/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-24.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 12:44:44,935 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 12:44:45,012 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 12:44:45,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 12:44:45,017 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 12:44:45,038 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 12:44:45,038 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 12:44:45,038 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 12:44:45,039 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 12:44:45,052 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 12:44:45,052 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 12:44:45,052 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 12:44:45,053 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 12:44:45,053 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 12:44:45,054 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 12:44:45,054 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 12:44:45,054 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 12:44:45,054 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 12:44:45,055 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 12:44:45,055 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 12:44:45,055 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 12:44:45,055 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 12:44:45,055 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 12:44:45,055 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 12:44:45,056 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 12:44:45,056 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 12:44:45,056 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 12:44:45,056 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 12:44:45,056 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 12:44:45,056 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 12:44:45,057 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 12:44:45,057 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 12:44:45,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 12:44:45,057 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 12:44:45,057 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 12:44:45,057 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 12:44:45,057 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 12:44:45,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 12:44:45,058 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 12:44:45,058 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 12:44:45,058 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 12:44:45,059 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 12:44:45,059 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 12:44:45,059 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 12:44:45,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 12:44:45,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 12:44:45,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 12:44:45,234 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 12:44:45,234 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 12:44:45,235 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-24.i [2023-12-19 12:44:46,172 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 12:44:46,359 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 12:44:46,359 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-24.i [2023-12-19 12:44:46,368 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a38127de3/b8be89feb7bc4207b1fc27c006a7c414/FLAG8081f5db8 [2023-12-19 12:44:46,377 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a38127de3/b8be89feb7bc4207b1fc27c006a7c414 [2023-12-19 12:44:46,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 12:44:46,379 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 12:44:46,381 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 12:44:46,381 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 12:44:46,384 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 12:44:46,384 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:44:46" (1/1) ... [2023-12-19 12:44:46,385 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33064c4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:44:46, skipping insertion in model container [2023-12-19 12:44:46,385 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:44:46" (1/1) ... [2023-12-19 12:44:46,435 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 12:44:46,531 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-24.i[916,929] [2023-12-19 12:44:46,628 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 12:44:46,638 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 12:44:46,645 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-24.i[916,929] [2023-12-19 12:44:46,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 12:44:46,709 INFO L206 MainTranslator]: Completed translation [2023-12-19 12:44:46,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:44:46 WrapperNode [2023-12-19 12:44:46,709 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 12:44:46,710 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 12:44:46,710 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 12:44:46,710 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 12:44:46,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:44:46" (1/1) ... [2023-12-19 12:44:46,727 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:44:46" (1/1) ... [2023-12-19 12:44:46,777 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 428 [2023-12-19 12:44:46,777 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 12:44:46,778 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 12:44:46,778 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 12:44:46,778 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 12:44:46,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:44:46" (1/1) ... [2023-12-19 12:44:46,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:44:46" (1/1) ... [2023-12-19 12:44:46,795 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:44:46" (1/1) ... [2023-12-19 12:44:46,821 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 12:44:46,821 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:44:46" (1/1) ... [2023-12-19 12:44:46,822 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:44:46" (1/1) ... [2023-12-19 12:44:46,846 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:44:46" (1/1) ... [2023-12-19 12:44:46,849 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:44:46" (1/1) ... [2023-12-19 12:44:46,853 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:44:46" (1/1) ... [2023-12-19 12:44:46,855 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:44:46" (1/1) ... [2023-12-19 12:44:46,868 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 12:44:46,869 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 12:44:46,869 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 12:44:46,869 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 12:44:46,870 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:44:46" (1/1) ... [2023-12-19 12:44:46,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 12:44:46,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:44:46,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 12:44:46,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 12:44:46,912 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 12:44:46,912 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 12:44:46,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 12:44:46,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 12:44:46,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 12:44:46,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 12:44:47,013 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 12:44:47,016 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 12:44:47,576 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 12:44:47,605 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 12:44:47,605 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 12:44:47,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:44:47 BoogieIcfgContainer [2023-12-19 12:44:47,605 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 12:44:47,607 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 12:44:47,607 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 12:44:47,609 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 12:44:47,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 12:44:46" (1/3) ... [2023-12-19 12:44:47,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abfaee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:44:47, skipping insertion in model container [2023-12-19 12:44:47,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:44:46" (2/3) ... [2023-12-19 12:44:47,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abfaee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:44:47, skipping insertion in model container [2023-12-19 12:44:47,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:44:47" (3/3) ... [2023-12-19 12:44:47,611 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-24.i [2023-12-19 12:44:47,622 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 12:44:47,623 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 12:44:47,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 12:44:47,659 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;@b03754f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 12:44:47,659 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 12:44:47,663 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 123 states have (on average 1.5691056910569106) internal successors, (193), 124 states have internal predecessors, (193), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-19 12:44:47,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-19 12:44:47,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:44:47,678 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:44:47,679 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:44:47,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:44:47,682 INFO L85 PathProgramCache]: Analyzing trace with hash 240022870, now seen corresponding path program 1 times [2023-12-19 12:44:47,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:44:47,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024164891] [2023-12-19 12:44:47,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:44:47,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:44:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:44:47,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:44:47,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024164891] [2023-12-19 12:44:47,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 12:44:47,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321609944] [2023-12-19 12:44:47,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:44:47,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:44:47,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:44:47,877 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:44:47,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 12:44:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:44:48,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 12:44:48,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:44:48,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2023-12-19 12:44:48,164 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:44:48,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321609944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:44:48,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:44:48,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 12:44:48,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425242000] [2023-12-19 12:44:48,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:44:48,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 12:44:48,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:44:48,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 12:44:48,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 12:44:48,192 INFO L87 Difference]: Start difference. First operand has 170 states, 123 states have (on average 1.5691056910569106) internal successors, (193), 124 states have internal predecessors, (193), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2023-12-19 12:44:48,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:44:48,226 INFO L93 Difference]: Finished difference Result 337 states and 604 transitions. [2023-12-19 12:44:48,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 12:44:48,228 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) Word has length 294 [2023-12-19 12:44:48,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:44:48,234 INFO L225 Difference]: With dead ends: 337 [2023-12-19 12:44:48,234 INFO L226 Difference]: Without dead ends: 168 [2023-12-19 12:44:48,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 12:44:48,239 INFO L413 NwaCegarLoop]: 273 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, 273 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 12:44:48,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 273 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 12:44:48,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-12-19 12:44:48,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2023-12-19 12:44:48,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 122 states have (on average 1.540983606557377) internal successors, (188), 122 states have internal predecessors, (188), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-19 12:44:48,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 276 transitions. [2023-12-19 12:44:48,301 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 276 transitions. Word has length 294 [2023-12-19 12:44:48,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:44:48,301 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 276 transitions. [2023-12-19 12:44:48,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2023-12-19 12:44:48,302 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 276 transitions. [2023-12-19 12:44:48,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-19 12:44:48,321 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:44:48,321 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:44:48,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 12:44:48,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 12:44:48,529 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:44:48,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:44:48,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1030919578, now seen corresponding path program 1 times [2023-12-19 12:44:48,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:44:48,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932902233] [2023-12-19 12:44:48,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:44:48,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:44:48,617 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:44:48,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380265283] [2023-12-19 12:44:48,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:44:48,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:44:48,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:44:48,623 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:44:48,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 12:44:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:44:48,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 12:44:48,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:44:49,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-12-19 12:44:49,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:44:49,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:44:49,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932902233] [2023-12-19 12:44:49,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:44:49,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380265283] [2023-12-19 12:44:49,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380265283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:44:49,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:44:49,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 12:44:49,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247852151] [2023-12-19 12:44:49,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:44:49,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 12:44:49,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:44:49,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 12:44:49,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 12:44:49,134 INFO L87 Difference]: Start difference. First operand 168 states and 276 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-19 12:44:49,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:44:49,315 INFO L93 Difference]: Finished difference Result 503 states and 827 transitions. [2023-12-19 12:44:49,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 12:44:49,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 294 [2023-12-19 12:44:49,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:44:49,323 INFO L225 Difference]: With dead ends: 503 [2023-12-19 12:44:49,323 INFO L226 Difference]: Without dead ends: 336 [2023-12-19 12:44:49,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 12:44:49,330 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 205 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 12:44:49,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 797 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 12:44:49,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-12-19 12:44:49,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 251. [2023-12-19 12:44:49,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 160 states have (on average 1.44375) internal successors, (231), 160 states have internal predecessors, (231), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-19 12:44:49,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 407 transitions. [2023-12-19 12:44:49,370 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 407 transitions. Word has length 294 [2023-12-19 12:44:49,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:44:49,371 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 407 transitions. [2023-12-19 12:44:49,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-19 12:44:49,371 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 407 transitions. [2023-12-19 12:44:49,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-19 12:44:49,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:44:49,374 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:44:49,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 12:44:49,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 12:44:49,580 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:44:49,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:44:49,581 INFO L85 PathProgramCache]: Analyzing trace with hash 168809570, now seen corresponding path program 1 times [2023-12-19 12:44:49,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:44:49,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352049102] [2023-12-19 12:44:49,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:44:49,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:44:49,644 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:44:49,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [292497539] [2023-12-19 12:44:49,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:44:49,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:44:49,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:44:49,666 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:44:49,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 12:44:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:44:49,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 12:44:49,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:44:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-12-19 12:44:50,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:44:50,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:44:50,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352049102] [2023-12-19 12:44:50,084 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:44:50,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292497539] [2023-12-19 12:44:50,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292497539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:44:50,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:44:50,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 12:44:50,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830387666] [2023-12-19 12:44:50,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:44:50,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 12:44:50,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:44:50,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 12:44:50,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 12:44:50,087 INFO L87 Difference]: Start difference. First operand 251 states and 407 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-19 12:44:50,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:44:50,143 INFO L93 Difference]: Finished difference Result 586 states and 958 transitions. [2023-12-19 12:44:50,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 12:44:50,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 295 [2023-12-19 12:44:50,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:44:50,148 INFO L225 Difference]: With dead ends: 586 [2023-12-19 12:44:50,148 INFO L226 Difference]: Without dead ends: 419 [2023-12-19 12:44:50,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 12:44:50,150 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 138 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 12:44:50,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 524 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 12:44:50,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-12-19 12:44:50,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 415. [2023-12-19 12:44:50,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 279 states have (on average 1.4802867383512546) internal successors, (413), 279 states have internal predecessors, (413), 132 states have call successors, (132), 3 states have call predecessors, (132), 3 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2023-12-19 12:44:50,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 677 transitions. [2023-12-19 12:44:50,184 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 677 transitions. Word has length 295 [2023-12-19 12:44:50,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:44:50,185 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 677 transitions. [2023-12-19 12:44:50,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-19 12:44:50,185 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 677 transitions. [2023-12-19 12:44:50,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-19 12:44:50,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:44:50,187 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:44:50,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 12:44:50,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:44:50,393 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:44:50,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:44:50,393 INFO L85 PathProgramCache]: Analyzing trace with hash 443569184, now seen corresponding path program 1 times [2023-12-19 12:44:50,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:44:50,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706104691] [2023-12-19 12:44:50,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:44:50,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:44:50,424 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:44:50,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1794077288] [2023-12-19 12:44:50,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:44:50,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:44:50,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:44:50,426 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:44:50,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 12:44:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:44:50,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 12:44:50,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:44:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-12-19 12:44:50,822 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:44:50,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:44:50,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706104691] [2023-12-19 12:44:50,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:44:50,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794077288] [2023-12-19 12:44:50,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794077288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:44:50,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:44:50,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 12:44:50,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707599332] [2023-12-19 12:44:50,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:44:50,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 12:44:50,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:44:50,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 12:44:50,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 12:44:50,826 INFO L87 Difference]: Start difference. First operand 415 states and 677 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-19 12:44:50,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:44:50,888 INFO L93 Difference]: Finished difference Result 1075 states and 1765 transitions. [2023-12-19 12:44:50,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 12:44:50,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 295 [2023-12-19 12:44:50,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:44:50,892 INFO L225 Difference]: With dead ends: 1075 [2023-12-19 12:44:50,892 INFO L226 Difference]: Without dead ends: 745 [2023-12-19 12:44:50,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 12:44:50,893 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 125 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 12:44:50,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 527 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 12:44:50,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2023-12-19 12:44:50,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 743. [2023-12-19 12:44:50,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 517 states have (on average 1.504835589941973) internal successors, (778), 517 states have internal predecessors, (778), 220 states have call successors, (220), 5 states have call predecessors, (220), 5 states have return successors, (220), 220 states have call predecessors, (220), 220 states have call successors, (220) [2023-12-19 12:44:50,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1218 transitions. [2023-12-19 12:44:50,932 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1218 transitions. Word has length 295 [2023-12-19 12:44:50,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:44:50,933 INFO L495 AbstractCegarLoop]: Abstraction has 743 states and 1218 transitions. [2023-12-19 12:44:50,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-19 12:44:50,933 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1218 transitions. [2023-12-19 12:44:50,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-19 12:44:50,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:44:50,936 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:44:50,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 12:44:51,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:44:51,145 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:44:51,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:44:51,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1857253406, now seen corresponding path program 1 times [2023-12-19 12:44:51,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:44:51,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330408141] [2023-12-19 12:44:51,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:44:51,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:44:51,171 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:44:51,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211199467] [2023-12-19 12:44:51,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:44:51,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:44:51,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:44:51,173 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:44:51,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 12:44:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:44:51,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 12:44:51,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:44:51,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-12-19 12:44:51,379 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:44:51,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:44:51,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330408141] [2023-12-19 12:44:51,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:44:51,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211199467] [2023-12-19 12:44:51,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211199467] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:44:51,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:44:51,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 12:44:51,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129216810] [2023-12-19 12:44:51,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:44:51,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 12:44:51,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:44:51,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 12:44:51,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 12:44:51,381 INFO L87 Difference]: Start difference. First operand 743 states and 1218 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-19 12:44:51,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:44:51,481 INFO L93 Difference]: Finished difference Result 1999 states and 3272 transitions. [2023-12-19 12:44:51,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 12:44:51,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 295 [2023-12-19 12:44:51,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:44:51,487 INFO L225 Difference]: With dead ends: 1999 [2023-12-19 12:44:51,487 INFO L226 Difference]: Without dead ends: 1341 [2023-12-19 12:44:51,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 12:44:51,489 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 242 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 12:44:51,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 650 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 12:44:51,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2023-12-19 12:44:51,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 949. [2023-12-19 12:44:51,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 723 states have (on average 1.5103734439834025) internal successors, (1092), 723 states have internal predecessors, (1092), 220 states have call successors, (220), 5 states have call predecessors, (220), 5 states have return successors, (220), 220 states have call predecessors, (220), 220 states have call successors, (220) [2023-12-19 12:44:51,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1532 transitions. [2023-12-19 12:44:51,539 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1532 transitions. Word has length 295 [2023-12-19 12:44:51,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:44:51,539 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1532 transitions. [2023-12-19 12:44:51,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-19 12:44:51,539 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1532 transitions. [2023-12-19 12:44:51,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-19 12:44:51,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:44:51,542 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:44:51,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 12:44:51,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:44:51,748 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:44:51,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:44:51,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1915182550, now seen corresponding path program 1 times [2023-12-19 12:44:51,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:44:51,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105672062] [2023-12-19 12:44:51,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:44:51,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:44:51,793 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:44:51,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925557797] [2023-12-19 12:44:51,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:44:51,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:44:51,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:44:51,795 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:44:51,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 12:44:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:44:51,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 12:44:51,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:44:52,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-12-19 12:44:52,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:44:52,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:44:52,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105672062] [2023-12-19 12:44:52,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:44:52,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925557797] [2023-12-19 12:44:52,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925557797] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:44:52,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:44:52,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 12:44:52,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640265957] [2023-12-19 12:44:52,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:44:52,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 12:44:52,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:44:52,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 12:44:52,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 12:44:52,003 INFO L87 Difference]: Start difference. First operand 949 states and 1532 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-19 12:44:52,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:44:52,109 INFO L93 Difference]: Finished difference Result 2203 states and 3544 transitions. [2023-12-19 12:44:52,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 12:44:52,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 295 [2023-12-19 12:44:52,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:44:52,115 INFO L225 Difference]: With dead ends: 2203 [2023-12-19 12:44:52,115 INFO L226 Difference]: Without dead ends: 1339 [2023-12-19 12:44:52,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 12:44:52,119 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 239 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 12:44:52,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 480 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 12:44:52,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2023-12-19 12:44:52,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 949. [2023-12-19 12:44:52,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 723 states have (on average 1.4550484094052558) internal successors, (1052), 723 states have internal predecessors, (1052), 220 states have call successors, (220), 5 states have call predecessors, (220), 5 states have return successors, (220), 220 states have call predecessors, (220), 220 states have call successors, (220) [2023-12-19 12:44:52,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1492 transitions. [2023-12-19 12:44:52,168 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1492 transitions. Word has length 295 [2023-12-19 12:44:52,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:44:52,168 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1492 transitions. [2023-12-19 12:44:52,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-19 12:44:52,168 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1492 transitions. [2023-12-19 12:44:52,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-12-19 12:44:52,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:44:52,170 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:44:52,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 12:44:52,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:44:52,380 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:44:52,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:44:52,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1160572703, now seen corresponding path program 1 times [2023-12-19 12:44:52,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:44:52,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369521870] [2023-12-19 12:44:52,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:44:52,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:44:52,406 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:44:52,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914769610] [2023-12-19 12:44:52,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:44:52,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:44:52,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:44:52,407 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:44:52,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 12:44:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:44:52,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 12:44:52,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:44:53,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1629 proven. 90 refuted. 0 times theorem prover too weak. 2065 trivial. 0 not checked. [2023-12-19 12:44:53,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:44:53,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 39 proven. 90 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2023-12-19 12:44:53,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:44:53,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369521870] [2023-12-19 12:44:53,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:44:53,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914769610] [2023-12-19 12:44:53,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914769610] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:44:53,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:44:53,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-19 12:44:53,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436384661] [2023-12-19 12:44:53,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:44:53,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 12:44:53,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:44:53,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 12:44:53,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 12:44:53,256 INFO L87 Difference]: Start difference. First operand 949 states and 1492 transitions. Second operand has 12 states, 12 states have (on average 10.75) internal successors, (129), 12 states have internal predecessors, (129), 4 states have call successors, (88), 3 states have call predecessors, (88), 5 states have return successors, (88), 4 states have call predecessors, (88), 4 states have call successors, (88) [2023-12-19 12:44:53,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:44:53,954 INFO L93 Difference]: Finished difference Result 2685 states and 4200 transitions. [2023-12-19 12:44:53,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 12:44:53,955 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.75) internal successors, (129), 12 states have internal predecessors, (129), 4 states have call successors, (88), 3 states have call predecessors, (88), 5 states have return successors, (88), 4 states have call predecessors, (88), 4 states have call successors, (88) Word has length 296 [2023-12-19 12:44:53,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:44:53,961 INFO L225 Difference]: With dead ends: 2685 [2023-12-19 12:44:53,961 INFO L226 Difference]: Without dead ends: 1821 [2023-12-19 12:44:53,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2023-12-19 12:44:53,963 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1101 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 12:44:53,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 1270 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 12:44:53,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2023-12-19 12:44:54,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 965. [2023-12-19 12:44:54,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 738 states have (on average 1.456639566395664) internal successors, (1075), 738 states have internal predecessors, (1075), 220 states have call successors, (220), 6 states have call predecessors, (220), 6 states have return successors, (220), 220 states have call predecessors, (220), 220 states have call successors, (220) [2023-12-19 12:44:54,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1515 transitions. [2023-12-19 12:44:54,053 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1515 transitions. Word has length 296 [2023-12-19 12:44:54,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:44:54,054 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 1515 transitions. [2023-12-19 12:44:54,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.75) internal successors, (129), 12 states have internal predecessors, (129), 4 states have call successors, (88), 3 states have call predecessors, (88), 5 states have return successors, (88), 4 states have call predecessors, (88), 4 states have call successors, (88) [2023-12-19 12:44:54,054 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1515 transitions. [2023-12-19 12:44:54,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-12-19 12:44:54,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:44:54,056 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:44:54,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 12:44:54,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:44:54,264 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:44:54,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:44:54,265 INFO L85 PathProgramCache]: Analyzing trace with hash -684794463, now seen corresponding path program 1 times [2023-12-19 12:44:54,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:44:54,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950234806] [2023-12-19 12:44:54,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:44:54,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:44:54,288 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:44:54,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [865916589] [2023-12-19 12:44:54,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:44:54,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:44:54,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:44:54,290 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:44:54,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 12:44:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:44:54,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-19 12:44:54,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:44:57,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2642 proven. 351 refuted. 0 times theorem prover too weak. 791 trivial. 0 not checked. [2023-12-19 12:44:57,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:45:12,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 234 proven. 381 refuted. 0 times theorem prover too weak. 3169 trivial. 0 not checked. [2023-12-19 12:45:12,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:45:12,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950234806] [2023-12-19 12:45:12,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:45:12,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865916589] [2023-12-19 12:45:12,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865916589] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:45:12,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:45:12,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 43 [2023-12-19 12:45:12,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719761222] [2023-12-19 12:45:12,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:45:12,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-19 12:45:12,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:45:12,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-19 12:45:12,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=1348, Unknown=0, NotChecked=0, Total=1806 [2023-12-19 12:45:12,421 INFO L87 Difference]: Start difference. First operand 965 states and 1515 transitions. Second operand has 43 states, 40 states have (on average 4.2) internal successors, (168), 39 states have internal predecessors, (168), 14 states have call successors, (88), 8 states have call predecessors, (88), 15 states have return successors, (88), 12 states have call predecessors, (88), 14 states have call successors, (88) [2023-12-19 12:45:30,546 WARN L293 SmtUtils]: Spent 8.92s on a formula simplification that was a NOOP. DAG size: 140 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 12:45:38,530 WARN L293 SmtUtils]: Spent 7.74s on a formula simplification. DAG size of input: 128 DAG size of output: 126 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 12:45:54,669 WARN L293 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 126 DAG size of output: 124 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 12:45:59,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 12:46:10,173 WARN L293 SmtUtils]: Spent 8.60s on a formula simplification. DAG size of input: 169 DAG size of output: 153 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 12:46:25,296 WARN L293 SmtUtils]: Spent 7.75s on a formula simplification. DAG size of input: 163 DAG size of output: 153 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 12:47:05,079 WARN L293 SmtUtils]: Spent 5.92s on a formula simplification. DAG size of input: 156 DAG size of output: 151 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 12:47:11,004 WARN L293 SmtUtils]: Spent 5.70s on a formula simplification that was a NOOP. DAG size: 137 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 12:47:19,282 WARN L293 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 151 DAG size of output: 149 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 12:47:25,672 WARN L293 SmtUtils]: Spent 5.39s on a formula simplification that was a NOOP. DAG size: 148 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 12:47:37,729 WARN L293 SmtUtils]: Spent 7.42s on a formula simplification. DAG size of input: 126 DAG size of output: 124 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 12:47:56,154 WARN L293 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 121 DAG size of output: 119 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 12:48:27,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 12:48:34,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 12:48:44,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 12:48:53,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:48:53,789 INFO L93 Difference]: Finished difference Result 7445 states and 11459 transitions. [2023-12-19 12:48:53,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-19 12:48:53,790 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 40 states have (on average 4.2) internal successors, (168), 39 states have internal predecessors, (168), 14 states have call successors, (88), 8 states have call predecessors, (88), 15 states have return successors, (88), 12 states have call predecessors, (88), 14 states have call successors, (88) Word has length 296 [2023-12-19 12:48:53,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:48:53,809 INFO L225 Difference]: With dead ends: 7445 [2023-12-19 12:48:53,809 INFO L226 Difference]: Without dead ends: 6577 [2023-12-19 12:48:53,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 565 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6925 ImplicationChecksByTransitivity, 171.3s TimeCoverageRelationStatistics Valid=4844, Invalid=11926, Unknown=0, NotChecked=0, Total=16770 [2023-12-19 12:48:53,815 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 11438 mSDsluCounter, 2368 mSDsCounter, 0 mSdLazyCounter, 3645 mSolverCounterSat, 2119 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11451 SdHoareTripleChecker+Valid, 2528 SdHoareTripleChecker+Invalid, 5767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2119 IncrementalHoareTripleChecker+Valid, 3645 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.0s IncrementalHoareTripleChecker+Time [2023-12-19 12:48:53,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11451 Valid, 2528 Invalid, 5767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2119 Valid, 3645 Invalid, 3 Unknown, 0 Unchecked, 53.0s Time] [2023-12-19 12:48:53,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6577 states. [2023-12-19 12:48:54,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6577 to 2913. [2023-12-19 12:48:54,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2913 states, 2295 states have (on average 1.4230936819172113) internal successors, (3266), 2295 states have internal predecessors, (3266), 572 states have call successors, (572), 45 states have call predecessors, (572), 45 states have return successors, (572), 572 states have call predecessors, (572), 572 states have call successors, (572) [2023-12-19 12:48:54,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2913 states to 2913 states and 4410 transitions. [2023-12-19 12:48:54,515 INFO L78 Accepts]: Start accepts. Automaton has 2913 states and 4410 transitions. Word has length 296 [2023-12-19 12:48:54,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:48:54,516 INFO L495 AbstractCegarLoop]: Abstraction has 2913 states and 4410 transitions. [2023-12-19 12:48:54,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 40 states have (on average 4.2) internal successors, (168), 39 states have internal predecessors, (168), 14 states have call successors, (88), 8 states have call predecessors, (88), 15 states have return successors, (88), 12 states have call predecessors, (88), 14 states have call successors, (88) [2023-12-19 12:48:54,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2913 states and 4410 transitions. [2023-12-19 12:48:54,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-12-19 12:48:54,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:48:54,520 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:48:54,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 12:48:54,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 12:48:54,727 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:48:54,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:48:54,728 INFO L85 PathProgramCache]: Analyzing trace with hash -741364404, now seen corresponding path program 1 times [2023-12-19 12:48:54,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:48:54,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656512544] [2023-12-19 12:48:54,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:48:54,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:48:54,757 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:48:54,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1008332586] [2023-12-19 12:48:54,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:48:54,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:48:54,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:48:54,759 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:48:54,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 12:48:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:48:54,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 12:48:54,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:48:54,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-12-19 12:48:54,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:48:54,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:48:54,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656512544] [2023-12-19 12:48:54,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:48:54,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008332586] [2023-12-19 12:48:54,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008332586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:48:54,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:48:54,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 12:48:54,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508395854] [2023-12-19 12:48:54,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:48:55,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 12:48:55,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:48:55,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 12:48:55,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 12:48:55,001 INFO L87 Difference]: Start difference. First operand 2913 states and 4410 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-19 12:48:55,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:48:55,928 INFO L93 Difference]: Finished difference Result 6879 states and 10449 transitions. [2023-12-19 12:48:55,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 12:48:55,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 296 [2023-12-19 12:48:55,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:48:55,941 INFO L225 Difference]: With dead ends: 6879 [2023-12-19 12:48:55,941 INFO L226 Difference]: Without dead ends: 4445 [2023-12-19 12:48:55,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 12:48:55,945 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 244 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 12:48:55,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 863 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 12:48:55,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4445 states. [2023-12-19 12:48:56,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4445 to 3975. [2023-12-19 12:48:56,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3975 states, 3284 states have (on average 1.429658952496955) internal successors, (4695), 3296 states have internal predecessors, (4695), 632 states have call successors, (632), 58 states have call predecessors, (632), 58 states have return successors, (632), 620 states have call predecessors, (632), 632 states have call successors, (632) [2023-12-19 12:48:56,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3975 states to 3975 states and 5959 transitions. [2023-12-19 12:48:56,696 INFO L78 Accepts]: Start accepts. Automaton has 3975 states and 5959 transitions. Word has length 296 [2023-12-19 12:48:56,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:48:56,696 INFO L495 AbstractCegarLoop]: Abstraction has 3975 states and 5959 transitions. [2023-12-19 12:48:56,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-19 12:48:56,697 INFO L276 IsEmpty]: Start isEmpty. Operand 3975 states and 5959 transitions. [2023-12-19 12:48:56,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-12-19 12:48:56,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:48:56,701 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:48:56,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 12:48:56,906 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 [2023-12-19 12:48:56,907 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:48:56,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:48:56,908 INFO L85 PathProgramCache]: Analyzing trace with hash -116193276, now seen corresponding path program 1 times [2023-12-19 12:48:56,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:48:56,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610611742] [2023-12-19 12:48:56,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:48:56,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:48:56,931 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:48:56,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572396534] [2023-12-19 12:48:56,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:48:56,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:48:56,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:48:56,933 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) [2023-12-19 12:48:56,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 12:48:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:48:57,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 12:48:57,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:48:57,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-12-19 12:48:57,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:48:57,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:48:57,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610611742] [2023-12-19 12:48:57,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:48:57,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572396534] [2023-12-19 12:48:57,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572396534] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:48:57,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:48:57,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 12:48:57,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317254900] [2023-12-19 12:48:57,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:48:57,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 12:48:57,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:48:57,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 12:48:57,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 12:48:57,180 INFO L87 Difference]: Start difference. First operand 3975 states and 5959 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-19 12:48:57,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:48:57,877 INFO L93 Difference]: Finished difference Result 7009 states and 10524 transitions. [2023-12-19 12:48:57,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 12:48:57,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 296 [2023-12-19 12:48:57,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:48:57,889 INFO L225 Difference]: With dead ends: 7009 [2023-12-19 12:48:57,889 INFO L226 Difference]: Without dead ends: 3975 [2023-12-19 12:48:57,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 12:48:57,894 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 60 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 12:48:57,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 468 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 12:48:57,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2023-12-19 12:48:58,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 3975. [2023-12-19 12:48:58,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3975 states, 3284 states have (on average 1.4260048721071863) internal successors, (4683), 3296 states have internal predecessors, (4683), 632 states have call successors, (632), 58 states have call predecessors, (632), 58 states have return successors, (632), 620 states have call predecessors, (632), 632 states have call successors, (632) [2023-12-19 12:48:58,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3975 states to 3975 states and 5947 transitions. [2023-12-19 12:48:58,636 INFO L78 Accepts]: Start accepts. Automaton has 3975 states and 5947 transitions. Word has length 296 [2023-12-19 12:48:58,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:48:58,636 INFO L495 AbstractCegarLoop]: Abstraction has 3975 states and 5947 transitions. [2023-12-19 12:48:58,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-19 12:48:58,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3975 states and 5947 transitions. [2023-12-19 12:48:58,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-12-19 12:48:58,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:48:58,641 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:48:58,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-19 12:48:58,847 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 [2023-12-19 12:48:58,847 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:48:58,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:48:58,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1912102476, now seen corresponding path program 1 times [2023-12-19 12:48:58,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:48:58,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685795426] [2023-12-19 12:48:58,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:48:58,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:48:58,881 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:48:58,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355174306] [2023-12-19 12:48:58,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:48:58,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:48:58,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:48:58,884 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) [2023-12-19 12:48:58,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 12:48:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:48:59,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-19 12:48:59,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:49:00,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1695 proven. 252 refuted. 0 times theorem prover too weak. 1837 trivial. 0 not checked. [2023-12-19 12:49:00,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:49:01,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 117 proven. 261 refuted. 0 times theorem prover too weak. 3406 trivial. 0 not checked. [2023-12-19 12:49:01,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:49:01,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685795426] [2023-12-19 12:49:01,537 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:49:01,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355174306] [2023-12-19 12:49:01,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355174306] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:49:01,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:49:01,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 30 [2023-12-19 12:49:01,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587728801] [2023-12-19 12:49:01,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:49:01,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-19 12:49:01,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:49:01,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-19 12:49:01,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=666, Unknown=0, NotChecked=0, Total=870 [2023-12-19 12:49:01,540 INFO L87 Difference]: Start difference. First operand 3975 states and 5947 transitions. Second operand has 30 states, 28 states have (on average 6.142857142857143) internal successors, (172), 26 states have internal predecessors, (172), 8 states have call successors, (88), 5 states have call predecessors, (88), 9 states have return successors, (88), 8 states have call predecessors, (88), 8 states have call successors, (88) [2023-12-19 12:49:06,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:49:06,916 INFO L93 Difference]: Finished difference Result 13467 states and 19708 transitions. [2023-12-19 12:49:06,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-19 12:49:06,916 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 6.142857142857143) internal successors, (172), 26 states have internal predecessors, (172), 8 states have call successors, (88), 5 states have call predecessors, (88), 9 states have return successors, (88), 8 states have call predecessors, (88), 8 states have call successors, (88) Word has length 297 [2023-12-19 12:49:06,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:49:06,947 INFO L225 Difference]: With dead ends: 13467 [2023-12-19 12:49:06,947 INFO L226 Difference]: Without dead ends: 10399 [2023-12-19 12:49:06,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1257 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1067, Invalid=2839, Unknown=0, NotChecked=0, Total=3906 [2023-12-19 12:49:06,954 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 1677 mSDsluCounter, 2060 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1691 SdHoareTripleChecker+Valid, 2258 SdHoareTripleChecker+Invalid, 2283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 12:49:06,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1691 Valid, 2258 Invalid, 2283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 12:49:06,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10399 states. [2023-12-19 12:49:09,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10399 to 8783. [2023-12-19 12:49:09,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8783 states, 7185 states have (on average 1.3870563674321503) internal successors, (9966), 7233 states have internal predecessors, (9966), 1428 states have call successors, (1428), 169 states have call predecessors, (1428), 169 states have return successors, (1428), 1380 states have call predecessors, (1428), 1428 states have call successors, (1428) [2023-12-19 12:49:09,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8783 states to 8783 states and 12822 transitions. [2023-12-19 12:49:09,063 INFO L78 Accepts]: Start accepts. Automaton has 8783 states and 12822 transitions. Word has length 297 [2023-12-19 12:49:09,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:49:09,063 INFO L495 AbstractCegarLoop]: Abstraction has 8783 states and 12822 transitions. [2023-12-19 12:49:09,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 6.142857142857143) internal successors, (172), 26 states have internal predecessors, (172), 8 states have call successors, (88), 5 states have call predecessors, (88), 9 states have return successors, (88), 8 states have call predecessors, (88), 8 states have call successors, (88) [2023-12-19 12:49:09,063 INFO L276 IsEmpty]: Start isEmpty. Operand 8783 states and 12822 transitions. [2023-12-19 12:49:09,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-12-19 12:49:09,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:49:09,070 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:49:09,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-19 12:49:09,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 12:49:09,282 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:49:09,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:49:09,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1989837810, now seen corresponding path program 1 times [2023-12-19 12:49:09,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:49:09,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522049244] [2023-12-19 12:49:09,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:49:09,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:49:09,306 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:49:09,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1132701817] [2023-12-19 12:49:09,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:49:09,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:49:09,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:49:09,307 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:49:09,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 12:49:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:49:09,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 12:49:09,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:49:10,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2477 proven. 174 refuted. 0 times theorem prover too weak. 1133 trivial. 0 not checked. [2023-12-19 12:49:10,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:49:12,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 78 proven. 177 refuted. 0 times theorem prover too weak. 3529 trivial. 0 not checked. [2023-12-19 12:49:12,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:49:12,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522049244] [2023-12-19 12:49:12,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:49:12,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132701817] [2023-12-19 12:49:12,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132701817] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:49:12,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:49:12,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 22 [2023-12-19 12:49:12,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208730568] [2023-12-19 12:49:12,784 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:49:12,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-19 12:49:12,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:49:12,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-19 12:49:12,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2023-12-19 12:49:12,786 INFO L87 Difference]: Start difference. First operand 8783 states and 12822 transitions. Second operand has 22 states, 21 states have (on average 7.761904761904762) internal successors, (163), 20 states have internal predecessors, (163), 8 states have call successors, (88), 5 states have call predecessors, (88), 8 states have return successors, (88), 8 states have call predecessors, (88), 8 states have call successors, (88) [2023-12-19 12:49:18,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:49:18,284 INFO L93 Difference]: Finished difference Result 21515 states and 31505 transitions. [2023-12-19 12:49:18,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-19 12:49:18,285 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 7.761904761904762) internal successors, (163), 20 states have internal predecessors, (163), 8 states have call successors, (88), 5 states have call predecessors, (88), 8 states have return successors, (88), 8 states have call predecessors, (88), 8 states have call successors, (88) Word has length 297 [2023-12-19 12:49:18,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:49:18,310 INFO L225 Difference]: With dead ends: 21515 [2023-12-19 12:49:18,310 INFO L226 Difference]: Without dead ends: 14438 [2023-12-19 12:49:18,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=520, Invalid=1120, Unknown=0, NotChecked=0, Total=1640 [2023-12-19 12:49:18,320 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 1263 mSDsluCounter, 2215 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 1727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 12:49:18,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1290 Valid, 2417 Invalid, 1727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 12:49:18,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14438 states. [2023-12-19 12:49:20,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14438 to 8883. [2023-12-19 12:49:20,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8883 states, 7260 states have (on average 1.3772727272727272) internal successors, (9999), 7308 states have internal predecessors, (9999), 1428 states have call successors, (1428), 194 states have call predecessors, (1428), 194 states have return successors, (1428), 1380 states have call predecessors, (1428), 1428 states have call successors, (1428) [2023-12-19 12:49:20,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8883 states to 8883 states and 12855 transitions. [2023-12-19 12:49:20,687 INFO L78 Accepts]: Start accepts. Automaton has 8883 states and 12855 transitions. Word has length 297 [2023-12-19 12:49:20,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:49:20,688 INFO L495 AbstractCegarLoop]: Abstraction has 8883 states and 12855 transitions. [2023-12-19 12:49:20,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 7.761904761904762) internal successors, (163), 20 states have internal predecessors, (163), 8 states have call successors, (88), 5 states have call predecessors, (88), 8 states have return successors, (88), 8 states have call predecessors, (88), 8 states have call successors, (88) [2023-12-19 12:49:20,689 INFO L276 IsEmpty]: Start isEmpty. Operand 8883 states and 12855 transitions. [2023-12-19 12:49:20,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-12-19 12:49:20,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:49:20,695 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:49:20,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-19 12:49:20,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 12:49:20,902 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:49:20,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:49:20,903 INFO L85 PathProgramCache]: Analyzing trace with hash 2130386420, now seen corresponding path program 1 times [2023-12-19 12:49:20,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:49:20,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717301780] [2023-12-19 12:49:20,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:49:20,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:49:20,924 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:49:20,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875552290] [2023-12-19 12:49:20,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:49:20,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:49:20,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:49:20,926 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:49:20,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 12:49:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:49:21,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-19 12:49:21,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:49:25,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2180 proven. 507 refuted. 0 times theorem prover too weak. 1097 trivial. 0 not checked. [2023-12-19 12:49:25,921 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:49:30,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:49:30,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717301780] [2023-12-19 12:49:30,757 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:49:30,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875552290] [2023-12-19 12:49:30,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875552290] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 12:49:30,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 12:49:30,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2023-12-19 12:49:30,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838638280] [2023-12-19 12:49:30,757 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 12:49:30,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-19 12:49:30,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:49:30,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-19 12:49:30,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=1994, Unknown=0, NotChecked=0, Total=2352 [2023-12-19 12:49:30,759 INFO L87 Difference]: Start difference. First operand 8883 states and 12855 transitions. Second operand has 37 states, 37 states have (on average 3.135135135135135) internal successors, (116), 32 states have internal predecessors, (116), 10 states have call successors, (44), 10 states have call predecessors, (44), 13 states have return successors, (44), 10 states have call predecessors, (44), 10 states have call successors, (44) [2023-12-19 12:49:37,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:49:37,911 INFO L93 Difference]: Finished difference Result 19741 states and 28581 transitions. [2023-12-19 12:49:37,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-19 12:49:37,912 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.135135135135135) internal successors, (116), 32 states have internal predecessors, (116), 10 states have call successors, (44), 10 states have call predecessors, (44), 13 states have return successors, (44), 10 states have call predecessors, (44), 10 states have call successors, (44) Word has length 297 [2023-12-19 12:49:37,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:49:37,932 INFO L225 Difference]: With dead ends: 19741 [2023-12-19 12:49:37,932 INFO L226 Difference]: Without dead ends: 11853 [2023-12-19 12:49:37,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2040 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1415, Invalid=6775, Unknown=0, NotChecked=0, Total=8190 [2023-12-19 12:49:37,946 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 2281 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 2689 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2281 SdHoareTripleChecker+Valid, 2157 SdHoareTripleChecker+Invalid, 2979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 2689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 12:49:37,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2281 Valid, 2157 Invalid, 2979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 2689 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 12:49:37,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11853 states. [2023-12-19 12:49:40,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11853 to 8459. [2023-12-19 12:49:40,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8459 states, 6902 states have (on average 1.3739495798319328) internal successors, (9483), 6942 states have internal predecessors, (9483), 1364 states have call successors, (1364), 192 states have call predecessors, (1364), 192 states have return successors, (1364), 1324 states have call predecessors, (1364), 1364 states have call successors, (1364) [2023-12-19 12:49:40,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8459 states to 8459 states and 12211 transitions. [2023-12-19 12:49:40,070 INFO L78 Accepts]: Start accepts. Automaton has 8459 states and 12211 transitions. Word has length 297 [2023-12-19 12:49:40,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:49:40,071 INFO L495 AbstractCegarLoop]: Abstraction has 8459 states and 12211 transitions. [2023-12-19 12:49:40,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.135135135135135) internal successors, (116), 32 states have internal predecessors, (116), 10 states have call successors, (44), 10 states have call predecessors, (44), 13 states have return successors, (44), 10 states have call predecessors, (44), 10 states have call successors, (44) [2023-12-19 12:49:40,071 INFO L276 IsEmpty]: Start isEmpty. Operand 8459 states and 12211 transitions. [2023-12-19 12:49:40,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-12-19 12:49:40,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:49:40,077 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:49:40,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 12:49:40,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 12:49:40,285 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:49:40,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:49:40,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1502345076, now seen corresponding path program 1 times [2023-12-19 12:49:40,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:49:40,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851185100] [2023-12-19 12:49:40,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:49:40,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:49:40,310 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:49:40,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759428120] [2023-12-19 12:49:40,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:49:40,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:49:40,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:49:40,312 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:49:40,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 12:49:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:49:40,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-19 12:49:40,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:49:41,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2056 proven. 174 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2023-12-19 12:49:41,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:50:17,484 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (mod (+ c_~var_1_21~0 c_~var_1_52~0) 256))) (and (or (forall ((v_z_140 Int)) (or (< (mod (div 10 v_z_140) 4294967296) 1) (< v_z_140 1))) (< .cse0 128)) (forall ((v_z_140 Int)) (let ((.cse1 (+ .cse0 1))) (or (< (mod (div 10 v_z_140) 4294967296) .cse1) (< v_z_140 .cse1)))))) is different from false [2023-12-19 12:50:18,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:50:18,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851185100] [2023-12-19 12:50:18,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:50:18,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759428120] [2023-12-19 12:50:18,113 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-12-19 12:50:18,116 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 139 [2023-12-19 12:50:18,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 12:50:18,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:50:18,314 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:845) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:579) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 45 more [2023-12-19 12:50:18,317 INFO L158 Benchmark]: Toolchain (without parser) took 331938.11ms. Allocated memory was 215.0MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 172.6MB in the beginning and 653.4MB in the end (delta: -480.8MB). Peak memory consumption was 800.4MB. Max. memory is 8.0GB. [2023-12-19 12:50:18,318 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 215.0MB. Free memory is still 161.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 12:50:18,318 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.40ms. Allocated memory is still 215.0MB. Free memory was 172.2MB in the beginning and 148.0MB in the end (delta: 24.2MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-19 12:50:18,318 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.26ms. Allocated memory is still 215.0MB. Free memory was 148.0MB in the beginning and 141.5MB in the end (delta: 6.5MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-19 12:50:18,318 INFO L158 Benchmark]: Boogie Preprocessor took 90.47ms. Allocated memory is still 215.0MB. Free memory was 141.5MB in the beginning and 132.3MB in the end (delta: 9.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-19 12:50:18,318 INFO L158 Benchmark]: RCFGBuilder took 736.53ms. Allocated memory was 215.0MB in the beginning and 284.2MB in the end (delta: 69.2MB). Free memory was 132.1MB in the beginning and 214.0MB in the end (delta: -81.9MB). Peak memory consumption was 20.8MB. Max. memory is 8.0GB. [2023-12-19 12:50:18,318 INFO L158 Benchmark]: TraceAbstraction took 330709.75ms. Allocated memory was 284.2MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 213.5MB in the beginning and 653.4MB in the end (delta: -439.9MB). Peak memory consumption was 771.2MB. Max. memory is 8.0GB. [2023-12-19 12:50:18,319 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 215.0MB. Free memory is still 161.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 328.40ms. Allocated memory is still 215.0MB. Free memory was 172.2MB in the beginning and 148.0MB in the end (delta: 24.2MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 67.26ms. Allocated memory is still 215.0MB. Free memory was 148.0MB in the beginning and 141.5MB in the end (delta: 6.5MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 90.47ms. Allocated memory is still 215.0MB. Free memory was 141.5MB in the beginning and 132.3MB in the end (delta: 9.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * RCFGBuilder took 736.53ms. Allocated memory was 215.0MB in the beginning and 284.2MB in the end (delta: 69.2MB). Free memory was 132.1MB in the beginning and 214.0MB in the end (delta: -81.9MB). Peak memory consumption was 20.8MB. Max. memory is 8.0GB. * TraceAbstraction took 330709.75ms. Allocated memory was 284.2MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 213.5MB in the beginning and 653.4MB in the end (delta: -439.9MB). Peak memory consumption was 771.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...