/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-patterns/array18_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 00:18:27,755 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 00:18:27,803 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 00:18:27,812 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 00:18:27,812 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 00:18:27,841 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 00:18:27,841 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 00:18:27,841 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 00:18:27,842 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 00:18:27,845 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 00:18:27,845 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 00:18:27,845 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 00:18:27,846 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 00:18:27,847 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 00:18:27,847 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 00:18:27,847 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 00:18:27,847 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 00:18:27,847 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 00:18:27,847 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 00:18:27,848 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 00:18:27,848 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 00:18:27,848 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 00:18:27,848 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 00:18:27,848 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 00:18:27,849 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 00:18:27,849 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 00:18:27,849 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 00:18:27,849 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 00:18:27,849 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 00:18:27,850 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 00:18:27,850 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 00:18:27,850 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 00:18:27,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:18:27,851 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 00:18:27,851 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 00:18:27,851 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 00:18:27,851 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 00:18:27,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 00:18:27,851 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 00:18:27,851 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 00:18:27,851 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 00:18:27,852 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 00:18:27,852 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 00:18:27,852 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 00:18:28,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 00:18:28,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 00:18:28,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 00:18:28,047 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 00:18:28,049 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 00:18:28,049 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array18_pattern.c [2023-12-16 00:18:29,065 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 00:18:29,201 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 00:18:29,202 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array18_pattern.c [2023-12-16 00:18:29,207 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b6664146/4df089aab2ec44948c9228820935b14c/FLAG74cf9343d [2023-12-16 00:18:29,621 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b6664146/4df089aab2ec44948c9228820935b14c [2023-12-16 00:18:29,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 00:18:29,625 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 00:18:29,625 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 00:18:29,626 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 00:18:29,634 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 00:18:29,634 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:18:29" (1/1) ... [2023-12-16 00:18:29,635 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f0a77cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:29, skipping insertion in model container [2023-12-16 00:18:29,635 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:18:29" (1/1) ... [2023-12-16 00:18:29,652 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 00:18:29,738 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array18_pattern.c[1444,1457] [2023-12-16 00:18:29,757 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:18:29,762 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 00:18:29,769 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array18_pattern.c[1444,1457] [2023-12-16 00:18:29,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:18:29,785 INFO L206 MainTranslator]: Completed translation [2023-12-16 00:18:29,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:29 WrapperNode [2023-12-16 00:18:29,785 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 00:18:29,786 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 00:18:29,787 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 00:18:29,787 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 00:18:29,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:29" (1/1) ... [2023-12-16 00:18:29,795 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:29" (1/1) ... [2023-12-16 00:18:29,809 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 104 [2023-12-16 00:18:29,809 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 00:18:29,810 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 00:18:29,810 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 00:18:29,810 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 00:18:29,818 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:29" (1/1) ... [2023-12-16 00:18:29,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:29" (1/1) ... [2023-12-16 00:18:29,819 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:29" (1/1) ... [2023-12-16 00:18:29,826 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2023-12-16 00:18:29,826 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:29" (1/1) ... [2023-12-16 00:18:29,827 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:29" (1/1) ... [2023-12-16 00:18:29,830 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:29" (1/1) ... [2023-12-16 00:18:29,832 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:29" (1/1) ... [2023-12-16 00:18:29,833 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:29" (1/1) ... [2023-12-16 00:18:29,833 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:29" (1/1) ... [2023-12-16 00:18:29,835 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 00:18:29,835 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 00:18:29,835 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 00:18:29,835 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 00:18:29,836 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:29" (1/1) ... [2023-12-16 00:18:29,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:18:29,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:18:29,862 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) [2023-12-16 00:18:29,888 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 [2023-12-16 00:18:29,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 00:18:29,897 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 00:18:29,898 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 00:18:29,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 00:18:29,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-16 00:18:29,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 00:18:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-16 00:18:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-16 00:18:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 00:18:29,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 00:18:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-16 00:18:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-16 00:18:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 00:18:29,971 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 00:18:29,972 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 00:18:30,102 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 00:18:30,123 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 00:18:30,124 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-12-16 00:18:30,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:18:30 BoogieIcfgContainer [2023-12-16 00:18:30,124 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 00:18:30,125 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 00:18:30,125 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 00:18:30,131 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 00:18:30,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:18:29" (1/3) ... [2023-12-16 00:18:30,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454430d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:18:30, skipping insertion in model container [2023-12-16 00:18:30,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:29" (2/3) ... [2023-12-16 00:18:30,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454430d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:18:30, skipping insertion in model container [2023-12-16 00:18:30,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:18:30" (3/3) ... [2023-12-16 00:18:30,134 INFO L112 eAbstractionObserver]: Analyzing ICFG array18_pattern.c [2023-12-16 00:18:30,146 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 00:18:30,146 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 00:18:30,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 00:18:30,177 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;@169b6389, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 00:18:30,178 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 00:18:30,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 23 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 00:18:30,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 00:18:30,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:18:30,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:18:30,186 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:18:30,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:18:30,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1876061686, now seen corresponding path program 1 times [2023-12-16 00:18:30,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:18:30,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005122939] [2023-12-16 00:18:30,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:18:30,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:18:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:18:30,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:18:30,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005122939] [2023-12-16 00:18:30,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 00:18:30,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909195517] [2023-12-16 00:18:30,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:18:30,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:18:30,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:18:30,306 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) [2023-12-16 00:18:30,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 00:18:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:18:30,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 00:18:30,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:18:30,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:18:30,411 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:18:30,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909195517] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:18:30,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:18:30,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 00:18:30,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81611118] [2023-12-16 00:18:30,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:18:30,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 00:18:30,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:18:30,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 00:18:30,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 00:18:30,436 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 23 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 00:18:30,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:18:30,460 INFO L93 Difference]: Finished difference Result 54 states and 88 transitions. [2023-12-16 00:18:30,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 00:18:30,462 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-12-16 00:18:30,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:18:30,466 INFO L225 Difference]: With dead ends: 54 [2023-12-16 00:18:30,466 INFO L226 Difference]: Without dead ends: 26 [2023-12-16 00:18:30,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 00:18:30,471 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:18:30,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:18:30,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-16 00:18:30,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-12-16 00:18:30,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 00:18:30,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2023-12-16 00:18:30,502 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 14 [2023-12-16 00:18:30,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:18:30,502 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2023-12-16 00:18:30,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 00:18:30,502 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2023-12-16 00:18:30,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-16 00:18:30,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:18:30,503 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:18:30,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 00:18:30,704 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 [2023-12-16 00:18:30,705 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:18:30,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:18:30,705 INFO L85 PathProgramCache]: Analyzing trace with hash -364244922, now seen corresponding path program 1 times [2023-12-16 00:18:30,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:18:30,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723423623] [2023-12-16 00:18:30,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:18:30,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:18:30,723 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:18:30,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567281917] [2023-12-16 00:18:30,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:18:30,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:18:30,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:18:30,726 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) [2023-12-16 00:18:30,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 00:18:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:18:30,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 00:18:30,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:18:30,850 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 00:18:30,850 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:18:30,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:18:30,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723423623] [2023-12-16 00:18:30,851 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:18:30,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567281917] [2023-12-16 00:18:30,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567281917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:18:30,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:18:30,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 00:18:30,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181525580] [2023-12-16 00:18:30,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:18:30,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 00:18:30,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:18:30,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 00:18:30,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:18:30,854 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 00:18:30,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:18:30,890 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2023-12-16 00:18:30,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 00:18:30,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2023-12-16 00:18:30,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:18:30,892 INFO L225 Difference]: With dead ends: 33 [2023-12-16 00:18:30,892 INFO L226 Difference]: Without dead ends: 29 [2023-12-16 00:18:30,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:18:30,893 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 11 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:18:30,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 72 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:18:30,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-16 00:18:30,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-12-16 00:18:30,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 00:18:30,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2023-12-16 00:18:30,898 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 29 [2023-12-16 00:18:30,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:18:30,899 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2023-12-16 00:18:30,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 00:18:30,899 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2023-12-16 00:18:30,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-16 00:18:30,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:18:30,900 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:18:30,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 00:18:31,101 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 [2023-12-16 00:18:31,101 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:18:31,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:18:31,102 INFO L85 PathProgramCache]: Analyzing trace with hash -315688640, now seen corresponding path program 1 times [2023-12-16 00:18:31,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:18:31,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874996812] [2023-12-16 00:18:31,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:18:31,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:18:31,117 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:18:31,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048758034] [2023-12-16 00:18:31,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:18:31,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:18:31,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:18:31,121 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) [2023-12-16 00:18:31,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 00:18:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:18:31,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 00:18:31,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:18:31,288 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-16 00:18:31,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:18:31,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:18:31,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874996812] [2023-12-16 00:18:31,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:18:31,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048758034] [2023-12-16 00:18:31,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048758034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:18:31,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:18:31,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 00:18:31,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909202647] [2023-12-16 00:18:31,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:18:31,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 00:18:31,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:18:31,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 00:18:31,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:18:31,295 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 00:18:31,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:18:31,380 INFO L93 Difference]: Finished difference Result 61 states and 80 transitions. [2023-12-16 00:18:31,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:18:31,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2023-12-16 00:18:31,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:18:31,381 INFO L225 Difference]: With dead ends: 61 [2023-12-16 00:18:31,381 INFO L226 Difference]: Without dead ends: 37 [2023-12-16 00:18:31,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:18:31,382 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 19 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:18:31,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 77 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:18:31,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-16 00:18:31,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2023-12-16 00:18:31,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 00:18:31,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2023-12-16 00:18:31,386 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 33 [2023-12-16 00:18:31,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:18:31,386 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2023-12-16 00:18:31,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 00:18:31,387 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2023-12-16 00:18:31,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-16 00:18:31,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:18:31,387 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:18:31,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 00:18:31,594 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 [2023-12-16 00:18:31,595 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:18:31,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:18:31,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1044441326, now seen corresponding path program 1 times [2023-12-16 00:18:31,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:18:31,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109819084] [2023-12-16 00:18:31,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:18:31,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:18:31,605 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:18:31,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028990538] [2023-12-16 00:18:31,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:18:31,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:18:31,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:18:31,606 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) [2023-12-16 00:18:31,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 00:18:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:18:31,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 00:18:31,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:18:31,675 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 00:18:31,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:18:31,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:18:31,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109819084] [2023-12-16 00:18:31,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:18:31,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028990538] [2023-12-16 00:18:31,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028990538] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:18:31,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:18:31,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 00:18:31,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896269740] [2023-12-16 00:18:31,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:18:31,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 00:18:31,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:18:31,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 00:18:31,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:18:31,677 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 00:18:31,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:18:31,708 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2023-12-16 00:18:31,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 00:18:31,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2023-12-16 00:18:31,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:18:31,709 INFO L225 Difference]: With dead ends: 57 [2023-12-16 00:18:31,709 INFO L226 Difference]: Without dead ends: 31 [2023-12-16 00:18:31,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:18:31,714 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 22 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:18:31,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 47 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:18:31,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-16 00:18:31,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2023-12-16 00:18:31,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 00:18:31,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2023-12-16 00:18:31,726 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 36 [2023-12-16 00:18:31,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:18:31,727 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2023-12-16 00:18:31,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 00:18:31,727 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2023-12-16 00:18:31,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-16 00:18:31,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:18:31,730 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:18:31,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 00:18:31,946 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 [2023-12-16 00:18:31,947 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:18:31,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:18:31,947 INFO L85 PathProgramCache]: Analyzing trace with hash -313799821, now seen corresponding path program 1 times [2023-12-16 00:18:31,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:18:31,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848478912] [2023-12-16 00:18:31,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:18:31,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:18:31,956 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:18:31,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1399561893] [2023-12-16 00:18:31,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:18:31,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:18:31,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:18:31,964 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) [2023-12-16 00:18:31,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 00:18:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:18:32,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-16 00:18:32,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:18:32,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 00:18:32,464 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 00:18:32,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:18:32,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 71 [2023-12-16 00:18:32,628 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 00:18:32,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 160 [2023-12-16 00:18:32,732 INFO L349 Elim1Store]: treesize reduction 143, result has 29.9 percent of original size [2023-12-16 00:18:32,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 158 treesize of output 112 [2023-12-16 00:18:32,841 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 00:18:32,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 162 treesize of output 155 [2023-12-16 00:18:37,409 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index2~0#1|)) 4294967296))) (let ((.cse2 (+ (* c_~ARR_SIZE~0 .cse1) |c_ULTIMATE.start_main_~index2~0#1|))) (and (let ((.cse0 (+ |c_ULTIMATE.start_main_~sum~0#1| (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)))) (or (= .cse0 1) (= .cse0 0))) (or (< .cse1 2147483648) (= .cse2 (* c_~ARR_SIZE~0 4294967296))) (or (< 2147483647 .cse1) (= .cse2 0))))) is different from false [2023-12-16 00:18:54,222 WARN L293 SmtUtils]: Spent 6.88s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-16 00:19:23,531 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 00:19:23,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:19:23,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848478912] [2023-12-16 00:19:23,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:19:23,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399561893] [2023-12-16 00:19:23,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399561893] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:19:23,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 00:19:23,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 37 [2023-12-16 00:19:23,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192067266] [2023-12-16 00:19:23,532 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 00:19:23,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-16 00:19:23,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:19:23,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-16 00:19:23,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1078, Unknown=1, NotChecked=68, Total=1332 [2023-12-16 00:19:23,534 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 37 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 34 states have internal predecessors, (58), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 00:19:31,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:19:31,398 INFO L93 Difference]: Finished difference Result 165 states and 217 transitions. [2023-12-16 00:19:31,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-16 00:19:31,398 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 34 states have internal predecessors, (58), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 37 [2023-12-16 00:19:31,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:19:31,400 INFO L225 Difference]: With dead ends: 165 [2023-12-16 00:19:31,400 INFO L226 Difference]: Without dead ends: 135 [2023-12-16 00:19:31,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 87 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2467 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=1420, Invalid=6239, Unknown=1, NotChecked=172, Total=7832 [2023-12-16 00:19:31,403 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 372 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-16 00:19:31,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 237 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 819 Invalid, 0 Unknown, 174 Unchecked, 1.8s Time] [2023-12-16 00:19:31,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-12-16 00:19:31,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 78. [2023-12-16 00:19:31,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 67 states have (on average 1.328358208955224) internal successors, (89), 67 states have internal predecessors, (89), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-16 00:19:31,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 103 transitions. [2023-12-16 00:19:31,425 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 103 transitions. Word has length 37 [2023-12-16 00:19:31,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:19:31,426 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 103 transitions. [2023-12-16 00:19:31,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 34 states have internal predecessors, (58), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 00:19:31,426 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 103 transitions. [2023-12-16 00:19:31,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-16 00:19:31,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:19:31,429 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:19:31,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 00:19:31,629 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 [2023-12-16 00:19:31,630 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:19:31,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:19:31,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1066751633, now seen corresponding path program 1 times [2023-12-16 00:19:31,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:19:31,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092920423] [2023-12-16 00:19:31,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:31,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:19:31,640 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:19:31,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [135743742] [2023-12-16 00:19:31,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:31,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:31,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:19:31,641 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) [2023-12-16 00:19:31,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 00:19:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:19:31,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 00:19:31,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:19:31,788 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:19:31,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:19:31,935 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-16 00:19:31,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:19:31,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092920423] [2023-12-16 00:19:31,935 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:19:31,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135743742] [2023-12-16 00:19:31,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135743742] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:19:31,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 00:19:31,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2023-12-16 00:19:31,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745701484] [2023-12-16 00:19:31,936 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 00:19:31,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 00:19:31,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:19:31,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 00:19:31,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-12-16 00:19:31,937 INFO L87 Difference]: Start difference. First operand 78 states and 103 transitions. Second operand has 18 states, 16 states have (on average 2.375) internal successors, (38), 13 states have internal predecessors, (38), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-16 00:19:32,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:19:32,220 INFO L93 Difference]: Finished difference Result 175 states and 223 transitions. [2023-12-16 00:19:32,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-16 00:19:32,221 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.375) internal successors, (38), 13 states have internal predecessors, (38), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 37 [2023-12-16 00:19:32,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:19:32,224 INFO L225 Difference]: With dead ends: 175 [2023-12-16 00:19:32,224 INFO L226 Difference]: Without dead ends: 120 [2023-12-16 00:19:32,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2023-12-16 00:19:32,226 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 124 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 00:19:32,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 188 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 00:19:32,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-12-16 00:19:32,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 70. [2023-12-16 00:19:32,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 60 states have internal predecessors, (73), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 00:19:32,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2023-12-16 00:19:32,264 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 37 [2023-12-16 00:19:32,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:19:32,264 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2023-12-16 00:19:32,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.375) internal successors, (38), 13 states have internal predecessors, (38), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-16 00:19:32,265 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2023-12-16 00:19:32,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-16 00:19:32,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:19:32,265 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:19:32,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 00:19:32,469 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 [2023-12-16 00:19:32,472 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:19:32,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:19:32,472 INFO L85 PathProgramCache]: Analyzing trace with hash -957259103, now seen corresponding path program 2 times [2023-12-16 00:19:32,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:19:32,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202563384] [2023-12-16 00:19:32,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:32,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:19:32,489 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:19:32,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [393186857] [2023-12-16 00:19:32,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 00:19:32,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:32,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:19:32,490 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) [2023-12-16 00:19:32,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 00:19:32,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 00:19:32,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 00:19:32,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 00:19:32,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:19:32,578 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 00:19:32,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:19:32,613 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 00:19:32,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:19:32,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202563384] [2023-12-16 00:19:32,615 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:19:32,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393186857] [2023-12-16 00:19:32,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393186857] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:19:32,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 00:19:32,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-12-16 00:19:32,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547060045] [2023-12-16 00:19:32,617 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 00:19:32,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 00:19:32,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:19:32,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 00:19:32,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:19:32,618 INFO L87 Difference]: Start difference. First operand 70 states and 85 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 00:19:32,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:19:32,747 INFO L93 Difference]: Finished difference Result 113 states and 141 transitions. [2023-12-16 00:19:32,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 00:19:32,747 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2023-12-16 00:19:32,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:19:32,748 INFO L225 Difference]: With dead ends: 113 [2023-12-16 00:19:32,748 INFO L226 Difference]: Without dead ends: 89 [2023-12-16 00:19:32,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-12-16 00:19:32,750 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 36 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:19:32,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 99 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:19:32,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-16 00:19:32,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 76. [2023-12-16 00:19:32,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 66 states have internal predecessors, (81), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 00:19:32,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2023-12-16 00:19:32,772 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 38 [2023-12-16 00:19:32,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:19:32,772 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2023-12-16 00:19:32,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 00:19:32,773 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2023-12-16 00:19:32,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-16 00:19:32,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:19:32,776 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:19:32,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 00:19:32,980 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 [2023-12-16 00:19:32,981 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:19:32,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:19:32,981 INFO L85 PathProgramCache]: Analyzing trace with hash -715827731, now seen corresponding path program 3 times [2023-12-16 00:19:32,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:19:32,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057923486] [2023-12-16 00:19:32,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:32,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:19:32,989 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:19:32,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321853855] [2023-12-16 00:19:32,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 00:19:32,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:32,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:19:33,005 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) [2023-12-16 00:19:33,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 00:19:33,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-16 00:19:33,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 00:19:33,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 00:19:33,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:19:33,093 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 00:19:33,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:19:33,118 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 00:19:33,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:19:33,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057923486] [2023-12-16 00:19:33,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:19:33,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321853855] [2023-12-16 00:19:33,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321853855] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:19:33,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 00:19:33,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-16 00:19:33,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345912243] [2023-12-16 00:19:33,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 00:19:33,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 00:19:33,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:19:33,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 00:19:33,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 00:19:33,120 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 00:19:33,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:19:33,195 INFO L93 Difference]: Finished difference Result 114 states and 137 transitions. [2023-12-16 00:19:33,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 00:19:33,195 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2023-12-16 00:19:33,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:19:33,196 INFO L225 Difference]: With dead ends: 114 [2023-12-16 00:19:33,196 INFO L226 Difference]: Without dead ends: 72 [2023-12-16 00:19:33,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:19:33,197 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 28 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:19:33,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 103 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:19:33,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-16 00:19:33,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2023-12-16 00:19:33,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 60 states have (on average 1.2) internal successors, (72), 61 states have internal predecessors, (72), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 00:19:33,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 84 transitions. [2023-12-16 00:19:33,211 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 84 transitions. Word has length 41 [2023-12-16 00:19:33,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:19:33,211 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 84 transitions. [2023-12-16 00:19:33,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 00:19:33,211 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 84 transitions. [2023-12-16 00:19:33,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-16 00:19:33,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:19:33,212 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:19:33,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 00:19:33,412 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 [2023-12-16 00:19:33,415 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:19:33,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:19:33,415 INFO L85 PathProgramCache]: Analyzing trace with hash -535222425, now seen corresponding path program 4 times [2023-12-16 00:19:33,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:19:33,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456885192] [2023-12-16 00:19:33,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:33,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:19:33,427 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:19:33,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [710619785] [2023-12-16 00:19:33,427 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 00:19:33,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:33,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:19:33,428 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) [2023-12-16 00:19:33,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 00:19:33,478 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 00:19:33,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 00:19:33,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 00:19:33,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:19:33,525 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 00:19:33,526 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:19:33,557 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 00:19:33,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:19:33,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456885192] [2023-12-16 00:19:33,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:19:33,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710619785] [2023-12-16 00:19:33,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710619785] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:19:33,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 00:19:33,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-12-16 00:19:33,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402288910] [2023-12-16 00:19:33,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 00:19:33,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 00:19:33,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:19:33,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 00:19:33,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-16 00:19:33,559 INFO L87 Difference]: Start difference. First operand 71 states and 84 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:19:33,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:19:33,657 INFO L93 Difference]: Finished difference Result 92 states and 108 transitions. [2023-12-16 00:19:33,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 00:19:33,658 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2023-12-16 00:19:33,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:19:33,658 INFO L225 Difference]: With dead ends: 92 [2023-12-16 00:19:33,658 INFO L226 Difference]: Without dead ends: 57 [2023-12-16 00:19:33,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-12-16 00:19:33,659 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 72 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:19:33,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 85 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:19:33,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-12-16 00:19:33,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2023-12-16 00:19:33,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 42 states have internal predecessors, (52), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 00:19:33,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2023-12-16 00:19:33,667 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 42 [2023-12-16 00:19:33,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:19:33,667 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2023-12-16 00:19:33,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:19:33,668 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2023-12-16 00:19:33,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-16 00:19:33,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:19:33,668 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:19:33,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-16 00:19:33,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:33,872 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:19:33,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:19:33,872 INFO L85 PathProgramCache]: Analyzing trace with hash -47121920, now seen corresponding path program 5 times [2023-12-16 00:19:33,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:19:33,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37753684] [2023-12-16 00:19:33,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:33,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:19:33,878 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:19:33,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [427463457] [2023-12-16 00:19:33,879 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 00:19:33,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:33,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:19:33,880 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:19:33,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 00:19:33,927 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-16 00:19:33,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 00:19:33,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 00:19:33,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:19:33,971 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 00:19:33,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:19:34,006 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-16 00:19:34,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:19:34,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37753684] [2023-12-16 00:19:34,007 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:19:34,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427463457] [2023-12-16 00:19:34,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427463457] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:19:34,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 00:19:34,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-12-16 00:19:34,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428255589] [2023-12-16 00:19:34,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 00:19:34,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 00:19:34,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:19:34,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 00:19:34,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-16 00:19:34,008 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:19:34,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:19:34,110 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2023-12-16 00:19:34,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 00:19:34,111 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2023-12-16 00:19:34,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:19:34,111 INFO L225 Difference]: With dead ends: 57 [2023-12-16 00:19:34,111 INFO L226 Difference]: Without dead ends: 48 [2023-12-16 00:19:34,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2023-12-16 00:19:34,112 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 54 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:19:34,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 66 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:19:34,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-16 00:19:34,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-12-16 00:19:34,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 42 states have internal predecessors, (51), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 00:19:34,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2023-12-16 00:19:34,131 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 43 [2023-12-16 00:19:34,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:19:34,131 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2023-12-16 00:19:34,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:19:34,132 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2023-12-16 00:19:34,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-16 00:19:34,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:19:34,132 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:19:34,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 00:19:34,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-16 00:19:34,333 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:19:34,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:19:34,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1854788154, now seen corresponding path program 6 times [2023-12-16 00:19:34,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:19:34,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681399165] [2023-12-16 00:19:34,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:34,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:19:34,339 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:19:34,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [260900935] [2023-12-16 00:19:34,340 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 00:19:34,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:34,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:19:34,340 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:19:34,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 00:19:34,719 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-16 00:19:34,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 00:19:34,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 85 conjunts are in the unsatisfiable core [2023-12-16 00:19:34,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:19:34,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-12-16 00:19:34,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-12-16 00:19:34,882 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 00:19:34,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-12-16 00:19:34,921 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 00:19:34,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 Received shutdown request... [2023-12-16 00:19:47,529 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 [2023-12-16 00:19:47,529 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:19:48,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 00:19:48,729 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 [2023-12-16 00:19:48,736 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 [2023-12-16 00:19:48,738 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 00:19:48,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 00:19:48,738 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 50 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while executing Executor. [2023-12-16 00:19:48,742 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1] [2023-12-16 00:19:48,748 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 00:19:48,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:19:48 BoogieIcfgContainer [2023-12-16 00:19:48,750 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 00:19:48,750 INFO L158 Benchmark]: Toolchain (without parser) took 79125.29ms. Allocated memory was 283.1MB in the beginning and 339.7MB in the end (delta: 56.6MB). Free memory was 230.6MB in the beginning and 162.4MB in the end (delta: 68.2MB). Peak memory consumption was 125.8MB. Max. memory is 8.0GB. [2023-12-16 00:19:48,750 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory is still 139.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 00:19:48,750 INFO L158 Benchmark]: CACSL2BoogieTranslator took 160.43ms. Allocated memory is still 283.1MB. Free memory was 230.6MB in the beginning and 219.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 00:19:48,751 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.85ms. Allocated memory is still 283.1MB. Free memory was 218.6MB in the beginning and 217.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 00:19:48,751 INFO L158 Benchmark]: Boogie Preprocessor took 24.93ms. Allocated memory is still 283.1MB. Free memory was 217.0MB in the beginning and 214.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 00:19:48,751 INFO L158 Benchmark]: RCFGBuilder took 288.72ms. Allocated memory is still 283.1MB. Free memory was 214.9MB in the beginning and 200.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 00:19:48,751 INFO L158 Benchmark]: TraceAbstraction took 78624.34ms. Allocated memory was 283.1MB in the beginning and 339.7MB in the end (delta: 56.6MB). Free memory was 199.7MB in the beginning and 162.4MB in the end (delta: 37.3MB). Peak memory consumption was 94.4MB. Max. memory is 8.0GB. [2023-12-16 00:19:48,754 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory is still 139.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 160.43ms. Allocated memory is still 283.1MB. Free memory was 230.6MB in the beginning and 219.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.85ms. Allocated memory is still 283.1MB. Free memory was 218.6MB in the beginning and 217.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.93ms. Allocated memory is still 283.1MB. Free memory was 217.0MB in the beginning and 214.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 288.72ms. Allocated memory is still 283.1MB. Free memory was 214.9MB in the beginning and 200.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 78624.34ms. Allocated memory was 283.1MB in the beginning and 339.7MB in the end (delta: 56.6MB). Free memory was 199.7MB in the beginning and 162.4MB in the end (delta: 37.3MB). Peak memory consumption was 94.4MB. 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: 35]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 35). Cancelled while NwaCegarLoop was analyzing trace of length 50 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 78.6s, OverallIterations: 11, TraceHistogramMax: 4, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 746 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 738 mSDsluCounter, 1006 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 174 IncrementalHoareTripleChecker+Unchecked, 763 mSDsCounter, 178 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1725 IncrementalHoareTripleChecker+Invalid, 2077 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 178 mSolverCounterUnsat, 243 mSDtfsCounter, 1725 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 675 GetRequests, 482 SyntacticMatches, 15 SemanticMatches, 178 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2773 ImplicationChecksByTransitivity, 28.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=5, InterpolantAutomatonStates: 144, 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, 10 MinimizatonAttempts, 138 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 52.2s InterpolantComputationTime, 364 NumberOfCodeBlocks, 343 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 572 ConstructedInterpolants, 5 QuantifiedInterpolants, 3002 SizeOfPredicates, 49 NumberOfNonLiveVariables, 1148 ConjunctsInSsa, 101 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 255/311 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