./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.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 1c32e831c11e67575bf9fc4420a056c0795572e7218bcd99a0067a1a2caea6f7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 14:54:38,062 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 14:54:38,145 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 14:54:38,149 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 14:54:38,150 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 14:54:38,170 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 14:54:38,171 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 14:54:38,171 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 14:54:38,172 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 14:54:38,172 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 14:54:38,173 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 14:54:38,173 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 14:54:38,174 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 14:54:38,174 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 14:54:38,174 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 14:54:38,175 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 14:54:38,175 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 14:54:38,176 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 14:54:38,176 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 14:54:38,176 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 14:54:38,178 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 14:54:38,181 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 14:54:38,181 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 14:54:38,181 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 14:54:38,181 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 14:54:38,182 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 14:54:38,182 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 14:54:38,182 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 14:54:38,183 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 14:54:38,183 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 14:54:38,183 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 14:54:38,183 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 14:54:38,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:54:38,184 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 14:54:38,184 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 14:54:38,184 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 14:54:38,185 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 14:54:38,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 14:54:38,185 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 14:54:38,185 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 14:54:38,186 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 14:54:38,186 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 14:54:38,186 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c32e831c11e67575bf9fc4420a056c0795572e7218bcd99a0067a1a2caea6f7 [2024-10-24 14:54:38,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 14:54:38,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 14:54:38,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 14:54:38,469 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 14:54:38,470 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 14:54:38,471 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i [2024-10-24 14:54:39,941 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 14:54:40,232 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 14:54:40,233 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i [2024-10-24 14:54:40,256 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/135334a12/deabf35e7fab47f582b149126d4727e7/FLAGf1eee8b9d [2024-10-24 14:54:40,506 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/135334a12/deabf35e7fab47f582b149126d4727e7 [2024-10-24 14:54:40,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 14:54:40,510 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 14:54:40,511 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 14:54:40,512 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 14:54:40,517 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 14:54:40,518 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:54:40" (1/1) ... [2024-10-24 14:54:40,521 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6868496f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:54:40, skipping insertion in model container [2024-10-24 14:54:40,521 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:54:40" (1/1) ... [2024-10-24 14:54:40,586 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 14:54:41,065 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i[33022,33035] [2024-10-24 14:54:41,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:54:41,272 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 14:54:41,314 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i[33022,33035] [2024-10-24 14:54:41,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:54:41,445 INFO L204 MainTranslator]: Completed translation [2024-10-24 14:54:41,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:54:41 WrapperNode [2024-10-24 14:54:41,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 14:54:41,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 14:54:41,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 14:54:41,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 14:54:41,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:54:41" (1/1) ... [2024-10-24 14:54:41,499 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:54:41" (1/1) ... [2024-10-24 14:54:41,617 INFO L138 Inliner]: procedures = 177, calls = 506, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3410 [2024-10-24 14:54:41,618 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 14:54:41,619 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 14:54:41,619 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 14:54:41,619 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 14:54:41,630 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:54:41" (1/1) ... [2024-10-24 14:54:41,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:54:41" (1/1) ... [2024-10-24 14:54:41,656 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:54:41" (1/1) ... [2024-10-24 14:54:41,808 INFO L175 MemorySlicer]: Split 480 memory accesses to 3 slices as follows [2, 106, 372]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 86 writes are split as follows [0, 4, 82]. [2024-10-24 14:54:41,808 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:54:41" (1/1) ... [2024-10-24 14:54:41,809 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:54:41" (1/1) ... [2024-10-24 14:54:41,871 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:54:41" (1/1) ... [2024-10-24 14:54:41,910 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:54:41" (1/1) ... [2024-10-24 14:54:41,922 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:54:41" (1/1) ... [2024-10-24 14:54:41,995 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:54:41" (1/1) ... [2024-10-24 14:54:42,018 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 14:54:42,019 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 14:54:42,020 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 14:54:42,020 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 14:54:42,021 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:54:41" (1/1) ... [2024-10-24 14:54:42,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:54:42,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:54:42,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 14:54:42,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 14:54:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-10-24 14:54:42,116 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-10-24 14:54:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 14:54:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 14:54:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 14:54:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 14:54:42,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 14:54:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 14:54:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 14:54:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 14:54:42,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-24 14:54:42,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-24 14:54:42,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-24 14:54:42,117 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-24 14:54:42,117 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-24 14:54:42,117 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-24 14:54:42,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 14:54:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 14:54:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 14:54:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 14:54:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 14:54:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 14:54:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 14:54:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 14:54:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 14:54:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 14:54:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 14:54:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 14:54:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 14:54:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 14:54:42,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 14:54:42,469 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 14:54:42,471 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 14:54:45,081 INFO L? ?]: Removed 780 outVars from TransFormulas that were not future-live. [2024-10-24 14:54:45,082 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 14:54:45,141 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 14:54:45,142 INFO L314 CfgBuilder]: Removed 151 assume(true) statements. [2024-10-24 14:54:45,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:54:45 BoogieIcfgContainer [2024-10-24 14:54:45,142 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 14:54:45,144 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 14:54:45,144 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 14:54:45,149 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 14:54:45,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:54:40" (1/3) ... [2024-10-24 14:54:45,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18924a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:54:45, skipping insertion in model container [2024-10-24 14:54:45,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:54:41" (2/3) ... [2024-10-24 14:54:45,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18924a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:54:45, skipping insertion in model container [2024-10-24 14:54:45,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:54:45" (3/3) ... [2024-10-24 14:54:45,152 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test10-1.i [2024-10-24 14:54:45,168 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 14:54:45,169 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 14:54:45,255 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 14:54:45,260 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;@e5ed6c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 14:54:45,261 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 14:54:45,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 1025 states, 1006 states have (on average 1.6312127236580516) internal successors, (1641), 1011 states have internal predecessors, (1641), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-24 14:54:45,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-24 14:54:45,276 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:45,276 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:54:45,277 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:45,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:45,281 INFO L85 PathProgramCache]: Analyzing trace with hash 76532746, now seen corresponding path program 1 times [2024-10-24 14:54:45,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:45,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212681588] [2024-10-24 14:54:45,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:45,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:45,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:54:45,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:45,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212681588] [2024-10-24 14:54:45,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212681588] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:45,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:54:45,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:54:45,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545833147] [2024-10-24 14:54:45,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:45,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 14:54:45,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:45,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 14:54:45,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 14:54:45,514 INFO L87 Difference]: Start difference. First operand has 1025 states, 1006 states have (on average 1.6312127236580516) internal successors, (1641), 1011 states have internal predecessors, (1641), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:54:45,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:45,638 INFO L93 Difference]: Finished difference Result 2049 states and 3345 transitions. [2024-10-24 14:54:45,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 14:54:45,640 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-24 14:54:45,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:45,664 INFO L225 Difference]: With dead ends: 2049 [2024-10-24 14:54:45,664 INFO L226 Difference]: Without dead ends: 1023 [2024-10-24 14:54:45,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 14:54:45,678 INFO L432 NwaCegarLoop]: 1506 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:45,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1506 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:54:45,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2024-10-24 14:54:45,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1023. [2024-10-24 14:54:45,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1005 states have (on average 1.4736318407960198) internal successors, (1481), 1010 states have internal predecessors, (1481), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-24 14:54:45,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1508 transitions. [2024-10-24 14:54:45,786 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1508 transitions. Word has length 12 [2024-10-24 14:54:45,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:45,787 INFO L471 AbstractCegarLoop]: Abstraction has 1023 states and 1508 transitions. [2024-10-24 14:54:45,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:54:45,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1508 transitions. [2024-10-24 14:54:45,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-24 14:54:45,792 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:45,793 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] [2024-10-24 14:54:45,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 14:54:45,793 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:45,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:45,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1351663222, now seen corresponding path program 1 times [2024-10-24 14:54:45,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:45,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017008735] [2024-10-24 14:54:45,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:45,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:54:46,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:46,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017008735] [2024-10-24 14:54:46,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017008735] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:46,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:54:46,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 14:54:46,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661231677] [2024-10-24 14:54:46,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:46,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:54:46,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:46,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:54:46,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:54:46,308 INFO L87 Difference]: Start difference. First operand 1023 states and 1508 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:54:46,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:46,513 INFO L93 Difference]: Finished difference Result 2042 states and 3012 transitions. [2024-10-24 14:54:46,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:54:46,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-10-24 14:54:46,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:46,523 INFO L225 Difference]: With dead ends: 2042 [2024-10-24 14:54:46,524 INFO L226 Difference]: Without dead ends: 1409 [2024-10-24 14:54:46,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:54:46,527 INFO L432 NwaCegarLoop]: 1544 mSDtfsCounter, 548 mSDsluCounter, 2981 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 4525 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:46,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 4525 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:54:46,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2024-10-24 14:54:46,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1025. [2024-10-24 14:54:46,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 1007 states have (on average 1.4726911618669314) internal successors, (1483), 1012 states have internal predecessors, (1483), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-24 14:54:46,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1510 transitions. [2024-10-24 14:54:46,568 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1510 transitions. Word has length 67 [2024-10-24 14:54:46,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:46,569 INFO L471 AbstractCegarLoop]: Abstraction has 1025 states and 1510 transitions. [2024-10-24 14:54:46,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:54:46,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1510 transitions. [2024-10-24 14:54:46,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-24 14:54:46,577 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:46,578 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:54:46,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 14:54:46,578 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:46,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:46,579 INFO L85 PathProgramCache]: Analyzing trace with hash 24463117, now seen corresponding path program 1 times [2024-10-24 14:54:46,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:46,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434150461] [2024-10-24 14:54:46,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:46,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:47,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:54:47,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:47,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434150461] [2024-10-24 14:54:47,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434150461] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:47,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:54:47,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 14:54:47,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697244056] [2024-10-24 14:54:47,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:47,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:54:47,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:47,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:54:47,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:54:47,255 INFO L87 Difference]: Start difference. First operand 1025 states and 1510 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:54:47,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:47,442 INFO L93 Difference]: Finished difference Result 2431 states and 3576 transitions. [2024-10-24 14:54:47,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:54:47,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2024-10-24 14:54:47,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:47,450 INFO L225 Difference]: With dead ends: 2431 [2024-10-24 14:54:47,450 INFO L226 Difference]: Without dead ends: 1409 [2024-10-24 14:54:47,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:54:47,454 INFO L432 NwaCegarLoop]: 1501 mSDtfsCounter, 544 mSDsluCounter, 2938 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 4439 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:47,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 4439 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:54:47,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2024-10-24 14:54:47,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1028. [2024-10-24 14:54:47,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1010 states have (on average 1.4712871287128713) internal successors, (1486), 1015 states have internal predecessors, (1486), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-24 14:54:47,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1513 transitions. [2024-10-24 14:54:47,484 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1513 transitions. Word has length 144 [2024-10-24 14:54:47,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:47,484 INFO L471 AbstractCegarLoop]: Abstraction has 1028 states and 1513 transitions. [2024-10-24 14:54:47,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:54:47,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1513 transitions. [2024-10-24 14:54:47,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-10-24 14:54:47,490 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:47,491 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:54:47,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 14:54:47,491 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:47,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:47,492 INFO L85 PathProgramCache]: Analyzing trace with hash 532320615, now seen corresponding path program 1 times [2024-10-24 14:54:47,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:47,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677674772] [2024-10-24 14:54:47,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:47,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:47,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:54:47,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:47,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677674772] [2024-10-24 14:54:47,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677674772] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:47,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:54:47,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:54:47,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083862094] [2024-10-24 14:54:47,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:47,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:54:47,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:47,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:54:47,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:54:47,960 INFO L87 Difference]: Start difference. First operand 1028 states and 1513 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:54:48,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:48,090 INFO L93 Difference]: Finished difference Result 2008 states and 2954 transitions. [2024-10-24 14:54:48,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 14:54:48,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-10-24 14:54:48,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:48,096 INFO L225 Difference]: With dead ends: 2008 [2024-10-24 14:54:48,096 INFO L226 Difference]: Without dead ends: 986 [2024-10-24 14:54:48,100 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 [2024-10-24 14:54:48,101 INFO L432 NwaCegarLoop]: 1403 mSDtfsCounter, 30 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 4192 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:48,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 4192 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:54:48,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2024-10-24 14:54:48,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 986. [2024-10-24 14:54:48,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 968 states have (on average 1.4555785123966942) internal successors, (1409), 973 states have internal predecessors, (1409), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-24 14:54:48,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1436 transitions. [2024-10-24 14:54:48,126 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1436 transitions. Word has length 215 [2024-10-24 14:54:48,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:48,126 INFO L471 AbstractCegarLoop]: Abstraction has 986 states and 1436 transitions. [2024-10-24 14:54:48,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:54:48,128 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1436 transitions. [2024-10-24 14:54:48,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-10-24 14:54:48,131 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:48,132 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:54:48,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 14:54:48,132 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:48,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:48,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1783554395, now seen corresponding path program 1 times [2024-10-24 14:54:48,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:48,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684648392] [2024-10-24 14:54:48,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:48,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:48,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:54:48,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:48,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684648392] [2024-10-24 14:54:48,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684648392] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:48,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:54:48,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:54:48,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213170135] [2024-10-24 14:54:48,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:48,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 14:54:48,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:48,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 14:54:48,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 14:54:48,408 INFO L87 Difference]: Start difference. First operand 986 states and 1436 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:54:48,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:48,516 INFO L93 Difference]: Finished difference Result 2497 states and 3649 transitions. [2024-10-24 14:54:48,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 14:54:48,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-10-24 14:54:48,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:48,523 INFO L225 Difference]: With dead ends: 2497 [2024-10-24 14:54:48,523 INFO L226 Difference]: Without dead ends: 1517 [2024-10-24 14:54:48,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 14:54:48,527 INFO L432 NwaCegarLoop]: 1420 mSDtfsCounter, 716 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 2823 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:48,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 2823 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:54:48,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2024-10-24 14:54:48,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1358. [2024-10-24 14:54:48,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1338 states have (on average 1.4581464872944694) internal successors, (1951), 1343 states have internal predecessors, (1951), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-24 14:54:48,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1982 transitions. [2024-10-24 14:54:48,566 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1982 transitions. Word has length 215 [2024-10-24 14:54:48,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:48,567 INFO L471 AbstractCegarLoop]: Abstraction has 1358 states and 1982 transitions. [2024-10-24 14:54:48,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:54:48,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1982 transitions. [2024-10-24 14:54:48,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-10-24 14:54:48,570 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:48,571 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:54:48,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 14:54:48,571 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:48,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:48,572 INFO L85 PathProgramCache]: Analyzing trace with hash 707293014, now seen corresponding path program 1 times [2024-10-24 14:54:48,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:48,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276484649] [2024-10-24 14:54:48,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:48,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:49,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:54:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:49,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:54:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:49,078 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:54:49,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:49,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276484649] [2024-10-24 14:54:49,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276484649] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:49,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:54:49,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 14:54:49,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197812901] [2024-10-24 14:54:49,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:49,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 14:54:49,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:49,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 14:54:49,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:54:49,082 INFO L87 Difference]: Start difference. First operand 1358 states and 1982 transitions. Second operand has 5 states, 5 states have (on average 44.0) internal successors, (220), 4 states have internal predecessors, (220), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:49,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:49,598 INFO L93 Difference]: Finished difference Result 2585 states and 3784 transitions. [2024-10-24 14:54:49,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:54:49,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 4 states have internal predecessors, (220), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 228 [2024-10-24 14:54:49,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:49,605 INFO L225 Difference]: With dead ends: 2585 [2024-10-24 14:54:49,605 INFO L226 Difference]: Without dead ends: 1318 [2024-10-24 14:54:49,608 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 [2024-10-24 14:54:49,609 INFO L432 NwaCegarLoop]: 1297 mSDtfsCounter, 51 mSDsluCounter, 3741 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 5038 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:49,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 5038 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:54:49,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2024-10-24 14:54:49,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1316. [2024-10-24 14:54:49,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 1296 states have (on average 1.4459876543209877) internal successors, (1874), 1301 states have internal predecessors, (1874), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-24 14:54:49,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1905 transitions. [2024-10-24 14:54:49,640 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1905 transitions. Word has length 228 [2024-10-24 14:54:49,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:49,641 INFO L471 AbstractCegarLoop]: Abstraction has 1316 states and 1905 transitions. [2024-10-24 14:54:49,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 4 states have internal predecessors, (220), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:49,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1905 transitions. [2024-10-24 14:54:49,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-10-24 14:54:49,644 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:49,644 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:54:49,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 14:54:49,644 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:49,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:49,645 INFO L85 PathProgramCache]: Analyzing trace with hash 331486050, now seen corresponding path program 1 times [2024-10-24 14:54:49,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:49,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791553604] [2024-10-24 14:54:49,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:49,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:49,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:54:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:49,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:54:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:49,975 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:54:49,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:49,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791553604] [2024-10-24 14:54:49,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791553604] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:49,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:54:49,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:54:49,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031636660] [2024-10-24 14:54:49,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:49,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:54:49,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:49,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:54:49,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:54:49,978 INFO L87 Difference]: Start difference. First operand 1316 states and 1905 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:50,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:50,604 INFO L93 Difference]: Finished difference Result 2543 states and 3696 transitions. [2024-10-24 14:54:50,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:54:50,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 228 [2024-10-24 14:54:50,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:50,611 INFO L225 Difference]: With dead ends: 2543 [2024-10-24 14:54:50,611 INFO L226 Difference]: Without dead ends: 1318 [2024-10-24 14:54:50,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:54:50,615 INFO L432 NwaCegarLoop]: 1310 mSDtfsCounter, 22 mSDsluCounter, 2472 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3782 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:50,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3782 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 14:54:50,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2024-10-24 14:54:50,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1316. [2024-10-24 14:54:50,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 1296 states have (on average 1.4436728395061729) internal successors, (1871), 1301 states have internal predecessors, (1871), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-24 14:54:50,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1902 transitions. [2024-10-24 14:54:50,661 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1902 transitions. Word has length 228 [2024-10-24 14:54:50,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:50,662 INFO L471 AbstractCegarLoop]: Abstraction has 1316 states and 1902 transitions. [2024-10-24 14:54:50,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:50,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1902 transitions. [2024-10-24 14:54:50,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-10-24 14:54:50,666 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:50,667 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:54:50,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 14:54:50,667 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:50,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:50,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1395658912, now seen corresponding path program 1 times [2024-10-24 14:54:50,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:50,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117281796] [2024-10-24 14:54:50,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:50,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:50,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:54:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:50,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:54:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:50,996 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:54:50,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:50,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117281796] [2024-10-24 14:54:50,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117281796] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:50,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:54:50,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:54:50,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078337063] [2024-10-24 14:54:50,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:50,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:54:50,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:50,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:54:50,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:54:50,999 INFO L87 Difference]: Start difference. First operand 1316 states and 1902 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:51,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:51,472 INFO L93 Difference]: Finished difference Result 3114 states and 4524 transitions. [2024-10-24 14:54:51,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:54:51,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 228 [2024-10-24 14:54:51,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:51,481 INFO L225 Difference]: With dead ends: 3114 [2024-10-24 14:54:51,482 INFO L226 Difference]: Without dead ends: 1889 [2024-10-24 14:54:51,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:54:51,485 INFO L432 NwaCegarLoop]: 1539 mSDtfsCounter, 617 mSDsluCounter, 2698 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 4237 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:51,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 4237 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:54:51,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2024-10-24 14:54:51,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1882. [2024-10-24 14:54:51,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1856 states have (on average 1.4455818965517242) internal successors, (2683), 1861 states have internal predecessors, (2683), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-24 14:54:51,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 2726 transitions. [2024-10-24 14:54:51,529 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 2726 transitions. Word has length 228 [2024-10-24 14:54:51,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:51,530 INFO L471 AbstractCegarLoop]: Abstraction has 1882 states and 2726 transitions. [2024-10-24 14:54:51,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:54:51,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 2726 transitions. [2024-10-24 14:54:51,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-10-24 14:54:51,533 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:51,533 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:54:51,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 14:54:51,534 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:51,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:51,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1828790174, now seen corresponding path program 1 times [2024-10-24 14:54:51,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:51,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453769356] [2024-10-24 14:54:51,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:51,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:51,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:54:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:51,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:54:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:51,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:54:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:51,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:54:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:51,965 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:54:51,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:51,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453769356] [2024-10-24 14:54:51,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453769356] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:51,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:54:51,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 14:54:51,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765288001] [2024-10-24 14:54:51,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:51,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 14:54:51,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:51,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 14:54:51,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:54:51,968 INFO L87 Difference]: Start difference. First operand 1882 states and 2726 transitions. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 5 states have internal predecessors, (225), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-24 14:54:53,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:53,237 INFO L93 Difference]: Finished difference Result 4067 states and 5941 transitions. [2024-10-24 14:54:53,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:54:53,237 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 5 states have internal predecessors, (225), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 241 [2024-10-24 14:54:53,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:53,247 INFO L225 Difference]: With dead ends: 4067 [2024-10-24 14:54:53,247 INFO L226 Difference]: Without dead ends: 2422 [2024-10-24 14:54:53,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:54:53,251 INFO L432 NwaCegarLoop]: 1354 mSDtfsCounter, 5658 mSDsluCounter, 2644 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5669 SdHoareTripleChecker+Valid, 3998 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:53,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5669 Valid, 3998 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-24 14:54:53,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2024-10-24 14:54:53,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 1453. [2024-10-24 14:54:53,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1432 states have (on average 1.4301675977653632) internal successors, (2048), 1437 states have internal predecessors, (2048), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-24 14:54:53,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 2081 transitions. [2024-10-24 14:54:53,314 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 2081 transitions. Word has length 241 [2024-10-24 14:54:53,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:53,316 INFO L471 AbstractCegarLoop]: Abstraction has 1453 states and 2081 transitions. [2024-10-24 14:54:53,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 5 states have internal predecessors, (225), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-24 14:54:53,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 2081 transitions. [2024-10-24 14:54:53,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-10-24 14:54:53,320 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:53,320 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:54:53,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 14:54:53,321 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:53,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:53,321 INFO L85 PathProgramCache]: Analyzing trace with hash -997020238, now seen corresponding path program 1 times [2024-10-24 14:54:53,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:53,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570165207] [2024-10-24 14:54:53,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:53,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:53,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:54:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:53,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:54:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:53,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:54:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:53,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:54:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-24 14:54:53,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:53,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570165207] [2024-10-24 14:54:53,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570165207] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:53,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:54:53,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 14:54:53,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375714322] [2024-10-24 14:54:53,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:53,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 14:54:53,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:53,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 14:54:53,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:54:53,824 INFO L87 Difference]: Start difference. First operand 1453 states and 2081 transitions. Second operand has 5 states, 5 states have (on average 46.8) internal successors, (234), 4 states have internal predecessors, (234), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:54:54,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:54,337 INFO L93 Difference]: Finished difference Result 2329 states and 3389 transitions. [2024-10-24 14:54:54,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:54:54,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.8) internal successors, (234), 4 states have internal predecessors, (234), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 251 [2024-10-24 14:54:54,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:54,345 INFO L225 Difference]: With dead ends: 2329 [2024-10-24 14:54:54,346 INFO L226 Difference]: Without dead ends: 1413 [2024-10-24 14:54:54,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:54:54,348 INFO L432 NwaCegarLoop]: 1211 mSDtfsCounter, 51 mSDsluCounter, 3484 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4695 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:54,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4695 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:54:54,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2024-10-24 14:54:54,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1411. [2024-10-24 14:54:54,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1390 states have (on average 1.4179856115107914) internal successors, (1971), 1395 states have internal predecessors, (1971), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-24 14:54:54,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 2004 transitions. [2024-10-24 14:54:54,390 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 2004 transitions. Word has length 251 [2024-10-24 14:54:54,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:54,390 INFO L471 AbstractCegarLoop]: Abstraction has 1411 states and 2004 transitions. [2024-10-24 14:54:54,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.8) internal successors, (234), 4 states have internal predecessors, (234), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:54:54,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 2004 transitions. [2024-10-24 14:54:54,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-10-24 14:54:54,393 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:54,394 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:54:54,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 14:54:54,394 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:54,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:54,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1775352732, now seen corresponding path program 1 times [2024-10-24 14:54:54,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:54,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326496445] [2024-10-24 14:54:54,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:54,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:54,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:54:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:54,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:54:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:54,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:54:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:54,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:54:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:54,815 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-24 14:54:54,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:54,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326496445] [2024-10-24 14:54:54,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326496445] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:54,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:54:54,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:54:54,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209421473] [2024-10-24 14:54:54,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:54,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:54:54,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:54,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:54:54,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:54:54,818 INFO L87 Difference]: Start difference. First operand 1411 states and 2004 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:54:55,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:55,352 INFO L93 Difference]: Finished difference Result 2262 states and 3272 transitions. [2024-10-24 14:54:55,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:54:55,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 251 [2024-10-24 14:54:55,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:55,359 INFO L225 Difference]: With dead ends: 2262 [2024-10-24 14:54:55,359 INFO L226 Difference]: Without dead ends: 1413 [2024-10-24 14:54:55,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:54:55,362 INFO L432 NwaCegarLoop]: 1225 mSDtfsCounter, 22 mSDsluCounter, 2299 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3524 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:55,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3524 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:54:55,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2024-10-24 14:54:55,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1411. [2024-10-24 14:54:55,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1390 states have (on average 1.4158273381294963) internal successors, (1968), 1395 states have internal predecessors, (1968), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-24 14:54:55,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 2001 transitions. [2024-10-24 14:54:55,409 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 2001 transitions. Word has length 251 [2024-10-24 14:54:55,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:55,409 INFO L471 AbstractCegarLoop]: Abstraction has 1411 states and 2001 transitions. [2024-10-24 14:54:55,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:54:55,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 2001 transitions. [2024-10-24 14:54:55,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-10-24 14:54:55,413 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:55,413 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:54:55,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 14:54:55,414 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:54:55,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:54:55,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1061532776, now seen corresponding path program 1 times [2024-10-24 14:54:55,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:54:55,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402089020] [2024-10-24 14:54:55,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:55,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:54:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:56,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:54:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:56,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:54:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:56,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:54:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:56,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:54:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:56,624 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:54:56,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:54:56,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402089020] [2024-10-24 14:54:56,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402089020] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:54:56,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861000184] [2024-10-24 14:54:56,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:54:56,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:54:56,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:54:56,626 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:54:56,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 14:54:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:54:57,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 14:54:57,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:54:57,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-24 14:54:57,835 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 15 treesize of output 7 [2024-10-24 14:54:57,851 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:54:57,851 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:54:57,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861000184] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:54:57,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:54:57,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-10-24 14:54:57,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196857325] [2024-10-24 14:54:57,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:54:57,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:54:57,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:54:57,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:54:57,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-10-24 14:54:57,854 INFO L87 Difference]: Start difference. First operand 1411 states and 2001 transitions. Second operand has 7 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:54:59,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:54:59,840 INFO L93 Difference]: Finished difference Result 2612 states and 3719 transitions. [2024-10-24 14:54:59,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:54:59,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 251 [2024-10-24 14:54:59,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:54:59,850 INFO L225 Difference]: With dead ends: 2612 [2024-10-24 14:54:59,850 INFO L226 Difference]: Without dead ends: 1734 [2024-10-24 14:54:59,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 246 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-10-24 14:54:59,853 INFO L432 NwaCegarLoop]: 1194 mSDtfsCounter, 1269 mSDsluCounter, 3939 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 5133 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-24 14:54:59,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 5133 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-24 14:54:59,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2024-10-24 14:54:59,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1580. [2024-10-24 14:54:59,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1549 states have (on average 1.4067140090380892) internal successors, (2179), 1558 states have internal predecessors, (2179), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (23), 17 states have call predecessors, (23), 23 states have call successors, (23) [2024-10-24 14:54:59,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2226 transitions. [2024-10-24 14:54:59,907 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2226 transitions. Word has length 251 [2024-10-24 14:54:59,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:54:59,907 INFO L471 AbstractCegarLoop]: Abstraction has 1580 states and 2226 transitions. [2024-10-24 14:54:59,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:54:59,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2226 transitions. [2024-10-24 14:54:59,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2024-10-24 14:54:59,913 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:54:59,913 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2024-10-24 14:54:59,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 14:55:00,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-24 14:55:00,115 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:55:00,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:55:00,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1167541261, now seen corresponding path program 1 times [2024-10-24 14:55:00,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:55:00,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554099011] [2024-10-24 14:55:00,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:55:00,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:55:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:01,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:55:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:01,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:55:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:01,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:55:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:01,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:55:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:01,708 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 74 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:55:01,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:55:01,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554099011] [2024-10-24 14:55:01,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554099011] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:55:01,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660574778] [2024-10-24 14:55:01,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:55:01,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:55:01,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:55:01,712 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:55:01,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 14:55:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:02,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 14:55:02,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:55:02,501 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 15 treesize of output 1 [2024-10-24 14:55:02,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-24 14:55:02,896 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 15 treesize of output 7 [2024-10-24 14:55:02,904 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 74 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:55:02,904 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:55:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 74 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:55:03,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660574778] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:55:03,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:55:03,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2024-10-24 14:55:03,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553819234] [2024-10-24 14:55:03,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:55:03,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 14:55:03,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:55:03,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 14:55:03,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-10-24 14:55:03,243 INFO L87 Difference]: Start difference. First operand 1580 states and 2226 transitions. Second operand has 13 states, 13 states have (on average 37.23076923076923) internal successors, (484), 12 states have internal predecessors, (484), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-24 14:55:04,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:55:04,252 INFO L93 Difference]: Finished difference Result 3873 states and 5428 transitions. [2024-10-24 14:55:04,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 14:55:04,253 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 37.23076923076923) internal successors, (484), 12 states have internal predecessors, (484), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 328 [2024-10-24 14:55:04,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:55:04,264 INFO L225 Difference]: With dead ends: 3873 [2024-10-24 14:55:04,264 INFO L226 Difference]: Without dead ends: 2530 [2024-10-24 14:55:04,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 653 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-10-24 14:55:04,269 INFO L432 NwaCegarLoop]: 1199 mSDtfsCounter, 2134 mSDsluCounter, 7803 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 9002 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 14:55:04,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2172 Valid, 9002 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 14:55:04,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2024-10-24 14:55:04,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2236. [2024-10-24 14:55:04,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 2193 states have (on average 1.3812129502963977) internal successors, (3029), 2202 states have internal predecessors, (3029), 35 states have call successors, (35), 7 states have call predecessors, (35), 7 states have return successors, (34), 28 states have call predecessors, (34), 34 states have call successors, (34) [2024-10-24 14:55:04,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 3098 transitions. [2024-10-24 14:55:04,346 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 3098 transitions. Word has length 328 [2024-10-24 14:55:04,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:55:04,346 INFO L471 AbstractCegarLoop]: Abstraction has 2236 states and 3098 transitions. [2024-10-24 14:55:04,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.23076923076923) internal successors, (484), 12 states have internal predecessors, (484), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-24 14:55:04,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 3098 transitions. [2024-10-24 14:55:04,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2024-10-24 14:55:04,353 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:55:04,354 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:55:04,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 14:55:04,554 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,SelfDestructingSolverStorable12 [2024-10-24 14:55:04,555 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:55:04,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:55:04,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1402568228, now seen corresponding path program 1 times [2024-10-24 14:55:04,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:55:04,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026574806] [2024-10-24 14:55:04,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:55:04,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:55:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:11,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:55:11,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:11,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:55:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:11,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:55:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:11,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:55:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:11,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 296 proven. 896 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:55:11,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:55:11,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026574806] [2024-10-24 14:55:11,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026574806] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:55:11,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820641332] [2024-10-24 14:55:11,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:55:11,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:55:11,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:55:11,129 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) [2024-10-24 14:55:11,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 14:55:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:12,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 3764 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 14:55:12,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:55:12,499 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 15 treesize of output 1 [2024-10-24 14:55:12,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-24 14:55:13,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-24 14:55:13,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-24 14:55:13,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-24 14:55:13,422 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 15 treesize of output 7 [2024-10-24 14:55:13,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 296 proven. 896 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:55:13,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:55:14,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 296 proven. 896 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:55:14,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820641332] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:55:14,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:55:14,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 22 [2024-10-24 14:55:14,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085706688] [2024-10-24 14:55:14,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:55:14,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-24 14:55:14,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:55:14,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-24 14:55:14,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2024-10-24 14:55:14,235 INFO L87 Difference]: Start difference. First operand 2236 states and 3098 transitions. Second operand has 22 states, 22 states have (on average 62.63636363636363) internal successors, (1378), 21 states have internal predecessors, (1378), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-24 14:55:15,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:55:15,621 INFO L93 Difference]: Finished difference Result 5631 states and 7801 transitions. [2024-10-24 14:55:15,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-24 14:55:15,623 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 62.63636363636363) internal successors, (1378), 21 states have internal predecessors, (1378), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 772 [2024-10-24 14:55:15,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:55:15,647 INFO L225 Difference]: With dead ends: 5631 [2024-10-24 14:55:15,647 INFO L226 Difference]: Without dead ends: 4288 [2024-10-24 14:55:15,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1577 GetRequests, 1539 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=292, Invalid=764, Unknown=0, NotChecked=0, Total=1056 [2024-10-24 14:55:15,651 INFO L432 NwaCegarLoop]: 1199 mSDtfsCounter, 6330 mSDsluCounter, 10054 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6416 SdHoareTripleChecker+Valid, 11253 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 14:55:15,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6416 Valid, 11253 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 14:55:15,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4288 states. [2024-10-24 14:55:15,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4288 to 3994. [2024-10-24 14:55:15,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3994 states, 3927 states have (on average 1.35650623885918) internal successors, (5327), 3936 states have internal predecessors, (5327), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2024-10-24 14:55:15,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3994 states to 3994 states and 5444 transitions. [2024-10-24 14:55:15,818 INFO L78 Accepts]: Start accepts. Automaton has 3994 states and 5444 transitions. Word has length 772 [2024-10-24 14:55:15,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:55:15,820 INFO L471 AbstractCegarLoop]: Abstraction has 3994 states and 5444 transitions. [2024-10-24 14:55:15,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 62.63636363636363) internal successors, (1378), 21 states have internal predecessors, (1378), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-24 14:55:15,821 INFO L276 IsEmpty]: Start isEmpty. Operand 3994 states and 5444 transitions. [2024-10-24 14:55:15,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1661 [2024-10-24 14:55:15,859 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:55:15,860 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:55:15,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 14:55:16,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:55:16,062 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:55:16,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:55:16,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1259807738, now seen corresponding path program 2 times [2024-10-24 14:55:16,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:55:16,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675176698] [2024-10-24 14:55:16,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:55:16,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:55:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:23,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:55:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:23,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:55:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:23,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:55:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:23,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:55:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:23,412 INFO L134 CoverageAnalysis]: Checked inductivity of 7432 backedges. 2015 proven. 76 refuted. 0 times theorem prover too weak. 5341 trivial. 0 not checked. [2024-10-24 14:55:23,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:55:23,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675176698] [2024-10-24 14:55:23,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675176698] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:55:23,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76759396] [2024-10-24 14:55:23,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 14:55:23,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:55:23,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:55:23,415 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) [2024-10-24 14:55:23,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 14:55:24,683 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 14:55:24,683 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 14:55:24,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-24 14:55:24,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:55:24,765 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 [2024-10-24 14:55:25,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7432 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7432 trivial. 0 not checked. [2024-10-24 14:55:25,499 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:55:25,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76759396] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:55:25,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:55:25,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-10-24 14:55:25,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361265988] [2024-10-24 14:55:25,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:55:25,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:55:25,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:55:25,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:55:25,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-10-24 14:55:25,504 INFO L87 Difference]: Start difference. First operand 3994 states and 5444 transitions. Second operand has 10 states, 10 states have (on average 24.1) internal successors, (241), 10 states have internal predecessors, (241), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:55:26,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:55:26,547 INFO L93 Difference]: Finished difference Result 4854 states and 6721 transitions. [2024-10-24 14:55:26,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:55:26,548 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.1) internal successors, (241), 10 states have internal predecessors, (241), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1660 [2024-10-24 14:55:26,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:55:26,570 INFO L225 Difference]: With dead ends: 4854 [2024-10-24 14:55:26,570 INFO L226 Difference]: Without dead ends: 4000 [2024-10-24 14:55:26,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1685 GetRequests, 1662 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2024-10-24 14:55:26,575 INFO L432 NwaCegarLoop]: 1230 mSDtfsCounter, 395 mSDsluCounter, 7597 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 8827 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 14:55:26,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 8827 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 14:55:26,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4000 states. [2024-10-24 14:55:26,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4000 to 3997. [2024-10-24 14:55:26,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3997 states, 3930 states have (on average 1.356234096692112) internal successors, (5330), 3939 states have internal predecessors, (5330), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2024-10-24 14:55:26,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 5447 transitions. [2024-10-24 14:55:26,679 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 5447 transitions. Word has length 1660 [2024-10-24 14:55:26,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:55:26,682 INFO L471 AbstractCegarLoop]: Abstraction has 3997 states and 5447 transitions. [2024-10-24 14:55:26,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.1) internal successors, (241), 10 states have internal predecessors, (241), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:55:26,682 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 5447 transitions. [2024-10-24 14:55:26,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1661 [2024-10-24 14:55:26,703 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:55:26,703 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:55:26,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 14:55:26,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-24 14:55:26,905 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:55:26,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:55:26,906 INFO L85 PathProgramCache]: Analyzing trace with hash 837281266, now seen corresponding path program 1 times [2024-10-24 14:55:26,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:55:26,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790524520] [2024-10-24 14:55:26,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:55:26,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:55:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:29,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:55:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:29,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:55:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:29,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:55:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:29,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:55:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:29,057 INFO L134 CoverageAnalysis]: Checked inductivity of 7432 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7432 trivial. 0 not checked. [2024-10-24 14:55:29,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:55:29,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790524520] [2024-10-24 14:55:29,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790524520] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:55:29,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:55:29,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 14:55:29,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868666766] [2024-10-24 14:55:29,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:55:29,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 14:55:29,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:55:29,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 14:55:29,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:55:29,060 INFO L87 Difference]: Start difference. First operand 3997 states and 5447 transitions. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 4 states have internal predecessors, (241), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:55:29,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:55:29,562 INFO L93 Difference]: Finished difference Result 4860 states and 6771 transitions. [2024-10-24 14:55:29,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:55:29,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 4 states have internal predecessors, (241), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1660 [2024-10-24 14:55:29,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:55:29,573 INFO L225 Difference]: With dead ends: 4860 [2024-10-24 14:55:29,574 INFO L226 Difference]: Without dead ends: 3994 [2024-10-24 14:55:29,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:55:29,578 INFO L432 NwaCegarLoop]: 1210 mSDtfsCounter, 30 mSDsluCounter, 3480 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 4690 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:55:29,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 4690 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:55:29,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2024-10-24 14:55:29,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3988. [2024-10-24 14:55:29,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3988 states, 3921 states have (on average 1.3565416985462893) internal successors, (5319), 3930 states have internal predecessors, (5319), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2024-10-24 14:55:29,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3988 states to 3988 states and 5436 transitions. [2024-10-24 14:55:29,684 INFO L78 Accepts]: Start accepts. Automaton has 3988 states and 5436 transitions. Word has length 1660 [2024-10-24 14:55:29,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:55:29,687 INFO L471 AbstractCegarLoop]: Abstraction has 3988 states and 5436 transitions. [2024-10-24 14:55:29,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 4 states have internal predecessors, (241), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:55:29,687 INFO L276 IsEmpty]: Start isEmpty. Operand 3988 states and 5436 transitions. [2024-10-24 14:55:29,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1662 [2024-10-24 14:55:29,708 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:55:29,708 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:55:29,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 14:55:29,709 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:55:29,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:55:29,709 INFO L85 PathProgramCache]: Analyzing trace with hash 118155250, now seen corresponding path program 1 times [2024-10-24 14:55:29,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:55:29,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169410112] [2024-10-24 14:55:29,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:55:29,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:55:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:37,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:55:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:37,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:55:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:37,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:55:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:37,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:55:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 7432 backedges. 2015 proven. 76 refuted. 0 times theorem prover too weak. 5341 trivial. 0 not checked. [2024-10-24 14:55:37,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:55:37,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169410112] [2024-10-24 14:55:37,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169410112] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:55:37,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489999894] [2024-10-24 14:55:37,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:55:37,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:55:37,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:55:37,157 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) [2024-10-24 14:55:37,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 14:55:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:55:39,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 8007 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-24 14:55:39,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:55:40,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-24 14:55:40,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-24 14:55:40,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-24 14:55:40,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-24 14:55:40,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-24 14:55:40,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-24 14:55:41,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-24 14:55:41,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-24 14:55:41,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-24 14:55:41,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-24 14:55:41,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-24 14:55:41,811 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 15 treesize of output 7 [2024-10-24 14:55:41,837 INFO L134 CoverageAnalysis]: Checked inductivity of 7432 backedges. 42 proven. 7372 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:55:41,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:55:43,811 INFO L134 CoverageAnalysis]: Checked inductivity of 7432 backedges. 42 proven. 7372 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:55:43,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489999894] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:55:43,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:55:43,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17, 16] total 35 [2024-10-24 14:55:43,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080701217] [2024-10-24 14:55:43,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:55:43,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-24 14:55:43,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:55:43,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-24 14:55:43,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=801, Unknown=0, NotChecked=0, Total=1190 [2024-10-24 14:55:43,820 INFO L87 Difference]: Start difference. First operand 3988 states and 5436 transitions. Second operand has 35 states, 35 states have (on average 96.8) internal successors, (3388), 34 states have internal predecessors, (3388), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12)