/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.8.1.ufo.BOUNDED-16.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 11:58:33,170 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 11:58:33,237 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 11:58:33,241 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 11:58:33,241 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 11:58:33,261 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 11:58:33,262 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 11:58:33,262 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 11:58:33,262 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 11:58:33,265 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 11:58:33,265 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 11:58:33,266 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 11:58:33,266 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 11:58:33,267 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 11:58:33,267 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 11:58:33,267 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 11:58:33,267 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 11:58:33,267 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 11:58:33,268 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 11:58:33,269 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 11:58:33,269 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 11:58:33,269 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 11:58:33,269 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 11:58:33,269 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 11:58:33,269 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 11:58:33,270 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 11:58:33,270 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 11:58:33,270 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 11:58:33,270 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 11:58:33,270 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 11:58:33,271 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 11:58:33,271 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 11:58:33,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:58:33,271 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 11:58:33,271 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 11:58:33,272 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 11:58:33,272 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 11:58:33,272 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 11:58:33,272 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 11:58:33,272 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 11:58:33,272 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 11:58:33,272 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 11:58:33,273 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 11:58:33,273 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 11:58:33,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 11:58:33,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 11:58:33,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 11:58:33,446 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 11:58:33,447 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 11:58:33,447 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.8.1.ufo.BOUNDED-16.pals.c [2023-12-21 11:58:34,412 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 11:58:34,711 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 11:58:34,711 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.8.1.ufo.BOUNDED-16.pals.c [2023-12-21 11:58:34,727 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a15d4847/93dc9badf0fa4c6d9a4e629ba8aacec7/FLAG8370e00ce [2023-12-21 11:58:34,739 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a15d4847/93dc9badf0fa4c6d9a4e629ba8aacec7 [2023-12-21 11:58:34,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 11:58:34,741 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 11:58:34,742 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 11:58:34,742 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 11:58:34,746 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 11:58:34,746 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:58:34" (1/1) ... [2023-12-21 11:58:34,747 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3885db01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:58:34, skipping insertion in model container [2023-12-21 11:58:34,747 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:58:34" (1/1) ... [2023-12-21 11:58:34,789 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 11:58:34,990 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.8.1.ufo.BOUNDED-16.pals.c[26490,26503] [2023-12-21 11:58:34,993 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:58:35,001 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 11:58:35,053 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.8.1.ufo.BOUNDED-16.pals.c[26490,26503] [2023-12-21 11:58:35,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:58:35,079 INFO L206 MainTranslator]: Completed translation [2023-12-21 11:58:35,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:58:35 WrapperNode [2023-12-21 11:58:35,079 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 11:58:35,080 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 11:58:35,080 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 11:58:35,080 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 11:58:35,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:58:35" (1/1) ... [2023-12-21 11:58:35,093 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:58:35" (1/1) ... [2023-12-21 11:58:35,125 INFO L138 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 525 [2023-12-21 11:58:35,126 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 11:58:35,127 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 11:58:35,127 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 11:58:35,127 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 11:58:35,141 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:58:35" (1/1) ... [2023-12-21 11:58:35,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:58:35" (1/1) ... [2023-12-21 11:58:35,144 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:58:35" (1/1) ... [2023-12-21 11:58:35,155 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 11:58:35,156 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:58:35" (1/1) ... [2023-12-21 11:58:35,156 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:58:35" (1/1) ... [2023-12-21 11:58:35,162 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:58:35" (1/1) ... [2023-12-21 11:58:35,180 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:58:35" (1/1) ... [2023-12-21 11:58:35,182 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:58:35" (1/1) ... [2023-12-21 11:58:35,184 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:58:35" (1/1) ... [2023-12-21 11:58:35,199 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 11:58:35,199 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 11:58:35,199 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 11:58:35,199 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 11:58:35,200 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:58:35" (1/1) ... [2023-12-21 11:58:35,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:58:35,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:58:35,231 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 11:58:35,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 11:58:35,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 11:58:35,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 11:58:35,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 11:58:35,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 11:58:35,374 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 11:58:35,376 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 11:58:35,808 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 11:58:35,850 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 11:58:35,851 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 11:58:35,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:58:35 BoogieIcfgContainer [2023-12-21 11:58:35,851 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 11:58:35,853 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 11:58:35,853 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 11:58:35,855 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 11:58:35,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:58:34" (1/3) ... [2023-12-21 11:58:35,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432c7123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:58:35, skipping insertion in model container [2023-12-21 11:58:35,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:58:35" (2/3) ... [2023-12-21 11:58:35,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432c7123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:58:35, skipping insertion in model container [2023-12-21 11:58:35,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:58:35" (3/3) ... [2023-12-21 11:58:35,857 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.BOUNDED-16.pals.c [2023-12-21 11:58:35,870 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 11:58:35,870 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 11:58:35,903 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 11:58:35,907 INFO L357 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=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@395018e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 11:58:35,907 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 11:58:35,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 124 states have (on average 1.8306451612903225) internal successors, (227), 125 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:58:35,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-21 11:58:35,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:58:35,917 INFO L195 NwaCegarLoop]: 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] [2023-12-21 11:58:35,917 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:58:35,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:58:35,920 INFO L85 PathProgramCache]: Analyzing trace with hash -675569035, now seen corresponding path program 1 times [2023-12-21 11:58:35,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:58:35,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425060512] [2023-12-21 11:58:35,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:58:35,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:58:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:58:36,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:58:36,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:58:36,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425060512] [2023-12-21 11:58:36,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425060512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:58:36,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:58:36,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 11:58:36,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356373655] [2023-12-21 11:58:36,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:58:36,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 11:58:36,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:58:36,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 11:58:36,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 11:58:36,176 INFO L87 Difference]: Start difference. First operand has 126 states, 124 states have (on average 1.8306451612903225) internal successors, (227), 125 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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) [2023-12-21 11:58:36,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:58:36,211 INFO L93 Difference]: Finished difference Result 188 states and 328 transitions. [2023-12-21 11:58:36,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 11:58:36,212 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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 26 [2023-12-21 11:58:36,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:58:36,219 INFO L225 Difference]: With dead ends: 188 [2023-12-21 11:58:36,219 INFO L226 Difference]: Without dead ends: 124 [2023-12-21 11:58:36,221 INFO L412 NwaCegarLoop]: 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 [2023-12-21 11:58:36,223 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:58:36,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 220 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:58:36,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-21 11:58:36,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2023-12-21 11:58:36,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.8048780487804879) internal successors, (222), 123 states have internal predecessors, (222), 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) [2023-12-21 11:58:36,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 222 transitions. [2023-12-21 11:58:36,255 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 222 transitions. Word has length 26 [2023-12-21 11:58:36,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:58:36,256 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 222 transitions. [2023-12-21 11:58:36,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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) [2023-12-21 11:58:36,256 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 222 transitions. [2023-12-21 11:58:36,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-21 11:58:36,257 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:58:36,257 INFO L195 NwaCegarLoop]: 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] [2023-12-21 11:58:36,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 11:58:36,258 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:58:36,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:58:36,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1813959927, now seen corresponding path program 1 times [2023-12-21 11:58:36,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:58:36,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769593232] [2023-12-21 11:58:36,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:58:36,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:58:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:58:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:58:36,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:58:36,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769593232] [2023-12-21 11:58:36,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769593232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:58:36,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:58:36,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:58:36,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106542077] [2023-12-21 11:58:36,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:58:36,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:58:36,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:58:36,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:58:36,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:58:36,420 INFO L87 Difference]: Start difference. First operand 124 states and 222 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2023-12-21 11:58:36,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:58:36,509 INFO L93 Difference]: Finished difference Result 186 states and 321 transitions. [2023-12-21 11:58:36,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:58:36,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2023-12-21 11:58:36,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:58:36,510 INFO L225 Difference]: With dead ends: 186 [2023-12-21 11:58:36,510 INFO L226 Difference]: Without dead ends: 124 [2023-12-21 11:58:36,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:58:36,512 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 0 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:58:36,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 593 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:58:36,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-21 11:58:36,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2023-12-21 11:58:36,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.3089430894308942) internal successors, (161), 123 states have internal predecessors, (161), 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) [2023-12-21 11:58:36,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 161 transitions. [2023-12-21 11:58:36,521 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 161 transitions. Word has length 26 [2023-12-21 11:58:36,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:58:36,522 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 161 transitions. [2023-12-21 11:58:36,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2023-12-21 11:58:36,522 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 161 transitions. [2023-12-21 11:58:36,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-21 11:58:36,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:58:36,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:58:36,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 11:58:36,524 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:58:36,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:58:36,524 INFO L85 PathProgramCache]: Analyzing trace with hash -2084592409, now seen corresponding path program 1 times [2023-12-21 11:58:36,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:58:36,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703673960] [2023-12-21 11:58:36,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:58:36,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:58:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:58:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:58:36,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:58:36,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703673960] [2023-12-21 11:58:36,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703673960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:58:36,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:58:36,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 11:58:36,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148700824] [2023-12-21 11:58:36,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:58:36,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 11:58:36,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:58:36,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 11:58:36,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 11:58:36,775 INFO L87 Difference]: Start difference. First operand 124 states and 161 transitions. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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) [2023-12-21 11:58:37,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:58:37,292 INFO L93 Difference]: Finished difference Result 1068 states and 1697 transitions. [2023-12-21 11:58:37,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 11:58:37,293 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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 86 [2023-12-21 11:58:37,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:58:37,299 INFO L225 Difference]: With dead ends: 1068 [2023-12-21 11:58:37,300 INFO L226 Difference]: Without dead ends: 1009 [2023-12-21 11:58:37,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2023-12-21 11:58:37,304 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 1835 mSDsluCounter, 4990 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1835 SdHoareTripleChecker+Valid, 5144 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:58:37,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1835 Valid, 5144 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 11:58:37,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2023-12-21 11:58:37,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 181. [2023-12-21 11:58:37,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.4111111111111112) internal successors, (254), 180 states have internal predecessors, (254), 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) [2023-12-21 11:58:37,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 254 transitions. [2023-12-21 11:58:37,332 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 254 transitions. Word has length 86 [2023-12-21 11:58:37,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:58:37,332 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 254 transitions. [2023-12-21 11:58:37,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 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) [2023-12-21 11:58:37,333 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 254 transitions. [2023-12-21 11:58:37,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 11:58:37,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:58:37,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:58:37,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 11:58:37,335 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:58:37,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:58:37,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1695805079, now seen corresponding path program 1 times [2023-12-21 11:58:37,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:58:37,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324402210] [2023-12-21 11:58:37,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:58:37,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:58:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:58:37,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:58:37,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:58:37,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324402210] [2023-12-21 11:58:37,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324402210] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:58:37,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:58:37,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:58:37,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237567478] [2023-12-21 11:58:37,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:58:37,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:58:37,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:58:37,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:58:37,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:58:37,435 INFO L87 Difference]: Start difference. First operand 181 states and 254 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2023-12-21 11:58:37,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:58:37,452 INFO L93 Difference]: Finished difference Result 402 states and 613 transitions. [2023-12-21 11:58:37,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:58:37,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 88 [2023-12-21 11:58:37,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:58:37,454 INFO L225 Difference]: With dead ends: 402 [2023-12-21 11:58:37,454 INFO L226 Difference]: Without dead ends: 286 [2023-12-21 11:58:37,458 INFO L412 NwaCegarLoop]: 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 [2023-12-21 11:58:37,464 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 66 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:58:37,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 246 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:58:37,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-12-21 11:58:37,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2023-12-21 11:58:37,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.4840989399293287) internal successors, (420), 283 states have internal predecessors, (420), 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) [2023-12-21 11:58:37,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 420 transitions. [2023-12-21 11:58:37,491 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 420 transitions. Word has length 88 [2023-12-21 11:58:37,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:58:37,491 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 420 transitions. [2023-12-21 11:58:37,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2023-12-21 11:58:37,492 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 420 transitions. [2023-12-21 11:58:37,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 11:58:37,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:58:37,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:58:37,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 11:58:37,494 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:58:37,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:58:37,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1697950031, now seen corresponding path program 1 times [2023-12-21 11:58:37,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:58:37,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956833424] [2023-12-21 11:58:37,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:58:37,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:58:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:58:37,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:58:37,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:58:37,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956833424] [2023-12-21 11:58:37,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956833424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:58:37,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:58:37,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 11:58:37,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265955869] [2023-12-21 11:58:37,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:58:37,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 11:58:37,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:58:37,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 11:58:37,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-21 11:58:37,856 INFO L87 Difference]: Start difference. First operand 284 states and 420 transitions. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 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) [2023-12-21 11:58:38,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:58:38,195 INFO L93 Difference]: Finished difference Result 505 states and 776 transitions. [2023-12-21 11:58:38,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:58:38,196 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 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 88 [2023-12-21 11:58:38,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:58:38,197 INFO L225 Difference]: With dead ends: 505 [2023-12-21 11:58:38,197 INFO L226 Difference]: Without dead ends: 286 [2023-12-21 11:58:38,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:58:38,198 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 480 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:58:38,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 795 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:58:38,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-12-21 11:58:38,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2023-12-21 11:58:38,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.4770318021201414) internal successors, (418), 283 states have internal predecessors, (418), 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) [2023-12-21 11:58:38,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 418 transitions. [2023-12-21 11:58:38,203 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 418 transitions. Word has length 88 [2023-12-21 11:58:38,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:58:38,203 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 418 transitions. [2023-12-21 11:58:38,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 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) [2023-12-21 11:58:38,204 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 418 transitions. [2023-12-21 11:58:38,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 11:58:38,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:58:38,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:58:38,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 11:58:38,205 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:58:38,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:58:38,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1082771095, now seen corresponding path program 1 times [2023-12-21 11:58:38,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:58:38,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214069308] [2023-12-21 11:58:38,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:58:38,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:58:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:58:38,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:58:38,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:58:38,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214069308] [2023-12-21 11:58:38,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214069308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:58:38,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:58:38,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:58:38,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749776929] [2023-12-21 11:58:38,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:58:38,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:58:38,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:58:38,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:58:38,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:58:38,395 INFO L87 Difference]: Start difference. First operand 284 states and 418 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2023-12-21 11:58:38,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:58:38,417 INFO L93 Difference]: Finished difference Result 292 states and 427 transitions. [2023-12-21 11:58:38,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:58:38,418 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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 89 [2023-12-21 11:58:38,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:58:38,419 INFO L225 Difference]: With dead ends: 292 [2023-12-21 11:58:38,419 INFO L226 Difference]: Without dead ends: 290 [2023-12-21 11:58:38,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:58:38,419 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 2 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:58:38,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 770 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:58:38,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-12-21 11:58:38,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 288. [2023-12-21 11:58:38,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.4668989547038327) internal successors, (421), 287 states have internal predecessors, (421), 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) [2023-12-21 11:58:38,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 421 transitions. [2023-12-21 11:58:38,425 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 421 transitions. Word has length 89 [2023-12-21 11:58:38,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:58:38,425 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 421 transitions. [2023-12-21 11:58:38,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2023-12-21 11:58:38,426 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 421 transitions. [2023-12-21 11:58:38,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 11:58:38,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:58:38,426 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:58:38,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 11:58:38,427 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:58:38,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:58:38,427 INFO L85 PathProgramCache]: Analyzing trace with hash 2123044207, now seen corresponding path program 1 times [2023-12-21 11:58:38,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:58:38,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060800913] [2023-12-21 11:58:38,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:58:38,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:58:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:58:38,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:58:38,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:58:38,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060800913] [2023-12-21 11:58:38,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060800913] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:58:38,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:58:38,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:58:38,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817943694] [2023-12-21 11:58:38,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:58:38,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:58:38,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:58:38,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:58:38,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:58:38,476 INFO L87 Difference]: Start difference. First operand 288 states and 421 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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) [2023-12-21 11:58:38,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:58:38,489 INFO L93 Difference]: Finished difference Result 522 states and 794 transitions. [2023-12-21 11:58:38,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:58:38,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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 90 [2023-12-21 11:58:38,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:58:38,490 INFO L225 Difference]: With dead ends: 522 [2023-12-21 11:58:38,491 INFO L226 Difference]: Without dead ends: 402 [2023-12-21 11:58:38,491 INFO L412 NwaCegarLoop]: 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 [2023-12-21 11:58:38,491 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 86 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:58:38,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 334 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:58:38,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-12-21 11:58:38,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 400. [2023-12-21 11:58:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 1.4987468671679198) internal successors, (598), 399 states have internal predecessors, (598), 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) [2023-12-21 11:58:38,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 598 transitions. [2023-12-21 11:58:38,499 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 598 transitions. Word has length 90 [2023-12-21 11:58:38,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:58:38,499 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 598 transitions. [2023-12-21 11:58:38,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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) [2023-12-21 11:58:38,499 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 598 transitions. [2023-12-21 11:58:38,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 11:58:38,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:58:38,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:58:38,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 11:58:38,500 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:58:38,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:58:38,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2097310609, now seen corresponding path program 1 times [2023-12-21 11:58:38,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:58:38,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327694930] [2023-12-21 11:58:38,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:58:38,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:58:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:58:38,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:58:38,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:58:38,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327694930] [2023-12-21 11:58:38,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327694930] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:58:38,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:58:38,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:58:38,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112645419] [2023-12-21 11:58:38,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:58:38,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:58:38,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:58:38,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:58:38,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:58:38,547 INFO L87 Difference]: Start difference. First operand 400 states and 598 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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) [2023-12-21 11:58:38,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:58:38,563 INFO L93 Difference]: Finished difference Result 1042 states and 1618 transitions. [2023-12-21 11:58:38,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:58:38,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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 90 [2023-12-21 11:58:38,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:58:38,565 INFO L225 Difference]: With dead ends: 1042 [2023-12-21 11:58:38,565 INFO L226 Difference]: Without dead ends: 709 [2023-12-21 11:58:38,566 INFO L412 NwaCegarLoop]: 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 [2023-12-21 11:58:38,566 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 84 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:58:38,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 340 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:58:38,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2023-12-21 11:58:38,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 707. [2023-12-21 11:58:38,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 706 states have (on average 1.5297450424929178) internal successors, (1080), 706 states have internal predecessors, (1080), 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) [2023-12-21 11:58:38,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1080 transitions. [2023-12-21 11:58:38,579 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1080 transitions. Word has length 90 [2023-12-21 11:58:38,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:58:38,579 INFO L495 AbstractCegarLoop]: Abstraction has 707 states and 1080 transitions. [2023-12-21 11:58:38,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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) [2023-12-21 11:58:38,579 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1080 transitions. [2023-12-21 11:58:38,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 11:58:38,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:58:38,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:58:38,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 11:58:38,580 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:58:38,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:58:38,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1341926545, now seen corresponding path program 1 times [2023-12-21 11:58:38,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:58:38,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94774774] [2023-12-21 11:58:38,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:58:38,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:58:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:58:38,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:58:38,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:58:38,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94774774] [2023-12-21 11:58:38,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94774774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:58:38,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:58:38,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:58:38,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777224469] [2023-12-21 11:58:38,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:58:38,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:58:38,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:58:38,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:58:38,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:58:38,672 INFO L87 Difference]: Start difference. First operand 707 states and 1080 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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) [2023-12-21 11:58:38,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:58:38,704 INFO L93 Difference]: Finished difference Result 1939 states and 3022 transitions. [2023-12-21 11:58:38,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:58:38,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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 90 [2023-12-21 11:58:38,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:58:38,708 INFO L225 Difference]: With dead ends: 1939 [2023-12-21 11:58:38,708 INFO L226 Difference]: Without dead ends: 1299 [2023-12-21 11:58:38,709 INFO L412 NwaCegarLoop]: 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 [2023-12-21 11:58:38,711 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 82 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:58:38,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 342 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:58:38,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2023-12-21 11:58:38,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1297. [2023-12-21 11:58:38,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1297 states, 1296 states have (on average 1.5401234567901234) internal successors, (1996), 1296 states have internal predecessors, (1996), 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) [2023-12-21 11:58:38,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 1996 transitions. [2023-12-21 11:58:38,746 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 1996 transitions. Word has length 90 [2023-12-21 11:58:38,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:58:38,746 INFO L495 AbstractCegarLoop]: Abstraction has 1297 states and 1996 transitions. [2023-12-21 11:58:38,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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) [2023-12-21 11:58:38,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 1996 transitions. [2023-12-21 11:58:38,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 11:58:38,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:58:38,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:58:38,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 11:58:38,747 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:58:38,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:58:38,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1752313233, now seen corresponding path program 1 times [2023-12-21 11:58:38,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:58:38,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023572375] [2023-12-21 11:58:38,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:58:38,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:58:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:58:38,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:58:38,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:58:38,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023572375] [2023-12-21 11:58:38,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023572375] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:58:38,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:58:38,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:58:38,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291981835] [2023-12-21 11:58:38,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:58:38,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:58:38,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:58:38,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:58:38,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:58:38,810 INFO L87 Difference]: Start difference. First operand 1297 states and 1996 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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) [2023-12-21 11:58:38,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:58:38,848 INFO L93 Difference]: Finished difference Result 3661 states and 5686 transitions. [2023-12-21 11:58:38,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:58:38,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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 90 [2023-12-21 11:58:38,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:58:38,855 INFO L225 Difference]: With dead ends: 3661 [2023-12-21 11:58:38,855 INFO L226 Difference]: Without dead ends: 2431 [2023-12-21 11:58:38,856 INFO L412 NwaCegarLoop]: 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 [2023-12-21 11:58:38,856 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 80 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:58:38,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 344 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:58:38,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2023-12-21 11:58:38,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2429. [2023-12-21 11:58:38,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2429 states, 2428 states have (on average 1.5370675453047775) internal successors, (3732), 2428 states have internal predecessors, (3732), 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) [2023-12-21 11:58:38,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 3732 transitions. [2023-12-21 11:58:38,902 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 3732 transitions. Word has length 90 [2023-12-21 11:58:38,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:58:38,902 INFO L495 AbstractCegarLoop]: Abstraction has 2429 states and 3732 transitions. [2023-12-21 11:58:38,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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) [2023-12-21 11:58:38,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 3732 transitions. [2023-12-21 11:58:38,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 11:58:38,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:58:38,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:58:38,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 11:58:38,905 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:58:38,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:58:38,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1980952465, now seen corresponding path program 1 times [2023-12-21 11:58:38,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:58:38,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234769972] [2023-12-21 11:58:38,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:58:38,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:58:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:58:38,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:58:38,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:58:38,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234769972] [2023-12-21 11:58:38,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234769972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:58:38,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:58:38,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:58:38,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313262459] [2023-12-21 11:58:38,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:58:38,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:58:38,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:58:38,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:58:38,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:58:38,984 INFO L87 Difference]: Start difference. First operand 2429 states and 3732 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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) [2023-12-21 11:58:39,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:58:39,042 INFO L93 Difference]: Finished difference Result 6961 states and 10726 transitions. [2023-12-21 11:58:39,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:58:39,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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 90 [2023-12-21 11:58:39,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:58:39,054 INFO L225 Difference]: With dead ends: 6961 [2023-12-21 11:58:39,054 INFO L226 Difference]: Without dead ends: 4599 [2023-12-21 11:58:39,057 INFO L412 NwaCegarLoop]: 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 [2023-12-21 11:58:39,057 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 76 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:58:39,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 340 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:58:39,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4599 states. [2023-12-21 11:58:39,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4599 to 4597. [2023-12-21 11:58:39,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4597 states, 4596 states have (on average 1.525674499564839) internal successors, (7012), 4596 states have internal predecessors, (7012), 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) [2023-12-21 11:58:39,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4597 states to 4597 states and 7012 transitions. [2023-12-21 11:58:39,171 INFO L78 Accepts]: Start accepts. Automaton has 4597 states and 7012 transitions. Word has length 90 [2023-12-21 11:58:39,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:58:39,171 INFO L495 AbstractCegarLoop]: Abstraction has 4597 states and 7012 transitions. [2023-12-21 11:58:39,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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) [2023-12-21 11:58:39,172 INFO L276 IsEmpty]: Start isEmpty. Operand 4597 states and 7012 transitions. [2023-12-21 11:58:39,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 11:58:39,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:58:39,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:58:39,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 11:58:39,173 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:58:39,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:58:39,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1688358767, now seen corresponding path program 1 times [2023-12-21 11:58:39,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:58:39,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125546774] [2023-12-21 11:58:39,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:58:39,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:58:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:58:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:58:39,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:58:39,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125546774] [2023-12-21 11:58:39,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125546774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:58:39,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:58:39,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:58:39,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434096085] [2023-12-21 11:58:39,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:58:39,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:58:39,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:58:39,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:58:39,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:58:39,218 INFO L87 Difference]: Start difference. First operand 4597 states and 7012 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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) [2023-12-21 11:58:39,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:58:39,325 INFO L93 Difference]: Finished difference Result 13273 states and 20230 transitions. [2023-12-21 11:58:39,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:58:39,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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 90 [2023-12-21 11:58:39,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:58:39,346 INFO L225 Difference]: With dead ends: 13273 [2023-12-21 11:58:39,346 INFO L226 Difference]: Without dead ends: 8743 [2023-12-21 11:58:39,352 INFO L412 NwaCegarLoop]: 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 [2023-12-21 11:58:39,352 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 74 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:58:39,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 342 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:58:39,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8743 states. [2023-12-21 11:58:39,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8743 to 8741. [2023-12-21 11:58:39,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8741 states, 8740 states have (on average 1.508924485125858) internal successors, (13188), 8740 states have internal predecessors, (13188), 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) [2023-12-21 11:58:39,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8741 states to 8741 states and 13188 transitions. [2023-12-21 11:58:39,570 INFO L78 Accepts]: Start accepts. Automaton has 8741 states and 13188 transitions. Word has length 90 [2023-12-21 11:58:39,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:58:39,570 INFO L495 AbstractCegarLoop]: Abstraction has 8741 states and 13188 transitions. [2023-12-21 11:58:39,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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) [2023-12-21 11:58:39,571 INFO L276 IsEmpty]: Start isEmpty. Operand 8741 states and 13188 transitions. [2023-12-21 11:58:39,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 11:58:39,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:58:39,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:58:39,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 11:58:39,571 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:58:39,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:58:39,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1717875089, now seen corresponding path program 1 times [2023-12-21 11:58:39,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:58:39,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220918083] [2023-12-21 11:58:39,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:58:39,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:58:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:58:39,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:58:39,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:58:39,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220918083] [2023-12-21 11:58:39,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220918083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:58:39,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:58:39,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:58:39,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524052524] [2023-12-21 11:58:39,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:58:39,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:58:39,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:58:39,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:58:39,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:58:39,617 INFO L87 Difference]: Start difference. First operand 8741 states and 13188 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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) [2023-12-21 11:58:39,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:58:39,852 INFO L93 Difference]: Finished difference Result 25321 states and 38086 transitions. [2023-12-21 11:58:39,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:58:39,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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 90 [2023-12-21 11:58:39,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:58:39,898 INFO L225 Difference]: With dead ends: 25321 [2023-12-21 11:58:39,898 INFO L226 Difference]: Without dead ends: 16647 [2023-12-21 11:58:39,910 INFO L412 NwaCegarLoop]: 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 [2023-12-21 11:58:39,911 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 72 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:58:39,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 344 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:58:39,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16647 states. [2023-12-21 11:58:40,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16647 to 16645. [2023-12-21 11:58:40,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16645 states, 16644 states have (on average 1.4883441480413362) internal successors, (24772), 16644 states have internal predecessors, (24772), 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) [2023-12-21 11:58:40,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16645 states to 16645 states and 24772 transitions. [2023-12-21 11:58:40,383 INFO L78 Accepts]: Start accepts. Automaton has 16645 states and 24772 transitions. Word has length 90 [2023-12-21 11:58:40,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:58:40,383 INFO L495 AbstractCegarLoop]: Abstraction has 16645 states and 24772 transitions. [2023-12-21 11:58:40,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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) [2023-12-21 11:58:40,384 INFO L276 IsEmpty]: Start isEmpty. Operand 16645 states and 24772 transitions. [2023-12-21 11:58:40,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 11:58:40,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:58:40,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:58:40,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 11:58:40,385 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:58:40,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:58:40,386 INFO L85 PathProgramCache]: Analyzing trace with hash -2020896401, now seen corresponding path program 1 times [2023-12-21 11:58:40,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:58:40,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839586769] [2023-12-21 11:58:40,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:58:40,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:58:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:58:40,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:58:40,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:58:40,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839586769] [2023-12-21 11:58:40,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839586769] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:58:40,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:58:40,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:58:40,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048801458] [2023-12-21 11:58:40,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:58:40,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:58:40,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:58:40,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:58:40,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:58:40,434 INFO L87 Difference]: Start difference. First operand 16645 states and 24772 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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) [2023-12-21 11:58:40,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:58:40,858 INFO L93 Difference]: Finished difference Result 48265 states and 71494 transitions. [2023-12-21 11:58:40,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:58:40,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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 90 [2023-12-21 11:58:40,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:58:40,907 INFO L225 Difference]: With dead ends: 48265 [2023-12-21 11:58:40,907 INFO L226 Difference]: Without dead ends: 31687 [2023-12-21 11:58:40,927 INFO L412 NwaCegarLoop]: 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 [2023-12-21 11:58:40,927 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 78 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:58:40,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 346 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:58:40,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31687 states. [2023-12-21 11:58:41,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31687 to 31685. [2023-12-21 11:58:41,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31685 states, 31684 states have (on average 1.46458780457013) internal successors, (46404), 31684 states have internal predecessors, (46404), 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) [2023-12-21 11:58:41,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31685 states to 31685 states and 46404 transitions. [2023-12-21 11:58:41,842 INFO L78 Accepts]: Start accepts. Automaton has 31685 states and 46404 transitions. Word has length 90 [2023-12-21 11:58:41,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:58:41,842 INFO L495 AbstractCegarLoop]: Abstraction has 31685 states and 46404 transitions. [2023-12-21 11:58:41,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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) [2023-12-21 11:58:41,842 INFO L276 IsEmpty]: Start isEmpty. Operand 31685 states and 46404 transitions. [2023-12-21 11:58:41,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 11:58:41,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:58:41,848 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:58:41,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 11:58:41,860 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:58:41,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:58:41,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1197016696, now seen corresponding path program 1 times [2023-12-21 11:58:41,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:58:41,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591159539] [2023-12-21 11:58:41,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:58:41,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:58:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:58:42,085 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:58:42,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:58:42,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591159539] [2023-12-21 11:58:42,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591159539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:58:42,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:58:42,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 11:58:42,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077486656] [2023-12-21 11:58:42,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:58:42,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 11:58:42,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:58:42,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 11:58:42,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-21 11:58:42,086 INFO L87 Difference]: Start difference. First operand 31685 states and 46404 transitions. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2023-12-21 11:58:45,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:58:45,322 INFO L93 Difference]: Finished difference Result 281303 states and 412109 transitions. [2023-12-21 11:58:45,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:58:45,323 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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 114 [2023-12-21 11:58:45,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:58:45,969 INFO L225 Difference]: With dead ends: 281303 [2023-12-21 11:58:45,969 INFO L226 Difference]: Without dead ends: 259285 [2023-12-21 11:58:46,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:58:46,065 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 1617 mSDsluCounter, 2225 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 2479 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:58:46,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 2479 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:58:46,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259285 states. [2023-12-21 11:58:48,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259285 to 58565. [2023-12-21 11:58:48,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58565 states, 58564 states have (on average 1.4589850420053274) internal successors, (85444), 58564 states have internal predecessors, (85444), 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) [2023-12-21 11:58:49,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58565 states to 58565 states and 85444 transitions. [2023-12-21 11:58:49,074 INFO L78 Accepts]: Start accepts. Automaton has 58565 states and 85444 transitions. Word has length 114 [2023-12-21 11:58:49,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:58:49,074 INFO L495 AbstractCegarLoop]: Abstraction has 58565 states and 85444 transitions. [2023-12-21 11:58:49,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2023-12-21 11:58:49,074 INFO L276 IsEmpty]: Start isEmpty. Operand 58565 states and 85444 transitions. [2023-12-21 11:58:49,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 11:58:49,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:58:49,080 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:58:49,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 11:58:49,080 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:58:49,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:58:49,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1122404216, now seen corresponding path program 1 times [2023-12-21 11:58:49,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:58:49,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382754099] [2023-12-21 11:58:49,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:58:49,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:58:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:58:49,277 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:58:49,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:58:49,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382754099] [2023-12-21 11:58:49,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382754099] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:58:49,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:58:49,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 11:58:49,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412611299] [2023-12-21 11:58:49,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:58:49,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 11:58:49,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:58:49,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 11:58:49,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-21 11:58:49,279 INFO L87 Difference]: Start difference. First operand 58565 states and 85444 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 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) [2023-12-21 11:58:53,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:58:53,781 INFO L93 Difference]: Finished difference Result 312919 states and 458189 transitions. [2023-12-21 11:58:53,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:58:53,781 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 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 114 [2023-12-21 11:58:53,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:58:54,192 INFO L225 Difference]: With dead ends: 312919 [2023-12-21 11:58:54,193 INFO L226 Difference]: Without dead ends: 281301 [2023-12-21 11:58:54,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:58:54,273 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 1619 mSDsluCounter, 2183 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:58:54,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 2436 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:58:54,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281301 states. [2023-12-21 11:58:58,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281301 to 101189. [2023-12-21 11:58:58,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101189 states, 101188 states have (on average 1.4553899671897854) internal successors, (147268), 101188 states have internal predecessors, (147268), 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) [2023-12-21 11:58:58,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101189 states to 101189 states and 147268 transitions. [2023-12-21 11:58:58,493 INFO L78 Accepts]: Start accepts. Automaton has 101189 states and 147268 transitions. Word has length 114 [2023-12-21 11:58:58,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:58:58,494 INFO L495 AbstractCegarLoop]: Abstraction has 101189 states and 147268 transitions. [2023-12-21 11:58:58,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 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) [2023-12-21 11:58:58,494 INFO L276 IsEmpty]: Start isEmpty. Operand 101189 states and 147268 transitions. [2023-12-21 11:58:58,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 11:58:58,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:58:58,506 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:58:58,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 11:58:58,506 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:58:58,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:58:58,507 INFO L85 PathProgramCache]: Analyzing trace with hash -367020152, now seen corresponding path program 1 times [2023-12-21 11:58:58,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:58:58,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477769145] [2023-12-21 11:58:58,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:58:58,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:58:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:58:58,680 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 11:58:58,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:58:58,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477769145] [2023-12-21 11:58:58,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477769145] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:58:58,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:58:58,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 11:58:58,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004354881] [2023-12-21 11:58:58,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:58:58,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 11:58:58,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:58:58,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 11:58:58,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-21 11:58:58,682 INFO L87 Difference]: Start difference. First operand 101189 states and 147268 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 10 states have internal predecessors, (109), 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) [2023-12-21 11:59:04,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:59:04,658 INFO L93 Difference]: Finished difference Result 344535 states and 504141 transitions. [2023-12-21 11:59:04,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:59:04,664 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 10 states have internal predecessors, (109), 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 114 [2023-12-21 11:59:04,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:59:05,108 INFO L225 Difference]: With dead ends: 344535 [2023-12-21 11:59:05,108 INFO L226 Difference]: Without dead ends: 312917 [2023-12-21 11:59:05,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:59:05,180 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 1642 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 2328 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:59:05,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1642 Valid, 2328 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:59:05,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312917 states. [2023-12-21 11:59:09,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312917 to 132805. [2023-12-21 11:59:10,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132805 states, 132804 states have (on average 1.454926056444083) internal successors, (193220), 132804 states have internal predecessors, (193220), 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) [2023-12-21 11:59:10,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132805 states to 132805 states and 193220 transitions. [2023-12-21 11:59:10,425 INFO L78 Accepts]: Start accepts. Automaton has 132805 states and 193220 transitions. Word has length 114 [2023-12-21 11:59:10,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:59:10,425 INFO L495 AbstractCegarLoop]: Abstraction has 132805 states and 193220 transitions. [2023-12-21 11:59:10,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 10 states have internal predecessors, (109), 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) [2023-12-21 11:59:10,425 INFO L276 IsEmpty]: Start isEmpty. Operand 132805 states and 193220 transitions. [2023-12-21 11:59:10,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 11:59:10,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:59:10,434 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:59:10,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 11:59:10,434 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:59:10,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:59:10,435 INFO L85 PathProgramCache]: Analyzing trace with hash -777406840, now seen corresponding path program 1 times [2023-12-21 11:59:10,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:59:10,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175812852] [2023-12-21 11:59:10,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:59:10,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:59:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:59:10,629 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 11:59:10,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:59:10,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175812852] [2023-12-21 11:59:10,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175812852] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:59:10,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:59:10,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 11:59:10,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823199560] [2023-12-21 11:59:10,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:59:10,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 11:59:10,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:59:10,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 11:59:10,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-21 11:59:10,631 INFO L87 Difference]: Start difference. First operand 132805 states and 193220 transitions. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 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) [2023-12-21 11:59:17,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:59:17,678 INFO L93 Difference]: Finished difference Result 376151 states and 550093 transitions. [2023-12-21 11:59:17,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:59:17,679 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 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 114 [2023-12-21 11:59:17,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:59:18,364 INFO L225 Difference]: With dead ends: 376151 [2023-12-21 11:59:18,364 INFO L226 Difference]: Without dead ends: 344533 [2023-12-21 11:59:18,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:59:18,408 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 1727 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:59:18,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1727 Valid, 2276 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:59:18,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344533 states. [2023-12-21 11:59:24,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344533 to 164421. [2023-12-21 11:59:24,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164421 states, 164420 states have (on average 1.4546405546770467) internal successors, (239172), 164420 states have internal predecessors, (239172), 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) [2023-12-21 11:59:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164421 states to 164421 states and 239172 transitions. [2023-12-21 11:59:24,591 INFO L78 Accepts]: Start accepts. Automaton has 164421 states and 239172 transitions. Word has length 114 [2023-12-21 11:59:24,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:59:24,591 INFO L495 AbstractCegarLoop]: Abstraction has 164421 states and 239172 transitions. [2023-12-21 11:59:24,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 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) [2023-12-21 11:59:24,592 INFO L276 IsEmpty]: Start isEmpty. Operand 164421 states and 239172 transitions. [2023-12-21 11:59:24,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 11:59:24,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:59:24,602 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:59:24,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 11:59:24,602 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:59:24,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:59:24,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1006046072, now seen corresponding path program 1 times [2023-12-21 11:59:24,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:59:24,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488880876] [2023-12-21 11:59:24,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:59:24,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:59:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:59:24,758 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 11:59:24,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:59:24,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488880876] [2023-12-21 11:59:24,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488880876] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:59:24,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:59:24,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 11:59:24,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451811663] [2023-12-21 11:59:24,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:59:24,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 11:59:24,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:59:24,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 11:59:24,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-21 11:59:24,761 INFO L87 Difference]: Start difference. First operand 164421 states and 239172 transitions. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 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) [2023-12-21 11:59:33,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:59:33,362 INFO L93 Difference]: Finished difference Result 407767 states and 596045 transitions. [2023-12-21 11:59:33,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:59:33,362 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 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 114 [2023-12-21 11:59:33,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:59:34,118 INFO L225 Difference]: With dead ends: 407767 [2023-12-21 11:59:34,119 INFO L226 Difference]: Without dead ends: 376149 [2023-12-21 11:59:34,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:59:34,191 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 1812 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 2269 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:59:34,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1812 Valid, 2269 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:59:34,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376149 states. [2023-12-21 11:59:40,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376149 to 196037. [2023-12-21 11:59:41,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196037 states, 196036 states have (on average 1.454447142361607) internal successors, (285124), 196036 states have internal predecessors, (285124), 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) [2023-12-21 11:59:41,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196037 states to 196037 states and 285124 transitions. [2023-12-21 11:59:41,479 INFO L78 Accepts]: Start accepts. Automaton has 196037 states and 285124 transitions. Word has length 114 [2023-12-21 11:59:41,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:59:41,479 INFO L495 AbstractCegarLoop]: Abstraction has 196037 states and 285124 transitions. [2023-12-21 11:59:41,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 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) [2023-12-21 11:59:41,479 INFO L276 IsEmpty]: Start isEmpty. Operand 196037 states and 285124 transitions. [2023-12-21 11:59:41,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 11:59:41,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:59:41,490 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:59:41,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 11:59:41,490 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:59:41,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:59:41,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1631702136, now seen corresponding path program 1 times [2023-12-21 11:59:41,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:59:41,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356628622] [2023-12-21 11:59:41,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:59:41,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:59:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:59:41,643 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 11:59:41,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:59:41,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356628622] [2023-12-21 11:59:41,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356628622] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:59:41,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:59:41,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 11:59:41,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217828807] [2023-12-21 11:59:41,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:59:41,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 11:59:41,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:59:41,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 11:59:41,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-21 11:59:41,644 INFO L87 Difference]: Start difference. First operand 196037 states and 285124 transitions. Second operand has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 states have internal predecessors, (101), 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) [2023-12-21 11:59:51,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:59:51,694 INFO L93 Difference]: Finished difference Result 439383 states and 641997 transitions. [2023-12-21 11:59:51,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:59:51,695 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 states have internal predecessors, (101), 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 114 [2023-12-21 11:59:51,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:59:52,655 INFO L225 Difference]: With dead ends: 439383 [2023-12-21 11:59:52,655 INFO L226 Difference]: Without dead ends: 407765 [2023-12-21 11:59:52,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:59:52,812 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1884 mSDsluCounter, 1989 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1884 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:59:52,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1884 Valid, 2234 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 11:59:53,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407765 states. [2023-12-21 12:00:00,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407765 to 227653. [2023-12-21 12:00:00,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227653 states, 227652 states have (on average 1.454307451724562) internal successors, (331076), 227652 states have internal predecessors, (331076), 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) [2023-12-21 12:00:01,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227653 states to 227653 states and 331076 transitions. [2023-12-21 12:00:01,230 INFO L78 Accepts]: Start accepts. Automaton has 227653 states and 331076 transitions. Word has length 114 [2023-12-21 12:00:01,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:00:01,231 INFO L495 AbstractCegarLoop]: Abstraction has 227653 states and 331076 transitions. [2023-12-21 12:00:01,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 states have internal predecessors, (101), 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) [2023-12-21 12:00:01,231 INFO L276 IsEmpty]: Start isEmpty. Operand 227653 states and 331076 transitions. [2023-12-21 12:00:01,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 12:00:01,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:00:01,241 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:00:01,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 12:00:01,241 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:00:01,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:00:01,242 INFO L85 PathProgramCache]: Analyzing trace with hash -742968696, now seen corresponding path program 1 times [2023-12-21 12:00:01,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:00:01,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629385235] [2023-12-21 12:00:01,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:00:01,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:00:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:00:01,404 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 12:00:01,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:00:01,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629385235] [2023-12-21 12:00:01,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629385235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:00:01,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:00:01,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 12:00:01,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846229658] [2023-12-21 12:00:01,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:00:01,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 12:00:01,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:00:01,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 12:00:01,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-21 12:00:01,406 INFO L87 Difference]: Start difference. First operand 227653 states and 331076 transitions. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 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) [2023-12-21 12:00:13,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:00:13,474 INFO L93 Difference]: Finished difference Result 470999 states and 687949 transitions. [2023-12-21 12:00:13,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 12:00:13,475 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 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 114 [2023-12-21 12:00:13,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:00:14,780 INFO L225 Difference]: With dead ends: 470999 [2023-12-21 12:00:14,781 INFO L226 Difference]: Without dead ends: 439381 [2023-12-21 12:00:14,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-21 12:00:14,904 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1689 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 12:00:14,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 2326 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 12:00:15,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439381 states. [2023-12-21 12:00:24,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439381 to 259269. [2023-12-21 12:00:24,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259269 states, 259268 states have (on average 1.4542018297668822) internal successors, (377028), 259268 states have internal predecessors, (377028), 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) [2023-12-21 12:00:25,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259269 states to 259269 states and 377028 transitions. [2023-12-21 12:00:25,366 INFO L78 Accepts]: Start accepts. Automaton has 259269 states and 377028 transitions. Word has length 114 [2023-12-21 12:00:25,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:00:25,367 INFO L495 AbstractCegarLoop]: Abstraction has 259269 states and 377028 transitions. [2023-12-21 12:00:25,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 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) [2023-12-21 12:00:25,367 INFO L276 IsEmpty]: Start isEmpty. Operand 259269 states and 377028 transitions. [2023-12-21 12:00:25,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 12:00:25,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:00:25,399 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:00:25,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 12:00:25,399 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:00:25,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:00:25,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1045990008, now seen corresponding path program 1 times [2023-12-21 12:00:25,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:00:25,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621319459] [2023-12-21 12:00:25,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:00:25,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:00:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:00:25,618 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 12:00:25,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:00:25,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621319459] [2023-12-21 12:00:25,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621319459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:00:25,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:00:25,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 12:00:25,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405731767] [2023-12-21 12:00:25,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:00:25,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 12:00:25,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:00:25,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 12:00:25,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-21 12:00:25,620 INFO L87 Difference]: Start difference. First operand 259269 states and 377028 transitions. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 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) [2023-12-21 12:00:39,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:00:39,040 INFO L93 Difference]: Finished difference Result 502615 states and 733901 transitions. [2023-12-21 12:00:39,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 12:00:39,041 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 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 114 [2023-12-21 12:00:39,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:00:40,174 INFO L225 Difference]: With dead ends: 502615 [2023-12-21 12:00:40,174 INFO L226 Difference]: Without dead ends: 470997 [2023-12-21 12:00:40,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-21 12:00:40,351 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 1555 mSDsluCounter, 2395 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 2639 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 12:00:40,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 2639 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 12:00:40,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470997 states. [2023-12-21 12:00:51,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470997 to 290885. [2023-12-21 12:00:52,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290885 states, 290884 states have (on average 1.4541191677782208) internal successors, (422980), 290884 states have internal predecessors, (422980), 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) [2023-12-21 12:00:52,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290885 states to 290885 states and 422980 transitions. [2023-12-21 12:00:52,966 INFO L78 Accepts]: Start accepts. Automaton has 290885 states and 422980 transitions. Word has length 114 [2023-12-21 12:00:52,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:00:52,967 INFO L495 AbstractCegarLoop]: Abstraction has 290885 states and 422980 transitions. [2023-12-21 12:00:52,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 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) [2023-12-21 12:00:52,967 INFO L276 IsEmpty]: Start isEmpty. Operand 290885 states and 422980 transitions. [2023-12-21 12:00:52,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-21 12:00:52,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:00:52,980 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:00:52,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 12:00:52,980 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:00:52,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:00:52,980 INFO L85 PathProgramCache]: Analyzing trace with hash 461321069, now seen corresponding path program 1 times [2023-12-21 12:00:52,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:00:52,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023451719] [2023-12-21 12:00:52,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:00:52,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:00:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:00:53,186 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 12:00:53,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:00:53,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023451719] [2023-12-21 12:00:53,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023451719] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:00:53,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:00:53,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 12:00:53,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290461857] [2023-12-21 12:00:53,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:00:53,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 12:00:53,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:00:53,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 12:00:53,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 12:00:53,188 INFO L87 Difference]: Start difference. First operand 290885 states and 422980 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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)