/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/ldv-regression/alt_test.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:49:18,711 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:49:18,799 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:49:18,805 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:49:18,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:49:18,832 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:49:18,832 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:49:18,833 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:49:18,833 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:49:18,837 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:49:18,837 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:49:18,838 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:49:18,838 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:49:18,839 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:49:18,839 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:49:18,840 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:49:18,840 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:49:18,840 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:49:18,840 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:49:18,841 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:49:18,841 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:49:18,841 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:49:18,841 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:49:18,842 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:49:18,842 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:49:18,842 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:49:18,842 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:49:18,842 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:49:18,843 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:49:18,843 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:49:18,844 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:49:18,844 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:49:18,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:49:18,845 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:49:18,845 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:49:18,845 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:49:18,845 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:49:18,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:49:18,845 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:49:18,845 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:49:18,846 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:49:18,846 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:49:18,846 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:49:18,846 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:49:19,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:49:19,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:49:19,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:49:19,105 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:49:19,106 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:49:19,107 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/alt_test.i [2023-12-15 21:49:20,201 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:49:20,409 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:49:20,410 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/alt_test.i [2023-12-15 21:49:20,427 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/588b02391/27398b8fa0b64299adae5f0ffd057358/FLAG2b6b5c77e [2023-12-15 21:49:20,439 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/588b02391/27398b8fa0b64299adae5f0ffd057358 [2023-12-15 21:49:20,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:49:20,442 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:49:20,443 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:49:20,443 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:49:20,455 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:49:20,456 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:49:20" (1/1) ... [2023-12-15 21:49:20,457 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d825ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:49:20, skipping insertion in model container [2023-12-15 21:49:20,457 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:49:20" (1/1) ... [2023-12-15 21:49:20,492 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:49:20,678 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/alt_test.i[22285,22298] [2023-12-15 21:49:20,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:49:20,697 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:49:20,729 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/alt_test.i[22285,22298] [2023-12-15 21:49:20,732 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:49:20,755 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:49:20,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:49:20 WrapperNode [2023-12-15 21:49:20,755 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:49:20,756 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:49:20,756 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:49:20,756 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:49:20,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:49:20" (1/1) ... [2023-12-15 21:49:20,773 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:49:20" (1/1) ... [2023-12-15 21:49:20,788 INFO L138 Inliner]: procedures = 121, calls = 13, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 35 [2023-12-15 21:49:20,788 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:49:20,789 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:49:20,789 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:49:20,789 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:49:20,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:49:20" (1/1) ... [2023-12-15 21:49:20,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:49:20" (1/1) ... [2023-12-15 21:49:20,800 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:49:20" (1/1) ... [2023-12-15 21:49:20,810 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 21:49:20,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:49:20" (1/1) ... [2023-12-15 21:49:20,810 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:49:20" (1/1) ... [2023-12-15 21:49:20,813 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:49:20" (1/1) ... [2023-12-15 21:49:20,815 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:49:20" (1/1) ... [2023-12-15 21:49:20,816 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:49:20" (1/1) ... [2023-12-15 21:49:20,816 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:49:20" (1/1) ... [2023-12-15 21:49:20,818 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:49:20,818 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:49:20,819 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:49:20,819 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:49:20,819 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:49:20" (1/1) ... [2023-12-15 21:49:20,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:49:20,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:49:20,888 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 21:49:20,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 21:49:20,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-15 21:49:20,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:49:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-15 21:49:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure l_free [2023-12-15 21:49:20,920 INFO L138 BoogieDeclarations]: Found implementation of procedure l_free [2023-12-15 21:49:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:49:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:49:20,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:49:21,021 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:49:21,022 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:49:21,104 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:49:21,133 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:49:21,134 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-15 21:49:21,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:49:21 BoogieIcfgContainer [2023-12-15 21:49:21,134 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:49:21,136 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:49:21,136 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:49:21,139 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:49:21,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:49:20" (1/3) ... [2023-12-15 21:49:21,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6fc0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:49:21, skipping insertion in model container [2023-12-15 21:49:21,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:49:20" (2/3) ... [2023-12-15 21:49:21,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6fc0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:49:21, skipping insertion in model container [2023-12-15 21:49:21,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:49:21" (3/3) ... [2023-12-15 21:49:21,143 INFO L112 eAbstractionObserver]: Analyzing ICFG alt_test.i [2023-12-15 21:49:21,158 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:49:21,159 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:49:21,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:49:21,200 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;@3bbebc50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:49:21,200 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:49:21,203 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 21:49:21,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-15 21:49:21,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:49:21,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:49:21,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting l_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [l_freeErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:49:21,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:49:21,215 INFO L85 PathProgramCache]: Analyzing trace with hash -339788470, now seen corresponding path program 1 times [2023-12-15 21:49:21,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:49:21,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821443794] [2023-12-15 21:49:21,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:49:21,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:49:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:49:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:49:21,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:49:21,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821443794] [2023-12-15 21:49:21,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821443794] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:49:21,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:49:21,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:49:21,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376367717] [2023-12-15 21:49:21,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:49:21,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:49:21,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:49:21,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:49:21,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:49:21,565 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:49:21,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:49:21,595 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2023-12-15 21:49:21,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:49:21,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-15 21:49:21,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:49:21,604 INFO L225 Difference]: With dead ends: 30 [2023-12-15 21:49:21,604 INFO L226 Difference]: Without dead ends: 18 [2023-12-15 21:49:21,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:49:21,609 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:49:21,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:49:21,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-15 21:49:21,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2023-12-15 21:49:21,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 21:49:21,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2023-12-15 21:49:21,665 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 8 [2023-12-15 21:49:21,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:49:21,665 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2023-12-15 21:49:21,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:49:21,666 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2023-12-15 21:49:21,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-15 21:49:21,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:49:21,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:49:21,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 21:49:21,668 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting l_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [l_freeErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:49:21,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:49:21,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1435218892, now seen corresponding path program 1 times [2023-12-15 21:49:21,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:49:21,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245847907] [2023-12-15 21:49:21,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:49:21,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:49:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:49:21,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:49:21,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:49:21,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245847907] [2023-12-15 21:49:21,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245847907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:49:21,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:49:21,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:49:21,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484768495] [2023-12-15 21:49:21,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:49:21,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:49:21,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:49:21,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:49:21,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:49:21,735 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:49:21,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:49:21,765 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2023-12-15 21:49:21,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:49:21,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-15 21:49:21,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:49:21,767 INFO L225 Difference]: With dead ends: 25 [2023-12-15 21:49:21,767 INFO L226 Difference]: Without dead ends: 15 [2023-12-15 21:49:21,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:49:21,769 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:49:21,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:49:21,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-15 21:49:21,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-12-15 21:49:21,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-15 21:49:21,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-12-15 21:49:21,773 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2023-12-15 21:49:21,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:49:21,774 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-12-15 21:49:21,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:49:21,774 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-12-15 21:49:21,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-15 21:49:21,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:49:21,775 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:49:21,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 21:49:21,775 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting l_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [l_freeErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:49:21,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:49:21,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1439110821, now seen corresponding path program 1 times [2023-12-15 21:49:21,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:49:21,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108004336] [2023-12-15 21:49:21,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:49:21,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:49:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:49:21,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 21:49:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:49:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:49:21,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:49:21,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108004336] [2023-12-15 21:49:21,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108004336] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:49:21,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:49:21,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:49:21,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974231413] [2023-12-15 21:49:21,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:49:21,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:49:21,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:49:21,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:49:21,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:49:21,963 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-15 21:49:22,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:49:22,063 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2023-12-15 21:49:22,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:49:22,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-12-15 21:49:22,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:49:22,066 INFO L225 Difference]: With dead ends: 25 [2023-12-15 21:49:22,066 INFO L226 Difference]: Without dead ends: 15 [2023-12-15 21:49:22,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:49:22,068 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:49:22,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 13 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:49:22,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-15 21:49:22,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-12-15 21:49:22,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-15 21:49:22,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2023-12-15 21:49:22,072 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2023-12-15 21:49:22,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:49:22,073 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2023-12-15 21:49:22,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-15 21:49:22,073 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2023-12-15 21:49:22,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-15 21:49:22,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:49:22,074 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:49:22,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 21:49:22,074 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting l_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [l_freeErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:49:22,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:49:22,075 INFO L85 PathProgramCache]: Analyzing trace with hash 418407634, now seen corresponding path program 1 times [2023-12-15 21:49:22,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:49:22,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487984426] [2023-12-15 21:49:22,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:49:22,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:49:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-15 21:49:22,094 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-15 21:49:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-15 21:49:22,121 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-15 21:49:22,121 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-15 21:49:22,122 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location l_freeErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:49:22,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 21:49:22,127 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-15 21:49:22,129 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:49:22,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:49:22 BoogieIcfgContainer [2023-12-15 21:49:22,154 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:49:22,155 INFO L158 Benchmark]: Toolchain (without parser) took 1712.70ms. Allocated memory was 186.6MB in the beginning and 275.8MB in the end (delta: 89.1MB). Free memory was 133.4MB in the beginning and 215.3MB in the end (delta: -81.8MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. [2023-12-15 21:49:22,155 INFO L158 Benchmark]: CDTParser took 0.57ms. Allocated memory is still 186.6MB. Free memory is still 133.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:49:22,156 INFO L158 Benchmark]: CACSL2BoogieTranslator took 312.15ms. Allocated memory is still 186.6MB. Free memory was 133.3MB in the beginning and 116.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-15 21:49:22,156 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.12ms. Allocated memory is still 186.6MB. Free memory was 116.5MB in the beginning and 114.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 21:49:22,156 INFO L158 Benchmark]: Boogie Preprocessor took 28.95ms. Allocated memory is still 186.6MB. Free memory was 114.6MB in the beginning and 112.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 21:49:22,157 INFO L158 Benchmark]: RCFGBuilder took 315.73ms. Allocated memory is still 186.6MB. Free memory was 112.9MB in the beginning and 100.9MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-15 21:49:22,157 INFO L158 Benchmark]: TraceAbstraction took 1018.52ms. Allocated memory was 186.6MB in the beginning and 275.8MB in the end (delta: 89.1MB). Free memory was 100.3MB in the beginning and 215.3MB in the end (delta: -115.0MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:49:22,159 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57ms. Allocated memory is still 186.6MB. Free memory is still 133.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 312.15ms. Allocated memory is still 186.6MB. Free memory was 133.3MB in the beginning and 116.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.12ms. Allocated memory is still 186.6MB. Free memory was 116.5MB in the beginning and 114.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.95ms. Allocated memory is still 186.6MB. Free memory was 114.6MB in the beginning and 112.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 315.73ms. Allocated memory is still 186.6MB. Free memory was 112.9MB in the beginning and 100.9MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1018.52ms. Allocated memory was 186.6MB in the beginning and 275.8MB in the end (delta: 89.1MB). Free memory was 100.3MB in the beginning and 215.3MB in the end (delta: -115.0MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 516]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L518] int globalState = 0; [L523] CALL, EXPR l_malloc(sizeof(int)) [L529] void *retVal = malloc(size); [L530] COND TRUE retVal != ((void *)0) [L531] globalState=1 VAL [\old(size)=4, globalState=1, retVal={-1:0}, size=4] [L532] return retVal; [L523] RET, EXPR l_malloc(sizeof(int)) [L523] int *a = (int*) l_malloc(sizeof(int)); [L524] CALL l_free(a) VAL [\old(globalState)=1, globalState=1] [L535] COND TRUE ptr!=((void *)0) VAL [\old(globalState)=1, globalState=1, ptr={-1:0}, ptr={-1:0}] [L535] (globalState == 1) ? (0) : __blast_assert () VAL [\old(globalState)=1, globalState=1, ptr={-1:0}, ptr={-1:0}] [L536] globalState = 0 [L524] RET l_free(a) VAL [\old(argc)=49, a={-1:0}, argc=49, argv={51:50}, globalState=0] [L525] CALL l_free(a) VAL [\old(globalState)=0, globalState=0] [L535] COND TRUE ptr!=((void *)0) VAL [\old(globalState)=0, globalState=0, ptr={-1:0}, ptr={-1:0}] [L535] (globalState == 1) ? (0) : __blast_assert () [L535] CALL __blast_assert () [L516] reach_error() VAL [\old(globalState)=0, globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 51 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 61 IncrementalHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 24 mSDtfsCounter, 61 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=1, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 60 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-12-15 21:49:22,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...