/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_amount50_file-34.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:24:49,730 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:24:49,783 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:24:49,787 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:24:49,788 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:24:49,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:24:49,806 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:24:49,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:24:49,807 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:24:49,807 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:24:49,808 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:24:49,808 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:24:49,809 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:24:49,809 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:24:49,809 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:24:49,810 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:24:49,810 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:24:49,810 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:24:49,811 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:24:49,811 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:24:49,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:24:49,812 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:24:49,812 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:24:49,813 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:24:49,813 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:24:49,813 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:24:49,814 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:24:49,814 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:24:49,814 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:24:49,815 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:24:49,815 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:24:49,816 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:24:49,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:24:49,816 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:24:49,817 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:24:49,817 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:24:49,817 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:24:49,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:24:49,818 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:24:49,818 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:24:49,819 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:24:49,828 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:24:49,828 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:24:49,828 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:24:50,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:24:50,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:24:50,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:24:50,085 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:24:50,085 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:24:50,086 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-34.i [2023-12-15 21:24:51,231 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:24:51,464 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:24:51,465 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-34.i [2023-12-15 21:24:51,475 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b783551db/54ebbcc813574c05ba0279aebbee1abf/FLAGf8d0c6938 [2023-12-15 21:24:51,490 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b783551db/54ebbcc813574c05ba0279aebbee1abf [2023-12-15 21:24:51,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:24:51,494 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:24:51,497 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:24:51,498 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:24:51,502 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:24:51,502 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:24:51" (1/1) ... [2023-12-15 21:24:51,503 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c8fc589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:24:51, skipping insertion in model container [2023-12-15 21:24:51,503 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:24:51" (1/1) ... [2023-12-15 21:24:51,538 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:24:51,673 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_amount50_file-34.i[915,928] [2023-12-15 21:24:51,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:24:51,724 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:24:51,733 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_amount50_file-34.i[915,928] [2023-12-15 21:24:51,757 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:24:51,775 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:24:51,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:24:51 WrapperNode [2023-12-15 21:24:51,779 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:24:51,780 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:24:51,781 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:24:51,781 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:24:51,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:24:51" (1/1) ... [2023-12-15 21:24:51,803 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:24:51" (1/1) ... [2023-12-15 21:24:51,846 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 176 [2023-12-15 21:24:51,847 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:24:51,847 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:24:51,847 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:24:51,848 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:24:51,859 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:24:51" (1/1) ... [2023-12-15 21:24:51,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:24:51" (1/1) ... [2023-12-15 21:24:51,873 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:24:51" (1/1) ... [2023-12-15 21:24:51,892 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]. [2023-12-15 21:24:51,892 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:24:51" (1/1) ... [2023-12-15 21:24:51,892 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:24:51" (1/1) ... [2023-12-15 21:24:51,900 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:24:51" (1/1) ... [2023-12-15 21:24:51,904 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:24:51" (1/1) ... [2023-12-15 21:24:51,906 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:24:51" (1/1) ... [2023-12-15 21:24:51,907 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:24:51" (1/1) ... [2023-12-15 21:24:51,911 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:24:51,911 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:24:51,911 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:24:51,912 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:24:51,916 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:24:51" (1/1) ... [2023-12-15 21:24:51,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:24:51,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:24:51,994 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) [2023-12-15 21:24:52,024 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 [2023-12-15 21:24:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:24:52,039 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:24:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:24:52,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:24:52,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:24:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:24:52,114 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:24:52,116 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:24:52,539 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:24:52,567 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:24:52,567 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:24:52,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:24:52 BoogieIcfgContainer [2023-12-15 21:24:52,568 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:24:52,570 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:24:52,570 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:24:52,573 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:24:52,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:24:51" (1/3) ... [2023-12-15 21:24:52,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5960ed35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:24:52, skipping insertion in model container [2023-12-15 21:24:52,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:24:51" (2/3) ... [2023-12-15 21:24:52,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5960ed35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:24:52, skipping insertion in model container [2023-12-15 21:24:52,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:24:52" (3/3) ... [2023-12-15 21:24:52,575 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-34.i [2023-12-15 21:24:52,591 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:24:52,591 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:24:52,636 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:24:52,643 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;@1b7958a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:24:52,644 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:24:52,648 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 45 states have (on average 1.6) internal successors, (72), 46 states have internal predecessors, (72), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-15 21:24:52,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-15 21:24:52,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:24:52,660 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:24:52,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:24:52,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:24:52,666 INFO L85 PathProgramCache]: Analyzing trace with hash -891774575, now seen corresponding path program 1 times [2023-12-15 21:24:52,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:24:52,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580973682] [2023-12-15 21:24:52,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:24:52,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:24:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:24:52,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:24:52,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580973682] [2023-12-15 21:24:52,855 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:24:52,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865428383] [2023-12-15 21:24:52,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:24:52,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:24:52,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:24:52,859 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) [2023-12-15 21:24:52,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:24:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:24:53,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:24:53,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:24:53,076 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-15 21:24:53,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:24:53,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865428383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:24:53,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:24:53,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:24:53,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951754218] [2023-12-15 21:24:53,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:24:53,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:24:53,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:24:53,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:24:53,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:24:53,121 INFO L87 Difference]: Start difference. First operand has 61 states, 45 states have (on average 1.6) internal successors, (72), 46 states have internal predecessors, (72), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-15 21:24:53,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:24:53,164 INFO L93 Difference]: Finished difference Result 119 states and 207 transitions. [2023-12-15 21:24:53,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:24:53,166 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 90 [2023-12-15 21:24:53,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:24:53,171 INFO L225 Difference]: With dead ends: 119 [2023-12-15 21:24:53,171 INFO L226 Difference]: Without dead ends: 59 [2023-12-15 21:24:53,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:24:53,176 INFO L413 NwaCegarLoop]: 90 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, 90 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 [2023-12-15 21:24:53,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:24:53,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-15 21:24:53,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-12-15 21:24:53,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.5227272727272727) internal successors, (67), 44 states have internal predecessors, (67), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-15 21:24:53,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 93 transitions. [2023-12-15 21:24:53,209 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 93 transitions. Word has length 90 [2023-12-15 21:24:53,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:24:53,210 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 93 transitions. [2023-12-15 21:24:53,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-15 21:24:53,210 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 93 transitions. [2023-12-15 21:24:53,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-15 21:24:53,213 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:24:53,213 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:24:53,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:24:53,420 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 [2023-12-15 21:24:53,420 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:24:53,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:24:53,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1865726257, now seen corresponding path program 1 times [2023-12-15 21:24:53,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:24:53,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628913318] [2023-12-15 21:24:53,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:24:53,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:24:53,480 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:24:53,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [676120419] [2023-12-15 21:24:53,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:24:53,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:24:53,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:24:53,521 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) [2023-12-15 21:24:53,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:24:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:24:53,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:24:53,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:24:53,810 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-15 21:24:53,811 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:24:53,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:24:53,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628913318] [2023-12-15 21:24:53,811 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:24:53,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676120419] [2023-12-15 21:24:53,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676120419] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:24:53,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:24:53,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:24:53,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921174775] [2023-12-15 21:24:53,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:24:53,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:24:53,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:24:53,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:24:53,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:24:53,816 INFO L87 Difference]: Start difference. First operand 59 states and 93 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-15 21:24:54,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:24:54,036 INFO L93 Difference]: Finished difference Result 176 states and 276 transitions. [2023-12-15 21:24:54,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:24:54,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 90 [2023-12-15 21:24:54,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:24:54,043 INFO L225 Difference]: With dead ends: 176 [2023-12-15 21:24:54,043 INFO L226 Difference]: Without dead ends: 118 [2023-12-15 21:24:54,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:24:54,047 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 117 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:24:54,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 325 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:24:54,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-15 21:24:54,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 61. [2023-12-15 21:24:54,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 46 states have (on average 1.5) internal successors, (69), 46 states have internal predecessors, (69), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-15 21:24:54,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 95 transitions. [2023-12-15 21:24:54,072 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 95 transitions. Word has length 90 [2023-12-15 21:24:54,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:24:54,075 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 95 transitions. [2023-12-15 21:24:54,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-15 21:24:54,076 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 95 transitions. [2023-12-15 21:24:54,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-15 21:24:54,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:24:54,083 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:24:54,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:24:54,290 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 [2023-12-15 21:24:54,290 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:24:54,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:24:54,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1740875413, now seen corresponding path program 1 times [2023-12-15 21:24:54,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:24:54,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264660819] [2023-12-15 21:24:54,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:24:54,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:24:54,330 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:24:54,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033506216] [2023-12-15 21:24:54,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:24:54,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:24:54,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:24:54,336 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) [2023-12-15 21:24:54,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:24:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:24:54,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 21:24:54,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:24:54,540 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-15 21:24:54,541 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:24:54,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:24:54,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264660819] [2023-12-15 21:24:54,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:24:54,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033506216] [2023-12-15 21:24:54,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033506216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:24:54,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:24:54,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:24:54,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657342086] [2023-12-15 21:24:54,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:24:54,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:24:54,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:24:54,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:24:54,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:24:54,545 INFO L87 Difference]: Start difference. First operand 61 states and 95 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-15 21:24:54,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:24:54,635 INFO L93 Difference]: Finished difference Result 210 states and 327 transitions. [2023-12-15 21:24:54,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:24:54,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 91 [2023-12-15 21:24:54,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:24:54,639 INFO L225 Difference]: With dead ends: 210 [2023-12-15 21:24:54,639 INFO L226 Difference]: Without dead ends: 150 [2023-12-15 21:24:54,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:24:54,644 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 113 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:24:54,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 295 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:24:54,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-15 21:24:54,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 121. [2023-12-15 21:24:54,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 92 states have (on average 1.4891304347826086) internal successors, (137), 92 states have internal predecessors, (137), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-15 21:24:54,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 189 transitions. [2023-12-15 21:24:54,673 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 189 transitions. Word has length 91 [2023-12-15 21:24:54,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:24:54,674 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 189 transitions. [2023-12-15 21:24:54,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-15 21:24:54,674 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 189 transitions. [2023-12-15 21:24:54,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 21:24:54,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:24:54,678 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:24:54,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:24:54,883 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 [2023-12-15 21:24:54,884 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:24:54,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:24:54,884 INFO L85 PathProgramCache]: Analyzing trace with hash 926432231, now seen corresponding path program 1 times [2023-12-15 21:24:54,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:24:54,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001570] [2023-12-15 21:24:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:24:54,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:24:54,935 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:24:54,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1948570525] [2023-12-15 21:24:54,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:24:54,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:24:54,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:24:54,937 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) [2023-12-15 21:24:54,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:24:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:24:55,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-15 21:24:55,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:24:59,411 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 213 proven. 45 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-15 21:24:59,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:25:10,966 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-15 21:25:10,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:25:10,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001570] [2023-12-15 21:25:10,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:25:10,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948570525] [2023-12-15 21:25:10,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948570525] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:25:10,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:25:10,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19] total 26 [2023-12-15 21:25:10,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177894322] [2023-12-15 21:25:10,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:25:10,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 21:25:10,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:25:10,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 21:25:10,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=520, Unknown=1, NotChecked=0, Total=650 [2023-12-15 21:25:10,972 INFO L87 Difference]: Start difference. First operand 121 states and 189 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-15 21:25:21,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:25:21,789 INFO L93 Difference]: Finished difference Result 367 states and 559 transitions. [2023-12-15 21:25:21,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 21:25:21,790 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2023-12-15 21:25:21,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:25:21,792 INFO L225 Difference]: With dead ends: 367 [2023-12-15 21:25:21,792 INFO L226 Difference]: Without dead ends: 247 [2023-12-15 21:25:21,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=203, Invalid=918, Unknown=1, NotChecked=0, Total=1122 [2023-12-15 21:25:21,794 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 298 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:25:21,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 404 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-15 21:25:21,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-12-15 21:25:21,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 162. [2023-12-15 21:25:21,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 126 states have (on average 1.4523809523809523) internal successors, (183), 127 states have internal predecessors, (183), 31 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-15 21:25:21,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 245 transitions. [2023-12-15 21:25:21,817 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 245 transitions. Word has length 92 [2023-12-15 21:25:21,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:25:21,817 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 245 transitions. [2023-12-15 21:25:21,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-15 21:25:21,818 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 245 transitions. [2023-12-15 21:25:21,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 21:25:21,818 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:25:21,819 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:25:21,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:25:22,019 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 [2023-12-15 21:25:22,020 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:25:22,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:25:22,020 INFO L85 PathProgramCache]: Analyzing trace with hash 983690533, now seen corresponding path program 1 times [2023-12-15 21:25:22,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:25:22,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764236834] [2023-12-15 21:25:22,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:25:22,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:25:22,041 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:25:22,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [47671884] [2023-12-15 21:25:22,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:25:22,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:25:22,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:25:22,043 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) [2023-12-15 21:25:22,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:25:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:25:22,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-15 21:25:22,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:25:27,011 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-15 21:25:27,012 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:25:27,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:25:27,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764236834] [2023-12-15 21:25:27,012 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:25:27,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47671884] [2023-12-15 21:25:27,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47671884] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:25:27,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:25:27,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 21:25:27,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168981085] [2023-12-15 21:25:27,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:25:27,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 21:25:27,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:25:27,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 21:25:27,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:25:27,014 INFO L87 Difference]: Start difference. First operand 162 states and 245 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-15 21:25:33,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:25:33,119 INFO L93 Difference]: Finished difference Result 504 states and 755 transitions. [2023-12-15 21:25:33,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-15 21:25:33,121 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2023-12-15 21:25:33,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:25:33,124 INFO L225 Difference]: With dead ends: 504 [2023-12-15 21:25:33,124 INFO L226 Difference]: Without dead ends: 427 [2023-12-15 21:25:33,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-15 21:25:33,126 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 407 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:25:33,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 687 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-15 21:25:33,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2023-12-15 21:25:33,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 373. [2023-12-15 21:25:33,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 292 states have (on average 1.4349315068493151) internal successors, (419), 293 states have internal predecessors, (419), 70 states have call successors, (70), 10 states have call predecessors, (70), 10 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-15 21:25:33,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 559 transitions. [2023-12-15 21:25:33,196 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 559 transitions. Word has length 92 [2023-12-15 21:25:33,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:25:33,197 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 559 transitions. [2023-12-15 21:25:33,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-15 21:25:33,198 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 559 transitions. [2023-12-15 21:25:33,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 21:25:33,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:25:33,199 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:25:33,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 21:25:33,405 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 [2023-12-15 21:25:33,406 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:25:33,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:25:33,406 INFO L85 PathProgramCache]: Analyzing trace with hash 117085605, now seen corresponding path program 1 times [2023-12-15 21:25:33,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:25:33,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371337299] [2023-12-15 21:25:33,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:25:33,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:25:33,425 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:25:33,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614704518] [2023-12-15 21:25:33,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:25:33,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:25:33,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:25:33,427 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) [2023-12-15 21:25:33,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:25:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:25:33,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-15 21:25:33,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:25:34,848 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 96 proven. 30 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-12-15 21:25:34,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-15 21:25:55,433 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:25:55,445 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 [2023-12-15 21:25:55,546 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:25:55,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 21:25:55,748 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 [2023-12-15 21:25:55,748 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 93 with TraceHistMax 13,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-9-1 term,while PolyPacSimplificationTermWalker was simplifying 9 xjuncts wrt. a ∧-2-1 context. [2023-12-15 21:25:55,752 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-15 21:25:55,755 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:25:55,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:25:55 BoogieIcfgContainer [2023-12-15 21:25:55,757 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:25:55,757 INFO L158 Benchmark]: Toolchain (without parser) took 64262.99ms. Allocated memory was 187.7MB in the beginning and 481.3MB in the end (delta: 293.6MB). Free memory was 146.9MB in the beginning and 214.7MB in the end (delta: -67.8MB). Peak memory consumption was 274.3MB. Max. memory is 8.0GB. [2023-12-15 21:25:55,757 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 187.7MB. Free memory is still 145.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:25:55,758 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.94ms. Allocated memory is still 187.7MB. Free memory was 146.6MB in the beginning and 133.0MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-15 21:25:55,758 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.27ms. Allocated memory is still 187.7MB. Free memory was 133.0MB in the beginning and 129.5MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 21:25:55,758 INFO L158 Benchmark]: Boogie Preprocessor took 63.31ms. Allocated memory is still 187.7MB. Free memory was 129.2MB in the beginning and 124.3MB in the end (delta: 4.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 21:25:55,758 INFO L158 Benchmark]: RCFGBuilder took 656.65ms. Allocated memory is still 187.7MB. Free memory was 124.3MB in the beginning and 158.6MB in the end (delta: -34.3MB). Peak memory consumption was 27.7MB. Max. memory is 8.0GB. [2023-12-15 21:25:55,759 INFO L158 Benchmark]: TraceAbstraction took 63186.88ms. Allocated memory was 187.7MB in the beginning and 481.3MB in the end (delta: 293.6MB). Free memory was 158.0MB in the beginning and 214.7MB in the end (delta: -56.7MB). Peak memory consumption was 284.3MB. Max. memory is 8.0GB. [2023-12-15 21:25:55,760 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 187.7MB. Free memory is still 145.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 281.94ms. Allocated memory is still 187.7MB. Free memory was 146.6MB in the beginning and 133.0MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 66.27ms. Allocated memory is still 187.7MB. Free memory was 133.0MB in the beginning and 129.5MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 63.31ms. Allocated memory is still 187.7MB. Free memory was 129.2MB in the beginning and 124.3MB in the end (delta: 4.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 656.65ms. Allocated memory is still 187.7MB. Free memory was 124.3MB in the beginning and 158.6MB in the end (delta: -34.3MB). Peak memory consumption was 27.7MB. Max. memory is 8.0GB. * TraceAbstraction took 63186.88ms. Allocated memory was 187.7MB in the beginning and 481.3MB in the end (delta: 293.6MB). Free memory was 158.0MB in the beginning and 214.7MB in the end (delta: -56.7MB). Peak memory consumption was 284.3MB. 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 93 with TraceHistMax 13,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-9-1 term,while PolyPacSimplificationTermWalker was simplifying 9 xjuncts wrt. a ∧-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 63.1s, OverallIterations: 6, TraceHistogramMax: 13, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 17.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 935 SdHoareTripleChecker+Valid, 8.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 935 mSDsluCounter, 1801 SdHoareTripleChecker+Invalid, 8.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1236 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1048 IncrementalHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 565 mSDtfsCounter, 1048 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 564 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 16.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=373occurred in iteration=5, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 225 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 20.8s InterpolantComputationTime, 545 NumberOfCodeBlocks, 545 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 541 ConstructedInterpolants, 5 QuantifiedInterpolants, 5767 SizeOfPredicates, 51 NumberOfNonLiveVariables, 1294 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 1827/1872 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