/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/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-45.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 21:00:44,816 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 21:00:44,900 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 21:00:44,905 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 21:00:44,906 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 21:00:44,932 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 21:00:44,933 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 21:00:44,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 21:00:44,934 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 21:00:44,938 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 21:00:44,938 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 21:00:44,939 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 21:00:44,939 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 21:00:44,940 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 21:00:44,941 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 21:00:44,941 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 21:00:44,941 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 21:00:44,941 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 21:00:44,942 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 21:00:44,943 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 21:00:44,943 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 21:00:44,944 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 21:00:44,944 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 21:00:44,944 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 21:00:44,944 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 21:00:44,944 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 21:00:44,945 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 21:00:44,945 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 21:00:44,945 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 21:00:44,946 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 21:00:44,947 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 21:00:44,947 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 21:00:44,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 21:00:44,947 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 21:00:44,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 21:00:44,948 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 21:00:44,948 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 21:00:44,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 21:00:44,948 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 21:00:44,949 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 21:00:44,949 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 21:00:44,949 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 21:00:44,949 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 21:00:44,949 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 21:00:45,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 21:00:45,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 21:00:45,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 21:00:45,187 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 21:00:45,188 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 21:00:45,188 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-45.i [2023-12-20 21:00:46,274 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 21:00:46,493 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 21:00:46,494 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-45.i [2023-12-20 21:00:46,506 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7f9310aa/f284243f14c74caa8d233b257faf8f71/FLAG38d9b821b [2023-12-20 21:00:46,518 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7f9310aa/f284243f14c74caa8d233b257faf8f71 [2023-12-20 21:00:46,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 21:00:46,521 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 21:00:46,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 21:00:46,524 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 21:00:46,531 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 21:00:46,532 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 09:00:46" (1/1) ... [2023-12-20 21:00:46,533 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f0613d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:00:46, skipping insertion in model container [2023-12-20 21:00:46,533 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 09:00:46" (1/1) ... [2023-12-20 21:00:46,575 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 21:00:46,704 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-45.i[919,932] [2023-12-20 21:00:46,762 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 21:00:46,773 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 21:00:46,783 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-45.i[919,932] [2023-12-20 21:00:46,816 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 21:00:46,830 INFO L206 MainTranslator]: Completed translation [2023-12-20 21:00:46,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:00:46 WrapperNode [2023-12-20 21:00:46,831 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 21:00:46,832 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 21:00:46,832 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 21:00:46,832 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 21:00:46,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:00:46" (1/1) ... [2023-12-20 21:00:46,847 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:00:46" (1/1) ... [2023-12-20 21:00:46,881 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 192 [2023-12-20 21:00:46,881 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 21:00:46,882 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 21:00:46,882 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 21:00:46,882 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 21:00:46,891 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:00:46" (1/1) ... [2023-12-20 21:00:46,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:00:46" (1/1) ... [2023-12-20 21:00:46,894 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:00:46" (1/1) ... [2023-12-20 21:00:46,909 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 21:00:46,909 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:00:46" (1/1) ... [2023-12-20 21:00:46,909 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:00:46" (1/1) ... [2023-12-20 21:00:46,917 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:00:46" (1/1) ... [2023-12-20 21:00:46,920 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:00:46" (1/1) ... [2023-12-20 21:00:46,922 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:00:46" (1/1) ... [2023-12-20 21:00:46,924 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:00:46" (1/1) ... [2023-12-20 21:00:46,927 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 21:00:46,928 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 21:00:46,928 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 21:00:46,928 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 21:00:46,929 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:00:46" (1/1) ... [2023-12-20 21:00:46,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 21:00:46,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 21:00:46,967 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) [2023-12-20 21:00:46,990 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 [2023-12-20 21:00:46,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 21:00:47,000 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 21:00:47,001 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 21:00:47,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 21:00:47,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 21:00:47,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 21:00:47,108 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 21:00:47,109 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 21:00:47,451 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 21:00:47,493 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 21:00:47,493 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 21:00:47,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 09:00:47 BoogieIcfgContainer [2023-12-20 21:00:47,493 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 21:00:47,495 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 21:00:47,495 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 21:00:47,498 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 21:00:47,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 09:00:46" (1/3) ... [2023-12-20 21:00:47,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7324e006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 09:00:47, skipping insertion in model container [2023-12-20 21:00:47,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:00:46" (2/3) ... [2023-12-20 21:00:47,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7324e006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 09:00:47, skipping insertion in model container [2023-12-20 21:00:47,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 09:00:47" (3/3) ... [2023-12-20 21:00:47,500 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-45.i [2023-12-20 21:00:47,522 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 21:00:47,522 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 21:00:47,559 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 21:00:47,564 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;@41cf2ba4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 21:00:47,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 21:00:47,568 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 49 states have (on average 1.489795918367347) internal successors, (73), 50 states have internal predecessors, (73), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-20 21:00:47,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-20 21:00:47,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 21:00:47,589 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 21:00:47,590 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 21:00:47,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 21:00:47,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1358017924, now seen corresponding path program 1 times [2023-12-20 21:00:47,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 21:00:47,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906227414] [2023-12-20 21:00:47,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 21:00:47,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 21:00:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 21:00:47,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 21:00:47,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906227414] [2023-12-20 21:00:47,855 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 21:00:47,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043105433] [2023-12-20 21:00:47,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 21:00:47,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 21:00:47,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 21:00:47,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 21:00:47,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 21:00:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 21:00:48,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 21:00:48,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 21:00:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2023-12-20 21:00:48,089 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 21:00:48,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043105433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 21:00:48,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 21:00:48,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 21:00:48,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365258656] [2023-12-20 21:00:48,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 21:00:48,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 21:00:48,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 21:00:48,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 21:00:48,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 21:00:48,131 INFO L87 Difference]: Start difference. First operand has 78 states, 49 states have (on average 1.489795918367347) internal successors, (73), 50 states have internal predecessors, (73), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-20 21:00:48,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 21:00:48,188 INFO L93 Difference]: Finished difference Result 153 states and 274 transitions. [2023-12-20 21:00:48,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 21:00:48,191 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 168 [2023-12-20 21:00:48,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 21:00:48,199 INFO L225 Difference]: With dead ends: 153 [2023-12-20 21:00:48,200 INFO L226 Difference]: Without dead ends: 76 [2023-12-20 21:00:48,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 21:00:48,207 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 21:00:48,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 21:00:48,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-20 21:00:48,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-12-20 21:00:48,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 48 states have (on average 1.4166666666666667) internal successors, (68), 48 states have internal predecessors, (68), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-20 21:00:48,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 120 transitions. [2023-12-20 21:00:48,252 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 120 transitions. Word has length 168 [2023-12-20 21:00:48,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 21:00:48,252 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 120 transitions. [2023-12-20 21:00:48,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-20 21:00:48,252 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 120 transitions. [2023-12-20 21:00:48,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-20 21:00:48,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 21:00:48,256 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 21:00:48,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 21:00:48,467 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 [2023-12-20 21:00:48,467 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 21:00:48,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 21:00:48,468 INFO L85 PathProgramCache]: Analyzing trace with hash -723337352, now seen corresponding path program 1 times [2023-12-20 21:00:48,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 21:00:48,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058222123] [2023-12-20 21:00:48,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 21:00:48,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 21:00:48,565 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 21:00:48,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13144733] [2023-12-20 21:00:48,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 21:00:48,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 21:00:48,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 21:00:48,570 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) [2023-12-20 21:00:48,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 21:00:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 21:00:48,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 21:00:48,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 21:00:48,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-12-20 21:00:48,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 21:00:48,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 21:00:48,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058222123] [2023-12-20 21:00:48,794 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 21:00:48,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13144733] [2023-12-20 21:00:48,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13144733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 21:00:48,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 21:00:48,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 21:00:48,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405325227] [2023-12-20 21:00:48,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 21:00:48,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 21:00:48,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 21:00:48,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 21:00:48,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 21:00:48,799 INFO L87 Difference]: Start difference. First operand 76 states and 120 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-12-20 21:00:48,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 21:00:48,876 INFO L93 Difference]: Finished difference Result 222 states and 350 transitions. [2023-12-20 21:00:48,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 21:00:48,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 168 [2023-12-20 21:00:48,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 21:00:48,884 INFO L225 Difference]: With dead ends: 222 [2023-12-20 21:00:48,885 INFO L226 Difference]: Without dead ends: 147 [2023-12-20 21:00:48,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 21:00:48,891 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 100 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 21:00:48,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 301 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 21:00:48,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-20 21:00:48,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2023-12-20 21:00:48,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 90 states have (on average 1.3555555555555556) internal successors, (122), 90 states have internal predecessors, (122), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-20 21:00:48,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 226 transitions. [2023-12-20 21:00:48,919 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 226 transitions. Word has length 168 [2023-12-20 21:00:48,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 21:00:48,920 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 226 transitions. [2023-12-20 21:00:48,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-12-20 21:00:48,920 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 226 transitions. [2023-12-20 21:00:48,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-20 21:00:48,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 21:00:48,923 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 21:00:48,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 21:00:49,129 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 [2023-12-20 21:00:49,129 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 21:00:49,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 21:00:49,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1270807354, now seen corresponding path program 1 times [2023-12-20 21:00:49,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 21:00:49,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713613227] [2023-12-20 21:00:49,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 21:00:49,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 21:00:49,198 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 21:00:49,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2134548374] [2023-12-20 21:00:49,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 21:00:49,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 21:00:49,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 21:00:49,206 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) [2023-12-20 21:00:49,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 21:00:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 21:00:49,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 21:00:49,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 21:00:49,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-12-20 21:00:49,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 21:00:49,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 21:00:49,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713613227] [2023-12-20 21:00:49,411 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 21:00:49,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134548374] [2023-12-20 21:00:49,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134548374] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 21:00:49,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 21:00:49,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 21:00:49,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904201508] [2023-12-20 21:00:49,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 21:00:49,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 21:00:49,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 21:00:49,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 21:00:49,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 21:00:49,414 INFO L87 Difference]: Start difference. First operand 145 states and 226 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-12-20 21:00:49,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 21:00:49,471 INFO L93 Difference]: Finished difference Result 299 states and 466 transitions. [2023-12-20 21:00:49,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 21:00:49,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 168 [2023-12-20 21:00:49,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 21:00:49,476 INFO L225 Difference]: With dead ends: 299 [2023-12-20 21:00:49,477 INFO L226 Difference]: Without dead ends: 155 [2023-12-20 21:00:49,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 21:00:49,479 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 106 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 21:00:49,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 213 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 21:00:49,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-12-20 21:00:49,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2023-12-20 21:00:49,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 98 states have (on average 1.346938775510204) internal successors, (132), 98 states have internal predecessors, (132), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-20 21:00:49,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 236 transitions. [2023-12-20 21:00:49,513 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 236 transitions. Word has length 168 [2023-12-20 21:00:49,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 21:00:49,515 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 236 transitions. [2023-12-20 21:00:49,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-12-20 21:00:49,515 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 236 transitions. [2023-12-20 21:00:49,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-20 21:00:49,521 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 21:00:49,521 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 21:00:49,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 21:00:49,727 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 [2023-12-20 21:00:49,727 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 21:00:49,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 21:00:49,728 INFO L85 PathProgramCache]: Analyzing trace with hash -2106333188, now seen corresponding path program 1 times [2023-12-20 21:00:49,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 21:00:49,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268401324] [2023-12-20 21:00:49,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 21:00:49,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 21:00:49,768 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 21:00:49,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851238995] [2023-12-20 21:00:49,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 21:00:49,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 21:00:49,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 21:00:49,770 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) [2023-12-20 21:00:49,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 21:00:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 21:00:49,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 21:00:49,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 21:00:50,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 669 proven. 33 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2023-12-20 21:00:50,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 21:00:50,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 42 proven. 33 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-12-20 21:00:50,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 21:00:50,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268401324] [2023-12-20 21:00:50,209 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 21:00:50,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851238995] [2023-12-20 21:00:50,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851238995] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 21:00:50,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 21:00:50,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-20 21:00:50,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568304334] [2023-12-20 21:00:50,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 21:00:50,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 21:00:50,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 21:00:50,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 21:00:50,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 21:00:50,212 INFO L87 Difference]: Start difference. First operand 153 states and 236 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-12-20 21:00:50,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 21:00:50,383 INFO L93 Difference]: Finished difference Result 317 states and 481 transitions. [2023-12-20 21:00:50,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 21:00:50,384 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 170 [2023-12-20 21:00:50,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 21:00:50,386 INFO L225 Difference]: With dead ends: 317 [2023-12-20 21:00:50,386 INFO L226 Difference]: Without dead ends: 165 [2023-12-20 21:00:50,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 332 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-20 21:00:50,390 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 108 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 21:00:50,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 197 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 21:00:50,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-20 21:00:50,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2023-12-20 21:00:50,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 104 states have (on average 1.2980769230769231) internal successors, (135), 104 states have internal predecessors, (135), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-20 21:00:50,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 239 transitions. [2023-12-20 21:00:50,447 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 239 transitions. Word has length 170 [2023-12-20 21:00:50,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 21:00:50,449 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 239 transitions. [2023-12-20 21:00:50,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-12-20 21:00:50,449 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 239 transitions. [2023-12-20 21:00:50,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-20 21:00:50,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 21:00:50,452 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 21:00:50,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 21:00:50,657 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 [2023-12-20 21:00:50,658 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 21:00:50,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 21:00:50,658 INFO L85 PathProgramCache]: Analyzing trace with hash -826469510, now seen corresponding path program 1 times [2023-12-20 21:00:50,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 21:00:50,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139373719] [2023-12-20 21:00:50,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 21:00:50,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 21:00:50,699 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 21:00:50,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1997396403] [2023-12-20 21:00:50,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 21:00:50,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 21:00:50,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 21:00:50,701 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) [2023-12-20 21:00:50,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 21:00:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 21:00:50,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 21:00:50,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 21:00:52,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-12-20 21:00:52,349 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 21:00:52,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 21:00:52,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139373719] [2023-12-20 21:00:52,349 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 21:00:52,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997396403] [2023-12-20 21:00:52,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997396403] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 21:00:52,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 21:00:52,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 21:00:52,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433264388] [2023-12-20 21:00:52,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 21:00:52,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 21:00:52,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 21:00:52,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 21:00:52,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 21:00:52,356 INFO L87 Difference]: Start difference. First operand 161 states and 239 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-12-20 21:00:52,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 21:00:52,795 INFO L93 Difference]: Finished difference Result 411 states and 609 transitions. [2023-12-20 21:00:52,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 21:00:52,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 170 [2023-12-20 21:00:52,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 21:00:52,799 INFO L225 Difference]: With dead ends: 411 [2023-12-20 21:00:52,799 INFO L226 Difference]: Without dead ends: 251 [2023-12-20 21:00:52,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 21:00:52,801 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 198 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 21:00:52,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 199 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 21:00:52,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-12-20 21:00:52,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 247. [2023-12-20 21:00:52,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 172 states have (on average 1.3372093023255813) internal successors, (230), 174 states have internal predecessors, (230), 68 states have call successors, (68), 6 states have call predecessors, (68), 6 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-20 21:00:52,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 366 transitions. [2023-12-20 21:00:52,841 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 366 transitions. Word has length 170 [2023-12-20 21:00:52,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 21:00:52,841 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 366 transitions. [2023-12-20 21:00:52,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-12-20 21:00:52,842 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 366 transitions. [2023-12-20 21:00:52,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-20 21:00:52,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 21:00:52,843 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 21:00:52,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 21:00:53,049 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 [2023-12-20 21:00:53,049 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 21:00:53,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 21:00:53,050 INFO L85 PathProgramCache]: Analyzing trace with hash 351742060, now seen corresponding path program 1 times [2023-12-20 21:00:53,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 21:00:53,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190891606] [2023-12-20 21:00:53,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 21:00:53,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 21:00:53,085 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 21:00:53,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1474966571] [2023-12-20 21:00:53,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 21:00:53,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 21:00:53,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 21:00:53,087 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) [2023-12-20 21:00:53,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 21:00:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 21:00:53,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-20 21:00:53,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 21:00:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-12-20 21:00:53,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 21:00:53,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 21:00:53,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190891606] [2023-12-20 21:00:53,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 21:00:53,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474966571] [2023-12-20 21:00:53,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474966571] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 21:00:53,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 21:00:53,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 21:00:53,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316360646] [2023-12-20 21:00:53,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 21:00:53,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 21:00:53,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 21:00:53,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 21:00:53,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 21:00:53,398 INFO L87 Difference]: Start difference. First operand 247 states and 366 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-12-20 21:00:53,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 21:00:53,426 INFO L93 Difference]: Finished difference Result 381 states and 565 transitions. [2023-12-20 21:00:53,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 21:00:53,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 170 [2023-12-20 21:00:53,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 21:00:53,429 INFO L225 Difference]: With dead ends: 381 [2023-12-20 21:00:53,429 INFO L226 Difference]: Without dead ends: 135 [2023-12-20 21:00:53,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 21:00:53,431 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 41 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 21:00:53,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 114 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 21:00:53,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-12-20 21:00:53,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 119. [2023-12-20 21:00:53,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 81 states have (on average 1.308641975308642) internal successors, (106), 82 states have internal predecessors, (106), 34 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-20 21:00:53,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 174 transitions. [2023-12-20 21:00:53,448 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 174 transitions. Word has length 170 [2023-12-20 21:00:53,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 21:00:53,448 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 174 transitions. [2023-12-20 21:00:53,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-12-20 21:00:53,448 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 174 transitions. [2023-12-20 21:00:53,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-20 21:00:53,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 21:00:53,450 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 21:00:53,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 21:00:53,656 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 [2023-12-20 21:00:53,656 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 21:00:53,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 21:00:53,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1344718247, now seen corresponding path program 1 times [2023-12-20 21:00:53,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 21:00:53,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813377691] [2023-12-20 21:00:53,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 21:00:53,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 21:00:53,677 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 21:00:53,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [176162148] [2023-12-20 21:00:53,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 21:00:53,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 21:00:53,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 21:00:53,678 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) [2023-12-20 21:00:53,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 21:00:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 21:00:53,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-20 21:00:53,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-20 21:08:33,921 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 21:08:33,933 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 [2023-12-20 21:08:34,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-20 21:08:35,052 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 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown