./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0237.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0237.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 59c31190ccc8063bc9e40e87ef868627685497d396c28c826c00fa8abad7dfea --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 07:44:56,680 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:44:56,763 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 07:44:56,767 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:44:56,768 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:44:56,800 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:44:56,801 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:44:56,804 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:44:56,804 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 07:44:56,805 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 07:44:56,805 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:44:56,806 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:44:56,807 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 07:44:56,809 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 07:44:56,810 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 07:44:56,810 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:44:56,811 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:44:56,811 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:44:56,811 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:44:56,812 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:44:56,812 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 07:44:56,817 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 07:44:56,817 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 07:44:56,817 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:44:56,817 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 07:44:56,818 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:44:56,818 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 07:44:56,820 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:44:56,820 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:44:56,821 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:44:56,821 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 07:44:56,822 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:44:56,822 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:44:56,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 07:44:56,823 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:44:56,823 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:44:56,823 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 07:44:56,823 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:44:56,824 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:44:56,824 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 07:44:56,824 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 07:44:56,824 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:44:56,825 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59c31190ccc8063bc9e40e87ef868627685497d396c28c826c00fa8abad7dfea [2024-11-09 07:44:57,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:44:57,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:44:57,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:44:57,128 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:44:57,129 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:44:57,130 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0237.i [2024-11-09 07:44:58,670 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:44:58,955 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:44:58,955 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0237.i [2024-11-09 07:44:58,972 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2e41e296/f32de695322c4cb9a12751267b361fdd/FLAG9299fe770 [2024-11-09 07:44:58,986 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2e41e296/f32de695322c4cb9a12751267b361fdd [2024-11-09 07:44:58,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:44:58,990 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:44:58,992 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:44:58,992 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:44:58,998 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:44:58,999 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:44:58" (1/1) ... [2024-11-09 07:44:59,000 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2705d31f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:44:59, skipping insertion in model container [2024-11-09 07:44:59,000 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:44:58" (1/1) ... [2024-11-09 07:44:59,048 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:44:59,464 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 07:44:59,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:44:59,518 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:44:59,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:44:59,673 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:44:59,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:44:59 WrapperNode [2024-11-09 07:44:59,674 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:44:59,675 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:44:59,675 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:44:59,675 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:44:59,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:44:59" (1/1) ... [2024-11-09 07:44:59,706 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:44:59" (1/1) ... [2024-11-09 07:44:59,750 INFO L138 Inliner]: procedures = 188, calls = 66, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 222 [2024-11-09 07:44:59,751 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:44:59,752 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:44:59,752 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:44:59,752 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:44:59,764 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:44:59" (1/1) ... [2024-11-09 07:44:59,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:44:59" (1/1) ... [2024-11-09 07:44:59,770 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:44:59" (1/1) ... [2024-11-09 07:44:59,820 INFO L175 MemorySlicer]: Split 38 memory accesses to 3 slices as follows [2, 32, 4]. 84 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 18 writes are split as follows [0, 17, 1]. [2024-11-09 07:44:59,821 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:44:59" (1/1) ... [2024-11-09 07:44:59,821 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:44:59" (1/1) ... [2024-11-09 07:44:59,832 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:44:59" (1/1) ... [2024-11-09 07:44:59,836 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:44:59" (1/1) ... [2024-11-09 07:44:59,839 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:44:59" (1/1) ... [2024-11-09 07:44:59,845 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:44:59" (1/1) ... [2024-11-09 07:44:59,849 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:44:59,850 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:44:59,850 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:44:59,850 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:44:59,852 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:44:59" (1/1) ... [2024-11-09 07:44:59,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 07:44:59,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:44:59,892 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) [2024-11-09 07:44:59,896 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 [2024-11-09 07:44:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 07:44:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:44:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-09 07:44:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-09 07:44:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-09 07:44:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-09 07:44:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-09 07:44:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-09 07:44:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2024-11-09 07:44:59,954 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2024-11-09 07:44:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 07:44:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-09 07:44:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-09 07:44:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-09 07:44:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 07:44:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 07:44:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 07:44:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:44:59,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:45:00,149 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:45:00,152 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:45:00,758 INFO L? ?]: Removed 225 outVars from TransFormulas that were not future-live. [2024-11-09 07:45:00,758 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:45:00,776 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:45:00,777 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-09 07:45:00,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:45:00 BoogieIcfgContainer [2024-11-09 07:45:00,777 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:45:00,779 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:45:00,780 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:45:00,783 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:45:00,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:44:58" (1/3) ... [2024-11-09 07:45:00,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775bb10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:45:00, skipping insertion in model container [2024-11-09 07:45:00,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:44:59" (2/3) ... [2024-11-09 07:45:00,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775bb10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:45:00, skipping insertion in model container [2024-11-09 07:45:00,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:45:00" (3/3) ... [2024-11-09 07:45:00,786 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0237.i [2024-11-09 07:45:00,804 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:45:00,805 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 87 error locations. [2024-11-09 07:45:00,869 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:45:00,876 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@107a2f6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:45:00,876 INFO L334 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2024-11-09 07:45:00,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 210 states, 115 states have (on average 1.9478260869565218) internal successors, (224), 202 states have internal predecessors, (224), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 07:45:00,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 07:45:00,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:45:00,891 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 07:45:00,893 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-09 07:45:00,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:45:00,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1546406, now seen corresponding path program 1 times [2024-11-09 07:45:00,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:45:00,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524667608] [2024-11-09 07:45:00,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:45:00,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:45:00,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:45:01,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:45:01,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524667608] [2024-11-09 07:45:01,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524667608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:45:01,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:45:01,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:45:01,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465534687] [2024-11-09 07:45:01,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:45:01,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 07:45:01,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:45:01,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 07:45:01,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 07:45:01,075 INFO L87 Difference]: Start difference. First operand has 210 states, 115 states have (on average 1.9478260869565218) internal successors, (224), 202 states have internal predecessors, (224), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:45:01,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:45:01,102 INFO L93 Difference]: Finished difference Result 210 states and 225 transitions. [2024-11-09 07:45:01,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 07:45:01,105 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-09 07:45:01,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:45:01,114 INFO L225 Difference]: With dead ends: 210 [2024-11-09 07:45:01,114 INFO L226 Difference]: Without dead ends: 208 [2024-11-09 07:45:01,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 07:45:01,119 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:45:01,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:45:01,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-09 07:45:01,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2024-11-09 07:45:01,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 114 states have (on average 1.8508771929824561) internal successors, (211), 200 states have internal predecessors, (211), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 07:45:01,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 223 transitions. [2024-11-09 07:45:01,171 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 223 transitions. Word has length 4 [2024-11-09 07:45:01,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:45:01,171 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 223 transitions. [2024-11-09 07:45:01,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:45:01,172 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 223 transitions. [2024-11-09 07:45:01,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 07:45:01,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:45:01,172 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 07:45:01,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:45:01,173 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-09 07:45:01,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:45:01,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1481500665, now seen corresponding path program 1 times [2024-11-09 07:45:01,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:45:01,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284194572] [2024-11-09 07:45:01,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:45:01,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:45:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:45:01,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:45:01,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284194572] [2024-11-09 07:45:01,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284194572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:45:01,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:45:01,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:45:01,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819686177] [2024-11-09 07:45:01,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:45:01,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:45:01,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:45:01,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:45:01,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:45:01,381 INFO L87 Difference]: Start difference. First operand 208 states and 223 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-11-09 07:45:01,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:45:01,597 INFO L93 Difference]: Finished difference Result 207 states and 222 transitions. [2024-11-09 07:45:01,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:45:01,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 6 [2024-11-09 07:45:01,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:45:01,601 INFO L225 Difference]: With dead ends: 207 [2024-11-09 07:45:01,602 INFO L226 Difference]: Without dead ends: 207 [2024-11-09 07:45:01,602 INFO L431 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 [2024-11-09 07:45:01,604 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 4 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:45:01,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 351 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:45:01,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-09 07:45:01,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2024-11-09 07:45:01,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 114 states have (on average 1.8421052631578947) internal successors, (210), 199 states have internal predecessors, (210), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 07:45:01,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 222 transitions. [2024-11-09 07:45:01,618 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 222 transitions. Word has length 6 [2024-11-09 07:45:01,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:45:01,619 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 222 transitions. [2024-11-09 07:45:01,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-11-09 07:45:01,619 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 222 transitions. [2024-11-09 07:45:01,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 07:45:01,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:45:01,620 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:45:01,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 07:45:01,620 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-09 07:45:01,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:45:01,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1318119607, now seen corresponding path program 1 times [2024-11-09 07:45:01,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:45:01,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700469015] [2024-11-09 07:45:01,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:45:01,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:45:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:45:01,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418842003] [2024-11-09 07:45:01,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:45:01,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:45:01,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:45:01,683 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) [2024-11-09 07:45:01,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:45:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:01,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 07:45:01,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:45:01,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 07:45:01,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:45:01,920 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:45:01,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:45:01,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700469015] [2024-11-09 07:45:01,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:45:01,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418842003] [2024-11-09 07:45:01,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418842003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:45:01,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:45:01,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:45:01,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111585411] [2024-11-09 07:45:01,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:45:01,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:45:01,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:45:01,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:45:01,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:45:01,923 INFO L87 Difference]: Start difference. First operand 207 states and 222 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-09 07:45:02,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:45:02,098 INFO L93 Difference]: Finished difference Result 216 states and 231 transitions. [2024-11-09 07:45:02,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:45:02,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 7 [2024-11-09 07:45:02,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:45:02,100 INFO L225 Difference]: With dead ends: 216 [2024-11-09 07:45:02,102 INFO L226 Difference]: Without dead ends: 216 [2024-11-09 07:45:02,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:45:02,103 INFO L432 NwaCegarLoop]: 216 mSDtfsCounter, 11 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:45:02,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 577 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:45:02,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-09 07:45:02,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-11-09 07:45:02,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 122 states have (on average 1.7950819672131149) internal successors, (219), 207 states have internal predecessors, (219), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 07:45:02,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 231 transitions. [2024-11-09 07:45:02,130 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 231 transitions. Word has length 7 [2024-11-09 07:45:02,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:45:02,131 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 231 transitions. [2024-11-09 07:45:02,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-09 07:45:02,135 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 231 transitions. [2024-11-09 07:45:02,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 07:45:02,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:45:02,136 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:45:02,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 07:45:02,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:45:02,337 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-09 07:45:02,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:45:02,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1935357312, now seen corresponding path program 1 times [2024-11-09 07:45:02,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:45:02,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279794929] [2024-11-09 07:45:02,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:45:02,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:45:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:45:02,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [620662626] [2024-11-09 07:45:02,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:45:02,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:45:02,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:45:02,410 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) [2024-11-09 07:45:02,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 07:45:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:02,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 07:45:02,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:45:02,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 07:45:02,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:45:02,592 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:45:02,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:45:02,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279794929] [2024-11-09 07:45:02,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:45:02,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620662626] [2024-11-09 07:45:02,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620662626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:45:02,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:45:02,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:45:02,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268118327] [2024-11-09 07:45:02,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:45:02,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:45:02,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:45:02,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:45:02,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:45:02,601 INFO L87 Difference]: Start difference. First operand 216 states and 231 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 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) [2024-11-09 07:45:02,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:45:02,760 INFO L93 Difference]: Finished difference Result 225 states and 240 transitions. [2024-11-09 07:45:02,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:45:02,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 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 19 [2024-11-09 07:45:02,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:45:02,762 INFO L225 Difference]: With dead ends: 225 [2024-11-09 07:45:02,762 INFO L226 Difference]: Without dead ends: 225 [2024-11-09 07:45:02,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:45:02,763 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 11 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:45:02,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 580 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:45:02,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-09 07:45:02,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2024-11-09 07:45:02,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 130 states have (on average 1.7538461538461538) internal successors, (228), 215 states have internal predecessors, (228), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 07:45:02,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 240 transitions. [2024-11-09 07:45:02,778 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 240 transitions. Word has length 19 [2024-11-09 07:45:02,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:45:02,778 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 240 transitions. [2024-11-09 07:45:02,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 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) [2024-11-09 07:45:02,779 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 240 transitions. [2024-11-09 07:45:02,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 07:45:02,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:45:02,780 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:45:02,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 07:45:02,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 07:45:02,981 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-09 07:45:02,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:45:02,982 INFO L85 PathProgramCache]: Analyzing trace with hash -537095444, now seen corresponding path program 1 times [2024-11-09 07:45:02,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:45:02,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606658262] [2024-11-09 07:45:02,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:45:02,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:45:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:45:03,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1011169242] [2024-11-09 07:45:03,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:45:03,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:45:03,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:45:03,103 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) [2024-11-09 07:45:03,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 07:45:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:03,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 07:45:03,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:45:03,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 07:45:03,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 07:45:03,628 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-09 07:45:03,628 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:45:03,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:45:03,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606658262] [2024-11-09 07:45:03,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:45:03,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011169242] [2024-11-09 07:45:03,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011169242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:45:03,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:45:03,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 07:45:03,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995431953] [2024-11-09 07:45:03,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:45:03,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:45:03,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:45:03,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:45:03,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:45:03,636 INFO L87 Difference]: Start difference. First operand 225 states and 240 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 07:45:03,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:45:03,811 INFO L93 Difference]: Finished difference Result 243 states and 258 transitions. [2024-11-09 07:45:03,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:45:03,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 66 [2024-11-09 07:45:03,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:45:03,818 INFO L225 Difference]: With dead ends: 243 [2024-11-09 07:45:03,818 INFO L226 Difference]: Without dead ends: 228 [2024-11-09 07:45:03,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:45:03,819 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 3 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:45:03,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 785 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:45:03,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-09 07:45:03,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2024-11-09 07:45:03,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 133 states have (on average 1.736842105263158) internal successors, (231), 218 states have internal predecessors, (231), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 07:45:03,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 243 transitions. [2024-11-09 07:45:03,835 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 243 transitions. Word has length 66 [2024-11-09 07:45:03,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:45:03,836 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 243 transitions. [2024-11-09 07:45:03,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 07:45:03,836 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 243 transitions. [2024-11-09 07:45:03,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 07:45:03,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:45:03,840 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:45:03,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 07:45:04,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:45:04,041 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-09 07:45:04,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:45:04,042 INFO L85 PathProgramCache]: Analyzing trace with hash 988332756, now seen corresponding path program 1 times [2024-11-09 07:45:04,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:45:04,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869033256] [2024-11-09 07:45:04,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:45:04,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:45:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:45:04,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900688885] [2024-11-09 07:45:04,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:45:04,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:45:04,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:45:04,275 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) [2024-11-09 07:45:04,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 07:45:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:04,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 07:45:04,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:45:04,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 07:45:04,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 07:45:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 92 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-09 07:45:04,646 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:45:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 48 proven. 12 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-09 07:45:04,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:45:04,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869033256] [2024-11-09 07:45:04,885 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:45:04,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900688885] [2024-11-09 07:45:04,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900688885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:45:04,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:45:04,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2024-11-09 07:45:04,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288672490] [2024-11-09 07:45:04,886 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:45:04,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 07:45:04,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:45:04,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 07:45:04,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-09 07:45:04,887 INFO L87 Difference]: Start difference. First operand 228 states and 243 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 07:45:05,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:45:05,226 INFO L93 Difference]: Finished difference Result 253 states and 269 transitions. [2024-11-09 07:45:05,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 07:45:05,227 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2024-11-09 07:45:05,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:45:05,228 INFO L225 Difference]: With dead ends: 253 [2024-11-09 07:45:05,228 INFO L226 Difference]: Without dead ends: 233 [2024-11-09 07:45:05,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2024-11-09 07:45:05,229 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 28 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:45:05,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 991 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:45:05,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-09 07:45:05,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2024-11-09 07:45:05,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 138 states have (on average 1.710144927536232) internal successors, (236), 223 states have internal predecessors, (236), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 07:45:05,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 248 transitions. [2024-11-09 07:45:05,242 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 248 transitions. Word has length 71 [2024-11-09 07:45:05,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:45:05,242 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 248 transitions. [2024-11-09 07:45:05,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 07:45:05,242 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 248 transitions. [2024-11-09 07:45:05,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-09 07:45:05,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:45:05,244 INFO L215 NwaCegarLoop]: trace histogram [18, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:45:05,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 07:45:05,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:45:05,445 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-09 07:45:05,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:45:05,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1006150804, now seen corresponding path program 2 times [2024-11-09 07:45:05,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:45:05,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18500878] [2024-11-09 07:45:05,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:45:05,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:45:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:45:05,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1893288958] [2024-11-09 07:45:05,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:45:05,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:45:05,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:45:05,689 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) [2024-11-09 07:45:05,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 07:45:06,069 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:45:06,069 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:45:06,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 07:45:06,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:45:06,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 07:45:06,121 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-11-09 07:45:06,121 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:45:06,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:45:06,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18500878] [2024-11-09 07:45:06,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:45:06,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893288958] [2024-11-09 07:45:06,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893288958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:45:06,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:45:06,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:45:06,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757517978] [2024-11-09 07:45:06,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:45:06,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:45:06,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:45:06,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:45:06,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:45:06,124 INFO L87 Difference]: Start difference. First operand 233 states and 248 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 07:45:06,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:45:06,243 INFO L93 Difference]: Finished difference Result 232 states and 247 transitions. [2024-11-09 07:45:06,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:45:06,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 84 [2024-11-09 07:45:06,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:45:06,245 INFO L225 Difference]: With dead ends: 232 [2024-11-09 07:45:06,245 INFO L226 Difference]: Without dead ends: 232 [2024-11-09 07:45:06,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:45:06,247 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 11 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:45:06,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 587 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:45:06,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-09 07:45:06,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-11-09 07:45:06,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 138 states have (on average 1.7028985507246377) internal successors, (235), 222 states have internal predecessors, (235), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 07:45:06,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 247 transitions. [2024-11-09 07:45:06,256 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 247 transitions. Word has length 84 [2024-11-09 07:45:06,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:45:06,258 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 247 transitions. [2024-11-09 07:45:06,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 07:45:06,259 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 247 transitions. [2024-11-09 07:45:06,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-09 07:45:06,261 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:45:06,261 INFO L215 NwaCegarLoop]: trace histogram [20, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:45:06,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 07:45:06,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:45:06,466 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-09 07:45:06,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:45:06,467 INFO L85 PathProgramCache]: Analyzing trace with hash -104400130, now seen corresponding path program 1 times [2024-11-09 07:45:06,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:45:06,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965777255] [2024-11-09 07:45:06,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:45:06,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:45:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:07,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-09 07:45:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:07,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-09 07:45:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:07,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-09 07:45:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:07,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-09 07:45:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:07,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-09 07:45:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:07,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-09 07:45:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:07,461 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 200 proven. 22 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-11-09 07:45:07,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:45:07,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965777255] [2024-11-09 07:45:07,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965777255] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:45:07,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492639076] [2024-11-09 07:45:07,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:45:07,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:45:07,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:45:07,464 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) [2024-11-09 07:45:07,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 07:45:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:07,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 07:45:07,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:45:07,829 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2024-11-09 07:45:07,873 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-09 07:45:07,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-09 07:45:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 205 proven. 1 refuted. 0 times theorem prover too weak. 218 trivial. 21 not checked. [2024-11-09 07:45:07,884 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:45:08,127 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 07:45:08,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2024-11-09 07:45:08,150 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 205 proven. 22 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2024-11-09 07:45:08,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492639076] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:45:08,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:45:08,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2024-11-09 07:45:08,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822070471] [2024-11-09 07:45:08,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:45:08,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 07:45:08,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:45:08,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 07:45:08,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=196, Unknown=1, NotChecked=28, Total=272 [2024-11-09 07:45:08,153 INFO L87 Difference]: Start difference. First operand 232 states and 247 transitions. Second operand has 17 states, 16 states have (on average 3.8125) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 07:45:08,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:45:08,754 INFO L93 Difference]: Finished difference Result 228 states and 243 transitions. [2024-11-09 07:45:08,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 07:45:08,755 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.8125) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 93 [2024-11-09 07:45:08,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:45:08,756 INFO L225 Difference]: With dead ends: 228 [2024-11-09 07:45:08,756 INFO L226 Difference]: Without dead ends: 228 [2024-11-09 07:45:08,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 186 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=309, Unknown=1, NotChecked=36, Total=420 [2024-11-09 07:45:08,757 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 23 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 209 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:45:08,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1306 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 834 Invalid, 0 Unknown, 209 Unchecked, 0.5s Time] [2024-11-09 07:45:08,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-09 07:45:08,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2024-11-09 07:45:08,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 138 states have (on average 1.673913043478261) internal successors, (231), 218 states have internal predecessors, (231), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 07:45:08,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 243 transitions. [2024-11-09 07:45:08,763 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 243 transitions. Word has length 93 [2024-11-09 07:45:08,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:45:08,763 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 243 transitions. [2024-11-09 07:45:08,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.8125) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 07:45:08,764 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 243 transitions. [2024-11-09 07:45:08,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-09 07:45:08,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:45:08,766 INFO L215 NwaCegarLoop]: trace histogram [20, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:45:08,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 07:45:08,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:45:08,971 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-09 07:45:08,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:45:08,971 INFO L85 PathProgramCache]: Analyzing trace with hash -104400129, now seen corresponding path program 1 times [2024-11-09 07:45:08,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:45:08,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758957454] [2024-11-09 07:45:08,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:45:08,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:45:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:45:09,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34151176] [2024-11-09 07:45:09,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:45:09,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:45:09,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:45:09,137 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) [2024-11-09 07:45:09,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 07:45:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:09,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-09 07:45:09,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:45:09,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 07:45:09,879 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2024-11-09 07:45:09,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:45:09,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-09 07:45:09,933 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 07:45:09,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 07:45:09,952 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 22 not checked. [2024-11-09 07:45:09,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:45:10,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:45:10,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758957454] [2024-11-09 07:45:10,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:45:10,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34151176] [2024-11-09 07:45:10,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34151176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:45:10,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:45:10,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-09 07:45:10,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289915137] [2024-11-09 07:45:10,057 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 07:45:10,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 07:45:10,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:45:10,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 07:45:10,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=153, Unknown=1, NotChecked=24, Total=210 [2024-11-09 07:45:10,058 INFO L87 Difference]: Start difference. First operand 228 states and 243 transitions. Second operand has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 07:45:11,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:45:11,055 INFO L93 Difference]: Finished difference Result 224 states and 239 transitions. [2024-11-09 07:45:11,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 07:45:11,056 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 93 [2024-11-09 07:45:11,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:45:11,057 INFO L225 Difference]: With dead ends: 224 [2024-11-09 07:45:11,058 INFO L226 Difference]: Without dead ends: 224 [2024-11-09 07:45:11,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=328, Unknown=1, NotChecked=36, Total=420 [2024-11-09 07:45:11,059 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 16 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:45:11,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1127 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1161 Invalid, 0 Unknown, 204 Unchecked, 0.8s Time] [2024-11-09 07:45:11,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-09 07:45:11,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2024-11-09 07:45:11,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 138 states have (on average 1.644927536231884) internal successors, (227), 214 states have internal predecessors, (227), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 07:45:11,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 239 transitions. [2024-11-09 07:45:11,065 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 239 transitions. Word has length 93 [2024-11-09 07:45:11,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:45:11,065 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 239 transitions. [2024-11-09 07:45:11,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 07:45:11,066 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 239 transitions. [2024-11-09 07:45:11,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-09 07:45:11,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:45:11,067 INFO L215 NwaCegarLoop]: trace histogram [20, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:45:11,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 07:45:11,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:45:11,268 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-09 07:45:11,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:45:11,269 INFO L85 PathProgramCache]: Analyzing trace with hash -627923680, now seen corresponding path program 1 times [2024-11-09 07:45:11,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:45:11,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959009250] [2024-11-09 07:45:11,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:45:11,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:45:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:11,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-09 07:45:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:11,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-09 07:45:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:11,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-09 07:45:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:11,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-09 07:45:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:11,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-09 07:45:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:11,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-09 07:45:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:11,860 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2024-11-09 07:45:11,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:45:11,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959009250] [2024-11-09 07:45:11,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959009250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:45:11,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:45:11,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 07:45:11,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341597614] [2024-11-09 07:45:11,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:45:11,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 07:45:11,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:45:11,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 07:45:11,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-09 07:45:11,862 INFO L87 Difference]: Start difference. First operand 224 states and 239 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 07:45:12,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:45:12,303 INFO L93 Difference]: Finished difference Result 223 states and 238 transitions. [2024-11-09 07:45:12,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 07:45:12,304 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 96 [2024-11-09 07:45:12,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:45:12,305 INFO L225 Difference]: With dead ends: 223 [2024-11-09 07:45:12,306 INFO L226 Difference]: Without dead ends: 223 [2024-11-09 07:45:12,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-09 07:45:12,307 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 9 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:45:12,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1127 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:45:12,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-09 07:45:12,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2024-11-09 07:45:12,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 138 states have (on average 1.6376811594202898) internal successors, (226), 213 states have internal predecessors, (226), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 07:45:12,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 238 transitions. [2024-11-09 07:45:12,312 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 238 transitions. Word has length 96 [2024-11-09 07:45:12,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:45:12,313 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 238 transitions. [2024-11-09 07:45:12,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 07:45:12,313 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 238 transitions. [2024-11-09 07:45:12,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-09 07:45:12,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:45:12,314 INFO L215 NwaCegarLoop]: trace histogram [20, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:45:12,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 07:45:12,314 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-09 07:45:12,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:45:12,315 INFO L85 PathProgramCache]: Analyzing trace with hash -627923679, now seen corresponding path program 1 times [2024-11-09 07:45:12,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:45:12,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259112627] [2024-11-09 07:45:12,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:45:12,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:45:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:13,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-09 07:45:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:13,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-09 07:45:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:13,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-09 07:45:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:13,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-09 07:45:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:13,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-09 07:45:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:14,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-09 07:45:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:14,188 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 200 proven. 32 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2024-11-09 07:45:14,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:45:14,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259112627] [2024-11-09 07:45:14,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259112627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:45:14,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139388627] [2024-11-09 07:45:14,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:45:14,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:45:14,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:45:14,191 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) [2024-11-09 07:45:14,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 07:45:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:14,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-09 07:45:14,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:45:14,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-09 07:45:24,525 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2024-11-09 07:45:24,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:45:24,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-09 07:45:24,592 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 07:45:24,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 07:45:24,627 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 177 proven. 118 refuted. 0 times theorem prover too weak. 104 trivial. 46 not checked. [2024-11-09 07:45:24,627 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:45:24,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139388627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:45:24,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:45:24,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22] total 38 [2024-11-09 07:45:24,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531593030] [2024-11-09 07:45:24,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:45:24,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-09 07:45:24,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:45:24,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-09 07:45:24,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1356, Unknown=2, NotChecked=74, Total=1560 [2024-11-09 07:45:24,775 INFO L87 Difference]: Start difference. First operand 223 states and 238 transitions. Second operand has 38 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 32 states have internal predecessors, (75), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-09 07:45:28,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 07:45:31,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:45:31,488 INFO L93 Difference]: Finished difference Result 258 states and 285 transitions. [2024-11-09 07:45:31,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 07:45:31,489 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 32 states have internal predecessors, (75), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 96 [2024-11-09 07:45:31,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:45:31,491 INFO L225 Difference]: With dead ends: 258 [2024-11-09 07:45:31,491 INFO L226 Difference]: Without dead ends: 255 [2024-11-09 07:45:31,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 90 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=253, Invalid=2611, Unknown=2, NotChecked=104, Total=2970 [2024-11-09 07:45:31,493 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 12 mSDsluCounter, 2804 mSDsCounter, 0 mSdLazyCounter, 2565 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 2784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2565 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 216 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:45:31,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3008 Invalid, 2784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2565 Invalid, 1 Unknown, 216 Unchecked, 5.8s Time] [2024-11-09 07:45:31,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-09 07:45:31,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 229. [2024-11-09 07:45:31,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 143 states have (on average 1.6223776223776223) internal successors, (232), 219 states have internal predecessors, (232), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-09 07:45:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 247 transitions. [2024-11-09 07:45:31,503 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 247 transitions. Word has length 96 [2024-11-09 07:45:31,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:45:31,503 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 247 transitions. [2024-11-09 07:45:31,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 32 states have internal predecessors, (75), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-09 07:45:31,504 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 247 transitions. [2024-11-09 07:45:31,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 07:45:31,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:45:31,506 INFO L215 NwaCegarLoop]: trace histogram [21, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:45:31,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 07:45:31,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 07:45:31,711 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-09 07:45:31,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:45:31,711 INFO L85 PathProgramCache]: Analyzing trace with hash -2051047899, now seen corresponding path program 2 times [2024-11-09 07:45:31,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:45:31,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231973592] [2024-11-09 07:45:31,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:45:31,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:45:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:32,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-09 07:45:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:32,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-09 07:45:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:32,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-09 07:45:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:32,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-09 07:45:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:32,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-09 07:45:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:33,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-11-09 07:45:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:33,534 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 218 proven. 40 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2024-11-09 07:45:33,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:45:33,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231973592] [2024-11-09 07:45:33,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231973592] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:45:33,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426158547] [2024-11-09 07:45:33,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:45:33,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:45:33,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:45:33,537 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) [2024-11-09 07:45:33,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 07:45:34,122 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:45:34,123 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:45:34,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-09 07:45:34,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:45:34,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-09 07:45:39,834 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2024-11-09 07:45:39,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:45:39,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-09 07:45:39,888 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 07:45:39,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 07:45:39,922 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 173 proven. 155 refuted. 0 times theorem prover too weak. 85 trivial. 58 not checked. [2024-11-09 07:45:39,922 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:45:40,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426158547] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:45:40,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:45:40,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 24] total 41 [2024-11-09 07:45:40,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305785905] [2024-11-09 07:45:40,026 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:45:40,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-09 07:45:40,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:45:40,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-09 07:45:40,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1584, Unknown=2, NotChecked=80, Total=1806 [2024-11-09 07:45:40,029 INFO L87 Difference]: Start difference. First operand 229 states and 247 transitions. Second operand has 41 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 35 states have internal predecessors, (79), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-09 07:45:44,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 07:45:47,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:45:47,270 INFO L93 Difference]: Finished difference Result 266 states and 298 transitions. [2024-11-09 07:45:47,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 07:45:47,270 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 35 states have internal predecessors, (79), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 97 [2024-11-09 07:45:47,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:45:47,272 INFO L225 Difference]: With dead ends: 266 [2024-11-09 07:45:47,272 INFO L226 Difference]: Without dead ends: 263 [2024-11-09 07:45:47,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=278, Invalid=3030, Unknown=2, NotChecked=112, Total=3422 [2024-11-09 07:45:47,273 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 11 mSDsluCounter, 2980 mSDsCounter, 0 mSdLazyCounter, 2702 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3187 SdHoareTripleChecker+Invalid, 2923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2702 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 219 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:45:47,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3187 Invalid, 2923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2702 Invalid, 1 Unknown, 219 Unchecked, 6.0s Time] [2024-11-09 07:45:47,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2024-11-09 07:45:47,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 230. [2024-11-09 07:45:47,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 144 states have (on average 1.625) internal successors, (234), 220 states have internal predecessors, (234), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-09 07:45:47,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 249 transitions. [2024-11-09 07:45:47,282 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 249 transitions. Word has length 97 [2024-11-09 07:45:47,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:45:47,282 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 249 transitions. [2024-11-09 07:45:47,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 35 states have internal predecessors, (79), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-09 07:45:47,282 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 249 transitions. [2024-11-09 07:45:47,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-09 07:45:47,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:45:47,283 INFO L215 NwaCegarLoop]: trace histogram [22, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:45:47,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 07:45:47,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:45:47,484 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-09 07:45:47,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:45:47,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1076741537, now seen corresponding path program 3 times [2024-11-09 07:45:47,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:45:47,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258087320] [2024-11-09 07:45:47,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:45:47,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:45:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:48,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-09 07:45:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:48,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-09 07:45:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:48,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-09 07:45:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:48,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-09 07:45:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:48,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-09 07:45:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:49,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-09 07:45:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:45:49,247 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 236 proven. 49 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2024-11-09 07:45:49,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:45:49,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258087320] [2024-11-09 07:45:49,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258087320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:45:49,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065791624] [2024-11-09 07:45:49,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:45:49,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:45:49,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:45:49,250 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) [2024-11-09 07:45:49,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 07:45:49,722 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 07:45:49,722 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:45:49,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 07:45:49,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:45:49,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 07:45:49,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-09 07:45:50,140 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 110 proven. 3 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-11-09 07:45:50,140 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:45:50,473 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 110 proven. 3 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-11-09 07:45:50,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065791624] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:45:50,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:45:50,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 7, 7] total 30 [2024-11-09 07:45:50,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654012717] [2024-11-09 07:45:50,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:45:50,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-09 07:45:50,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:45:50,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-09 07:45:50,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2024-11-09 07:45:50,476 INFO L87 Difference]: Start difference. First operand 230 states and 249 transitions. Second operand has 30 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 27 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-09 07:45:55,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 07:45:56,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 07:46:00,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 07:46:08,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 07:46:10,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 07:46:11,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:46:11,908 INFO L93 Difference]: Finished difference Result 274 states and 305 transitions. [2024-11-09 07:46:11,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-09 07:46:11,910 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 27 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 98 [2024-11-09 07:46:11,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:46:11,912 INFO L225 Difference]: With dead ends: 274 [2024-11-09 07:46:11,912 INFO L226 Difference]: Without dead ends: 256 [2024-11-09 07:46:11,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=491, Invalid=3169, Unknown=0, NotChecked=0, Total=3660 [2024-11-09 07:46:11,915 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 39 mSDsluCounter, 2280 mSDsCounter, 0 mSdLazyCounter, 1925 mSolverCounterSat, 23 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 1951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1925 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:46:11,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 2477 Invalid, 1951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1925 Invalid, 3 Unknown, 0 Unchecked, 18.4s Time] [2024-11-09 07:46:11,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-09 07:46:11,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 236. [2024-11-09 07:46:11,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 150 states have (on average 1.6066666666666667) internal successors, (241), 226 states have internal predecessors, (241), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-09 07:46:11,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 256 transitions. [2024-11-09 07:46:11,926 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 256 transitions. Word has length 98 [2024-11-09 07:46:11,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:46:11,926 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 256 transitions. [2024-11-09 07:46:11,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 27 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-09 07:46:11,926 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 256 transitions. [2024-11-09 07:46:11,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-09 07:46:11,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:46:11,927 INFO L215 NwaCegarLoop]: trace histogram [28, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:46:11,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 07:46:12,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 07:46:12,128 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-09 07:46:12,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:46:12,128 INFO L85 PathProgramCache]: Analyzing trace with hash 2052774361, now seen corresponding path program 4 times [2024-11-09 07:46:12,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:46:12,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801968666] [2024-11-09 07:46:12,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:46:12,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:46:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:46:13,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-09 07:46:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:46:13,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-09 07:46:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:46:13,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-09 07:46:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:46:13,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-09 07:46:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:46:13,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-09 07:46:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:46:14,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-09 07:46:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:46:14,205 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 341 proven. 91 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2024-11-09 07:46:14,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:46:14,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801968666] [2024-11-09 07:46:14,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801968666] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:46:14,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786669148] [2024-11-09 07:46:14,206 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 07:46:14,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:46:14,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:46:14,209 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) [2024-11-09 07:46:14,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 07:46:14,641 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 07:46:14,641 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:46:14,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-09 07:46:14,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:46:15,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 07:46:16,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 07:46:16,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 07:46:16,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-09 07:46:16,505 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 173 proven. 366 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-09 07:46:16,505 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:46:17,930 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 234 proven. 10 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2024-11-09 07:46:17,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786669148] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:46:17,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:46:17,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 30, 14] total 64 [2024-11-09 07:46:17,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465431545] [2024-11-09 07:46:17,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:46:17,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-09 07:46:17,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:46:17,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-09 07:46:17,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=3797, Unknown=0, NotChecked=0, Total=4032 [2024-11-09 07:46:17,934 INFO L87 Difference]: Start difference. First operand 236 states and 256 transitions. Second operand has 64 states, 63 states have (on average 1.746031746031746) internal successors, (110), 58 states have internal predecessors, (110), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (11), 7 states have call predecessors, (11), 3 states have call successors, (11)