/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-44.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 13:26:35,076 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 13:26:35,142 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 13:26:35,146 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 13:26:35,146 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 13:26:35,168 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 13:26:35,168 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 13:26:35,169 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 13:26:35,169 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 13:26:35,172 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 13:26:35,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 13:26:35,172 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 13:26:35,173 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 13:26:35,174 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 13:26:35,174 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 13:26:35,174 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 13:26:35,174 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 13:26:35,174 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 13:26:35,175 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 13:26:35,176 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 13:26:35,176 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 13:26:35,176 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 13:26:35,176 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 13:26:35,176 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 13:26:35,176 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 13:26:35,177 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 13:26:35,177 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 13:26:35,177 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 13:26:35,177 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 13:26:35,177 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 13:26:35,178 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 13:26:35,178 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 13:26:35,178 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 13:26:35,179 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 13:26:35,179 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 13:26:35,179 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 13:26:35,179 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 13:26:35,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 13:26:35,179 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 13:26:35,179 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 13:26:35,179 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 13:26:35,180 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 13:26:35,180 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 13:26:35,180 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 13:26:35,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 13:26:35,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 13:26:35,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 13:26:35,378 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 13:26:35,380 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 13:26:35,380 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-44.i [2023-12-19 13:26:36,382 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 13:26:36,541 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 13:26:36,542 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-44.i [2023-12-19 13:26:36,549 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af35ea463/98ac818d484343eb9c9bc81b51484e1d/FLAG79bf04f1d [2023-12-19 13:26:36,561 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af35ea463/98ac818d484343eb9c9bc81b51484e1d [2023-12-19 13:26:36,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 13:26:36,564 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 13:26:36,566 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 13:26:36,566 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 13:26:36,569 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 13:26:36,569 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:26:36" (1/1) ... [2023-12-19 13:26:36,570 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7199f12a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:26:36, skipping insertion in model container [2023-12-19 13:26:36,570 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:26:36" (1/1) ... [2023-12-19 13:26:36,593 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 13:26:36,688 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-44.i[915,928] [2023-12-19 13:26:36,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 13:26:36,722 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 13:26:36,736 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-44.i[915,928] [2023-12-19 13:26:36,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 13:26:36,764 INFO L206 MainTranslator]: Completed translation [2023-12-19 13:26:36,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:26:36 WrapperNode [2023-12-19 13:26:36,765 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 13:26:36,765 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 13:26:36,766 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 13:26:36,766 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 13:26:36,770 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:26:36" (1/1) ... [2023-12-19 13:26:36,775 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:26:36" (1/1) ... [2023-12-19 13:26:36,798 INFO L138 Inliner]: procedures = 26, calls = 34, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 132 [2023-12-19 13:26:36,798 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 13:26:36,799 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 13:26:36,799 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 13:26:36,799 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 13:26:36,809 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:26:36" (1/1) ... [2023-12-19 13:26:36,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:26:36" (1/1) ... [2023-12-19 13:26:36,812 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:26:36" (1/1) ... [2023-12-19 13:26:36,833 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]. [2023-12-19 13:26:36,833 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:26:36" (1/1) ... [2023-12-19 13:26:36,833 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:26:36" (1/1) ... [2023-12-19 13:26:36,839 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:26:36" (1/1) ... [2023-12-19 13:26:36,841 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:26:36" (1/1) ... [2023-12-19 13:26:36,843 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:26:36" (1/1) ... [2023-12-19 13:26:36,859 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:26:36" (1/1) ... [2023-12-19 13:26:36,861 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 13:26:36,862 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 13:26:36,862 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 13:26:36,862 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 13:26:36,862 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:26:36" (1/1) ... [2023-12-19 13:26:36,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 13:26:36,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:26:36,893 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) [2023-12-19 13:26:36,909 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 [2023-12-19 13:26:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 13:26:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 13:26:36,917 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 13:26:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 13:26:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 13:26:36,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 13:26:36,992 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 13:26:36,994 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 13:26:37,217 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 13:26:37,251 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 13:26:37,251 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 13:26:37,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:26:37 BoogieIcfgContainer [2023-12-19 13:26:37,251 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 13:26:37,253 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 13:26:37,253 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 13:26:37,255 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 13:26:37,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:26:36" (1/3) ... [2023-12-19 13:26:37,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e262bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:26:37, skipping insertion in model container [2023-12-19 13:26:37,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:26:36" (2/3) ... [2023-12-19 13:26:37,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e262bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:26:37, skipping insertion in model container [2023-12-19 13:26:37,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:26:37" (3/3) ... [2023-12-19 13:26:37,260 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-44.i [2023-12-19 13:26:37,271 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 13:26:37,272 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 13:26:37,308 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 13:26:37,312 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;@7c5cdb54, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 13:26:37,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 13:26:37,314 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 32 states have internal predecessors, (43), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-19 13:26:37,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-19 13:26:37,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:26:37,323 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:26:37,324 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:26:37,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:26:37,327 INFO L85 PathProgramCache]: Analyzing trace with hash 318110618, now seen corresponding path program 1 times [2023-12-19 13:26:37,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:26:37,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648316171] [2023-12-19 13:26:37,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:26:37,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:26:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:26:37,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:26:37,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648316171] [2023-12-19 13:26:37,481 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 13:26:37,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116899432] [2023-12-19 13:26:37,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:26:37,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:26:37,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:26:37,484 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:26:37,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 13:26:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:26:37,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 13:26:37,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:26:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2023-12-19 13:26:37,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:26:37,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116899432] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:26:37,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:26:37,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 13:26:37,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072466203] [2023-12-19 13:26:37,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:26:37,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 13:26:37,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:26:37,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 13:26:37,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 13:26:37,675 INFO L87 Difference]: Start difference. First operand has 55 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 32 states have internal predecessors, (43), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-19 13:26:37,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:26:37,705 INFO L93 Difference]: Finished difference Result 107 states and 189 transitions. [2023-12-19 13:26:37,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 13:26:37,707 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) Word has length 128 [2023-12-19 13:26:37,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:26:37,712 INFO L225 Difference]: With dead ends: 107 [2023-12-19 13:26:37,712 INFO L226 Difference]: Without dead ends: 53 [2023-12-19 13:26:37,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 13:26:37,717 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:26:37,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:26:37,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-12-19 13:26:37,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-12-19 13:26:37,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-19 13:26:37,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 80 transitions. [2023-12-19 13:26:37,742 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 80 transitions. Word has length 128 [2023-12-19 13:26:37,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:26:37,742 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 80 transitions. [2023-12-19 13:26:37,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-19 13:26:37,742 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 80 transitions. [2023-12-19 13:26:37,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-19 13:26:37,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:26:37,746 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:26:37,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 13:26:37,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 13:26:37,947 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:26:37,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:26:37,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1762825000, now seen corresponding path program 1 times [2023-12-19 13:26:37,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:26:37,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688273870] [2023-12-19 13:26:37,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:26:37,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:26:37,995 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:26:37,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1522108000] [2023-12-19 13:26:37,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:26:37,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:26:37,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:26:37,996 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:26:38,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 13:26:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:26:38,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-19 13:26:38,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:26:42,001 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 464 proven. 129 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-12-19 13:26:42,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:26:44,491 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-19 13:26:44,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:26:44,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688273870] [2023-12-19 13:26:44,492 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:26:44,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522108000] [2023-12-19 13:26:44,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522108000] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 13:26:44,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 13:26:44,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [20] total 25 [2023-12-19 13:26:44,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836656383] [2023-12-19 13:26:44,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:26:44,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 13:26:44,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:26:44,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 13:26:44,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2023-12-19 13:26:44,494 INFO L87 Difference]: Start difference. First operand 53 states and 80 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-19 13:26:46,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:26:46,205 INFO L93 Difference]: Finished difference Result 141 states and 205 transitions. [2023-12-19 13:26:46,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 13:26:46,206 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 128 [2023-12-19 13:26:46,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:26:46,207 INFO L225 Difference]: With dead ends: 141 [2023-12-19 13:26:46,208 INFO L226 Difference]: Without dead ends: 89 [2023-12-19 13:26:46,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2023-12-19 13:26:46,209 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 161 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 13:26:46,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 291 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 13:26:46,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-19 13:26:46,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 68. [2023-12-19 13:26:46,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 40 states have (on average 1.25) internal successors, (50), 41 states have internal predecessors, (50), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-19 13:26:46,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 100 transitions. [2023-12-19 13:26:46,225 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 100 transitions. Word has length 128 [2023-12-19 13:26:46,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:26:46,226 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 100 transitions. [2023-12-19 13:26:46,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-19 13:26:46,226 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 100 transitions. [2023-12-19 13:26:46,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-19 13:26:46,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:26:46,229 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:26:46,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 13:26:46,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 13:26:46,435 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:26:46,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:26:46,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1722795670, now seen corresponding path program 1 times [2023-12-19 13:26:46,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:26:46,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112596187] [2023-12-19 13:26:46,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:26:46,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:26:46,471 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:26:46,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1465443498] [2023-12-19 13:26:46,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:26:46,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:26:46,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:26:46,477 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:26:46,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 13:26:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:26:46,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-19 13:26:46,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:26:49,431 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 539 proven. 147 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-12-19 13:26:49,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:26:51,775 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-19 13:26:51,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:26:51,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112596187] [2023-12-19 13:26:51,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:26:51,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465443498] [2023-12-19 13:26:51,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465443498] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 13:26:51,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 13:26:51,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [21] total 26 [2023-12-19 13:26:51,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919957011] [2023-12-19 13:26:51,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:26:51,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 13:26:51,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:26:51,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 13:26:51,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2023-12-19 13:26:51,777 INFO L87 Difference]: Start difference. First operand 68 states and 100 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-19 13:26:53,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:26:53,568 INFO L93 Difference]: Finished difference Result 153 states and 216 transitions. [2023-12-19 13:26:53,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 13:26:53,571 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 128 [2023-12-19 13:26:53,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:26:53,573 INFO L225 Difference]: With dead ends: 153 [2023-12-19 13:26:53,573 INFO L226 Difference]: Without dead ends: 92 [2023-12-19 13:26:53,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2023-12-19 13:26:53,575 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 91 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 13:26:53,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 254 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 13:26:53,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-12-19 13:26:53,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 72. [2023-12-19 13:26:53,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 44 states have internal predecessors, (53), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-19 13:26:53,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 103 transitions. [2023-12-19 13:26:53,590 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 103 transitions. Word has length 128 [2023-12-19 13:26:53,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:26:53,591 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 103 transitions. [2023-12-19 13:26:53,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-19 13:26:53,591 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 103 transitions. [2023-12-19 13:26:53,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-19 13:26:53,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:26:53,592 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:26:53,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 13:26:53,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:26:53,800 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:26:53,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:26:53,800 INFO L85 PathProgramCache]: Analyzing trace with hash 674656796, now seen corresponding path program 1 times [2023-12-19 13:26:53,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:26:53,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626023764] [2023-12-19 13:26:53,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:26:53,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:26:53,818 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:26:53,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2140794084] [2023-12-19 13:26:53,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:26:53,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:26:53,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:26:53,821 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:26:53,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 13:26:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:26:53,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 13:26:53,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:26:55,583 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-19 13:26:55,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:26:55,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:26:55,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626023764] [2023-12-19 13:26:55,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:26:55,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140794084] [2023-12-19 13:26:55,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140794084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:26:55,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:26:55,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 13:26:55,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064655891] [2023-12-19 13:26:55,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:26:55,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 13:26:55,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:26:55,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 13:26:55,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-19 13:26:55,586 INFO L87 Difference]: Start difference. First operand 72 states and 103 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-19 13:26:56,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:26:56,585 INFO L93 Difference]: Finished difference Result 206 states and 284 transitions. [2023-12-19 13:26:56,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 13:26:56,586 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 129 [2023-12-19 13:26:56,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:26:56,587 INFO L225 Difference]: With dead ends: 206 [2023-12-19 13:26:56,587 INFO L226 Difference]: Without dead ends: 141 [2023-12-19 13:26:56,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-19 13:26:56,588 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 122 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 13:26:56,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 371 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 13:26:56,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-12-19 13:26:56,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 83. [2023-12-19 13:26:56,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 50 states have (on average 1.24) internal successors, (62), 51 states have internal predecessors, (62), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-19 13:26:56,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 118 transitions. [2023-12-19 13:26:56,616 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 118 transitions. Word has length 129 [2023-12-19 13:26:56,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:26:56,616 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 118 transitions. [2023-12-19 13:26:56,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-19 13:26:56,616 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 118 transitions. [2023-12-19 13:26:56,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-19 13:26:56,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:26:56,617 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:26:56,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 13:26:56,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:26:56,820 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:26:56,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:26:56,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1354715166, now seen corresponding path program 1 times [2023-12-19 13:26:56,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:26:56,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300924257] [2023-12-19 13:26:56,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:26:56,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:26:56,838 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:26:56,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1527863020] [2023-12-19 13:26:56,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:26:56,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:26:56,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:26:56,842 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:26:56,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 13:26:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:26:56,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-19 13:26:56,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:27:01,922 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 472 proven. 96 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-19 13:27:01,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:27:13,212 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-19 13:27:13,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:27:13,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300924257] [2023-12-19 13:27:13,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:27:13,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527863020] [2023-12-19 13:27:13,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527863020] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 13:27:13,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 13:27:13,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [18] total 25 [2023-12-19 13:27:13,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925656351] [2023-12-19 13:27:13,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:27:13,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 13:27:13,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:27:13,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 13:27:13,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=467, Unknown=3, NotChecked=0, Total=600 [2023-12-19 13:27:13,214 INFO L87 Difference]: Start difference. First operand 83 states and 118 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-19 13:27:22,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:27:22,019 INFO L93 Difference]: Finished difference Result 215 states and 294 transitions. [2023-12-19 13:27:22,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 13:27:22,019 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 129 [2023-12-19 13:27:22,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:27:22,024 INFO L225 Difference]: With dead ends: 215 [2023-12-19 13:27:22,024 INFO L226 Difference]: Without dead ends: 147 [2023-12-19 13:27:22,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=207, Invalid=845, Unknown=4, NotChecked=0, Total=1056 [2023-12-19 13:27:22,030 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 72 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-19 13:27:22,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 396 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-19 13:27:22,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-19 13:27:22,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 84. [2023-12-19 13:27:22,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 52 states have internal predecessors, (64), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-19 13:27:22,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 120 transitions. [2023-12-19 13:27:22,050 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 120 transitions. Word has length 129 [2023-12-19 13:27:22,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:27:22,051 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 120 transitions. [2023-12-19 13:27:22,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-19 13:27:22,051 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 120 transitions. [2023-12-19 13:27:22,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-19 13:27:22,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:27:22,052 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:27:22,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 13:27:22,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:27:22,252 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:27:22,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:27:22,253 INFO L85 PathProgramCache]: Analyzing trace with hash 545368540, now seen corresponding path program 1 times [2023-12-19 13:27:22,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:27:22,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084545372] [2023-12-19 13:27:22,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:27:22,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:27:22,266 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:27:22,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1455647335] [2023-12-19 13:27:22,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:27:22,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:27:22,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:27:22,267 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:27:22,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 13:27:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:27:22,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-19 13:27:22,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:27:26,957 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 524 proven. 111 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2023-12-19 13:27:26,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:27:39,305 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-19 13:27:39,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:27:39,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084545372] [2023-12-19 13:27:39,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:27:39,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455647335] [2023-12-19 13:27:39,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455647335] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 13:27:39,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 13:27:39,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [21] total 27 [2023-12-19 13:27:39,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056400983] [2023-12-19 13:27:39,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:27:39,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 13:27:39,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:27:39,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 13:27:39,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=559, Unknown=3, NotChecked=0, Total=702 [2023-12-19 13:27:39,307 INFO L87 Difference]: Start difference. First operand 84 states and 120 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-19 13:27:46,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:27:46,124 INFO L93 Difference]: Finished difference Result 181 states and 254 transitions. [2023-12-19 13:27:46,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 13:27:46,125 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 129 [2023-12-19 13:27:46,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:27:46,126 INFO L225 Difference]: With dead ends: 181 [2023-12-19 13:27:46,126 INFO L226 Difference]: Without dead ends: 112 [2023-12-19 13:27:46,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=196, Invalid=923, Unknown=3, NotChecked=0, Total=1122 [2023-12-19 13:27:46,127 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 107 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-19 13:27:46,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 315 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-19 13:27:46,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-19 13:27:46,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 83. [2023-12-19 13:27:46,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 50 states have (on average 1.24) internal successors, (62), 51 states have internal predecessors, (62), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-19 13:27:46,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 118 transitions. [2023-12-19 13:27:46,146 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 118 transitions. Word has length 129 [2023-12-19 13:27:46,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:27:46,146 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 118 transitions. [2023-12-19 13:27:46,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-19 13:27:46,146 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 118 transitions. [2023-12-19 13:27:46,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-19 13:27:46,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:27:46,147 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:27:46,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 13:27:46,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:27:46,357 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:27:46,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:27:46,357 INFO L85 PathProgramCache]: Analyzing trace with hash 932822234, now seen corresponding path program 1 times [2023-12-19 13:27:46,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:27:46,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662125133] [2023-12-19 13:27:46,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:27:46,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:27:46,370 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:27:46,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1658589] [2023-12-19 13:27:46,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:27:46,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:27:46,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:27:46,372 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:27:46,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 13:27:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:27:46,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 13:27:46,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:27:47,059 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 472 proven. 96 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-19 13:27:47,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:27:50,451 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-19 13:27:50,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:27:50,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662125133] [2023-12-19 13:27:50,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:27:50,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658589] [2023-12-19 13:27:50,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658589] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 13:27:50,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 13:27:50,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [18] total 24 [2023-12-19 13:27:50,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085219598] [2023-12-19 13:27:50,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:27:50,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 13:27:50,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:27:50,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 13:27:50,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2023-12-19 13:27:50,453 INFO L87 Difference]: Start difference. First operand 83 states and 118 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-19 13:27:56,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 13:28:00,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 13:28:03,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 13:28:07,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 13:28:08,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:28:08,755 INFO L93 Difference]: Finished difference Result 239 states and 324 transitions. [2023-12-19 13:28:08,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 13:28:08,755 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 129 [2023-12-19 13:28:08,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:28:08,756 INFO L225 Difference]: With dead ends: 239 [2023-12-19 13:28:08,756 INFO L226 Difference]: Without dead ends: 171 [2023-12-19 13:28:08,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=227, Invalid=895, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 13:28:08,757 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 176 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2023-12-19 13:28:08,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 435 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 299 Invalid, 3 Unknown, 0 Unchecked, 13.4s Time] [2023-12-19 13:28:08,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-12-19 13:28:08,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 83. [2023-12-19 13:28:08,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 50 states have (on average 1.24) internal successors, (62), 51 states have internal predecessors, (62), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-19 13:28:08,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 118 transitions. [2023-12-19 13:28:08,778 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 118 transitions. Word has length 129 [2023-12-19 13:28:08,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:28:08,778 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 118 transitions. [2023-12-19 13:28:08,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-19 13:28:08,778 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 118 transitions. [2023-12-19 13:28:08,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-19 13:28:08,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:28:08,779 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:28:08,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 13:28:08,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:28:08,993 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:28:08,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:28:08,993 INFO L85 PathProgramCache]: Analyzing trace with hash 123475608, now seen corresponding path program 1 times [2023-12-19 13:28:08,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:28:08,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643121762] [2023-12-19 13:28:08,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:28:08,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:28:09,008 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:28:09,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360877924] [2023-12-19 13:28:09,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:28:09,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:28:09,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:28:09,010 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:28:09,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 13:28:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:28:09,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 13:28:09,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:28:09,327 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-19 13:28:09,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:28:09,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:28:09,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643121762] [2023-12-19 13:28:09,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:28:09,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360877924] [2023-12-19 13:28:09,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360877924] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:28:09,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:28:09,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 13:28:09,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209682616] [2023-12-19 13:28:09,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:28:09,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 13:28:09,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:28:09,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 13:28:09,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-19 13:28:09,329 INFO L87 Difference]: Start difference. First operand 83 states and 118 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-19 13:28:09,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:28:09,686 INFO L93 Difference]: Finished difference Result 208 states and 285 transitions. [2023-12-19 13:28:09,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 13:28:09,687 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 129 [2023-12-19 13:28:09,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:28:09,688 INFO L225 Difference]: With dead ends: 208 [2023-12-19 13:28:09,688 INFO L226 Difference]: Without dead ends: 140 [2023-12-19 13:28:09,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-19 13:28:09,688 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 122 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 13:28:09,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 420 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 13:28:09,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-19 13:28:09,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 75. [2023-12-19 13:28:09,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 43 states have internal predecessors, (49), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-19 13:28:09,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 105 transitions. [2023-12-19 13:28:09,707 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 105 transitions. Word has length 129 [2023-12-19 13:28:09,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:28:09,707 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 105 transitions. [2023-12-19 13:28:09,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-19 13:28:09,708 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 105 transitions. [2023-12-19 13:28:09,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-19 13:28:09,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:28:09,708 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:28:09,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 13:28:09,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 13:28:09,914 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:28:09,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:28:09,914 INFO L85 PathProgramCache]: Analyzing trace with hash 2101820157, now seen corresponding path program 1 times [2023-12-19 13:28:09,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:28:09,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87009625] [2023-12-19 13:28:09,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:28:09,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:28:09,928 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:28:09,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1226726137] [2023-12-19 13:28:09,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:28:09,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:28:09,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:28:09,929 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:28:09,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 13:28:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:28:09,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-19 13:28:09,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:30:43,769 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 335 proven. 87 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2023-12-19 13:30:43,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:30:56,274 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:31:05,830 WARN L293 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:31:13,030 WARN L293 SmtUtils]: Spent 7.18s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:31:44,832 WARN L293 SmtUtils]: Spent 7.03s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:33:09,221 WARN L293 SmtUtils]: Spent 54.76s on a formula simplification. DAG size of input: 73 DAG size of output: 66 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 13:33:17,618 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:33:22,861 WARN L293 SmtUtils]: Spent 5.24s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:33:45,074 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:33:57,151 WARN L293 SmtUtils]: Spent 7.75s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:34:19,007 WARN L293 SmtUtils]: Spent 7.36s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:34:23,118 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse9 (* c_~var_1_1~0 (mod c_~var_1_8~0 256)))) (let ((.cse17 (+ .cse9 1)) (.cse18 (mod c_~var_1_17~0 4294967296))) (let ((.cse1 (= .cse18 (mod c_~var_1_7~0 256))) (.cse5 (< 0 .cse17)) (.cse4 (= .cse18 (mod c_~var_1_11~0 256))) (.cse8 (<= .cse17 0))) (and (or (let ((.cse10 (* (- 1) c_~var_1_14~0))) (let ((.cse7 (div .cse9 .cse10)) (.cse6 (= (mod .cse9 .cse10) 0))) (let ((.cse2 (and (not .cse6) .cse8)) (.cse0 (= c_~var_1_1~0 (+ .cse7 1)))) (and (or .cse0 (let ((.cse3 (= c_~var_1_1~0 .cse7))) (and (or .cse1 .cse2 (not .cse3)) (or .cse3 .cse4) (or .cse5 .cse4 .cse6)))) (or (and (or .cse4 .cse2) (or .cse5 .cse1 .cse6)) (not .cse0)))))) (< 0 c_~var_1_14~0)) (or (let ((.cse16 (div .cse9 c_~var_1_14~0))) (let ((.cse12 (= (mod .cse9 c_~var_1_14~0) 0)) (.cse15 (= c_~var_1_1~0 .cse16))) (let ((.cse11 (not .cse15)) (.cse13 (= (+ .cse16 1) c_~var_1_1~0)) (.cse14 (not .cse12))) (and (or .cse5 .cse11 .cse12 .cse4) (or .cse1 (and (or .cse5 (not .cse13) .cse12) (or .cse11 (and .cse14 .cse8)))) (or .cse15 .cse4 (and .cse13 .cse14 .cse8)))))) (< c_~var_1_14~0 1)))))) is different from false [2023-12-19 13:34:47,545 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:35:00,016 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:35:24,665 WARN L293 SmtUtils]: Spent 7.31s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:35:32,930 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:35:39,862 WARN L293 SmtUtils]: Spent 6.37s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:36:04,422 WARN L293 SmtUtils]: Spent 7.87s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:36:30,047 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:36:38,053 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:36:50,070 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:37:28,871 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:37:36,878 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:37:47,864 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:38:03,886 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:38:11,894 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:38:17,091 WARN L293 SmtUtils]: Spent 5.20s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:38:33,760 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:38:49,778 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:38:57,784 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:39:05,790 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:39:30,243 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:39:38,251 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:39:46,256 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:39:58,269 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:40:20,948 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:40:28,954 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:40:40,967 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:40:55,146 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:41:03,152 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:41:15,380 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-12-19 13:41:15,671 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 13:41:15,671 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 13:41:16,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 13:41:16,872 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-19 13:41:16,915 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 13:41:16,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 13:41:16,915 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 131 with TraceHistMax 21,while TraceCheckSpWp was constructing backward predicates,while executing Executor. [2023-12-19 13:41:16,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-19 13:41:16,919 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:41:16,920 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 13:41:16,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 01:41:16 BoogieIcfgContainer [2023-12-19 13:41:16,923 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 13:41:16,923 INFO L158 Benchmark]: Toolchain (without parser) took 880359.67ms. Allocated memory was 184.5MB in the beginning and 615.5MB in the end (delta: 431.0MB). Free memory was 139.6MB in the beginning and 552.8MB in the end (delta: -413.2MB). Peak memory consumption was 353.7MB. Max. memory is 8.0GB. [2023-12-19 13:41:16,924 INFO L158 Benchmark]: CDTParser took 0.93ms. Allocated memory is still 184.5MB. Free memory was 141.3MB in the beginning and 141.1MB in the end (delta: 255.2kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 13:41:16,924 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.15ms. Allocated memory is still 184.5MB. Free memory was 139.1MB in the beginning and 126.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-19 13:41:16,925 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.71ms. Allocated memory is still 184.5MB. Free memory was 126.5MB in the beginning and 123.2MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-19 13:41:16,925 INFO L158 Benchmark]: Boogie Preprocessor took 62.61ms. Allocated memory is still 184.5MB. Free memory was 123.2MB in the beginning and 118.6MB in the end (delta: 4.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-19 13:41:16,925 INFO L158 Benchmark]: RCFGBuilder took 389.70ms. Allocated memory is still 184.5MB. Free memory was 118.6MB in the beginning and 98.0MB in the end (delta: 20.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-19 13:41:16,925 INFO L158 Benchmark]: TraceAbstraction took 879670.24ms. Allocated memory was 184.5MB in the beginning and 615.5MB in the end (delta: 431.0MB). Free memory was 97.2MB in the beginning and 552.8MB in the end (delta: -455.6MB). Peak memory consumption was 311.8MB. Max. memory is 8.0GB. [2023-12-19 13:41:16,926 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.93ms. Allocated memory is still 184.5MB. Free memory was 141.3MB in the beginning and 141.1MB in the end (delta: 255.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 199.15ms. Allocated memory is still 184.5MB. Free memory was 139.1MB in the beginning and 126.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.71ms. Allocated memory is still 184.5MB. Free memory was 126.5MB in the beginning and 123.2MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 62.61ms. Allocated memory is still 184.5MB. Free memory was 123.2MB in the beginning and 118.6MB in the end (delta: 4.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 389.70ms. Allocated memory is still 184.5MB. Free memory was 118.6MB in the beginning and 98.0MB in the end (delta: 20.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 879670.24ms. Allocated memory was 184.5MB in the beginning and 615.5MB in the end (delta: 431.0MB). Free memory was 97.2MB in the beginning and 552.8MB in the end (delta: -455.6MB). Peak memory consumption was 311.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 131 with TraceHistMax 21,while TraceCheckSpWp was constructing backward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 879.6s, OverallIterations: 9, TraceHistogramMax: 21, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 38.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 851 SdHoareTripleChecker+Valid, 23.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 851 mSDsluCounter, 2559 SdHoareTripleChecker+Invalid, 23.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1847 mSDsCounter, 77 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1796 IncrementalHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 77 mSolverCounterUnsat, 712 mSDtfsCounter, 1796 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1711 GetRequests, 1532 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1451 ImplicationChecksByTransitivity, 38.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=5, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 344 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 50.5s InterpolantComputationTime, 1157 NumberOfCodeBlocks, 1157 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1659 ConstructedInterpolants, 11 QuantifiedInterpolants, 26192 SizeOfPredicates, 144 NumberOfNonLiveVariables, 2327 ConjunctsInSsa, 180 ConjunctsInUnsatCore, 13 InterpolantComputations, 8 PerfectInterpolantSequences, 10341/10920 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown