./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-1.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 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 06:09:48,656 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:09:48,714 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 06:09:48,719 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:09:48,719 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:09:48,746 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:09:48,747 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:09:48,748 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:09:48,748 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 06:09:48,749 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 06:09:48,750 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:09:48,750 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:09:48,750 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 06:09:48,752 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 06:09:48,752 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 06:09:48,752 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:09:48,753 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:09:48,753 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:09:48,753 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:09:48,753 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:09:48,754 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:09:48,757 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:09:48,757 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:09:48,757 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:09:48,757 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:09:48,757 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:09:48,758 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:09:48,758 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:09:48,758 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:09:48,758 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 06:09:48,758 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:09:48,759 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:09:48,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 06:09:48,759 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:09:48,759 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:09:48,759 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:09:48,759 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 06:09:48,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:09:48,760 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:09:48,760 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 06:09:48,760 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 06:09:48,761 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:09:48,761 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f [2024-11-09 06:09:49,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:09:49,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:09:49,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:09:49,081 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:09:49,081 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:09:49,082 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-1.i [2024-11-09 06:09:50,477 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:09:50,802 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:09:50,803 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-1.i [2024-11-09 06:09:50,826 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3517d0215/a4c0b566f08e49719c36d9dc4bf6303d/FLAG97a2d2550 [2024-11-09 06:09:51,074 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3517d0215/a4c0b566f08e49719c36d9dc4bf6303d [2024-11-09 06:09:51,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:09:51,079 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:09:51,080 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:09:51,082 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:09:51,087 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:09:51,088 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:09:51" (1/1) ... [2024-11-09 06:09:51,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@101e42d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:51, skipping insertion in model container [2024-11-09 06:09:51,089 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:09:51" (1/1) ... [2024-11-09 06:09:51,145 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:09:51,503 WARN L250 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_FNV_nondet_test3-1.i[33519,33532] [2024-11-09 06:09:51,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:09:51,642 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:09:51,690 WARN L250 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_FNV_nondet_test3-1.i[33519,33532] [2024-11-09 06:09:51,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:09:51,777 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:09:51,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:51 WrapperNode [2024-11-09 06:09:51,778 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:09:51,779 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:09:51,779 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:09:51,779 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:09:51,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:51" (1/1) ... [2024-11-09 06:09:51,810 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:51" (1/1) ... [2024-11-09 06:09:51,880 INFO L138 Inliner]: procedures = 177, calls = 273, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1431 [2024-11-09 06:09:51,882 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:09:51,883 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:09:51,883 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:09:51,883 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:09:51,899 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:51" (1/1) ... [2024-11-09 06:09:51,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:51" (1/1) ... [2024-11-09 06:09:51,920 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:51" (1/1) ... [2024-11-09 06:09:51,990 INFO L175 MemorySlicer]: Split 254 memory accesses to 3 slices as follows [2, 218, 34]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 50, 4]. [2024-11-09 06:09:51,990 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:51" (1/1) ... [2024-11-09 06:09:51,991 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:51" (1/1) ... [2024-11-09 06:09:52,028 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:51" (1/1) ... [2024-11-09 06:09:52,044 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:51" (1/1) ... [2024-11-09 06:09:52,050 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:51" (1/1) ... [2024-11-09 06:09:52,057 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:51" (1/1) ... [2024-11-09 06:09:52,068 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:09:52,069 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:09:52,070 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:09:52,070 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:09:52,070 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:51" (1/1) ... [2024-11-09 06:09:52,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 06:09:52,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:09:52,113 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 06:09:52,122 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 06:09:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 06:09:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 06:09:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 06:09:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 06:09:52,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 06:09:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 06:09:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 06:09:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 06:09:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-09 06:09:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-09 06:09:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-09 06:09:52,175 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-09 06:09:52,175 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-09 06:09:52,175 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-09 06:09:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 06:09:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:09:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-09 06:09:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-09 06:09:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-09 06:09:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 06:09:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-09 06:09:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-09 06:09:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-09 06:09:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:09:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 06:09:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 06:09:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 06:09:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:09:52,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:09:52,413 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:09:52,415 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:09:53,805 INFO L? ?]: Removed 313 outVars from TransFormulas that were not future-live. [2024-11-09 06:09:53,806 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:09:53,837 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:09:53,838 INFO L316 CfgBuilder]: Removed 63 assume(true) statements. [2024-11-09 06:09:53,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:09:53 BoogieIcfgContainer [2024-11-09 06:09:53,842 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:09:53,844 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:09:53,844 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:09:53,851 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:09:53,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:09:51" (1/3) ... [2024-11-09 06:09:53,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68518fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:09:53, skipping insertion in model container [2024-11-09 06:09:53,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:51" (2/3) ... [2024-11-09 06:09:53,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68518fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:09:53, skipping insertion in model container [2024-11-09 06:09:53,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:09:53" (3/3) ... [2024-11-09 06:09:53,855 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test3-1.i [2024-11-09 06:09:53,874 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:09:53,874 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:09:53,981 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:09:53,996 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;@26704645, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:09:53,996 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 06:09:54,005 INFO L276 IsEmpty]: Start isEmpty. Operand has 402 states, 393 states have (on average 1.6208651399491094) internal successors, (637), 395 states have internal predecessors, (637), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 06:09:54,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 06:09:54,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:09:54,017 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:09:54,018 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:09:54,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:09:54,026 INFO L85 PathProgramCache]: Analyzing trace with hash 513351899, now seen corresponding path program 1 times [2024-11-09 06:09:54,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:09:54,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176707131] [2024-11-09 06:09:54,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:09:54,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:09:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:54,236 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 06:09:54,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:09:54,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176707131] [2024-11-09 06:09:54,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176707131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:09:54,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:09:54,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:09:54,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490603179] [2024-11-09 06:09:54,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:09:54,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 06:09:54,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:09:54,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 06:09:54,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 06:09:54,269 INFO L87 Difference]: Start difference. First operand has 402 states, 393 states have (on average 1.6208651399491094) internal successors, (637), 395 states have internal predecessors, (637), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 06:09:54,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:09:54,320 INFO L93 Difference]: Finished difference Result 801 states and 1292 transitions. [2024-11-09 06:09:54,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 06:09:54,323 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 12 [2024-11-09 06:09:54,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:09:54,341 INFO L225 Difference]: With dead ends: 801 [2024-11-09 06:09:54,341 INFO L226 Difference]: Without dead ends: 398 [2024-11-09 06:09:54,346 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 06:09:54,350 INFO L432 NwaCegarLoop]: 579 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, 579 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 06:09:54,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:09:54,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-11-09 06:09:54,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2024-11-09 06:09:54,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 390 states have (on average 1.4461538461538461) internal successors, (564), 391 states have internal predecessors, (564), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 06:09:54,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 574 transitions. [2024-11-09 06:09:54,415 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 574 transitions. Word has length 12 [2024-11-09 06:09:54,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:09:54,415 INFO L471 AbstractCegarLoop]: Abstraction has 398 states and 574 transitions. [2024-11-09 06:09:54,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 06:09:54,418 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 574 transitions. [2024-11-09 06:09:54,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 06:09:54,419 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:09:54,419 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:09:54,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:09:54,420 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:09:54,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:09:54,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1021376642, now seen corresponding path program 1 times [2024-11-09 06:09:54,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:09:54,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660354742] [2024-11-09 06:09:54,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:09:54,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:09:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:54,641 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 06:09:54,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:09:54,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660354742] [2024-11-09 06:09:54,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660354742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:09:54,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:09:54,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:09:54,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766209086] [2024-11-09 06:09:54,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:09:54,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:09:54,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:09:54,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:09:54,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:09:54,649 INFO L87 Difference]: Start difference. First operand 398 states and 574 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 06:09:54,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:09:54,943 INFO L93 Difference]: Finished difference Result 1089 states and 1589 transitions. [2024-11-09 06:09:54,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:09:54,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 14 [2024-11-09 06:09:54,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:09:54,950 INFO L225 Difference]: With dead ends: 1089 [2024-11-09 06:09:54,950 INFO L226 Difference]: Without dead ends: 692 [2024-11-09 06:09:54,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:09:54,953 INFO L432 NwaCegarLoop]: 563 mSDtfsCounter, 430 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:09:54,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1642 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:09:54,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2024-11-09 06:09:54,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 691. [2024-11-09 06:09:54,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 682 states have (on average 1.466275659824047) internal successors, (1000), 684 states have internal predecessors, (1000), 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 06:09:55,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2024-11-09 06:09:55,002 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 14 [2024-11-09 06:09:55,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:09:55,003 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2024-11-09 06:09:55,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 06:09:55,003 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2024-11-09 06:09:55,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 06:09:55,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:09:55,008 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] [2024-11-09 06:09:55,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:09:55,009 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:09:55,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:09:55,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1303678867, now seen corresponding path program 1 times [2024-11-09 06:09:55,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:09:55,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073361385] [2024-11-09 06:09:55,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:09:55,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:09:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:55,252 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 06:09:55,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:09:55,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073361385] [2024-11-09 06:09:55,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073361385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:09:55,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:09:55,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:09:55,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104792284] [2024-11-09 06:09:55,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:09:55,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:09:55,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:09:55,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:09:55,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:09:55,254 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 06:09:55,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:09:55,346 INFO L93 Difference]: Finished difference Result 963 states and 1402 transitions. [2024-11-09 06:09:55,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:09:55,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 68 [2024-11-09 06:09:55,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:09:55,350 INFO L225 Difference]: With dead ends: 963 [2024-11-09 06:09:55,350 INFO L226 Difference]: Without dead ends: 607 [2024-11-09 06:09:55,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 06:09:55,352 INFO L432 NwaCegarLoop]: 472 mSDtfsCounter, 30 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:09:55,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1397 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:09:55,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2024-11-09 06:09:55,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2024-11-09 06:09:55,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 598 states have (on average 1.414715719063545) internal successors, (846), 600 states have internal predecessors, (846), 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 06:09:55,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 858 transitions. [2024-11-09 06:09:55,387 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 858 transitions. Word has length 68 [2024-11-09 06:09:55,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:09:55,388 INFO L471 AbstractCegarLoop]: Abstraction has 607 states and 858 transitions. [2024-11-09 06:09:55,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 06:09:55,389 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 858 transitions. [2024-11-09 06:09:55,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 06:09:55,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:09:55,395 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] [2024-11-09 06:09:55,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 06:09:55,395 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:09:55,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:09:55,398 INFO L85 PathProgramCache]: Analyzing trace with hash 748783519, now seen corresponding path program 1 times [2024-11-09 06:09:55,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:09:55,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844751372] [2024-11-09 06:09:55,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:09:55,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:09:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:55,966 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 06:09:55,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:09:55,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844751372] [2024-11-09 06:09:55,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844751372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:09:55,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:09:55,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:09:55,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702392049] [2024-11-09 06:09:55,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:09:55,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:09:55,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:09:55,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:09:55,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:09:55,969 INFO L87 Difference]: Start difference. First operand 607 states and 858 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 06:09:56,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:09:56,160 INFO L93 Difference]: Finished difference Result 1122 states and 1555 transitions. [2024-11-09 06:09:56,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:09:56,161 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 68 [2024-11-09 06:09:56,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:09:56,164 INFO L225 Difference]: With dead ends: 1122 [2024-11-09 06:09:56,164 INFO L226 Difference]: Without dead ends: 847 [2024-11-09 06:09:56,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:09:56,169 INFO L432 NwaCegarLoop]: 522 mSDtfsCounter, 465 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 3004 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:09:56,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 3004 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:09:56,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2024-11-09 06:09:56,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 606. [2024-11-09 06:09:56,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 597 states have (on average 1.4137353433835846) internal successors, (844), 599 states have internal predecessors, (844), 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 06:09:56,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 856 transitions. [2024-11-09 06:09:56,192 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 856 transitions. Word has length 68 [2024-11-09 06:09:56,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:09:56,192 INFO L471 AbstractCegarLoop]: Abstraction has 606 states and 856 transitions. [2024-11-09 06:09:56,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 06:09:56,193 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 856 transitions. [2024-11-09 06:09:56,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-09 06:09:56,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:09:56,196 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1] [2024-11-09 06:09:56,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 06:09:56,197 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:09:56,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:09:56,197 INFO L85 PathProgramCache]: Analyzing trace with hash -695894400, now seen corresponding path program 1 times [2024-11-09 06:09:56,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:09:56,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453401685] [2024-11-09 06:09:56,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:09:56,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:09:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:56,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-09 06:09:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:56,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-09 06:09:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:56,472 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:09:56,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:09:56,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453401685] [2024-11-09 06:09:56,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453401685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:09:56,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:09:56,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:09:56,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947213358] [2024-11-09 06:09:56,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:09:56,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:09:56,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:09:56,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:09:56,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:09:56,476 INFO L87 Difference]: Start difference. First operand 606 states and 856 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:09:56,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:09:56,722 INFO L93 Difference]: Finished difference Result 1121 states and 1576 transitions. [2024-11-09 06:09:56,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:09:56,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105 [2024-11-09 06:09:56,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:09:56,726 INFO L225 Difference]: With dead ends: 1121 [2024-11-09 06:09:56,727 INFO L226 Difference]: Without dead ends: 525 [2024-11-09 06:09:56,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:09:56,728 INFO L432 NwaCegarLoop]: 383 mSDtfsCounter, 38 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:09:56,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1432 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:09:56,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2024-11-09 06:09:56,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 522. [2024-11-09 06:09:56,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 513 states have (on average 1.345029239766082) internal successors, (690), 515 states have internal predecessors, (690), 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 06:09:56,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 702 transitions. [2024-11-09 06:09:56,740 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 702 transitions. Word has length 105 [2024-11-09 06:09:56,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:09:56,740 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 702 transitions. [2024-11-09 06:09:56,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:09:56,741 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 702 transitions. [2024-11-09 06:09:56,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-09 06:09:56,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:09:56,742 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1] [2024-11-09 06:09:56,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 06:09:56,742 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:09:56,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:09:56,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2147218036, now seen corresponding path program 1 times [2024-11-09 06:09:56,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:09:56,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912031348] [2024-11-09 06:09:56,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:09:56,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:09:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:56,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-09 06:09:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:56,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-09 06:09:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:56,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:09:56,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:09:56,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912031348] [2024-11-09 06:09:56,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912031348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:09:56,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:09:56,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:09:56,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813056167] [2024-11-09 06:09:56,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:09:56,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:09:56,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:09:56,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:09:56,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:09:56,977 INFO L87 Difference]: Start difference. First operand 522 states and 702 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:09:57,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:09:57,172 INFO L93 Difference]: Finished difference Result 1012 states and 1371 transitions. [2024-11-09 06:09:57,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:09:57,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105 [2024-11-09 06:09:57,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:09:57,175 INFO L225 Difference]: With dead ends: 1012 [2024-11-09 06:09:57,175 INFO L226 Difference]: Without dead ends: 525 [2024-11-09 06:09:57,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:09:57,176 INFO L432 NwaCegarLoop]: 396 mSDtfsCounter, 8 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:09:57,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1090 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:09:57,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2024-11-09 06:09:57,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 522. [2024-11-09 06:09:57,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 513 states have (on average 1.3333333333333333) internal successors, (684), 515 states have internal predecessors, (684), 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 06:09:57,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 696 transitions. [2024-11-09 06:09:57,189 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 696 transitions. Word has length 105 [2024-11-09 06:09:57,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:09:57,189 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 696 transitions. [2024-11-09 06:09:57,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:09:57,190 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 696 transitions. [2024-11-09 06:09:57,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-09 06:09:57,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:09:57,191 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1] [2024-11-09 06:09:57,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 06:09:57,191 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:09:57,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:09:57,191 INFO L85 PathProgramCache]: Analyzing trace with hash -236175478, now seen corresponding path program 1 times [2024-11-09 06:09:57,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:09:57,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211349370] [2024-11-09 06:09:57,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:09:57,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:09:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:57,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-09 06:09:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:57,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-09 06:09:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:57,713 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:09:57,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:09:57,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211349370] [2024-11-09 06:09:57,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211349370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:09:57,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182218337] [2024-11-09 06:09:57,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:09:57,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:09:57,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:09:57,716 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 06:09:57,717 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 06:09:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:57,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 06:09:58,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:09:58,045 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 11 treesize of output 7 [2024-11-09 06:09:58,067 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 7 treesize of output 3 [2024-11-09 06:09:58,274 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:09:58,274 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:09:58,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182218337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:09:58,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:09:58,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 9 [2024-11-09 06:09:58,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888590502] [2024-11-09 06:09:58,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:09:58,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:09:58,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:09:58,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:09:58,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:09:58,278 INFO L87 Difference]: Start difference. First operand 522 states and 696 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:09:58,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:09:58,449 INFO L93 Difference]: Finished difference Result 1196 states and 1608 transitions. [2024-11-09 06:09:58,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:09:58,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 105 [2024-11-09 06:09:58,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:09:58,453 INFO L225 Difference]: With dead ends: 1196 [2024-11-09 06:09:58,453 INFO L226 Difference]: Without dead ends: 766 [2024-11-09 06:09:58,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-09 06:09:58,457 INFO L432 NwaCegarLoop]: 393 mSDtfsCounter, 1022 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:09:58,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 1967 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:09:58,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2024-11-09 06:09:58,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 525. [2024-11-09 06:09:58,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 515 states have (on average 1.3339805825242719) internal successors, (687), 518 states have internal predecessors, (687), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 06:09:58,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 700 transitions. [2024-11-09 06:09:58,481 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 700 transitions. Word has length 105 [2024-11-09 06:09:58,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:09:58,482 INFO L471 AbstractCegarLoop]: Abstraction has 525 states and 700 transitions. [2024-11-09 06:09:58,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:09:58,483 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 700 transitions. [2024-11-09 06:09:58,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-09 06:09:58,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:09:58,484 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1] [2024-11-09 06:09:58,503 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 06:09:58,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:09:58,689 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:09:58,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:09:58,690 INFO L85 PathProgramCache]: Analyzing trace with hash 200009000, now seen corresponding path program 1 times [2024-11-09 06:09:58,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:09:58,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201822284] [2024-11-09 06:09:58,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:09:58,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:09:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:59,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-09 06:09:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:59,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-09 06:09:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:59,297 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:09:59,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:09:59,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201822284] [2024-11-09 06:09:59,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201822284] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:09:59,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871297195] [2024-11-09 06:09:59,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:09:59,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:09:59,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:09:59,305 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 06:09:59,311 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 06:09:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:59,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 06:09:59,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:09:59,710 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 11 treesize of output 7 [2024-11-09 06:09:59,740 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 16 treesize of output 17 [2024-11-09 06:10:00,282 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:10:00,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 41 [2024-11-09 06:10:00,500 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 06:10:00,500 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:10:00,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871297195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:10:00,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:10:00,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2024-11-09 06:10:00,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453773879] [2024-11-09 06:10:00,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:10:00,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:10:00,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:10:00,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:10:00,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-11-09 06:10:00,506 INFO L87 Difference]: Start difference. First operand 525 states and 700 transitions. Second operand has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:10:09,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:10:13,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:10:17,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:10:21,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:10:25,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:10:29,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:10:33,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:10:37,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:10:42,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:10:45,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:10:45,976 INFO L93 Difference]: Finished difference Result 1248 states and 1681 transitions. [2024-11-09 06:10:45,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 06:10:45,977 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 107 [2024-11-09 06:10:45,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:10:45,980 INFO L225 Difference]: With dead ends: 1248 [2024-11-09 06:10:45,980 INFO L226 Difference]: Without dead ends: 768 [2024-11-09 06:10:45,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=94, Invalid=411, Unknown=1, NotChecked=0, Total=506 [2024-11-09 06:10:45,982 INFO L432 NwaCegarLoop]: 387 mSDtfsCounter, 498 mSDsluCounter, 2176 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 5 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 2563 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:10:45,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 2563 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 737 Invalid, 9 Unknown, 0 Unchecked, 39.7s Time] [2024-11-09 06:10:45,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2024-11-09 06:10:45,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 525. [2024-11-09 06:10:46,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 515 states have (on average 1.3320388349514563) internal successors, (686), 518 states have internal predecessors, (686), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 06:10:46,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 699 transitions. [2024-11-09 06:10:46,003 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 699 transitions. Word has length 107 [2024-11-09 06:10:46,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:10:46,003 INFO L471 AbstractCegarLoop]: Abstraction has 525 states and 699 transitions. [2024-11-09 06:10:46,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:10:46,004 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 699 transitions. [2024-11-09 06:10:46,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-09 06:10:46,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:10:46,005 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1] [2024-11-09 06:10:46,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 06:10:46,206 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,SelfDestructingSolverStorable7 [2024-11-09 06:10:46,207 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:10:46,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:10:46,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1557865811, now seen corresponding path program 1 times [2024-11-09 06:10:46,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:10:46,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123327293] [2024-11-09 06:10:46,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:46,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:10:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:52,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-09 06:10:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:52,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-09 06:10:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:52,841 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:10:52,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:10:52,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123327293] [2024-11-09 06:10:52,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123327293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:10:52,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436720794] [2024-11-09 06:10:52,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:52,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:10:52,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:10:52,844 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 06:10:52,845 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 06:10:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:53,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 06:10:53,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:10:53,172 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 11 treesize of output 7 [2024-11-09 06:10:53,224 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 7 treesize of output 3 [2024-11-09 06:10:53,769 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 11 treesize of output 7 [2024-11-09 06:10:53,895 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 06:10:53,895 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:10:54,711 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 06:10:54,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436720794] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:10:54,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:10:54,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [21, 7] total 28 [2024-11-09 06:10:54,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018851800] [2024-11-09 06:10:54,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:10:54,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:10:54,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:10:54,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:10:54,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2024-11-09 06:10:54,714 INFO L87 Difference]: Start difference. First operand 525 states and 699 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:10:55,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:10:55,000 INFO L93 Difference]: Finished difference Result 710 states and 949 transitions. [2024-11-09 06:10:55,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:10:55,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 108 [2024-11-09 06:10:55,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:10:55,008 INFO L225 Difference]: With dead ends: 710 [2024-11-09 06:10:55,008 INFO L226 Difference]: Without dead ends: 699 [2024-11-09 06:10:55,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=78, Invalid=734, Unknown=0, NotChecked=0, Total=812 [2024-11-09 06:10:55,010 INFO L432 NwaCegarLoop]: 399 mSDtfsCounter, 483 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:10:55,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 1198 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:10:55,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2024-11-09 06:10:55,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 527. [2024-11-09 06:10:55,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 517 states have (on average 1.3307543520309477) internal successors, (688), 520 states have internal predecessors, (688), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 06:10:55,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 701 transitions. [2024-11-09 06:10:55,035 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 701 transitions. Word has length 108 [2024-11-09 06:10:55,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:10:55,037 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 701 transitions. [2024-11-09 06:10:55,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:10:55,037 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 701 transitions. [2024-11-09 06:10:55,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-09 06:10:55,041 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:10:55,041 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:10:55,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 06:10:55,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:10:55,246 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:10:55,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:10:55,246 INFO L85 PathProgramCache]: Analyzing trace with hash -955106422, now seen corresponding path program 1 times [2024-11-09 06:10:55,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:10:55,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818413413] [2024-11-09 06:10:55,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:55,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:10:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:55,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-09 06:10:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:55,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-09 06:10:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:55,475 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 06:10:55,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:10:55,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818413413] [2024-11-09 06:10:55,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818413413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:10:55,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:10:55,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:10:55,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535589853] [2024-11-09 06:10:55,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:10:55,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:10:55,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:10:55,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:10:55,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:10:55,479 INFO L87 Difference]: Start difference. First operand 527 states and 701 transitions. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:10:56,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:10:56,504 INFO L93 Difference]: Finished difference Result 1308 states and 1756 transitions. [2024-11-09 06:10:56,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:10:56,505 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 162 [2024-11-09 06:10:56,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:10:56,512 INFO L225 Difference]: With dead ends: 1308 [2024-11-09 06:10:56,513 INFO L226 Difference]: Without dead ends: 873 [2024-11-09 06:10:56,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:10:56,514 INFO L432 NwaCegarLoop]: 496 mSDtfsCounter, 1116 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:10:56,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1121 Valid, 1844 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 06:10:56,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2024-11-09 06:10:56,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 667. [2024-11-09 06:10:56,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 656 states have (on average 1.336890243902439) internal successors, (877), 660 states have internal predecessors, (877), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-09 06:10:56,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 892 transitions. [2024-11-09 06:10:56,535 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 892 transitions. Word has length 162 [2024-11-09 06:10:56,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:10:56,535 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 892 transitions. [2024-11-09 06:10:56,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:10:56,536 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 892 transitions. [2024-11-09 06:10:56,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-09 06:10:56,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:10:56,537 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:10:56,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 06:10:56,538 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:10:56,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:10:56,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1094218870, now seen corresponding path program 1 times [2024-11-09 06:10:56,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:10:56,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578898508] [2024-11-09 06:10:56,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:56,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:10:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:57,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-09 06:10:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:57,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-09 06:10:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:57,251 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:10:57,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:10:57,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578898508] [2024-11-09 06:10:57,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578898508] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:10:57,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135828204] [2024-11-09 06:10:57,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:57,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:10:57,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:10:57,254 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 06:10:57,255 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 06:10:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:57,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 06:10:57,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:10:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 06:10:57,699 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:10:57,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135828204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:10:57,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:10:57,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-09 06:10:57,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485895191] [2024-11-09 06:10:57,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:10:57,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:10:57,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:10:57,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:10:57,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:10:57,701 INFO L87 Difference]: Start difference. First operand 667 states and 892 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:10:57,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:10:57,954 INFO L93 Difference]: Finished difference Result 1289 states and 1736 transitions. [2024-11-09 06:10:57,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:10:57,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 172 [2024-11-09 06:10:57,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:10:57,957 INFO L225 Difference]: With dead ends: 1289 [2024-11-09 06:10:57,957 INFO L226 Difference]: Without dead ends: 667 [2024-11-09 06:10:57,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:10:57,959 INFO L432 NwaCegarLoop]: 398 mSDtfsCounter, 17 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:10:57,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1065 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:10:57,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2024-11-09 06:10:57,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2024-11-09 06:10:57,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 656 states have (on average 1.333841463414634) internal successors, (875), 660 states have internal predecessors, (875), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-09 06:10:57,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 890 transitions. [2024-11-09 06:10:57,981 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 890 transitions. Word has length 172 [2024-11-09 06:10:57,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:10:57,981 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 890 transitions. [2024-11-09 06:10:57,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:10:57,982 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 890 transitions. [2024-11-09 06:10:57,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-09 06:10:57,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:10:57,984 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:10:58,012 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 06:10:58,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:10:58,185 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:10:58,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:10:58,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1220737044, now seen corresponding path program 1 times [2024-11-09 06:10:58,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:10:58,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299082544] [2024-11-09 06:10:58,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:58,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:10:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:58,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-09 06:10:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:58,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-09 06:10:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:58,651 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 06:10:58,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:10:58,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299082544] [2024-11-09 06:10:58,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299082544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:10:58,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:10:58,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:10:58,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607441678] [2024-11-09 06:10:58,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:10:58,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:10:58,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:10:58,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:10:58,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:10:58,658 INFO L87 Difference]: Start difference. First operand 667 states and 890 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:10:59,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:10:59,647 INFO L93 Difference]: Finished difference Result 1292 states and 1738 transitions. [2024-11-09 06:10:59,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:10:59,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2024-11-09 06:10:59,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:10:59,650 INFO L225 Difference]: With dead ends: 1292 [2024-11-09 06:10:59,650 INFO L226 Difference]: Without dead ends: 673 [2024-11-09 06:10:59,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:10:59,654 INFO L432 NwaCegarLoop]: 391 mSDtfsCounter, 16 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:10:59,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1967 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 06:10:59,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2024-11-09 06:10:59,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 673. [2024-11-09 06:10:59,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 662 states have (on average 1.3308157099697886) internal successors, (881), 666 states have internal predecessors, (881), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-09 06:10:59,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 896 transitions. [2024-11-09 06:10:59,679 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 896 transitions. Word has length 173 [2024-11-09 06:10:59,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:10:59,679 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 896 transitions. [2024-11-09 06:10:59,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:10:59,680 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 896 transitions. [2024-11-09 06:10:59,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-09 06:10:59,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:10:59,681 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:10:59,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 06:10:59,681 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:10:59,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:10:59,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1688553233, now seen corresponding path program 1 times [2024-11-09 06:10:59,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:10:59,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876948451] [2024-11-09 06:10:59,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:59,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:10:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:00,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-09 06:11:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:00,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-09 06:11:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:00,121 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 06:11:00,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:11:00,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876948451] [2024-11-09 06:11:00,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876948451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:11:00,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:11:00,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 06:11:00,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072160605] [2024-11-09 06:11:00,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:11:00,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:11:00,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:11:00,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:11:00,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:11:00,124 INFO L87 Difference]: Start difference. First operand 673 states and 896 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:11:01,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:11:01,213 INFO L93 Difference]: Finished difference Result 1298 states and 1742 transitions. [2024-11-09 06:11:01,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:11:01,213 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2024-11-09 06:11:01,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:11:01,216 INFO L225 Difference]: With dead ends: 1298 [2024-11-09 06:11:01,216 INFO L226 Difference]: Without dead ends: 683 [2024-11-09 06:11:01,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:11:01,218 INFO L432 NwaCegarLoop]: 381 mSDtfsCounter, 20 mSDsluCounter, 1881 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:11:01,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2262 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 06:11:01,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2024-11-09 06:11:01,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 681. [2024-11-09 06:11:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 670 states have (on average 1.3298507462686566) internal successors, (891), 674 states have internal predecessors, (891), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-09 06:11:01,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 906 transitions. [2024-11-09 06:11:01,249 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 906 transitions. Word has length 174 [2024-11-09 06:11:01,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:11:01,250 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 906 transitions. [2024-11-09 06:11:01,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:11:01,250 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 906 transitions. [2024-11-09 06:11:01,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-09 06:11:01,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:11:01,252 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:01,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 06:11:01,252 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:11:01,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:11:01,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1490576941, now seen corresponding path program 1 times [2024-11-09 06:11:01,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:11:01,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048886260] [2024-11-09 06:11:01,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:11:01,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:11:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:01,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-09 06:11:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:02,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-09 06:11:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:02,072 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:11:02,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:11:02,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048886260] [2024-11-09 06:11:02,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048886260] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:11:02,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468641289] [2024-11-09 06:11:02,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:11:02,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:11:02,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:11:02,075 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 06:11:02,076 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 06:11:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:02,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-09 06:11:02,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:11:02,454 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 11 treesize of output 7 [2024-11-09 06:11:03,087 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:11:03,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 77 treesize of output 55 [2024-11-09 06:11:03,372 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 06:11:03,373 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:11:03,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468641289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:11:03,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:11:03,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2024-11-09 06:11:03,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911407177] [2024-11-09 06:11:03,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:11:03,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:11:03,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:11:03,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:11:03,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-09 06:11:03,375 INFO L87 Difference]: Start difference. First operand 681 states and 906 transitions. Second operand has 10 states, 10 states have (on average 16.4) internal successors, (164), 10 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:11:05,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:11:05,200 INFO L93 Difference]: Finished difference Result 1325 states and 1774 transitions. [2024-11-09 06:11:05,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 06:11:05,201 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.4) internal successors, (164), 10 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2024-11-09 06:11:05,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:11:05,205 INFO L225 Difference]: With dead ends: 1325 [2024-11-09 06:11:05,205 INFO L226 Difference]: Without dead ends: 913 [2024-11-09 06:11:05,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2024-11-09 06:11:05,206 INFO L432 NwaCegarLoop]: 449 mSDtfsCounter, 394 mSDsluCounter, 2574 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 3023 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:11:05,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 3023 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 06:11:05,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2024-11-09 06:11:05,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 716. [2024-11-09 06:11:05,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 705 states have (on average 1.3191489361702127) internal successors, (930), 709 states have internal predecessors, (930), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-09 06:11:05,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 945 transitions. [2024-11-09 06:11:05,232 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 945 transitions. Word has length 174 [2024-11-09 06:11:05,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:11:05,232 INFO L471 AbstractCegarLoop]: Abstraction has 716 states and 945 transitions. [2024-11-09 06:11:05,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.4) internal successors, (164), 10 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:11:05,232 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 945 transitions. [2024-11-09 06:11:05,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-09 06:11:05,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:11:05,235 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:05,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 06:11:05,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 06:11:05,440 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:11:05,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:11:05,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1619983637, now seen corresponding path program 1 times [2024-11-09 06:11:05,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:11:05,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822646141] [2024-11-09 06:11:05,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:11:05,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:11:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:05,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-09 06:11:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:06,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-09 06:11:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:06,190 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:11:06,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:11:06,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822646141] [2024-11-09 06:11:06,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822646141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:11:06,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029574637] [2024-11-09 06:11:06,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:11:06,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:11:06,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:11:06,196 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 06:11:06,200 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 06:11:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:06,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 06:11:06,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:11:06,748 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 06:11:06,748 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:11:06,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029574637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:11:06,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:11:06,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-09 06:11:06,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706011666] [2024-11-09 06:11:06,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:11:06,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:11:06,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:11:06,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:11:06,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:11:06,751 INFO L87 Difference]: Start difference. First operand 716 states and 945 transitions. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:11:07,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:11:07,306 INFO L93 Difference]: Finished difference Result 1128 states and 1505 transitions. [2024-11-09 06:11:07,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:11:07,307 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 175 [2024-11-09 06:11:07,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:11:07,310 INFO L225 Difference]: With dead ends: 1128 [2024-11-09 06:11:07,311 INFO L226 Difference]: Without dead ends: 716 [2024-11-09 06:11:07,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:11:07,316 INFO L432 NwaCegarLoop]: 388 mSDtfsCounter, 34 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:11:07,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1682 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:11:07,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2024-11-09 06:11:07,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2024-11-09 06:11:07,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 705 states have (on average 1.3148936170212766) internal successors, (927), 709 states have internal predecessors, (927), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-09 06:11:07,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 942 transitions. [2024-11-09 06:11:07,344 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 942 transitions. Word has length 175 [2024-11-09 06:11:07,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:11:07,344 INFO L471 AbstractCegarLoop]: Abstraction has 716 states and 942 transitions. [2024-11-09 06:11:07,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:11:07,345 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 942 transitions. [2024-11-09 06:11:07,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-09 06:11:07,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:11:07,348 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:07,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 06:11:07,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 06:11:07,550 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:11:07,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:11:07,550 INFO L85 PathProgramCache]: Analyzing trace with hash -116520018, now seen corresponding path program 1 times [2024-11-09 06:11:07,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:11:07,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134521413] [2024-11-09 06:11:07,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:11:07,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:11:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:08,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-09 06:11:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:08,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-09 06:11:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:08,113 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 06:11:08,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:11:08,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134521413] [2024-11-09 06:11:08,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134521413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:11:08,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:11:08,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:11:08,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826009131] [2024-11-09 06:11:08,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:11:08,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:11:08,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:11:08,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:11:08,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:11:08,120 INFO L87 Difference]: Start difference. First operand 716 states and 942 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 6 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:11:09,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:11:09,069 INFO L93 Difference]: Finished difference Result 1137 states and 1514 transitions. [2024-11-09 06:11:09,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:11:09,069 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 6 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 176 [2024-11-09 06:11:09,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:11:09,073 INFO L225 Difference]: With dead ends: 1137 [2024-11-09 06:11:09,074 INFO L226 Difference]: Without dead ends: 725 [2024-11-09 06:11:09,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:11:09,076 INFO L432 NwaCegarLoop]: 390 mSDtfsCounter, 16 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:11:09,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1961 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 06:11:09,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2024-11-09 06:11:09,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 725. [2024-11-09 06:11:09,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 714 states have (on average 1.3109243697478992) internal successors, (936), 718 states have internal predecessors, (936), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-09 06:11:09,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 951 transitions. [2024-11-09 06:11:09,113 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 951 transitions. Word has length 176 [2024-11-09 06:11:09,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:11:09,113 INFO L471 AbstractCegarLoop]: Abstraction has 725 states and 951 transitions. [2024-11-09 06:11:09,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 6 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:11:09,114 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 951 transitions. [2024-11-09 06:11:09,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-09 06:11:09,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:11:09,116 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:09,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 06:11:09,117 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:11:09,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:11:09,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1033799598, now seen corresponding path program 1 times [2024-11-09 06:11:09,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:11:09,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111196209] [2024-11-09 06:11:09,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:11:09,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:11:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:09,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-09 06:11:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:09,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-09 06:11:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:09,535 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 06:11:09,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:11:09,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111196209] [2024-11-09 06:11:09,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111196209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:11:09,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:11:09,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 06:11:09,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368205845] [2024-11-09 06:11:09,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:11:09,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:11:09,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:11:09,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:11:09,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:11:09,537 INFO L87 Difference]: Start difference. First operand 725 states and 951 transitions. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:11:10,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:11:10,521 INFO L93 Difference]: Finished difference Result 1161 states and 1541 transitions. [2024-11-09 06:11:10,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:11:10,521 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 177 [2024-11-09 06:11:10,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:11:10,524 INFO L225 Difference]: With dead ends: 1161 [2024-11-09 06:11:10,524 INFO L226 Difference]: Without dead ends: 740 [2024-11-09 06:11:10,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:11:10,526 INFO L432 NwaCegarLoop]: 380 mSDtfsCounter, 20 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:11:10,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2255 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 06:11:10,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2024-11-09 06:11:10,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 737. [2024-11-09 06:11:10,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 726 states have (on average 1.3099173553719008) internal successors, (951), 730 states have internal predecessors, (951), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-09 06:11:10,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 966 transitions. [2024-11-09 06:11:10,547 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 966 transitions. Word has length 177 [2024-11-09 06:11:10,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:11:10,548 INFO L471 AbstractCegarLoop]: Abstraction has 737 states and 966 transitions. [2024-11-09 06:11:10,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:11:10,548 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 966 transitions. [2024-11-09 06:11:10,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-09 06:11:10,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:11:10,549 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:10,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 06:11:10,550 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:11:10,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:11:10,550 INFO L85 PathProgramCache]: Analyzing trace with hash -2036306030, now seen corresponding path program 1 times [2024-11-09 06:11:10,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:11:10,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82818313] [2024-11-09 06:11:10,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:11:10,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:11:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:10,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-09 06:11:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:11,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-09 06:11:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:11,049 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:11:11,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:11:11,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82818313] [2024-11-09 06:11:11,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82818313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:11:11,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128310044] [2024-11-09 06:11:11,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:11:11,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:11:11,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:11:11,052 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 06:11:11,053 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 06:11:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:11,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 06:11:11,489 INFO L278 TraceCheckSpWp]: Computing forward predicates...