./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 14:57:41,961 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 14:57:42,017 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 14:57:42,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 14:57:42,024 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 14:57:42,048 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 14:57:42,048 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 14:57:42,049 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 14:57:42,049 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 14:57:42,051 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 14:57:42,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 14:57:42,051 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 14:57:42,052 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 14:57:42,053 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 14:57:42,053 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 14:57:42,053 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 14:57:42,054 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 14:57:42,054 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 14:57:42,054 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 14:57:42,054 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 14:57:42,055 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 14:57:42,055 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 14:57:42,057 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 14:57:42,057 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 14:57:42,057 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 14:57:42,057 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 14:57:42,057 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 14:57:42,057 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 14:57:42,057 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 14:57:42,058 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 14:57:42,058 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 14:57:42,058 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 14:57:42,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:57:42,058 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 14:57:42,058 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 14:57:42,059 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 14:57:42,059 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 14:57:42,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 14:57:42,059 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 14:57:42,059 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 14:57:42,059 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 14:57:42,061 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 14:57:42,061 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 [2024-10-24 14:57:42,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 14:57:42,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 14:57:42,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 14:57:42,306 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 14:57:42,306 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 14:57:42,307 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2024-10-24 14:57:43,634 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 14:57:43,875 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 14:57:43,875 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2024-10-24 14:57:43,895 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae56e0d9a/550bb62d97424d58915d9a99c45941cd/FLAG330928609 [2024-10-24 14:57:43,911 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae56e0d9a/550bb62d97424d58915d9a99c45941cd [2024-10-24 14:57:43,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 14:57:43,916 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 14:57:43,918 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 14:57:43,918 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 14:57:43,923 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 14:57:43,924 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:57:43" (1/1) ... [2024-10-24 14:57:43,924 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57500d38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:57:43, skipping insertion in model container [2024-10-24 14:57:43,925 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:57:43" (1/1) ... [2024-10-24 14:57:43,976 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 14:57:44,339 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i[33021,33034] [2024-10-24 14:57:44,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:57:44,432 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 14:57:44,459 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i[33021,33034] [2024-10-24 14:57:44,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:57:44,538 INFO L204 MainTranslator]: Completed translation [2024-10-24 14:57:44,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:57:44 WrapperNode [2024-10-24 14:57:44,539 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 14:57:44,540 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 14:57:44,540 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 14:57:44,540 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 14:57:44,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:57:44" (1/1) ... [2024-10-24 14:57:44,563 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:57:44" (1/1) ... [2024-10-24 14:57:44,610 INFO L138 Inliner]: procedures = 176, calls = 179, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 838 [2024-10-24 14:57:44,611 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 14:57:44,611 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 14:57:44,611 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 14:57:44,612 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 14:57:44,620 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:57:44" (1/1) ... [2024-10-24 14:57:44,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:57:44" (1/1) ... [2024-10-24 14:57:44,630 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:57:44" (1/1) ... [2024-10-24 14:57:44,667 INFO L175 MemorySlicer]: Split 158 memory accesses to 2 slices as follows [2, 156]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 42 writes are split as follows [0, 42]. [2024-10-24 14:57:44,668 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:57:44" (1/1) ... [2024-10-24 14:57:44,668 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:57:44" (1/1) ... [2024-10-24 14:57:44,691 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:57:44" (1/1) ... [2024-10-24 14:57:44,700 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:57:44" (1/1) ... [2024-10-24 14:57:44,708 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:57:44" (1/1) ... [2024-10-24 14:57:44,711 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:57:44" (1/1) ... [2024-10-24 14:57:44,723 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 14:57:44,724 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 14:57:44,724 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 14:57:44,724 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 14:57:44,725 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:57:44" (1/1) ... [2024-10-24 14:57:44,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:57:44,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:57:44,756 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) [2024-10-24 14:57:44,775 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 [2024-10-24 14:57:44,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 14:57:44,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 14:57:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 14:57:44,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 14:57:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 14:57:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 14:57:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-24 14:57:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-24 14:57:44,806 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-24 14:57:44,807 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-24 14:57:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 14:57:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 14:57:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 14:57:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 14:57:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 14:57:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 14:57:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 14:57:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 14:57:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 14:57:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 14:57:44,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 14:57:44,978 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 14:57:44,980 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 14:57:45,789 INFO L? ?]: Removed 208 outVars from TransFormulas that were not future-live. [2024-10-24 14:57:45,790 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 14:57:45,822 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 14:57:45,823 INFO L314 CfgBuilder]: Removed 31 assume(true) statements. [2024-10-24 14:57:45,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:57:45 BoogieIcfgContainer [2024-10-24 14:57:45,824 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 14:57:45,825 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 14:57:45,826 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 14:57:45,829 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 14:57:45,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:57:43" (1/3) ... [2024-10-24 14:57:45,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a52dab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:57:45, skipping insertion in model container [2024-10-24 14:57:45,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:57:44" (2/3) ... [2024-10-24 14:57:45,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a52dab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:57:45, skipping insertion in model container [2024-10-24 14:57:45,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:57:45" (3/3) ... [2024-10-24 14:57:45,831 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test1-1.i [2024-10-24 14:57:45,844 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 14:57:45,844 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 14:57:45,918 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 14:57:45,923 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@33d90f87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 14:57:45,923 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 14:57:45,929 INFO L276 IsEmpty]: Start isEmpty. Operand has 229 states, 212 states have (on average 1.6320754716981132) internal successors, (346), 223 states have internal predecessors, (346), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-24 14:57:45,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-24 14:57:45,935 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:57:45,935 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:57:45,936 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:57:45,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:57:45,939 INFO L85 PathProgramCache]: Analyzing trace with hash 2045494697, now seen corresponding path program 1 times [2024-10-24 14:57:45,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:57:45,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194355994] [2024-10-24 14:57:45,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:57:45,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:57:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:57:46,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:57:46,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:57:46,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194355994] [2024-10-24 14:57:46,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194355994] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:57:46,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:57:46,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:57:46,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476946204] [2024-10-24 14:57:46,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:57:46,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 14:57:46,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:57:46,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 14:57:46,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 14:57:46,208 INFO L87 Difference]: Start difference. First operand has 229 states, 212 states have (on average 1.6320754716981132) internal successors, (346), 223 states have internal predecessors, (346), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-24 14:57:46,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:57:46,259 INFO L93 Difference]: Finished difference Result 457 states and 753 transitions. [2024-10-24 14:57:46,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 14:57:46,261 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 9 [2024-10-24 14:57:46,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:57:46,269 INFO L225 Difference]: With dead ends: 457 [2024-10-24 14:57:46,270 INFO L226 Difference]: Without dead ends: 227 [2024-10-24 14:57:46,274 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 [2024-10-24 14:57:46,277 INFO L432 NwaCegarLoop]: 332 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:57:46,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 332 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:57:46,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-10-24 14:57:46,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2024-10-24 14:57:46,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 211 states have (on average 1.4597156398104265) internal successors, (308), 221 states have internal predecessors, (308), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-24 14:57:46,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 334 transitions. [2024-10-24 14:57:46,325 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 334 transitions. Word has length 9 [2024-10-24 14:57:46,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:57:46,325 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 334 transitions. [2024-10-24 14:57:46,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-24 14:57:46,326 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 334 transitions. [2024-10-24 14:57:46,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-24 14:57:46,326 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:57:46,327 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:57:46,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 14:57:46,327 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:57:46,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:57:46,328 INFO L85 PathProgramCache]: Analyzing trace with hash 980152680, now seen corresponding path program 1 times [2024-10-24 14:57:46,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:57:46,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108109508] [2024-10-24 14:57:46,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:57:46,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:57:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:57:46,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:57:46,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:57:46,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108109508] [2024-10-24 14:57:46,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108109508] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:57:46,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:57:46,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:57:46,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443407144] [2024-10-24 14:57:46,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:57:46,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 14:57:46,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:57:46,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 14:57:46,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 14:57:46,402 INFO L87 Difference]: Start difference. First operand 227 states and 334 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-24 14:57:46,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:57:46,450 INFO L93 Difference]: Finished difference Result 450 states and 664 transitions. [2024-10-24 14:57:46,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 14:57:46,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 9 [2024-10-24 14:57:46,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:57:46,453 INFO L225 Difference]: With dead ends: 450 [2024-10-24 14:57:46,456 INFO L226 Difference]: Without dead ends: 421 [2024-10-24 14:57:46,456 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 [2024-10-24 14:57:46,457 INFO L432 NwaCegarLoop]: 371 mSDtfsCounter, 274 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:57:46,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 698 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:57:46,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-10-24 14:57:46,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 228. [2024-10-24 14:57:46,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 212 states have (on average 1.4575471698113207) internal successors, (309), 222 states have internal predecessors, (309), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-24 14:57:46,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 335 transitions. [2024-10-24 14:57:46,476 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 335 transitions. Word has length 9 [2024-10-24 14:57:46,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:57:46,476 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 335 transitions. [2024-10-24 14:57:46,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-24 14:57:46,477 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 335 transitions. [2024-10-24 14:57:46,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-24 14:57:46,479 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:57:46,479 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:57:46,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 14:57:46,479 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:57:46,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:57:46,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1052513016, now seen corresponding path program 1 times [2024-10-24 14:57:46,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:57:46,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668810061] [2024-10-24 14:57:46,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:57:46,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:57:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:57:46,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:57:46,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:57:46,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668810061] [2024-10-24 14:57:46,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668810061] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:57:46,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:57:46,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:57:46,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769851665] [2024-10-24 14:57:46,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:57:46,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:57:46,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:57:46,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:57:46,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:57:46,773 INFO L87 Difference]: Start difference. First operand 228 states and 335 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-24 14:57:46,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:57:46,846 INFO L93 Difference]: Finished difference Result 457 states and 671 transitions. [2024-10-24 14:57:46,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:57:46,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 84 [2024-10-24 14:57:46,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:57:46,848 INFO L225 Difference]: With dead ends: 457 [2024-10-24 14:57:46,848 INFO L226 Difference]: Without dead ends: 231 [2024-10-24 14:57:46,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:57:46,850 INFO L432 NwaCegarLoop]: 303 mSDtfsCounter, 105 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:57:46,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 818 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:57:46,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-10-24 14:57:46,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2024-10-24 14:57:46,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 212 states have (on average 1.4245283018867925) internal successors, (302), 222 states have internal predecessors, (302), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-24 14:57:46,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 328 transitions. [2024-10-24 14:57:46,859 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 328 transitions. Word has length 84 [2024-10-24 14:57:46,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:57:46,859 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 328 transitions. [2024-10-24 14:57:46,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-24 14:57:46,859 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 328 transitions. [2024-10-24 14:57:46,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-24 14:57:46,861 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:57:46,861 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:57:46,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 14:57:46,862 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:57:46,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:57:46,862 INFO L85 PathProgramCache]: Analyzing trace with hash 2077015044, now seen corresponding path program 1 times [2024-10-24 14:57:46,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:57:46,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081002875] [2024-10-24 14:57:46,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:57:46,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:57:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:57:47,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:57:47,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:57:47,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081002875] [2024-10-24 14:57:47,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081002875] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:57:47,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:57:47,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:57:47,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215144480] [2024-10-24 14:57:47,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:57:47,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 14:57:47,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:57:47,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 14:57:47,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 14:57:47,163 INFO L87 Difference]: Start difference. First operand 228 states and 328 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2024-10-24 14:57:47,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:57:47,207 INFO L93 Difference]: Finished difference Result 583 states and 843 transitions. [2024-10-24 14:57:47,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 14:57:47,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 84 [2024-10-24 14:57:47,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:57:47,210 INFO L225 Difference]: With dead ends: 583 [2024-10-24 14:57:47,210 INFO L226 Difference]: Without dead ends: 357 [2024-10-24 14:57:47,210 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 [2024-10-24 14:57:47,213 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 134 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:57:47,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 639 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:57:47,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-10-24 14:57:47,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2024-10-24 14:57:47,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 341 states have (on average 1.436950146627566) internal successors, (490), 351 states have internal predecessors, (490), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-24 14:57:47,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 516 transitions. [2024-10-24 14:57:47,231 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 516 transitions. Word has length 84 [2024-10-24 14:57:47,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:57:47,231 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 516 transitions. [2024-10-24 14:57:47,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2024-10-24 14:57:47,232 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 516 transitions. [2024-10-24 14:57:47,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-24 14:57:47,234 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:57:47,234 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:57:47,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 14:57:47,235 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:57:47,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:57:47,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1086078165, now seen corresponding path program 1 times [2024-10-24 14:57:47,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:57:47,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799428453] [2024-10-24 14:57:47,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:57:47,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:57:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:57:47,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 14:57:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:57:47,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 14:57:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:57:47,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:57:47,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:57:47,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799428453] [2024-10-24 14:57:47,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799428453] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:57:47,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734311932] [2024-10-24 14:57:47,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:57:47,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:57:47,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:57:47,476 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) [2024-10-24 14:57:47,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 14:57:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:57:47,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 14:57:47,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:57:47,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:57:47,842 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:57:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:57:47,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734311932] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:57:47,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:57:47,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 7 [2024-10-24 14:57:47,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111915066] [2024-10-24 14:57:47,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:57:47,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:57:47,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:57:47,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:57:47,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:57:47,975 INFO L87 Difference]: Start difference. First operand 357 states and 516 transitions. Second operand has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 6 states have internal predecessors, (173), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-24 14:57:48,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:57:48,280 INFO L93 Difference]: Finished difference Result 839 states and 1212 transitions. [2024-10-24 14:57:48,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:57:48,281 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 6 states have internal predecessors, (173), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 97 [2024-10-24 14:57:48,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:57:48,284 INFO L225 Difference]: With dead ends: 839 [2024-10-24 14:57:48,285 INFO L226 Difference]: Without dead ends: 810 [2024-10-24 14:57:48,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:57:48,286 INFO L432 NwaCegarLoop]: 444 mSDtfsCounter, 1206 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:57:48,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1222 Valid, 1761 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:57:48,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2024-10-24 14:57:48,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 808. [2024-10-24 14:57:48,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 783 states have (on average 1.408684546615581) internal successors, (1103), 793 states have internal predecessors, (1103), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-24 14:57:48,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1147 transitions. [2024-10-24 14:57:48,311 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1147 transitions. Word has length 97 [2024-10-24 14:57:48,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:57:48,312 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1147 transitions. [2024-10-24 14:57:48,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 6 states have internal predecessors, (173), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-24 14:57:48,315 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1147 transitions. [2024-10-24 14:57:48,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-10-24 14:57:48,331 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:57:48,331 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:57:48,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 14:57:48,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:57:48,532 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:57:48,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:57:48,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1088896991, now seen corresponding path program 1 times [2024-10-24 14:57:48,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:57:48,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490454600] [2024-10-24 14:57:48,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:57:48,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:57:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:57:49,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 14:57:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:57:49,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 14:57:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:57:49,371 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:57:49,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:57:49,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490454600] [2024-10-24 14:57:49,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490454600] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:57:49,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76813988] [2024-10-24 14:57:49,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:57:49,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:57:49,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:57:49,374 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) [2024-10-24 14:57:49,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 14:57:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:57:49,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 1659 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 14:57:49,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:57:50,124 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:57:50,125 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:57:50,482 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:57:50,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76813988] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:57:50,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:57:50,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-10-24 14:57:50,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143738761] [2024-10-24 14:57:50,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:57:50,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 14:57:50,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:57:50,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 14:57:50,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2024-10-24 14:57:50,485 INFO L87 Difference]: Start difference. First operand 808 states and 1147 transitions. Second operand has 13 states, 13 states have (on average 47.92307692307692) internal successors, (623), 12 states have internal predecessors, (623), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-24 14:57:50,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:57:50,854 INFO L93 Difference]: Finished difference Result 2003 states and 2877 transitions. [2024-10-24 14:57:50,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 14:57:50,855 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 47.92307692307692) internal successors, (623), 12 states have internal predecessors, (623), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 322 [2024-10-24 14:57:50,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:57:50,862 INFO L225 Difference]: With dead ends: 2003 [2024-10-24 14:57:50,862 INFO L226 Difference]: Without dead ends: 1974 [2024-10-24 14:57:50,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 641 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2024-10-24 14:57:50,863 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 3448 mSDsluCounter, 2885 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3500 SdHoareTripleChecker+Valid, 3243 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:57:50,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3500 Valid, 3243 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:57:50,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2024-10-24 14:57:50,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1972. [2024-10-24 14:57:50,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1972 states, 1929 states have (on average 1.4053913945049248) internal successors, (2711), 1939 states have internal predecessors, (2711), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2024-10-24 14:57:50,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 2791 transitions. [2024-10-24 14:57:50,898 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 2791 transitions. Word has length 322 [2024-10-24 14:57:50,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:57:50,898 INFO L471 AbstractCegarLoop]: Abstraction has 1972 states and 2791 transitions. [2024-10-24 14:57:50,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 47.92307692307692) internal successors, (623), 12 states have internal predecessors, (623), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-24 14:57:50,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 2791 transitions. [2024-10-24 14:57:50,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2024-10-24 14:57:50,909 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:57:50,910 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:57:50,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 14:57:51,110 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,SelfDestructingSolverStorable5 [2024-10-24 14:57:51,111 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:57:51,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:57:51,112 INFO L85 PathProgramCache]: Analyzing trace with hash -41250463, now seen corresponding path program 2 times [2024-10-24 14:57:51,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:57:51,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152657366] [2024-10-24 14:57:51,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:57:51,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms