./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.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 b8fb715e20e93734f29581bef128b7f826b4b5933b157899cd0cb0d668434a9d --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 11:51:20,964 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 11:51:21,032 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 11:51:21,035 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 11:51:21,036 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 11:51:21,067 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 11:51:21,068 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 11:51:21,068 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 11:51:21,069 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 11:51:21,071 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 11:51:21,073 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 11:51:21,073 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 11:51:21,074 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 11:51:21,074 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 11:51:21,076 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 11:51:21,077 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 11:51:21,077 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 11:51:21,077 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 11:51:21,078 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 11:51:21,078 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 11:51:21,078 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 11:51:21,079 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 11:51:21,083 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 11:51:21,083 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 11:51:21,084 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 11:51:21,084 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 11:51:21,084 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 11:51:21,084 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 11:51:21,085 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 11:51:21,085 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 11:51:21,085 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 11:51:21,085 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 11:51:21,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 11:51:21,086 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 11:51:21,086 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 11:51:21,086 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 11:51:21,087 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 11:51:21,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 11:51:21,088 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 11:51:21,089 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 11:51:21,089 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 11:51:21,089 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 11:51:21,089 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8fb715e20e93734f29581bef128b7f826b4b5933b157899cd0cb0d668434a9d [2024-11-12 11:51:21,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 11:51:21,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 11:51:21,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 11:51:21,367 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 11:51:21,367 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 11:51:21,368 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i [2024-11-12 11:51:22,899 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 11:51:23,213 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 11:51:23,215 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i [2024-11-12 11:51:23,242 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ed0688b7/ba93bc8f4ff94fb2b54d2c2649b5523a/FLAGdb7e4fc17 [2024-11-12 11:51:23,481 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ed0688b7/ba93bc8f4ff94fb2b54d2c2649b5523a [2024-11-12 11:51:23,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 11:51:23,484 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 11:51:23,486 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 11:51:23,486 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 11:51:23,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 11:51:23,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:51:23" (1/1) ... [2024-11-12 11:51:23,491 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@475b6d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:23, skipping insertion in model container [2024-11-12 11:51:23,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:51:23" (1/1) ... [2024-11-12 11:51:23,544 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 11:51:23,927 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[33021,33034] [2024-11-12 11:51:24,048 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[45234,45247] [2024-11-12 11:51:24,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 11:51:24,073 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 11:51:24,114 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[33021,33034] [2024-11-12 11:51:24,178 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[45234,45247] [2024-11-12 11:51:24,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 11:51:24,237 INFO L204 MainTranslator]: Completed translation [2024-11-12 11:51:24,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:24 WrapperNode [2024-11-12 11:51:24,238 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 11:51:24,239 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 11:51:24,239 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 11:51:24,239 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 11:51:24,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:24" (1/1) ... [2024-11-12 11:51:24,291 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:24" (1/1) ... [2024-11-12 11:51:24,374 INFO L138 Inliner]: procedures = 177, calls = 340, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1589 [2024-11-12 11:51:24,374 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 11:51:24,375 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 11:51:24,375 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 11:51:24,375 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 11:51:24,386 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:24" (1/1) ... [2024-11-12 11:51:24,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:24" (1/1) ... [2024-11-12 11:51:24,404 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:24" (1/1) ... [2024-11-12 11:51:24,544 INFO L175 MemorySlicer]: Split 304 memory accesses to 3 slices as follows [2, 34, 268]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 4, 58]. [2024-11-12 11:51:24,544 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:24" (1/1) ... [2024-11-12 11:51:24,544 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:24" (1/1) ... [2024-11-12 11:51:24,621 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:24" (1/1) ... [2024-11-12 11:51:24,640 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:24" (1/1) ... [2024-11-12 11:51:24,652 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:24" (1/1) ... [2024-11-12 11:51:24,665 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:24" (1/1) ... [2024-11-12 11:51:24,683 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 11:51:24,684 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 11:51:24,684 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 11:51:24,684 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 11:51:24,685 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:24" (1/1) ... [2024-11-12 11:51:24,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 11:51:24,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:51:24,717 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 11:51:24,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 11:51:24,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 11:51:24,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 11:51:24,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 11:51:24,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-12 11:51:24,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-12 11:51:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 11:51:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 11:51:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 11:51:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-12 11:51:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-12 11:51:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-12 11:51:24,776 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-12 11:51:24,776 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-12 11:51:24,777 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-12 11:51:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2024-11-12 11:51:24,777 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2024-11-12 11:51:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 11:51:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 11:51:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-12 11:51:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-12 11:51:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-12 11:51:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-12 11:51:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-12 11:51:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-12 11:51:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-12 11:51:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 11:51:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 11:51:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 11:51:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 11:51:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 11:51:24,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 11:51:25,030 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 11:51:25,033 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 11:51:26,680 INFO L? ?]: Removed 355 outVars from TransFormulas that were not future-live. [2024-11-12 11:51:26,680 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 11:51:26,712 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 11:51:26,712 INFO L316 CfgBuilder]: Removed 71 assume(true) statements. [2024-11-12 11:51:26,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:51:26 BoogieIcfgContainer [2024-11-12 11:51:26,713 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 11:51:26,719 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 11:51:26,721 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 11:51:26,724 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 11:51:26,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:51:23" (1/3) ... [2024-11-12 11:51:26,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd56d13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:51:26, skipping insertion in model container [2024-11-12 11:51:26,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:24" (2/3) ... [2024-11-12 11:51:26,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd56d13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:51:26, skipping insertion in model container [2024-11-12 11:51:26,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:51:26" (3/3) ... [2024-11-12 11:51:26,727 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test8-2.i [2024-11-12 11:51:26,745 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 11:51:26,745 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-12 11:51:26,821 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 11:51:26,829 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;@2bf9d21b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 11:51:26,830 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-12 11:51:26,836 INFO L276 IsEmpty]: Start isEmpty. Operand has 471 states, 445 states have (on average 1.6269662921348316) internal successors, (724), 462 states have internal predecessors, (724), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-12 11:51:26,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-12 11:51:26,842 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:51:26,842 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:51:26,843 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:51:26,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:51:26,849 INFO L85 PathProgramCache]: Analyzing trace with hash -351686983, now seen corresponding path program 1 times [2024-11-12 11:51:26,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:51:26,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935834572] [2024-11-12 11:51:26,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:26,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:51:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:27,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 11:51:27,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:51:27,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935834572] [2024-11-12 11:51:27,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935834572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:51:27,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:51:27,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 11:51:27,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049407718] [2024-11-12 11:51:27,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:51:27,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 11:51:27,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:51:27,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 11:51:27,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 11:51:27,137 INFO L87 Difference]: Start difference. First operand has 471 states, 445 states have (on average 1.6269662921348316) internal successors, (724), 462 states have internal predecessors, (724), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:51:27,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:51:27,228 INFO L93 Difference]: Finished difference Result 940 states and 1543 transitions. [2024-11-12 11:51:27,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 11:51:27,231 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-12 11:51:27,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:51:27,249 INFO L225 Difference]: With dead ends: 940 [2024-11-12 11:51:27,250 INFO L226 Difference]: Without dead ends: 432 [2024-11-12 11:51:27,260 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 11:51:27,264 INFO L435 NwaCegarLoop]: 687 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 11:51:27,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 11:51:27,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-11-12 11:51:27,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2024-11-12 11:51:27,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 407 states have (on average 1.461916461916462) internal successors, (595), 423 states have internal predecessors, (595), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-12 11:51:27,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 635 transitions. [2024-11-12 11:51:27,337 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 635 transitions. Word has length 9 [2024-11-12 11:51:27,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:51:27,338 INFO L471 AbstractCegarLoop]: Abstraction has 432 states and 635 transitions. [2024-11-12 11:51:27,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:51:27,338 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 635 transitions. [2024-11-12 11:51:27,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-12 11:51:27,343 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:51:27,343 INFO L218 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] [2024-11-12 11:51:27,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 11:51:27,344 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:51:27,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:51:27,345 INFO L85 PathProgramCache]: Analyzing trace with hash 559678017, now seen corresponding path program 1 times [2024-11-12 11:51:27,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:51:27,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837147684] [2024-11-12 11:51:27,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:27,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:51:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:27,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 11:51:27,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:51:27,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837147684] [2024-11-12 11:51:27,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837147684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:51:27,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:51:27,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 11:51:27,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917894919] [2024-11-12 11:51:27,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:51:27,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 11:51:27,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:51:27,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 11:51:27,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 11:51:27,788 INFO L87 Difference]: Start difference. First operand 432 states and 635 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:51:27,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:51:27,979 INFO L93 Difference]: Finished difference Result 1045 states and 1537 transitions. [2024-11-12 11:51:27,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 11:51:27,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-12 11:51:27,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:51:27,984 INFO L225 Difference]: With dead ends: 1045 [2024-11-12 11:51:27,985 INFO L226 Difference]: Without dead ends: 817 [2024-11-12 11:51:27,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 11:51:27,987 INFO L435 NwaCegarLoop]: 616 mSDtfsCounter, 547 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 11:51:27,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 1840 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 11:51:27,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2024-11-12 11:51:28,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 434. [2024-11-12 11:51:28,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 409 states have (on average 1.4596577017114913) internal successors, (597), 425 states have internal predecessors, (597), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-12 11:51:28,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 637 transitions. [2024-11-12 11:51:28,030 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 637 transitions. Word has length 64 [2024-11-12 11:51:28,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:51:28,030 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 637 transitions. [2024-11-12 11:51:28,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:51:28,030 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 637 transitions. [2024-11-12 11:51:28,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-12 11:51:28,036 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:51:28,036 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:51:28,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 11:51:28,036 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:51:28,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:51:28,039 INFO L85 PathProgramCache]: Analyzing trace with hash 2092098682, now seen corresponding path program 1 times [2024-11-12 11:51:28,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:51:28,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345910807] [2024-11-12 11:51:28,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:28,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:51:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:28,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 11:51:28,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:51:28,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345910807] [2024-11-12 11:51:28,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345910807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:51:28,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:51:28,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 11:51:28,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515845609] [2024-11-12 11:51:28,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:51:28,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 11:51:28,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:51:28,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 11:51:28,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 11:51:28,392 INFO L87 Difference]: Start difference. First operand 434 states and 637 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (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) [2024-11-12 11:51:28,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:51:28,489 INFO L93 Difference]: Finished difference Result 822 states and 1204 transitions. [2024-11-12 11:51:28,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 11:51:28,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (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 85 [2024-11-12 11:51:28,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:51:28,495 INFO L225 Difference]: With dead ends: 822 [2024-11-12 11:51:28,495 INFO L226 Difference]: Without dead ends: 392 [2024-11-12 11:51:28,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 11:51:28,499 INFO L435 NwaCegarLoop]: 533 mSDtfsCounter, 30 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 11:51:28,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1580 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 11:51:28,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-11-12 11:51:28,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2024-11-12 11:51:28,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 367 states have (on average 1.4168937329700273) internal successors, (520), 383 states have internal predecessors, (520), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-12 11:51:28,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 560 transitions. [2024-11-12 11:51:28,518 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 560 transitions. Word has length 85 [2024-11-12 11:51:28,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:51:28,518 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 560 transitions. [2024-11-12 11:51:28,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (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) [2024-11-12 11:51:28,519 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 560 transitions. [2024-11-12 11:51:28,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-12 11:51:28,525 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:51:28,525 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:51:28,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 11:51:28,526 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:51:28,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:51:28,526 INFO L85 PathProgramCache]: Analyzing trace with hash -2046434962, now seen corresponding path program 1 times [2024-11-12 11:51:28,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:51:28,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818622220] [2024-11-12 11:51:28,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:28,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:51:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 11:51:28,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:51:28,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818622220] [2024-11-12 11:51:28,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818622220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:51:28,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:51:28,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 11:51:28,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926098583] [2024-11-12 11:51:28,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:51:28,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 11:51:28,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:51:28,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 11:51:28,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 11:51:28,727 INFO L87 Difference]: Start difference. First operand 392 states and 560 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-11-12 11:51:28,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:51:28,871 INFO L93 Difference]: Finished difference Result 1032 states and 1478 transitions. [2024-11-12 11:51:28,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 11:51:28,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 85 [2024-11-12 11:51:28,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:51:28,877 INFO L225 Difference]: With dead ends: 1032 [2024-11-12 11:51:28,877 INFO L226 Difference]: Without dead ends: 644 [2024-11-12 11:51:28,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 11:51:28,881 INFO L435 NwaCegarLoop]: 737 mSDtfsCounter, 295 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 11:51:28,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 1266 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 11:51:28,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2024-11-12 11:51:28,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 641. [2024-11-12 11:51:28,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 615 states have (on average 1.424390243902439) internal successors, (876), 631 states have internal predecessors, (876), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-12 11:51:28,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 918 transitions. [2024-11-12 11:51:28,906 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 918 transitions. Word has length 85 [2024-11-12 11:51:28,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:51:28,907 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 918 transitions. [2024-11-12 11:51:28,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-11-12 11:51:28,908 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 918 transitions. [2024-11-12 11:51:28,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-12 11:51:28,910 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:51:28,911 INFO L218 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] [2024-11-12 11:51:28,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 11:51:28,912 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:51:28,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:51:28,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1409542968, now seen corresponding path program 1 times [2024-11-12 11:51:28,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:51:28,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433952857] [2024-11-12 11:51:28,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:28,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:51:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:29,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-12 11:51:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:29,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-12 11:51:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 11:51:29,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:51:29,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433952857] [2024-11-12 11:51:29,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433952857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:51:29,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435615192] [2024-11-12 11:51:29,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:29,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:51:29,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:51:29,488 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:51:29,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 11:51:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:29,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-12 11:51:29,873 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:51:29,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 11:51:29,945 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 22 treesize of output 7 [2024-11-12 11:51:30,505 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 11:51:30,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 55 [2024-11-12 11:51:30,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 11:51:30,808 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 11:51:30,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435615192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:51:30,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 11:51:30,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2024-11-12 11:51:30,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807411171] [2024-11-12 11:51:30,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:51:30,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 11:51:30,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:51:30,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 11:51:30,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-12 11:51:30,812 INFO L87 Difference]: Start difference. First operand 641 states and 918 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:51:33,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:51:33,223 INFO L93 Difference]: Finished difference Result 1537 states and 2203 transitions. [2024-11-12 11:51:33,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 11:51:33,224 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 1 states have call successors, (4), 1 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 100 [2024-11-12 11:51:33,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:51:33,229 INFO L225 Difference]: With dead ends: 1537 [2024-11-12 11:51:33,229 INFO L226 Difference]: Without dead ends: 940 [2024-11-12 11:51:33,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-11-12 11:51:33,232 INFO L435 NwaCegarLoop]: 534 mSDtfsCounter, 595 mSDsluCounter, 3598 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 4132 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-12 11:51:33,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 4132 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-12 11:51:33,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2024-11-12 11:51:33,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 641. [2024-11-12 11:51:33,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 615 states have (on average 1.4227642276422765) internal successors, (875), 631 states have internal predecessors, (875), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-12 11:51:33,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 917 transitions. [2024-11-12 11:51:33,256 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 917 transitions. Word has length 100 [2024-11-12 11:51:33,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:51:33,257 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 917 transitions. [2024-11-12 11:51:33,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:51:33,257 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 917 transitions. [2024-11-12 11:51:33,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-12 11:51:33,258 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:51:33,258 INFO L218 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] [2024-11-12 11:51:33,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 11:51:33,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:51:33,461 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:51:33,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:51:33,462 INFO L85 PathProgramCache]: Analyzing trace with hash 190823784, now seen corresponding path program 1 times [2024-11-12 11:51:33,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:51:33,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654866421] [2024-11-12 11:51:33,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:33,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:51:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:33,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:51:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:33,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:51:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:33,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 11:51:33,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:51:33,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654866421] [2024-11-12 11:51:33,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654866421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:51:33,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85152159] [2024-11-12 11:51:33,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:33,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:51:33,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:51:33,971 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:51:33,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 11:51:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:34,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 11:51:34,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:51:34,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 11:51:34,371 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 11:51:34,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85152159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:51:34,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 11:51:34,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-12 11:51:34,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423421739] [2024-11-12 11:51:34,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:51:34,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 11:51:34,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:51:34,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 11:51:34,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 11:51:34,375 INFO L87 Difference]: Start difference. First operand 641 states and 917 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:51:34,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:51:34,500 INFO L93 Difference]: Finished difference Result 1238 states and 1784 transitions. [2024-11-12 11:51:34,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 11:51:34,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (4), 1 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 101 [2024-11-12 11:51:34,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:51:34,506 INFO L225 Difference]: With dead ends: 1238 [2024-11-12 11:51:34,506 INFO L226 Difference]: Without dead ends: 641 [2024-11-12 11:51:34,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 11:51:34,508 INFO L435 NwaCegarLoop]: 542 mSDtfsCounter, 17 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 11:51:34,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1497 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 11:51:34,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2024-11-12 11:51:34,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 641. [2024-11-12 11:51:34,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 615 states have (on average 1.4195121951219511) internal successors, (873), 631 states have internal predecessors, (873), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-12 11:51:34,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 915 transitions. [2024-11-12 11:51:34,545 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 915 transitions. Word has length 101 [2024-11-12 11:51:34,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:51:34,545 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 915 transitions. [2024-11-12 11:51:34,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:51:34,546 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 915 transitions. [2024-11-12 11:51:34,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-12 11:51:34,547 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:51:34,547 INFO L218 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] [2024-11-12 11:51:34,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-12 11:51:34,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-12 11:51:34,748 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:51:34,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:51:34,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1382799827, now seen corresponding path program 1 times [2024-11-12 11:51:34,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:51:34,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490908981] [2024-11-12 11:51:34,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:34,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:51:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:35,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-12 11:51:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:35,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-12 11:51:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:35,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 11:51:35,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:51:35,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490908981] [2024-11-12 11:51:35,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490908981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:51:35,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:51:35,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 11:51:35,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539994708] [2024-11-12 11:51:35,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:51:35,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 11:51:35,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:51:35,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 11:51:35,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-12 11:51:35,108 INFO L87 Difference]: Start difference. First operand 641 states and 915 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 1 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) [2024-11-12 11:51:35,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:51:35,816 INFO L93 Difference]: Finished difference Result 1244 states and 1792 transitions. [2024-11-12 11:51:35,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 11:51:35,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 1 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 102 [2024-11-12 11:51:35,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:51:35,820 INFO L225 Difference]: With dead ends: 1244 [2024-11-12 11:51:35,821 INFO L226 Difference]: Without dead ends: 650 [2024-11-12 11:51:35,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-12 11:51:35,823 INFO L435 NwaCegarLoop]: 472 mSDtfsCounter, 64 mSDsluCounter, 1979 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-12 11:51:35,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 2451 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-12 11:51:35,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2024-11-12 11:51:35,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 647. [2024-11-12 11:51:35,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 621 states have (on average 1.4154589371980677) internal successors, (879), 637 states have internal predecessors, (879), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-12 11:51:35,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 921 transitions. [2024-11-12 11:51:35,867 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 921 transitions. Word has length 102 [2024-11-12 11:51:35,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:51:35,867 INFO L471 AbstractCegarLoop]: Abstraction has 647 states and 921 transitions. [2024-11-12 11:51:35,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 1 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) [2024-11-12 11:51:35,870 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 921 transitions. [2024-11-12 11:51:35,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-12 11:51:35,871 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:51:35,872 INFO L218 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] [2024-11-12 11:51:35,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 11:51:35,872 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:51:35,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:51:35,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1156605761, now seen corresponding path program 1 times [2024-11-12 11:51:35,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:51:35,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786233660] [2024-11-12 11:51:35,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:35,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:51:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:36,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-12 11:51:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:36,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-12 11:51:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:36,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 11:51:36,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:51:36,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786233660] [2024-11-12 11:51:36,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786233660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:51:36,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:51:36,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 11:51:36,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122799407] [2024-11-12 11:51:36,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:51:36,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 11:51:36,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:51:36,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 11:51:36,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-12 11:51:36,309 INFO L87 Difference]: Start difference. First operand 647 states and 921 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 1 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) [2024-11-12 11:51:37,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:51:37,138 INFO L93 Difference]: Finished difference Result 1250 states and 1796 transitions. [2024-11-12 11:51:37,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 11:51:37,139 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 1 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 103 [2024-11-12 11:51:37,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:51:37,143 INFO L225 Difference]: With dead ends: 1250 [2024-11-12 11:51:37,143 INFO L226 Difference]: Without dead ends: 660 [2024-11-12 11:51:37,145 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-12 11:51:37,145 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 68 mSDsluCounter, 2365 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-12 11:51:37,146 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 2827 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-12 11:51:37,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2024-11-12 11:51:37,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 655. [2024-11-12 11:51:37,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 629 states have (on average 1.4133545310015898) internal successors, (889), 645 states have internal predecessors, (889), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-12 11:51:37,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 931 transitions. [2024-11-12 11:51:37,167 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 931 transitions. Word has length 103 [2024-11-12 11:51:37,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:51:37,168 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 931 transitions. [2024-11-12 11:51:37,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 1 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) [2024-11-12 11:51:37,168 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 931 transitions. [2024-11-12 11:51:37,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-12 11:51:37,171 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:51:37,171 INFO L218 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] [2024-11-12 11:51:37,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 11:51:37,172 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:51:37,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:51:37,172 INFO L85 PathProgramCache]: Analyzing trace with hash 728884005, now seen corresponding path program 1 times [2024-11-12 11:51:37,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:51:37,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494460347] [2024-11-12 11:51:37,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:37,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:51:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:37,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-12 11:51:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:37,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-12 11:51:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:37,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 11:51:37,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:51:37,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494460347] [2024-11-12 11:51:37,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494460347] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:51:37,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231717546] [2024-11-12 11:51:37,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:37,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:51:37,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:51:37,580 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:51:37,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 11:51:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:37,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 11:51:37,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:51:37,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 11:51:37,989 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 11:51:37,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231717546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:51:37,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 11:51:37,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-11-12 11:51:37,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754517253] [2024-11-12 11:51:37,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:51:37,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 11:51:37,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:51:37,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 11:51:37,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 11:51:37,992 INFO L87 Difference]: Start difference. First operand 655 states and 931 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 11:51:38,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:51:38,034 INFO L93 Difference]: Finished difference Result 1215 states and 1740 transitions. [2024-11-12 11:51:38,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 11:51:38,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 103 [2024-11-12 11:51:38,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:51:38,040 INFO L225 Difference]: With dead ends: 1215 [2024-11-12 11:51:38,040 INFO L226 Difference]: Without dead ends: 658 [2024-11-12 11:51:38,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 11:51:38,042 INFO L435 NwaCegarLoop]: 548 mSDtfsCounter, 0 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 11:51:38,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1640 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 11:51:38,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2024-11-12 11:51:38,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2024-11-12 11:51:38,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 631 states have (on average 1.4136291600633915) internal successors, (892), 648 states have internal predecessors, (892), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-12 11:51:38,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 935 transitions. [2024-11-12 11:51:38,065 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 935 transitions. Word has length 103 [2024-11-12 11:51:38,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:51:38,066 INFO L471 AbstractCegarLoop]: Abstraction has 658 states and 935 transitions. [2024-11-12 11:51:38,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 11:51:38,066 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 935 transitions. [2024-11-12 11:51:38,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-12 11:51:38,067 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:51:38,068 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:51:38,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-12 11:51:38,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:51:38,269 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:51:38,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:51:38,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1574009597, now seen corresponding path program 1 times [2024-11-12 11:51:38,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:51:38,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911351216] [2024-11-12 11:51:38,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:38,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:51:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:38,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-12 11:51:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:38,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-12 11:51:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:38,798 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 11:51:38,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:51:38,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911351216] [2024-11-12 11:51:38,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911351216] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:51:38,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347745445] [2024-11-12 11:51:38,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:38,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:51:38,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:51:38,801 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:51:38,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 11:51:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:39,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-12 11:51:39,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:51:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 11:51:39,279 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 11:51:39,368 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 11:51:39,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347745445] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 11:51:39,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 11:51:39,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-12 11:51:39,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774837172] [2024-11-12 11:51:39,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 11:51:39,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 11:51:39,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:51:39,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 11:51:39,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-12 11:51:39,371 INFO L87 Difference]: Start difference. First operand 658 states and 935 transitions. Second operand has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 10 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-12 11:51:40,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:51:40,045 INFO L93 Difference]: Finished difference Result 1229 states and 1762 transitions. [2024-11-12 11:51:40,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 11:51:40,046 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 10 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 105 [2024-11-12 11:51:40,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:51:40,050 INFO L225 Difference]: With dead ends: 1229 [2024-11-12 11:51:40,050 INFO L226 Difference]: Without dead ends: 667 [2024-11-12 11:51:40,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2024-11-12 11:51:40,052 INFO L435 NwaCegarLoop]: 480 mSDtfsCounter, 62 mSDsluCounter, 2782 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 3262 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-12 11:51:40,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 3262 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-12 11:51:40,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2024-11-12 11:51:40,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2024-11-12 11:51:40,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 639 states have (on average 1.4147104851330203) internal successors, (904), 656 states have internal predecessors, (904), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-12 11:51:40,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 948 transitions. [2024-11-12 11:51:40,076 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 948 transitions. Word has length 105 [2024-11-12 11:51:40,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:51:40,076 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 948 transitions. [2024-11-12 11:51:40,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 10 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-12 11:51:40,077 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 948 transitions. [2024-11-12 11:51:40,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-12 11:51:40,078 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:51:40,078 INFO L218 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:51:40,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 11:51:40,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:51:40,279 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:51:40,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:51:40,279 INFO L85 PathProgramCache]: Analyzing trace with hash 836960421, now seen corresponding path program 2 times [2024-11-12 11:51:40,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:51:40,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076271566] [2024-11-12 11:51:40,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:40,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:51:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:40,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-12 11:51:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:40,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-12 11:51:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:40,824 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-12 11:51:40,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:51:40,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076271566] [2024-11-12 11:51:40,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076271566] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:51:40,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428552762] [2024-11-12 11:51:40,825 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 11:51:40,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:51:40,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:51:40,827 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:51:40,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 11:51:41,263 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 11:51:41,263 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 11:51:41,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 11:51:41,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:51:41,526 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-12 11:51:41,526 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 11:51:41,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428552762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:51:41,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 11:51:41,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-12 11:51:41,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114004646] [2024-11-12 11:51:41,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:51:41,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 11:51:41,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:51:41,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 11:51:41,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-12 11:51:41,531 INFO L87 Difference]: Start difference. First operand 667 states and 948 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:51:41,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:51:41,873 INFO L93 Difference]: Finished difference Result 1283 states and 1839 transitions. [2024-11-12 11:51:41,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 11:51:41,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 1 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 109 [2024-11-12 11:51:41,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:51:41,877 INFO L225 Difference]: With dead ends: 1283 [2024-11-12 11:51:41,877 INFO L226 Difference]: Without dead ends: 677 [2024-11-12 11:51:41,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-12 11:51:41,880 INFO L435 NwaCegarLoop]: 537 mSDtfsCounter, 12 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 11:51:41,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2873 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 11:51:41,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2024-11-12 11:51:41,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 667. [2024-11-12 11:51:41,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 639 states have (on average 1.4147104851330203) internal successors, (904), 656 states have internal predecessors, (904), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-12 11:51:41,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 948 transitions. [2024-11-12 11:51:41,903 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 948 transitions. Word has length 109 [2024-11-12 11:51:41,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:51:41,903 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 948 transitions. [2024-11-12 11:51:41,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:51:41,904 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 948 transitions. [2024-11-12 11:51:41,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-12 11:51:41,905 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:51:41,905 INFO L218 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:51:41,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 11:51:42,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-12 11:51:42,106 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:51:42,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:51:42,107 INFO L85 PathProgramCache]: Analyzing trace with hash 87766439, now seen corresponding path program 1 times [2024-11-12 11:51:42,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:51:42,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585582699] [2024-11-12 11:51:42,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:42,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:51:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:42,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-12 11:51:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:42,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-12 11:51:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:42,542 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-12 11:51:42,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:51:42,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585582699] [2024-11-12 11:51:42,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585582699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:51:42,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:51:42,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-12 11:51:42,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800406944] [2024-11-12 11:51:42,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:51:42,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 11:51:42,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:51:42,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 11:51:42,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-12 11:51:42,546 INFO L87 Difference]: Start difference. First operand 667 states and 948 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 9 states have internal predecessors, (96), 1 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) [2024-11-12 11:51:43,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:51:43,437 INFO L93 Difference]: Finished difference Result 1288 states and 1843 transitions. [2024-11-12 11:51:43,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 11:51:43,437 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 9 states have internal predecessors, (96), 1 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 110 [2024-11-12 11:51:43,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:51:43,441 INFO L225 Difference]: With dead ends: 1288 [2024-11-12 11:51:43,441 INFO L226 Difference]: Without dead ends: 687 [2024-11-12 11:51:43,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-12 11:51:43,443 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 76 mSDsluCounter, 3232 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 3694 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-12 11:51:43,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 3694 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-12 11:51:43,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2024-11-12 11:51:43,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 681. [2024-11-12 11:51:43,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 653 states have (on average 1.4119448698315467) internal successors, (922), 670 states have internal predecessors, (922), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-12 11:51:43,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 966 transitions. [2024-11-12 11:51:43,463 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 966 transitions. Word has length 110 [2024-11-12 11:51:43,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:51:43,464 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 966 transitions. [2024-11-12 11:51:43,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 9 states have internal predecessors, (96), 1 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) [2024-11-12 11:51:43,464 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 966 transitions. [2024-11-12 11:51:43,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-12 11:51:43,465 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:51:43,465 INFO L218 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:51:43,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 11:51:43,465 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:51:43,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:51:43,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1330294461, now seen corresponding path program 1 times [2024-11-12 11:51:43,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:51:43,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901697352] [2024-11-12 11:51:43,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:43,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:51:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:43,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-12 11:51:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:43,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-12 11:51:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:44,011 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-12 11:51:44,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:51:44,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901697352] [2024-11-12 11:51:44,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901697352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:51:44,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950156060] [2024-11-12 11:51:44,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:44,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:51:44,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:51:44,014 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:51:44,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 11:51:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:44,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-12 11:51:44,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:51:44,618 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-12 11:51:44,619 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 11:51:44,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950156060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:51:44,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 11:51:44,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-12 11:51:44,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228722996] [2024-11-12 11:51:44,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:51:44,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 11:51:44,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:51:44,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 11:51:44,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-12 11:51:44,622 INFO L87 Difference]: Start difference. First operand 681 states and 966 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:51:45,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:51:45,010 INFO L93 Difference]: Finished difference Result 1313 states and 1874 transitions. [2024-11-12 11:51:45,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 11:51:45,011 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 1 states have call successors, (4), 1 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 110 [2024-11-12 11:51:45,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:51:45,015 INFO L225 Difference]: With dead ends: 1313 [2024-11-12 11:51:45,016 INFO L226 Difference]: Without dead ends: 705 [2024-11-12 11:51:45,017 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-12 11:51:45,018 INFO L435 NwaCegarLoop]: 539 mSDtfsCounter, 41 mSDsluCounter, 2395 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2934 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 11:51:45,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 2934 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 11:51:45,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2024-11-12 11:51:45,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 691. [2024-11-12 11:51:45,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 663 states have (on average 1.4087481146304677) internal successors, (934), 680 states have internal predecessors, (934), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-12 11:51:45,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 978 transitions. [2024-11-12 11:51:45,043 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 978 transitions. Word has length 110 [2024-11-12 11:51:45,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:51:45,044 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 978 transitions. [2024-11-12 11:51:45,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:51:45,044 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 978 transitions. [2024-11-12 11:51:45,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-12 11:51:45,045 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:51:45,045 INFO L218 NwaCegarLoop]: trace histogram [6, 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] [2024-11-12 11:51:45,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-12 11:51:45,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:51:45,250 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:51:45,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:51:45,250 INFO L85 PathProgramCache]: Analyzing trace with hash -540963691, now seen corresponding path program 1 times [2024-11-12 11:51:45,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:51:45,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941078927] [2024-11-12 11:51:45,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:45,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:51:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:45,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-12 11:51:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:45,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-12 11:51:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:45,804 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-12 11:51:45,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:51:45,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941078927] [2024-11-12 11:51:45,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941078927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:51:45,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:51:45,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-12 11:51:45,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308970652] [2024-11-12 11:51:45,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:51:45,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 11:51:45,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:51:45,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 11:51:45,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-12 11:51:45,807 INFO L87 Difference]: Start difference. First operand 691 states and 978 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 1 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) [2024-11-12 11:51:46,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:51:46,753 INFO L93 Difference]: Finished difference Result 1327 states and 1894 transitions. [2024-11-12 11:51:46,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 11:51:46,754 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 1 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 111 [2024-11-12 11:51:46,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:51:46,757 INFO L225 Difference]: With dead ends: 1327 [2024-11-12 11:51:46,757 INFO L226 Difference]: Without dead ends: 709 [2024-11-12 11:51:46,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-12 11:51:46,759 INFO L435 NwaCegarLoop]: 469 mSDtfsCounter, 82 mSDsluCounter, 3219 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 3688 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-12 11:51:46,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 3688 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-12 11:51:46,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2024-11-12 11:51:46,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 697. [2024-11-12 11:51:46,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 669 states have (on average 1.4050822122571) internal successors, (940), 686 states have internal predecessors, (940), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-12 11:51:46,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 984 transitions. [2024-11-12 11:51:46,781 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 984 transitions. Word has length 111 [2024-11-12 11:51:46,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:51:46,782 INFO L471 AbstractCegarLoop]: Abstraction has 697 states and 984 transitions. [2024-11-12 11:51:46,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 1 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) [2024-11-12 11:51:46,782 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 984 transitions. [2024-11-12 11:51:46,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-12 11:51:46,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:51:46,783 INFO L218 NwaCegarLoop]: trace histogram [6, 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] [2024-11-12 11:51:46,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-12 11:51:46,784 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:51:46,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:51:46,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1551178631, now seen corresponding path program 1 times [2024-11-12 11:51:46,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:51:46,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110550615] [2024-11-12 11:51:46,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:46,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:51:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:47,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-12 11:51:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:47,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-12 11:51:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:47,513 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-12 11:51:47,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:51:47,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110550615] [2024-11-12 11:51:47,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110550615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:51:47,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642460544] [2024-11-12 11:51:47,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:47,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:51:47,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:51:47,516 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:51:47,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 11:51:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:48,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-12 11:51:48,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:51:48,620 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-12 11:51:48,620 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 11:51:48,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642460544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:51:48,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 11:51:48,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2024-11-12 11:51:48,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014446415] [2024-11-12 11:51:48,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:51:48,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 11:51:48,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:51:48,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 11:51:48,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-11-12 11:51:48,622 INFO L87 Difference]: Start difference. First operand 697 states and 984 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:51:49,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:51:49,445 INFO L93 Difference]: Finished difference Result 1338 states and 1908 transitions. [2024-11-12 11:51:49,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 11:51:49,446 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 1 states have call successors, (4), 1 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 111 [2024-11-12 11:51:49,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:51:49,450 INFO L225 Difference]: With dead ends: 1338 [2024-11-12 11:51:49,451 INFO L226 Difference]: Without dead ends: 717 [2024-11-12 11:51:49,454 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-11-12 11:51:49,455 INFO L435 NwaCegarLoop]: 538 mSDtfsCounter, 17 mSDsluCounter, 3759 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4297 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-12 11:51:49,455 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4297 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-12 11:51:49,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2024-11-12 11:51:49,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 711. [2024-11-12 11:51:49,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 683 states have (on average 1.4026354319180088) internal successors, (958), 700 states have internal predecessors, (958), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-12 11:51:49,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1002 transitions. [2024-11-12 11:51:49,478 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1002 transitions. Word has length 111 [2024-11-12 11:51:49,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:51:49,479 INFO L471 AbstractCegarLoop]: Abstraction has 711 states and 1002 transitions. [2024-11-12 11:51:49,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:51:49,480 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1002 transitions. [2024-11-12 11:51:49,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-12 11:51:49,482 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:51:49,482 INFO L218 NwaCegarLoop]: trace histogram [6, 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] [2024-11-12 11:51:49,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-12 11:51:49,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:51:49,683 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:51:49,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:51:49,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1578355961, now seen corresponding path program 1 times [2024-11-12 11:51:49,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:51:49,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070617558] [2024-11-12 11:51:49,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:49,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:51:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:50,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-12 11:51:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:50,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-12 11:51:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:50,159 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-12 11:51:50,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:51:50,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070617558] [2024-11-12 11:51:50,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070617558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:51:50,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462854216] [2024-11-12 11:51:50,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:50,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:51:50,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:51:50,162 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:51:50,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 11:51:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:50,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-12 11:51:50,678 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:51:50,784 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-12 11:51:50,785 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 11:51:50,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462854216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:51:50,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 11:51:50,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-12 11:51:50,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786682807] [2024-11-12 11:51:50,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:51:50,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 11:51:50,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:51:50,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 11:51:50,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-12 11:51:50,787 INFO L87 Difference]: Start difference. First operand 711 states and 1002 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:51:51,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:51:51,120 INFO L93 Difference]: Finished difference Result 1348 states and 1916 transitions. [2024-11-12 11:51:51,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 11:51:51,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 1 states have call successors, (4), 1 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 111 [2024-11-12 11:51:51,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:51:51,125 INFO L225 Difference]: With dead ends: 1348 [2024-11-12 11:51:51,125 INFO L226 Difference]: Without dead ends: 725 [2024-11-12 11:51:51,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-12 11:51:51,127 INFO L435 NwaCegarLoop]: 526 mSDtfsCounter, 40 mSDsluCounter, 2358 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 11:51:51,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 2884 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 11:51:51,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2024-11-12 11:51:51,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 715. [2024-11-12 11:51:51,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 687 states have (on average 1.4002911208151383) internal successors, (962), 704 states have internal predecessors, (962), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-12 11:51:51,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1006 transitions. [2024-11-12 11:51:51,148 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1006 transitions. Word has length 111 [2024-11-12 11:51:51,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:51:51,148 INFO L471 AbstractCegarLoop]: Abstraction has 715 states and 1006 transitions. [2024-11-12 11:51:51,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:51:51,149 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1006 transitions. [2024-11-12 11:51:51,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-12 11:51:51,149 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:51:51,149 INFO L218 NwaCegarLoop]: trace histogram [6, 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] [2024-11-12 11:51:51,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-12 11:51:51,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-12 11:51:51,350 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:51:51,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:51:51,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1129026816, now seen corresponding path program 1 times [2024-11-12 11:51:51,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:51:51,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699221471] [2024-11-12 11:51:51,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:51,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:51:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:51,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-12 11:51:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:51,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-12 11:51:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:51,798 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-12 11:51:51,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:51:51,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699221471] [2024-11-12 11:51:51,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699221471] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:51:51,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316627151] [2024-11-12 11:51:51,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:51,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:51:51,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:51:51,802 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:51:51,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 11:51:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:52,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-12 11:51:52,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:51:52,534 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-12 11:51:52,534 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 11:51:52,667 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-12 11:51:52,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316627151] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 11:51:52,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 11:51:52,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 15 [2024-11-12 11:51:52,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763716769] [2024-11-12 11:51:52,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 11:51:52,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 11:51:52,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:51:52,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 11:51:52,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-12 11:51:52,670 INFO L87 Difference]: Start difference. First operand 715 states and 1006 transitions. Second operand has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 14 states have internal predecessors, (119), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-12 11:51:53,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:51:53,620 INFO L93 Difference]: Finished difference Result 1316 states and 1868 transitions. [2024-11-12 11:51:53,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-12 11:51:53,621 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 14 states have internal predecessors, (119), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 111 [2024-11-12 11:51:53,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:51:53,624 INFO L225 Difference]: With dead ends: 1316 [2024-11-12 11:51:53,624 INFO L226 Difference]: Without dead ends: 723 [2024-11-12 11:51:53,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=437, Unknown=0, NotChecked=0, Total=600 [2024-11-12 11:51:53,626 INFO L435 NwaCegarLoop]: 469 mSDtfsCounter, 85 mSDsluCounter, 4551 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 5020 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-12 11:51:53,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 5020 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-12 11:51:53,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2024-11-12 11:51:53,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 719. [2024-11-12 11:51:53,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 691 states have (on average 1.4037626628075253) internal successors, (970), 708 states have internal predecessors, (970), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-12 11:51:53,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1013 transitions. [2024-11-12 11:51:53,647 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1013 transitions. Word has length 111 [2024-11-12 11:51:53,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:51:53,647 INFO L471 AbstractCegarLoop]: Abstraction has 719 states and 1013 transitions. [2024-11-12 11:51:53,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 14 states have internal predecessors, (119), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-12 11:51:53,648 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1013 transitions. [2024-11-12 11:51:53,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-12 11:51:53,649 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:51:53,649 INFO L218 NwaCegarLoop]: trace histogram [10, 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] [2024-11-12 11:51:53,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-12 11:51:53,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-12 11:51:53,850 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:51:53,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:51:53,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1638978432, now seen corresponding path program 2 times [2024-11-12 11:51:53,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:51:53,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146610752] [2024-11-12 11:51:53,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:53,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:51:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:54,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-12 11:51:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:54,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-12 11:51:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:54,599 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-12 11:51:54,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:51:54,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146610752] [2024-11-12 11:51:54,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146610752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:51:54,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350904826] [2024-11-12 11:51:54,600 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 11:51:54,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:51:54,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:51:54,602 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:51:54,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 11:51:55,140 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 11:51:55,140 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 11:51:55,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-12 11:51:55,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:51:55,363 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-12 11:51:55,364 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 11:51:55,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350904826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:51:55,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 11:51:55,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2024-11-12 11:51:55,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049931276] [2024-11-12 11:51:55,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:51:55,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 11:51:55,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:51:55,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 11:51:55,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-11-12 11:51:55,366 INFO L87 Difference]: Start difference. First operand 719 states and 1013 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:51:55,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:51:55,683 INFO L93 Difference]: Finished difference Result 1363 states and 1940 transitions. [2024-11-12 11:51:55,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 11:51:55,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 1 states have call successors, (4), 1 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 115 [2024-11-12 11:51:55,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:51:55,686 INFO L225 Difference]: With dead ends: 1363 [2024-11-12 11:51:55,687 INFO L226 Difference]: Without dead ends: 729 [2024-11-12 11:51:55,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-11-12 11:51:55,688 INFO L435 NwaCegarLoop]: 537 mSDtfsCounter, 10 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 11:51:55,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2873 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 11:51:55,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-11-12 11:51:55,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 719. [2024-11-12 11:51:55,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 691 states have (on average 1.4037626628075253) internal successors, (970), 708 states have internal predecessors, (970), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-12 11:51:55,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1013 transitions. [2024-11-12 11:51:55,709 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1013 transitions. Word has length 115 [2024-11-12 11:51:55,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:51:55,709 INFO L471 AbstractCegarLoop]: Abstraction has 719 states and 1013 transitions. [2024-11-12 11:51:55,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:51:55,709 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1013 transitions. [2024-11-12 11:51:55,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-12 11:51:55,710 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:51:55,710 INFO L218 NwaCegarLoop]: trace histogram [10, 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] [2024-11-12 11:51:55,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-12 11:51:55,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-12 11:51:55,912 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:51:55,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:51:55,913 INFO L85 PathProgramCache]: Analyzing trace with hash -800838172, now seen corresponding path program 1 times [2024-11-12 11:51:55,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:51:55,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268013106] [2024-11-12 11:51:55,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:55,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:51:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:56,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-12 11:51:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:56,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-12 11:51:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:56,715 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-12 11:51:56,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:51:56,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268013106] [2024-11-12 11:51:56,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268013106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:51:56,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882973550] [2024-11-12 11:51:56,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:51:56,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:51:56,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:51:56,718 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:51:56,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-12 11:51:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:51:57,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-12 11:51:57,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:51:57,460 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 22 proven. 37 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-12 11:51:57,461 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 11:52:05,703 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 37 proven. 8 refuted. 2 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 11:52:05,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882973550] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 11:52:05,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 11:52:05,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 23 [2024-11-12 11:52:05,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800467007] [2024-11-12 11:52:05,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 11:52:05,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 11:52:05,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:52:05,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 11:52:05,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=378, Unknown=2, NotChecked=0, Total=506 [2024-11-12 11:52:05,707 INFO L87 Difference]: Start difference. First operand 719 states and 1013 transitions. Second operand has 23 states, 23 states have (on average 5.521739130434782) internal successors, (127), 22 states have internal predecessors, (127), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-12 11:52:06,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:52:06,821 INFO L93 Difference]: Finished difference Result 1337 states and 1901 transitions. [2024-11-12 11:52:06,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-12 11:52:06,822 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.521739130434782) internal successors, (127), 22 states have internal predecessors, (127), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 116 [2024-11-12 11:52:06,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:52:06,825 INFO L225 Difference]: With dead ends: 1337 [2024-11-12 11:52:06,825 INFO L226 Difference]: Without dead ends: 734 [2024-11-12 11:52:06,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=344, Invalid=914, Unknown=2, NotChecked=0, Total=1260 [2024-11-12 11:52:06,827 INFO L435 NwaCegarLoop]: 469 mSDtfsCounter, 91 mSDsluCounter, 3642 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 4111 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-12 11:52:06,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 4111 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-12 11:52:06,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2024-11-12 11:52:06,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 728. [2024-11-12 11:52:06,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 700 states have (on average 1.4071428571428573) internal successors, (985), 717 states have internal predecessors, (985), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-12 11:52:06,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1028 transitions. [2024-11-12 11:52:06,848 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1028 transitions. Word has length 116 [2024-11-12 11:52:06,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:52:06,848 INFO L471 AbstractCegarLoop]: Abstraction has 728 states and 1028 transitions. [2024-11-12 11:52:06,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.521739130434782) internal successors, (127), 22 states have internal predecessors, (127), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-12 11:52:06,849 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1028 transitions. [2024-11-12 11:52:06,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-12 11:52:06,850 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:52:06,850 INFO L218 NwaCegarLoop]: trace histogram [19, 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] [2024-11-12 11:52:06,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-12 11:52:07,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:52:07,055 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:52:07,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:52:07,055 INFO L85 PathProgramCache]: Analyzing trace with hash 314447574, now seen corresponding path program 2 times [2024-11-12 11:52:07,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:52:07,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296527366] [2024-11-12 11:52:07,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:52:07,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:52:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:52:07,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-12 11:52:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:52:07,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-12 11:52:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:52:07,864 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-12 11:52:07,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:52:07,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296527366] [2024-11-12 11:52:07,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296527366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:52:07,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820654640] [2024-11-12 11:52:07,865 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 11:52:07,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:52:07,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:52:07,867 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:52:07,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-12 11:52:08,951 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 11:52:08,952 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 11:52:08,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-12 11:52:08,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:52:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2024-11-12 11:52:09,266 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 11:52:09,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820654640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:52:09,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 11:52:09,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2024-11-12 11:52:09,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180073250] [2024-11-12 11:52:09,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:52:09,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 11:52:09,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:52:09,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 11:52:09,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2024-11-12 11:52:09,269 INFO L87 Difference]: Start difference. First operand 728 states and 1028 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:52:09,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:52:09,728 INFO L93 Difference]: Finished difference Result 1375 states and 1960 transitions. [2024-11-12 11:52:09,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 11:52:09,728 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 1 states have call successors, (4), 1 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 125 [2024-11-12 11:52:09,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:52:09,732 INFO L225 Difference]: With dead ends: 1375 [2024-11-12 11:52:09,732 INFO L226 Difference]: Without dead ends: 742 [2024-11-12 11:52:09,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2024-11-12 11:52:09,735 INFO L435 NwaCegarLoop]: 531 mSDtfsCounter, 13 mSDsluCounter, 3793 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4324 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 11:52:09,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4324 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 11:52:09,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2024-11-12 11:52:09,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 728. [2024-11-12 11:52:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 700 states have (on average 1.4071428571428573) internal successors, (985), 717 states have internal predecessors, (985), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-12 11:52:09,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1028 transitions. [2024-11-12 11:52:09,753 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1028 transitions. Word has length 125 [2024-11-12 11:52:09,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:52:09,753 INFO L471 AbstractCegarLoop]: Abstraction has 728 states and 1028 transitions. [2024-11-12 11:52:09,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:52:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1028 transitions. [2024-11-12 11:52:09,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-12 11:52:09,755 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:52:09,755 INFO L218 NwaCegarLoop]: trace histogram [19, 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] [2024-11-12 11:52:09,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-12 11:52:09,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:52:09,956 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:52:09,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:52:09,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1689399366, now seen corresponding path program 1 times [2024-11-12 11:52:09,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:52:09,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346793907] [2024-11-12 11:52:09,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:52:09,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:52:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:52:10,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-12 11:52:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:52:10,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-12 11:52:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:52:10,823 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-12 11:52:10,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:52:10,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346793907] [2024-11-12 11:52:10,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346793907] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:52:10,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585953883] [2024-11-12 11:52:10,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:52:10,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:52:10,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:52:10,825 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:52:10,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-12 11:52:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:52:11,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-12 11:52:11,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:52:11,729 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 107 proven. 28 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-12 11:52:11,730 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 11:52:28,157 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 130 refuted. 4 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-12 11:52:28,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585953883] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 11:52:28,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 11:52:28,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 29 [2024-11-12 11:52:28,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974503743] [2024-11-12 11:52:28,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 11:52:28,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-12 11:52:28,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:52:28,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-12 11:52:28,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=590, Unknown=4, NotChecked=0, Total=812 [2024-11-12 11:52:28,161 INFO L87 Difference]: Start difference. First operand 728 states and 1028 transitions. Second operand has 29 states, 29 states have (on average 4.586206896551724) internal successors, (133), 28 states have internal predecessors, (133), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-12 11:52:30,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:52:30,483 INFO L93 Difference]: Finished difference Result 1353 states and 1927 transitions. [2024-11-12 11:52:30,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-12 11:52:30,484 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.586206896551724) internal successors, (133), 28 states have internal predecessors, (133), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 125 [2024-11-12 11:52:30,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:52:30,488 INFO L225 Difference]: With dead ends: 1353 [2024-11-12 11:52:30,489 INFO L226 Difference]: Without dead ends: 741 [2024-11-12 11:52:30,491 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=620, Invalid=1446, Unknown=4, NotChecked=0, Total=2070 [2024-11-12 11:52:30,492 INFO L435 NwaCegarLoop]: 482 mSDtfsCounter, 66 mSDsluCounter, 5645 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 6127 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-12 11:52:30,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 6127 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-12 11:52:30,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2024-11-12 11:52:30,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 737. [2024-11-12 11:52:30,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 709 states have (on average 1.3963328631875882) internal successors, (990), 726 states have internal predecessors, (990), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-12 11:52:30,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1033 transitions. [2024-11-12 11:52:30,514 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1033 transitions. Word has length 125 [2024-11-12 11:52:30,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:52:30,514 INFO L471 AbstractCegarLoop]: Abstraction has 737 states and 1033 transitions. [2024-11-12 11:52:30,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.586206896551724) internal successors, (133), 28 states have internal predecessors, (133), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-12 11:52:30,515 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1033 transitions. [2024-11-12 11:52:30,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-12 11:52:30,516 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:52:30,516 INFO L218 NwaCegarLoop]: trace histogram [28, 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] [2024-11-12 11:52:30,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-12 11:52:30,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-12 11:52:30,717 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:52:30,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:52:30,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1491997888, now seen corresponding path program 2 times [2024-11-12 11:52:30,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:52:30,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181334036] [2024-11-12 11:52:30,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:52:30,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:52:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:52:31,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-12 11:52:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:52:32,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-12 11:52:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:52:32,286 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 359 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-12 11:52:32,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:52:32,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181334036] [2024-11-12 11:52:32,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181334036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:52:32,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587788376] [2024-11-12 11:52:32,286 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 11:52:32,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:52:32,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:52:32,288 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:52:32,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process