20:42,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172232055] [2022-01-10 02:20:42,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:20:42,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:20:42,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:20:42,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:20:42,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:20:42,478 INFO L87 Difference]: Start difference. First operand 845 states and 1561 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2022-01-10 02:20:48,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:20:48,185 INFO L93 Difference]: Finished difference Result 3100 states and 5870 transitions. [2022-01-10 02:20:48,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 02:20:48,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2022-01-10 02:20:48,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:20:48,197 INFO L225 Difference]: With dead ends: 3100 [2022-01-10 02:20:48,197 INFO L226 Difference]: Without dead ends: 2347 [2022-01-10 02:20:48,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:20:48,199 INFO L933 BasicCegarLoop]: 797 mSDtfsCounter, 2453 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2453 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1161 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:20:48,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2453 Valid, 815 Invalid, 6515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1161 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-01-10 02:20:48,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2022-01-10 02:20:48,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2347. [2022-01-10 02:20:48,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2347 states, 2345 states have (on average 1.5671641791044777) internal successors, (3675), 2346 states have internal predecessors, (3675), 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) [2022-01-10 02:20:48,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 3675 transitions. [2022-01-10 02:20:48,245 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 3675 transitions. Word has length 48 [2022-01-10 02:20:48,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:20:48,245 INFO L470 AbstractCegarLoop]: Abstraction has 2347 states and 3675 transitions. [2022-01-10 02:20:48,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2022-01-10 02:20:48,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 3675 transitions. [2022-01-10 02:20:48,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 02:20:48,247 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:20:48,247 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] [2022-01-10 02:20:48,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 02:20:48,247 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:20:48,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:20:48,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1337087153, now seen corresponding path program 1 times [2022-01-10 02:20:48,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:20:48,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988370632] [2022-01-10 02:20:48,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:20:48,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:20:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:20:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:20:48,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:20:48,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988370632] [2022-01-10 02:20:48,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988370632] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:20:48,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:20:48,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:20:48,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971738823] [2022-01-10 02:20:48,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:20:48,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:20:48,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:20:48,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:20:48,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:20:48,327 INFO L87 Difference]: Start difference. First operand 2347 states and 3675 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2022-01-10 02:20:48,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:20:48,365 INFO L93 Difference]: Finished difference Result 2449 states and 3835 transitions. [2022-01-10 02:20:48,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:20:48,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-01-10 02:20:48,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:20:48,375 INFO L225 Difference]: With dead ends: 2449 [2022-01-10 02:20:48,375 INFO L226 Difference]: Without dead ends: 2395 [2022-01-10 02:20:48,375 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 [2022-01-10 02:20:48,382 INFO L933 BasicCegarLoop]: 1577 mSDtfsCounter, 1498 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:20:48,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1498 Valid, 1676 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:20:48,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2022-01-10 02:20:48,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2393. [2022-01-10 02:20:48,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2393 states, 2391 states have (on average 1.5675449602676705) internal successors, (3748), 2392 states have internal predecessors, (3748), 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) [2022-01-10 02:20:48,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2393 states to 2393 states and 3748 transitions. [2022-01-10 02:20:48,427 INFO L78 Accepts]: Start accepts. Automaton has 2393 states and 3748 transitions. Word has length 64 [2022-01-10 02:20:48,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:20:48,429 INFO L470 AbstractCegarLoop]: Abstraction has 2393 states and 3748 transitions. [2022-01-10 02:20:48,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2022-01-10 02:20:48,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2393 states and 3748 transitions. [2022-01-10 02:20:48,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 02:20:48,430 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:20:48,430 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] [2022-01-10 02:20:48,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 02:20:48,431 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:20:48,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:20:48,438 INFO L85 PathProgramCache]: Analyzing trace with hash -119101755, now seen corresponding path program 1 times [2022-01-10 02:20:48,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:20:48,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892894868] [2022-01-10 02:20:48,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:20:48,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:20:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:20:48,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:20:48,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:20:48,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892894868] [2022-01-10 02:20:48,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892894868] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:20:48,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:20:48,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:20:48,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101719941] [2022-01-10 02:20:48,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:20:48,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:20:48,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:20:48,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:20:48,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:20:48,551 INFO L87 Difference]: Start difference. First operand 2393 states and 3748 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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) [2022-01-10 02:20:48,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:20:48,774 INFO L93 Difference]: Finished difference Result 3393 states and 5328 transitions. [2022-01-10 02:20:48,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 02:20:48,775 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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 64 [2022-01-10 02:20:48,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:20:48,786 INFO L225 Difference]: With dead ends: 3393 [2022-01-10 02:20:48,786 INFO L226 Difference]: Without dead ends: 3293 [2022-01-10 02:20:48,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-01-10 02:20:48,789 INFO L933 BasicCegarLoop]: 1555 mSDtfsCounter, 8419 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8419 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:20:48,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8419 Valid, 2463 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:20:48,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2022-01-10 02:20:48,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 2491. [2022-01-10 02:20:48,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2491 states, 2489 states have (on average 1.5672961028525512) internal successors, (3901), 2490 states have internal predecessors, (3901), 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) [2022-01-10 02:20:48,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2491 states to 2491 states and 3901 transitions. [2022-01-10 02:20:48,853 INFO L78 Accepts]: Start accepts. Automaton has 2491 states and 3901 transitions. Word has length 64 [2022-01-10 02:20:48,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:20:48,855 INFO L470 AbstractCegarLoop]: Abstraction has 2491 states and 3901 transitions. [2022-01-10 02:20:48,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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) [2022-01-10 02:20:48,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2491 states and 3901 transitions. [2022-01-10 02:20:48,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 02:20:48,856 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:20:48,857 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] [2022-01-10 02:20:48,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 02:20:48,857 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:20:48,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:20:48,858 INFO L85 PathProgramCache]: Analyzing trace with hash 91634997, now seen corresponding path program 1 times [2022-01-10 02:20:48,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:20:48,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087119596] [2022-01-10 02:20:48,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:20:48,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:20:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:20:48,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:20:48,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:20:48,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087119596] [2022-01-10 02:20:48,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087119596] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:20:48,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:20:48,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:20:48,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156099616] [2022-01-10 02:20:48,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:20:48,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:20:48,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:20:48,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:20:48,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:20:48,931 INFO L87 Difference]: Start difference. First operand 2491 states and 3901 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2022-01-10 02:20:48,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:20:48,993 INFO L93 Difference]: Finished difference Result 2865 states and 4485 transitions. [2022-01-10 02:20:48,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:20:48,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2022-01-10 02:20:48,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:20:49,005 INFO L225 Difference]: With dead ends: 2865 [2022-01-10 02:20:49,005 INFO L226 Difference]: Without dead ends: 2667 [2022-01-10 02:20:49,008 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 [2022-01-10 02:20:49,010 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 1489 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:20:49,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1489 Valid, 1635 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:20:49,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2667 states. [2022-01-10 02:20:49,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2667 to 2661. [2022-01-10 02:20:49,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2661 states, 2659 states have (on average 1.564121850319669) internal successors, (4159), 2660 states have internal predecessors, (4159), 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) [2022-01-10 02:20:49,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2661 states to 2661 states and 4159 transitions. [2022-01-10 02:20:49,106 INFO L78 Accepts]: Start accepts. Automaton has 2661 states and 4159 transitions. Word has length 66 [2022-01-10 02:20:49,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:20:49,106 INFO L470 AbstractCegarLoop]: Abstraction has 2661 states and 4159 transitions. [2022-01-10 02:20:49,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2022-01-10 02:20:49,107 INFO L276 IsEmpty]: Start isEmpty. Operand 2661 states and 4159 transitions. [2022-01-10 02:20:49,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 02:20:49,107 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:20:49,108 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] [2022-01-10 02:20:49,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 02:20:49,108 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:20:49,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:20:49,109 INFO L85 PathProgramCache]: Analyzing trace with hash 158128509, now seen corresponding path program 1 times [2022-01-10 02:20:49,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:20:49,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477909771] [2022-01-10 02:20:49,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:20:49,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:20:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:20:49,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:20:49,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:20:49,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477909771] [2022-01-10 02:20:49,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477909771] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:20:49,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:20:49,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:20:49,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28714542] [2022-01-10 02:20:49,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:20:49,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:20:49,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:20:49,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:20:49,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:20:49,286 INFO L87 Difference]: Start difference. First operand 2661 states and 4159 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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) [2022-01-10 02:20:49,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:20:49,527 INFO L93 Difference]: Finished difference Result 3031 states and 4729 transitions. [2022-01-10 02:20:49,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:20:49,527 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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 66 [2022-01-10 02:20:49,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:20:49,538 INFO L225 Difference]: With dead ends: 3031 [2022-01-10 02:20:49,539 INFO L226 Difference]: Without dead ends: 2663 [2022-01-10 02:20:49,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:20:49,542 INFO L933 BasicCegarLoop]: 1568 mSDtfsCounter, 4663 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4663 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:20:49,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4663 Valid, 1899 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:20:49,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2022-01-10 02:20:49,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2661. [2022-01-10 02:20:49,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2661 states, 2659 states have (on average 1.5626175253854833) internal successors, (4155), 2660 states have internal predecessors, (4155), 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) [2022-01-10 02:20:49,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2661 states to 2661 states and 4155 transitions. [2022-01-10 02:20:49,626 INFO L78 Accepts]: Start accepts. Automaton has 2661 states and 4155 transitions. Word has length 66 [2022-01-10 02:20:49,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:20:49,627 INFO L470 AbstractCegarLoop]: Abstraction has 2661 states and 4155 transitions. [2022-01-10 02:20:49,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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) [2022-01-10 02:20:49,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2661 states and 4155 transitions. [2022-01-10 02:20:49,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 02:20:49,628 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:20:49,629 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] [2022-01-10 02:20:49,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 02:20:49,629 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:20:49,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:20:49,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1100417095, now seen corresponding path program 1 times [2022-01-10 02:20:49,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:20:49,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803830012] [2022-01-10 02:20:49,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:20:49,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:20:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:20:49,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:20:49,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:20:49,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803830012] [2022-01-10 02:20:49,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803830012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:20:49,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:20:49,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:20:49,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291136856] [2022-01-10 02:20:49,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:20:49,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:20:49,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:20:49,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:20:49,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:20:49,687 INFO L87 Difference]: Start difference. First operand 2661 states and 4155 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2022-01-10 02:20:49,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:20:49,774 INFO L93 Difference]: Finished difference Result 3349 states and 5205 transitions. [2022-01-10 02:20:49,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:20:49,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2022-01-10 02:20:49,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:20:49,784 INFO L225 Difference]: With dead ends: 3349 [2022-01-10 02:20:49,785 INFO L226 Difference]: Without dead ends: 2981 [2022-01-10 02:20:49,786 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 [2022-01-10 02:20:49,786 INFO L933 BasicCegarLoop]: 1591 mSDtfsCounter, 1502 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:20:49,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1502 Valid, 1686 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:20:49,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2022-01-10 02:20:49,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 2979. [2022-01-10 02:20:49,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2979 states, 2977 states have (on average 1.5555928787369835) internal successors, (4631), 2978 states have internal predecessors, (4631), 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) [2022-01-10 02:20:49,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 4631 transitions. [2022-01-10 02:20:49,903 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 4631 transitions. Word has length 66 [2022-01-10 02:20:49,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:20:49,904 INFO L470 AbstractCegarLoop]: Abstraction has 2979 states and 4631 transitions. [2022-01-10 02:20:49,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2022-01-10 02:20:49,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 4631 transitions. [2022-01-10 02:20:49,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 02:20:49,905 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:20:49,906 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] [2022-01-10 02:20:49,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 02:20:49,908 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:20:49,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:20:49,909 INFO L85 PathProgramCache]: Analyzing trace with hash -826729383, now seen corresponding path program 1 times [2022-01-10 02:20:49,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:20:49,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440029040] [2022-01-10 02:20:49,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:20:49,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:20:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:20:49,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:20:49,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:20:49,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440029040] [2022-01-10 02:20:49,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440029040] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:20:49,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:20:49,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:20:49,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770592628] [2022-01-10 02:20:49,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:20:49,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:20:49,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:20:49,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:20:49,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:20:49,956 INFO L87 Difference]: Start difference. First operand 2979 states and 4631 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2022-01-10 02:20:50,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:20:50,091 INFO L93 Difference]: Finished difference Result 4255 states and 6553 transitions. [2022-01-10 02:20:50,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:20:50,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2022-01-10 02:20:50,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:20:50,104 INFO L225 Difference]: With dead ends: 4255 [2022-01-10 02:20:50,104 INFO L226 Difference]: Without dead ends: 3569 [2022-01-10 02:20:50,106 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 [2022-01-10 02:20:50,108 INFO L933 BasicCegarLoop]: 1604 mSDtfsCounter, 1506 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:20:50,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1506 Valid, 1695 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:20:50,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3569 states. [2022-01-10 02:20:50,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3569 to 3567. [2022-01-10 02:20:50,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3567 states, 3565 states have (on average 1.541374474053296) internal successors, (5495), 3566 states have internal predecessors, (5495), 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) [2022-01-10 02:20:50,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3567 states to 3567 states and 5495 transitions. [2022-01-10 02:20:50,266 INFO L78 Accepts]: Start accepts. Automaton has 3567 states and 5495 transitions. Word has length 66 [2022-01-10 02:20:50,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:20:50,266 INFO L470 AbstractCegarLoop]: Abstraction has 3567 states and 5495 transitions. [2022-01-10 02:20:50,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2022-01-10 02:20:50,267 INFO L276 IsEmpty]: Start isEmpty. Operand 3567 states and 5495 transitions. [2022-01-10 02:20:50,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 02:20:50,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:20:50,272 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] [2022-01-10 02:20:50,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 02:20:50,272 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:20:50,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:20:50,272 INFO L85 PathProgramCache]: Analyzing trace with hash 992342265, now seen corresponding path program 1 times [2022-01-10 02:20:50,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:20:50,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624979203] [2022-01-10 02:20:50,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:20:50,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:20:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:20:50,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:20:50,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:20:50,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624979203] [2022-01-10 02:20:50,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624979203] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:20:50,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:20:50,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:20:50,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868888264] [2022-01-10 02:20:50,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:20:50,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:20:50,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:20:50,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:20:50,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:20:50,314 INFO L87 Difference]: Start difference. First operand 3567 states and 5495 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2022-01-10 02:20:50,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:20:50,537 INFO L93 Difference]: Finished difference Result 5923 states and 8985 transitions. [2022-01-10 02:20:50,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:20:50,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2022-01-10 02:20:50,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:20:50,553 INFO L225 Difference]: With dead ends: 5923 [2022-01-10 02:20:50,553 INFO L226 Difference]: Without dead ends: 4649 [2022-01-10 02:20:50,555 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 [2022-01-10 02:20:50,555 INFO L933 BasicCegarLoop]: 1617 mSDtfsCounter, 1510 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:20:50,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1510 Valid, 1704 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:20:50,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4649 states. [2022-01-10 02:20:50,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4649 to 4647. [2022-01-10 02:20:50,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4647 states, 4645 states have (on average 1.5171151776103338) internal successors, (7047), 4646 states have internal predecessors, (7047), 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) [2022-01-10 02:20:50,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4647 states to 4647 states and 7047 transitions. [2022-01-10 02:20:50,781 INFO L78 Accepts]: Start accepts. Automaton has 4647 states and 7047 transitions. Word has length 66 [2022-01-10 02:20:50,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:20:50,781 INFO L470 AbstractCegarLoop]: Abstraction has 4647 states and 7047 transitions. [2022-01-10 02:20:50,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2022-01-10 02:20:50,782 INFO L276 IsEmpty]: Start isEmpty. Operand 4647 states and 7047 transitions. [2022-01-10 02:20:50,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 02:20:50,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:20:50,783 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] [2022-01-10 02:20:50,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 02:20:50,783 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:20:50,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:20:50,784 INFO L85 PathProgramCache]: Analyzing trace with hash 192293446, now seen corresponding path program 1 times [2022-01-10 02:20:50,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:20:50,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814454975] [2022-01-10 02:20:50,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:20:50,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:20:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:20:50,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:20:50,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:20:50,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814454975] [2022-01-10 02:20:50,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814454975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:20:50,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:20:50,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:20:50,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146448803] [2022-01-10 02:20:50,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:20:50,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:20:50,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:20:50,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:20:50,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:20:50,856 INFO L87 Difference]: Start difference. First operand 4647 states and 7047 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-01-10 02:20:51,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:20:51,220 INFO L93 Difference]: Finished difference Result 6405 states and 9581 transitions. [2022-01-10 02:20:51,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:20:51,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2022-01-10 02:20:51,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:20:51,233 INFO L225 Difference]: With dead ends: 6405 [2022-01-10 02:20:51,234 INFO L226 Difference]: Without dead ends: 6403 [2022-01-10 02:20:51,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:20:51,236 INFO L933 BasicCegarLoop]: 1606 mSDtfsCounter, 225 mSDsluCounter, 4685 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 6291 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:20:51,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 6291 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:20:51,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6403 states. [2022-01-10 02:20:51,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6403 to 4743. [2022-01-10 02:20:51,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4743 states, 4741 states have (on average 1.5032693524572875) internal successors, (7127), 4742 states have internal predecessors, (7127), 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) [2022-01-10 02:20:51,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4743 states to 4743 states and 7127 transitions. [2022-01-10 02:20:51,486 INFO L78 Accepts]: Start accepts. Automaton has 4743 states and 7127 transitions. Word has length 67 [2022-01-10 02:20:51,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:20:51,486 INFO L470 AbstractCegarLoop]: Abstraction has 4743 states and 7127 transitions. [2022-01-10 02:20:51,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-01-10 02:20:51,486 INFO L276 IsEmpty]: Start isEmpty. Operand 4743 states and 7127 transitions. [2022-01-10 02:20:51,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 02:20:51,487 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:20:51,487 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] [2022-01-10 02:20:51,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 02:20:51,487 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:20:51,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:20:51,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1338319212, now seen corresponding path program 1 times [2022-01-10 02:20:51,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:20:51,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735960141] [2022-01-10 02:20:51,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:20:51,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:20:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:20:51,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:20:51,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:20:51,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735960141] [2022-01-10 02:20:51,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735960141] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:20:51,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:20:51,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:20:51,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283313319] [2022-01-10 02:20:51,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:20:51,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:20:51,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:20:51,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:20:51,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:20:51,522 INFO L87 Difference]: Start difference. First operand 4743 states and 7127 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2022-01-10 02:20:51,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:20:51,851 INFO L93 Difference]: Finished difference Result 7246 states and 10781 transitions. [2022-01-10 02:20:51,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:20:51,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2022-01-10 02:20:51,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:20:51,862 INFO L225 Difference]: With dead ends: 7246 [2022-01-10 02:20:51,862 INFO L226 Difference]: Without dead ends: 5867 [2022-01-10 02:20:51,866 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 [2022-01-10 02:20:51,866 INFO L933 BasicCegarLoop]: 1625 mSDtfsCounter, 1511 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:20:51,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1511 Valid, 1708 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:20:51,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5867 states. [2022-01-10 02:20:52,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5867 to 5865. [2022-01-10 02:20:52,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5865 states, 5863 states have (on average 1.4860992665870714) internal successors, (8713), 5864 states have internal predecessors, (8713), 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) [2022-01-10 02:20:52,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5865 states to 5865 states and 8713 transitions. [2022-01-10 02:20:52,209 INFO L78 Accepts]: Start accepts. Automaton has 5865 states and 8713 transitions. Word has length 68 [2022-01-10 02:20:52,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:20:52,209 INFO L470 AbstractCegarLoop]: Abstraction has 5865 states and 8713 transitions. [2022-01-10 02:20:52,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2022-01-10 02:20:52,210 INFO L276 IsEmpty]: Start isEmpty. Operand 5865 states and 8713 transitions. [2022-01-10 02:20:52,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 02:20:52,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:20:52,212 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:20:52,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 02:20:52,212 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:20:52,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:20:52,213 INFO L85 PathProgramCache]: Analyzing trace with hash -482219864, now seen corresponding path program 1 times [2022-01-10 02:20:52,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:20:52,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83407545] [2022-01-10 02:20:52,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:20:52,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:20:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:20:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-10 02:20:52,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:20:52,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83407545] [2022-01-10 02:20:52,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83407545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:20:52,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:20:52,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:20:52,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374161068] [2022-01-10 02:20:52,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:20:52,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:20:52,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:20:52,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:20:52,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:20:52,303 INFO L87 Difference]: Start difference. First operand 5865 states and 8713 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 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) [2022-01-10 02:20:53,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:20:53,500 INFO L93 Difference]: Finished difference Result 24437 states and 35311 transitions. [2022-01-10 02:20:53,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:20:53,501 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 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 95 [2022-01-10 02:20:53,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:20:53,540 INFO L225 Difference]: With dead ends: 24437 [2022-01-10 02:20:53,540 INFO L226 Difference]: Without dead ends: 20867 [2022-01-10 02:20:53,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:20:53,551 INFO L933 BasicCegarLoop]: 1635 mSDtfsCounter, 6643 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6643 SdHoareTripleChecker+Valid, 3571 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:20:53,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6643 Valid, 3571 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:20:53,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20867 states. [2022-01-10 02:20:54,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20867 to 9433. [2022-01-10 02:20:54,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9433 states, 9431 states have (on average 1.4616689640547131) internal successors, (13785), 9432 states have internal predecessors, (13785), 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) [2022-01-10 02:20:54,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9433 states to 9433 states and 13785 transitions. [2022-01-10 02:20:54,301 INFO L78 Accepts]: Start accepts. Automaton has 9433 states and 13785 transitions. Word has length 95 [2022-01-10 02:20:54,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:20:54,301 INFO L470 AbstractCegarLoop]: Abstraction has 9433 states and 13785 transitions. [2022-01-10 02:20:54,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 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) [2022-01-10 02:20:54,301 INFO L276 IsEmpty]: Start isEmpty. Operand 9433 states and 13785 transitions. [2022-01-10 02:20:54,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 02:20:54,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:20:54,304 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:20:54,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 02:20:54,305 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:20:54,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:20:54,306 INFO L85 PathProgramCache]: Analyzing trace with hash -452697646, now seen corresponding path program 1 times [2022-01-10 02:20:54,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:20:54,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901987534] [2022-01-10 02:20:54,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:20:54,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:20:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:20:54,372 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 02:20:54,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:20:54,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901987534] [2022-01-10 02:20:54,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901987534] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:20:54,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:20:54,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:20:54,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634937229] [2022-01-10 02:20:54,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:20:54,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:20:54,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:20:54,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:20:54,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:20:54,374 INFO L87 Difference]: Start difference. First operand 9433 states and 13785 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2022-01-10 02:20:55,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:20:55,835 INFO L93 Difference]: Finished difference Result 28005 states and 40383 transitions. [2022-01-10 02:20:55,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:20:55,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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 95 [2022-01-10 02:20:55,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:20:55,883 INFO L225 Difference]: With dead ends: 28005 [2022-01-10 02:20:55,884 INFO L226 Difference]: Without dead ends: 24435 [2022-01-10 02:20:55,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:20:55,899 INFO L933 BasicCegarLoop]: 1637 mSDtfsCounter, 6531 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6531 SdHoareTripleChecker+Valid, 3625 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:20:55,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6531 Valid, 3625 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:20:55,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24435 states. [2022-01-10 02:20:56,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24435 to 14793. [2022-01-10 02:20:56,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14793 states, 14791 states have (on average 1.443648164424312) internal successors, (21353), 14792 states have internal predecessors, (21353), 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) [2022-01-10 02:20:56,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14793 states to 14793 states and 21353 transitions. [2022-01-10 02:20:56,953 INFO L78 Accepts]: Start accepts. Automaton has 14793 states and 21353 transitions. Word has length 95 [2022-01-10 02:20:56,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:20:56,953 INFO L470 AbstractCegarLoop]: Abstraction has 14793 states and 21353 transitions. [2022-01-10 02:20:56,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2022-01-10 02:20:56,954 INFO L276 IsEmpty]: Start isEmpty. Operand 14793 states and 21353 transitions. [2022-01-10 02:20:56,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 02:20:56,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:20:56,957 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:20:56,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 02:20:56,957 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:20:56,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:20:56,958 INFO L85 PathProgramCache]: Analyzing trace with hash -179009934, now seen corresponding path program 1 times [2022-01-10 02:20:56,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:20:56,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116559756] [2022-01-10 02:20:56,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:20:56,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:20:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:20:57,033 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 02:20:57,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:20:57,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116559756] [2022-01-10 02:20:57,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116559756] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:20:57,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:20:57,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:20:57,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536703188] [2022-01-10 02:20:57,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:20:57,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:20:57,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:20:57,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:20:57,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:20:57,036 INFO L87 Difference]: Start difference. First operand 14793 states and 21353 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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) [2022-01-10 02:20:58,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:20:58,779 INFO L93 Difference]: Finished difference Result 31573 states and 45455 transitions. [2022-01-10 02:20:58,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:20:58,779 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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 95 [2022-01-10 02:20:58,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:20:58,834 INFO L225 Difference]: With dead ends: 31573 [2022-01-10 02:20:58,834 INFO L226 Difference]: Without dead ends: 28003 [2022-01-10 02:20:58,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:20:58,853 INFO L933 BasicCegarLoop]: 1637 mSDtfsCounter, 6537 mSDsluCounter, 2039 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6537 SdHoareTripleChecker+Valid, 3676 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:20:58,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6537 Valid, 3676 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:20:58,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28003 states. [2022-01-10 02:21:00,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28003 to 18361. [2022-01-10 02:21:00,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18361 states, 18359 states have (on average 1.439348548395882) internal successors, (26425), 18360 states have internal predecessors, (26425), 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) [2022-01-10 02:21:00,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18361 states to 18361 states and 26425 transitions. [2022-01-10 02:21:00,276 INFO L78 Accepts]: Start accepts. Automaton has 18361 states and 26425 transitions. Word has length 95 [2022-01-10 02:21:00,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:21:00,277 INFO L470 AbstractCegarLoop]: Abstraction has 18361 states and 26425 transitions. [2022-01-10 02:21:00,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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) [2022-01-10 02:21:00,277 INFO L276 IsEmpty]: Start isEmpty. Operand 18361 states and 26425 transitions. [2022-01-10 02:21:00,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 02:21:00,285 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:21:00,285 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:21:00,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 02:21:00,286 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:21:00,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:21:00,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1640061714, now seen corresponding path program 1 times [2022-01-10 02:21:00,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:21:00,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832708496] [2022-01-10 02:21:00,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:21:00,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:21:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:21:00,368 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 02:21:00,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:21:00,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832708496] [2022-01-10 02:21:00,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832708496] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:21:00,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:21:00,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:21:00,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605725745] [2022-01-10 02:21:00,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:21:00,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:21:00,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:21:00,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:21:00,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:21:00,370 INFO L87 Difference]: Start difference. First operand 18361 states and 26425 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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) [2022-01-10 02:21:02,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:21:02,628 INFO L93 Difference]: Finished difference Result 35141 states and 50527 transitions. [2022-01-10 02:21:02,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:21:02,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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 95 [2022-01-10 02:21:02,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:21:02,679 INFO L225 Difference]: With dead ends: 35141 [2022-01-10 02:21:02,679 INFO L226 Difference]: Without dead ends: 31571 [2022-01-10 02:21:02,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:21:02,694 INFO L933 BasicCegarLoop]: 1635 mSDtfsCounter, 6612 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6612 SdHoareTripleChecker+Valid, 3623 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:21:02,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6612 Valid, 3623 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:21:02,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31571 states. [2022-01-10 02:21:04,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31571 to 21929. [2022-01-10 02:21:04,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21929 states, 21927 states have (on average 1.4364482145300315) internal successors, (31497), 21928 states have internal predecessors, (31497), 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) [2022-01-10 02:21:04,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21929 states to 21929 states and 31497 transitions. [2022-01-10 02:21:04,518 INFO L78 Accepts]: Start accepts. Automaton has 21929 states and 31497 transitions. Word has length 95 [2022-01-10 02:21:04,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:21:04,519 INFO L470 AbstractCegarLoop]: Abstraction has 21929 states and 31497 transitions. [2022-01-10 02:21:04,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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) [2022-01-10 02:21:04,519 INFO L276 IsEmpty]: Start isEmpty. Operand 21929 states and 31497 transitions. [2022-01-10 02:21:04,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 02:21:04,525 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:21:04,525 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:21:04,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 02:21:04,525 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:21:04,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:21:04,526 INFO L85 PathProgramCache]: Analyzing trace with hash -906023264, now seen corresponding path program 1 times [2022-01-10 02:21:04,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:21:04,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992875888] [2022-01-10 02:21:04,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:21:04,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:21:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:21:04,574 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:21:04,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:21:04,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992875888] [2022-01-10 02:21:04,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992875888] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:21:04,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:21:04,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:21:04,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700152566] [2022-01-10 02:21:04,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:21:04,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:21:04,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:21:04,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:21:04,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:21:04,576 INFO L87 Difference]: Start difference. First operand 21929 states and 31497 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2022-01-10 02:21:05,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:21:05,890 INFO L93 Difference]: Finished difference Result 35691 states and 51247 transitions. [2022-01-10 02:21:05,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:21:05,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 97 [2022-01-10 02:21:05,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:21:05,923 INFO L225 Difference]: With dead ends: 35691 [2022-01-10 02:21:05,924 INFO L226 Difference]: Without dead ends: 16057 [2022-01-10 02:21:05,951 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 [2022-01-10 02:21:05,952 INFO L933 BasicCegarLoop]: 1601 mSDtfsCounter, 54 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:21:05,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 3146 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:21:05,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16057 states. [2022-01-10 02:21:07,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16057 to 16055. [2022-01-10 02:21:07,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16055 states, 16053 states have (on average 1.4429701613405594) internal successors, (23164), 16054 states have internal predecessors, (23164), 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) [2022-01-10 02:21:07,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16055 states to 16055 states and 23164 transitions. [2022-01-10 02:21:07,149 INFO L78 Accepts]: Start accepts. Automaton has 16055 states and 23164 transitions. Word has length 97 [2022-01-10 02:21:07,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:21:07,149 INFO L470 AbstractCegarLoop]: Abstraction has 16055 states and 23164 transitions. [2022-01-10 02:21:07,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2022-01-10 02:21:07,150 INFO L276 IsEmpty]: Start isEmpty. Operand 16055 states and 23164 transitions. [2022-01-10 02:21:07,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 02:21:07,154 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:21:07,154 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:21:07,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 02:21:07,154 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:21:07,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:21:07,155 INFO L85 PathProgramCache]: Analyzing trace with hash -615309075, now seen corresponding path program 1 times [2022-01-10 02:21:07,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:21:07,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004671865] [2022-01-10 02:21:07,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:21:07,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:21:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:21:07,245 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 02:21:07,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:21:07,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004671865] [2022-01-10 02:21:07,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004671865] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:21:07,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:21:07,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:21:07,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257093495] [2022-01-10 02:21:07,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:21:07,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:21:07,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:21:07,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:21:07,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:21:07,247 INFO L87 Difference]: Start difference. First operand 16055 states and 23164 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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) [2022-01-10 02:21:09,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:21:09,484 INFO L93 Difference]: Finished difference Result 28547 states and 41090 transitions. [2022-01-10 02:21:09,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:21:09,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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 97 [2022-01-10 02:21:09,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:21:09,526 INFO L225 Difference]: With dead ends: 28547 [2022-01-10 02:21:09,527 INFO L226 Difference]: Without dead ends: 26049 [2022-01-10 02:21:09,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:21:09,534 INFO L933 BasicCegarLoop]: 1634 mSDtfsCounter, 6588 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6588 SdHoareTripleChecker+Valid, 3608 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:21:09,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6588 Valid, 3608 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:21:09,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26049 states. [2022-01-10 02:21:11,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26049 to 18551. [2022-01-10 02:21:11,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18551 states, 18549 states have (on average 1.4402932772656207) internal successors, (26716), 18550 states have internal predecessors, (26716), 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) [2022-01-10 02:21:11,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18551 states to 18551 states and 26716 transitions. [2022-01-10 02:21:11,072 INFO L78 Accepts]: Start accepts. Automaton has 18551 states and 26716 transitions. Word has length 97 [2022-01-10 02:21:11,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:21:11,073 INFO L470 AbstractCegarLoop]: Abstraction has 18551 states and 26716 transitions. [2022-01-10 02:21:11,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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) [2022-01-10 02:21:11,073 INFO L276 IsEmpty]: Start isEmpty. Operand 18551 states and 26716 transitions. [2022-01-10 02:21:11,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 02:21:11,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:21:11,078 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 02:21:11,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 02:21:11,078 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:21:11,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:21:11,079 INFO L85 PathProgramCache]: Analyzing trace with hash -605888281, now seen corresponding path program 1 times [2022-01-10 02:21:11,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:21:11,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630092953] [2022-01-10 02:21:11,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:21:11,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:21:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:21:11,118 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:21:11,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:21:11,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630092953] [2022-01-10 02:21:11,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630092953] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:21:11,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:21:11,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:21:11,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465925611] [2022-01-10 02:21:11,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:21:11,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:21:11,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:21:11,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:21:11,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:21:11,121 INFO L87 Difference]: Start difference. First operand 18551 states and 26716 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2022-01-10 02:21:11,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:21:11,818 INFO L93 Difference]: Finished difference Result 26667 states and 38262 transitions. [2022-01-10 02:21:11,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:21:11,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 98 [2022-01-10 02:21:11,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:21:11,834 INFO L225 Difference]: With dead ends: 26667 [2022-01-10 02:21:11,834 INFO L226 Difference]: Without dead ends: 10441 [2022-01-10 02:21:11,904 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 [2022-01-10 02:21:11,905 INFO L933 BasicCegarLoop]: 1594 mSDtfsCounter, 48 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3131 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:21:11,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 3131 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:21:11,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10441 states. [2022-01-10 02:21:12,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10441 to 10439. [2022-01-10 02:21:12,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10439 states, 10437 states have (on average 1.4437098783175242) internal successors, (15068), 10438 states have internal predecessors, (15068), 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) [2022-01-10 02:21:12,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10439 states to 10439 states and 15068 transitions. [2022-01-10 02:21:12,727 INFO L78 Accepts]: Start accepts. Automaton has 10439 states and 15068 transitions. Word has length 98 [2022-01-10 02:21:12,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:21:12,728 INFO L470 AbstractCegarLoop]: Abstraction has 10439 states and 15068 transitions. [2022-01-10 02:21:12,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2022-01-10 02:21:12,728 INFO L276 IsEmpty]: Start isEmpty. Operand 10439 states and 15068 transitions. [2022-01-10 02:21:12,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 02:21:12,731 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:21:12,731 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 02:21:12,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 02:21:12,731 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:21:12,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:21:12,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1773467421, now seen corresponding path program 1 times [2022-01-10 02:21:12,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:21:12,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384553968] [2022-01-10 02:21:12,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:21:12,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:21:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:21:12,774 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:21:12,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:21:12,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384553968] [2022-01-10 02:21:12,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384553968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:21:12,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:21:12,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:21:12,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436716630] [2022-01-10 02:21:12,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:21:12,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:21:12,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:21:12,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:21:12,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:21:12,776 INFO L87 Difference]: Start difference. First operand 10439 states and 15068 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2022-01-10 02:21:13,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:21:13,279 INFO L93 Difference]: Finished difference Result 14499 states and 20790 transitions. [2022-01-10 02:21:13,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:21:13,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 98 [2022-01-10 02:21:13,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:21:13,289 INFO L225 Difference]: With dead ends: 14499 [2022-01-10 02:21:13,289 INFO L226 Difference]: Without dead ends: 6385 [2022-01-10 02:21:13,298 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 [2022-01-10 02:21:13,299 INFO L933 BasicCegarLoop]: 1587 mSDtfsCounter, 44 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3116 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:21:13,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 3116 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:21:13,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6385 states. [2022-01-10 02:21:13,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6385 to 6383. [2022-01-10 02:21:13,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6383 states, 6381 states have (on average 1.4568249490675442) internal successors, (9296), 6382 states have internal predecessors, (9296), 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) [2022-01-10 02:21:13,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6383 states to 6383 states and 9296 transitions. [2022-01-10 02:21:13,664 INFO L78 Accepts]: Start accepts. Automaton has 6383 states and 9296 transitions. Word has length 98 [2022-01-10 02:21:13,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:21:13,664 INFO L470 AbstractCegarLoop]: Abstraction has 6383 states and 9296 transitions. [2022-01-10 02:21:13,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2022-01-10 02:21:13,664 INFO L276 IsEmpty]: Start isEmpty. Operand 6383 states and 9296 transitions. [2022-01-10 02:21:13,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 02:21:13,666 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:21:13,667 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 02:21:13,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 02:21:13,668 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:21:13,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:21:13,668 INFO L85 PathProgramCache]: Analyzing trace with hash -934897581, now seen corresponding path program 1 times [2022-01-10 02:21:13,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:21:13,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243803015] [2022-01-10 02:21:13,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:21:13,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:21:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:21:13,708 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:21:13,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:21:13,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243803015] [2022-01-10 02:21:13,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243803015] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:21:13,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:21:13,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:21:13,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630277558] [2022-01-10 02:21:13,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:21:13,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:21:13,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:21:13,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:21:13,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:21:13,712 INFO L87 Difference]: Start difference. First operand 6383 states and 9296 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2022-01-10 02:21:13,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:21:13,917 INFO L93 Difference]: Finished difference Result 8415 states and 12132 transitions. [2022-01-10 02:21:13,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:21:13,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 98 [2022-01-10 02:21:13,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:21:13,922 INFO L225 Difference]: With dead ends: 8415 [2022-01-10 02:21:13,922 INFO L226 Difference]: Without dead ends: 4357 [2022-01-10 02:21:13,927 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 [2022-01-10 02:21:13,928 INFO L933 BasicCegarLoop]: 1580 mSDtfsCounter, 40 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3101 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:21:13,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 3101 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:21:13,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4357 states. [2022-01-10 02:21:14,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4357 to 4355. [2022-01-10 02:21:14,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4355 states, 4353 states have (on average 1.4785205605329659) internal successors, (6436), 4354 states have internal predecessors, (6436), 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) [2022-01-10 02:21:14,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4355 states to 4355 states and 6436 transitions. [2022-01-10 02:21:14,138 INFO L78 Accepts]: Start accepts. Automaton has 4355 states and 6436 transitions. Word has length 98 [2022-01-10 02:21:14,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:21:14,138 INFO L470 AbstractCegarLoop]: Abstraction has 4355 states and 6436 transitions. [2022-01-10 02:21:14,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2022-01-10 02:21:14,138 INFO L276 IsEmpty]: Start isEmpty. Operand 4355 states and 6436 transitions. [2022-01-10 02:21:14,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 02:21:14,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:21:14,141 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 02:21:14,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 02:21:14,141 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:21:14,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:21:14,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1022016375, now seen corresponding path program 1 times [2022-01-10 02:21:14,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:21:14,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100239921] [2022-01-10 02:21:14,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:21:14,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:21:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:21:14,417 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:21:14,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:21:14,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100239921] [2022-01-10 02:21:14,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100239921] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:21:14,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660745335] [2022-01-10 02:21:14,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:21:14,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:21:14,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:21:14,427 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) [2022-01-10 02:21:14,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 02:21:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:21:14,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 02:21:14,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:21:15,092 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 02:21:15,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:21:15,396 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 02:21:15,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660745335] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:21:15,396 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 02:21:15,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2022-01-10 02:21:15,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886214550] [2022-01-10 02:21:15,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 02:21:15,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 02:21:15,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:21:15,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 02:21:15,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-01-10 02:21:15,398 INFO L87 Difference]: Start difference. First operand 4355 states and 6436 transitions. Second operand has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 18 states have internal predecessors, (277), 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) [2022-01-10 02:21:20,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:21:20,591 INFO L93 Difference]: Finished difference Result 29531 states and 40620 transitions. [2022-01-10 02:21:20,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-10 02:21:20,593 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 18 states have internal predecessors, (277), 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 98 [2022-01-10 02:21:20,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:21:20,632 INFO L225 Difference]: With dead ends: 29531 [2022-01-10 02:21:20,632 INFO L226 Difference]: Without dead ends: 27501 [2022-01-10 02:21:20,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2232 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1175, Invalid=5467, Unknown=0, NotChecked=0, Total=6642 [2022-01-10 02:21:20,646 INFO L933 BasicCegarLoop]: 1574 mSDtfsCounter, 16924 mSDsluCounter, 5442 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16924 SdHoareTripleChecker+Valid, 7016 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:21:20,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16924 Valid, 7016 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:21:20,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27501 states. [2022-01-10 02:21:22,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27501 to 19602. [2022-01-10 02:21:22,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19602 states, 19600 states have (on average 1.3531122448979591) internal successors, (26521), 19601 states have internal predecessors, (26521), 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) [2022-01-10 02:21:22,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19602 states to 19602 states and 26521 transitions. [2022-01-10 02:21:22,500 INFO L78 Accepts]: Start accepts. Automaton has 19602 states and 26521 transitions. Word has length 98 [2022-01-10 02:21:22,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:21:22,500 INFO L470 AbstractCegarLoop]: Abstraction has 19602 states and 26521 transitions. [2022-01-10 02:21:22,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 18 states have internal predecessors, (277), 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) [2022-01-10 02:21:22,500 INFO L276 IsEmpty]: Start isEmpty. Operand 19602 states and 26521 transitions. [2022-01-10 02:21:22,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 02:21:22,504 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:21:22,504 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:21:22,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 02:21:22,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-01-10 02:21:22,712 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:21:22,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:21:22,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1244176043, now seen corresponding path program 1 times [2022-01-10 02:21:22,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:21:22,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055364509] [2022-01-10 02:21:22,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:21:22,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:21:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:21:22,949 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:21:22,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:21:22,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055364509] [2022-01-10 02:21:22,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055364509] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:21:22,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416729823] [2022-01-10 02:21:22,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:21:22,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:21:22,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:21:22,951 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) [2022-01-10 02:21:22,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 02:21:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:21:23,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 02:21:23,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:21:23,779 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:21:23,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:21:24,626 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:21:24,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416729823] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:21:24,626 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 02:21:24,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2022-01-10 02:21:24,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922328338] [2022-01-10 02:21:24,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 02:21:24,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-10 02:21:24,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:21:24,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-10 02:21:24,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2022-01-10 02:21:24,628 INFO L87 Difference]: Start difference. First operand 19602 states and 26521 transitions. Second operand has 30 states, 30 states have (on average 8.433333333333334) internal successors, (253), 29 states have internal predecessors, (253), 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)