./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/2SB.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/2SB.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 cec14f16ae81e958645b6575cf97932d8a09e14a8eafa007b1475b8cf31c9f62 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 22:31:24,142 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 22:31:24,222 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 22:31:24,228 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 22:31:24,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 22:31:24,262 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 22:31:24,263 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 22:31:24,264 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 22:31:24,264 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 22:31:24,265 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 22:31:24,265 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 22:31:24,265 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 22:31:24,266 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 22:31:24,268 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 22:31:24,268 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 22:31:24,268 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 22:31:24,269 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 22:31:24,269 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 22:31:24,269 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 22:31:24,270 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 22:31:24,273 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 22:31:24,273 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 22:31:24,274 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 22:31:24,274 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 22:31:24,274 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 22:31:24,274 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 22:31:24,274 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 22:31:24,275 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 22:31:24,275 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 22:31:24,275 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 22:31:24,275 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 22:31:24,276 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 22:31:24,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:31:24,276 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 22:31:24,276 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 22:31:24,277 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 22:31:24,277 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 22:31:24,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 22:31:24,277 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 22:31:24,278 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 22:31:24,278 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 22:31:24,280 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 22:31:24,280 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec14f16ae81e958645b6575cf97932d8a09e14a8eafa007b1475b8cf31c9f62 [2024-10-10 22:31:24,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 22:31:24,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 22:31:24,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 22:31:24,590 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 22:31:24,590 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 22:31:24,591 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/2SB.i [2024-10-10 22:31:26,070 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 22:31:26,272 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 22:31:26,273 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/2SB.i [2024-10-10 22:31:26,282 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/6c6763aeb/b93e97eae983412dbe5ccfa295963bff/FLAG00d8fde93 [2024-10-10 22:31:26,641 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/6c6763aeb/b93e97eae983412dbe5ccfa295963bff [2024-10-10 22:31:26,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 22:31:26,645 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 22:31:26,646 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 22:31:26,646 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 22:31:26,650 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 22:31:26,650 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:31:26" (1/1) ... [2024-10-10 22:31:26,651 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@459a0ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:31:26, skipping insertion in model container [2024-10-10 22:31:26,651 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:31:26" (1/1) ... [2024-10-10 22:31:26,681 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 22:31:26,984 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/2SB.i[13547,13560] [2024-10-10 22:31:26,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:31:27,000 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 22:31:27,096 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/2SB.i[13547,13560] [2024-10-10 22:31:27,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:31:27,114 INFO L204 MainTranslator]: Completed translation [2024-10-10 22:31:27,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:31:27 WrapperNode [2024-10-10 22:31:27,115 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 22:31:27,116 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 22:31:27,116 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 22:31:27,117 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 22:31:27,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:31:27" (1/1) ... [2024-10-10 22:31:27,140 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:31:27" (1/1) ... [2024-10-10 22:31:27,243 INFO L138 Inliner]: procedures = 28, calls = 405, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 920 [2024-10-10 22:31:27,243 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 22:31:27,244 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 22:31:27,244 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 22:31:27,244 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 22:31:27,259 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:31:27" (1/1) ... [2024-10-10 22:31:27,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:31:27" (1/1) ... [2024-10-10 22:31:27,273 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:31:27" (1/1) ... [2024-10-10 22:31:27,300 INFO L175 MemorySlicer]: Split 302 memory accesses to 14 slices as follows [48, 10, 13, 3, 40, 13, 10, 15, 10, 4, 11, 76, 37, 12]. 25 percent of accesses are in the largest equivalence class. The 16 initializations are split as follows [0, 0, 5, 0, 0, 5, 1, 0, 0, 0, 0, 0, 0, 5]. The 119 writes are split as follows [10, 5, 2, 2, 20, 2, 3, 5, 5, 3, 5, 40, 15, 2]. [2024-10-10 22:31:27,300 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:31:27" (1/1) ... [2024-10-10 22:31:27,301 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:31:27" (1/1) ... [2024-10-10 22:31:27,368 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:31:27" (1/1) ... [2024-10-10 22:31:27,378 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:31:27" (1/1) ... [2024-10-10 22:31:27,390 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:31:27" (1/1) ... [2024-10-10 22:31:27,398 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:31:27" (1/1) ... [2024-10-10 22:31:27,413 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 22:31:27,414 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 22:31:27,415 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 22:31:27,415 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 22:31:27,416 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:31:27" (1/1) ... [2024-10-10 22:31:27,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:31:27,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:31:27,449 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 22:31:27,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 22:31:27,503 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_write [2024-10-10 22:31:27,503 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_write [2024-10-10 22:31:27,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_headerT [2024-10-10 22:31:27,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_nondet_headerT [2024-10-10 22:31:27,504 INFO L130 BoogieDeclarations]: Found specification of procedure stepWriteBuffer [2024-10-10 22:31:27,504 INFO L138 BoogieDeclarations]: Found implementation of procedure stepWriteBuffer [2024-10-10 22:31:27,504 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_read [2024-10-10 22:31:27,505 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_read [2024-10-10 22:31:27,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-10-10 22:31:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-10-10 22:31:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-10-10 22:31:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-10-10 22:31:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-10-10 22:31:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-10-10 22:31:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-10-10 22:31:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-10-10 22:31:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-10-10 22:31:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2024-10-10 22:31:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2024-10-10 22:31:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#11 [2024-10-10 22:31:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#12 [2024-10-10 22:31:27,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#13 [2024-10-10 22:31:27,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-10 22:31:27,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-10 22:31:27,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-10 22:31:27,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-10 22:31:27,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-10 22:31:27,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-10 22:31:27,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-10 22:31:27,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-10 22:31:27,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-10-10 22:31:27,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-10-10 22:31:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-10-10 22:31:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-10-10 22:31:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-10-10 22:31:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-10-10 22:31:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-10-10 22:31:27,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-10 22:31:27,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-10 22:31:27,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-10 22:31:27,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-10 22:31:27,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-10 22:31:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-10 22:31:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-10 22:31:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-10-10 22:31:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-10-10 22:31:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-10-10 22:31:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-10-10 22:31:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-10-10 22:31:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-10-10 22:31:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-10-10 22:31:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure store_buffering_2_conditions [2024-10-10 22:31:27,513 INFO L138 BoogieDeclarations]: Found implementation of procedure store_buffering_2_conditions [2024-10-10 22:31:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 22:31:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-10 22:31:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-10 22:31:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-10 22:31:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-10 22:31:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-10 22:31:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-10 22:31:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-10 22:31:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-10 22:31:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-10 22:31:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-10 22:31:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-10 22:31:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-10-10 22:31:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-10-10 22:31:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure initWriteBuffer [2024-10-10 22:31:27,515 INFO L138 BoogieDeclarations]: Found implementation of procedure initWriteBuffer [2024-10-10 22:31:27,515 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_fence [2024-10-10 22:31:27,515 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_fence [2024-10-10 22:31:27,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 22:31:27,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 22:31:27,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-10 22:31:27,728 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 22:31:27,730 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 22:31:28,609 INFO L? ?]: Removed 146 outVars from TransFormulas that were not future-live. [2024-10-10 22:31:28,610 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 22:31:28,687 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 22:31:28,688 INFO L314 CfgBuilder]: Removed 12 assume(true) statements. [2024-10-10 22:31:28,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:31:28 BoogieIcfgContainer [2024-10-10 22:31:28,689 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 22:31:28,692 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 22:31:28,693 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 22:31:28,696 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 22:31:28,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 10:31:26" (1/3) ... [2024-10-10 22:31:28,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c6a277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:31:28, skipping insertion in model container [2024-10-10 22:31:28,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:31:27" (2/3) ... [2024-10-10 22:31:28,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c6a277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:31:28, skipping insertion in model container [2024-10-10 22:31:28,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:31:28" (3/3) ... [2024-10-10 22:31:28,700 INFO L112 eAbstractionObserver]: Analyzing ICFG 2SB.i [2024-10-10 22:31:28,716 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 22:31:28,716 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 22:31:28,779 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 22:31:28,786 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;@4d3db4f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 22:31:28,787 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 22:31:28,792 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 132 states have (on average 1.6136363636363635) internal successors, (213), 135 states have internal predecessors, (213), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-10 22:31:28,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-10 22:31:28,801 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:31:28,802 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:31:28,802 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:31:28,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:31:28,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1631832828, now seen corresponding path program 1 times [2024-10-10 22:31:28,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:31:28,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154473994] [2024-10-10 22:31:28,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:28,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:31:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:29,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-10 22:31:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:29,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-10 22:31:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:29,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-10 22:31:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:29,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-10 22:31:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-10 22:31:29,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:31:29,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154473994] [2024-10-10 22:31:29,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154473994] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:31:29,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215389554] [2024-10-10 22:31:29,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:29,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:31:29,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:31:29,448 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:31:29,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 22:31:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:29,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-10 22:31:29,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:31:29,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:31:29,731 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:31:29,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215389554] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:31:29,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:31:29,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2024-10-10 22:31:29,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012101747] [2024-10-10 22:31:29,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:31:29,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-10 22:31:29,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:31:29,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-10 22:31:29,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-10 22:31:29,769 INFO L87 Difference]: Start difference. First operand has 155 states, 132 states have (on average 1.6136363636363635) internal successors, (213), 135 states have internal predecessors, (213), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-10 22:31:30,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:31:30,057 INFO L93 Difference]: Finished difference Result 308 states and 482 transitions. [2024-10-10 22:31:30,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-10 22:31:30,061 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2024-10-10 22:31:30,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:31:30,070 INFO L225 Difference]: With dead ends: 308 [2024-10-10 22:31:30,070 INFO L226 Difference]: Without dead ends: 147 [2024-10-10 22:31:30,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-10 22:31:30,076 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 22:31:30,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 192 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 22:31:30,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-10-10 22:31:30,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-10-10 22:31:30,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 125 states have (on average 1.328) internal successors, (166), 127 states have internal predecessors, (166), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-10 22:31:30,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 194 transitions. [2024-10-10 22:31:30,116 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 194 transitions. Word has length 40 [2024-10-10 22:31:30,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:31:30,117 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 194 transitions. [2024-10-10 22:31:30,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-10 22:31:30,118 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 194 transitions. [2024-10-10 22:31:30,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-10 22:31:30,120 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:31:30,120 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:31:30,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-10 22:31:30,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-10-10 22:31:30,323 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:31:30,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:31:30,323 INFO L85 PathProgramCache]: Analyzing trace with hash -707999250, now seen corresponding path program 1 times [2024-10-10 22:31:30,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:31:30,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678922224] [2024-10-10 22:31:30,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:30,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:31:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:30,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-10 22:31:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:30,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-10 22:31:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:30,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-10 22:31:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:30,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-10 22:31:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:30,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-10 22:31:30,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:31:30,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678922224] [2024-10-10 22:31:30,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678922224] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:31:30,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347946430] [2024-10-10 22:31:30,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:30,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:31:30,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:31:30,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:31:30,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 22:31:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:30,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:31:30,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:31:30,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:31:30,847 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:31:30,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347946430] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:31:30,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:31:30,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-10 22:31:30,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91374284] [2024-10-10 22:31:30,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:31:30,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:31:30,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:31:30,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:31:30,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:31:30,850 INFO L87 Difference]: Start difference. First operand 147 states and 194 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-10 22:31:31,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:31:31,159 INFO L93 Difference]: Finished difference Result 293 states and 387 transitions. [2024-10-10 22:31:31,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:31:31,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2024-10-10 22:31:31,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:31:31,162 INFO L225 Difference]: With dead ends: 293 [2024-10-10 22:31:31,164 INFO L226 Difference]: Without dead ends: 148 [2024-10-10 22:31:31,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:31:31,166 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:31:31,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 357 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 22:31:31,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-10-10 22:31:31,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-10-10 22:31:31,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 126 states have (on average 1.3253968253968254) internal successors, (167), 128 states have internal predecessors, (167), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-10 22:31:31,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 195 transitions. [2024-10-10 22:31:31,190 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 195 transitions. Word has length 41 [2024-10-10 22:31:31,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:31:31,191 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 195 transitions. [2024-10-10 22:31:31,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-10 22:31:31,191 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 195 transitions. [2024-10-10 22:31:31,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-10 22:31:31,192 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:31:31,193 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:31:31,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-10 22:31:31,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:31:31,394 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:31:31,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:31:31,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1485248369, now seen corresponding path program 1 times [2024-10-10 22:31:31,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:31:31,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332496726] [2024-10-10 22:31:31,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:31,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:31:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:31,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-10 22:31:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:31,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-10 22:31:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:31,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-10 22:31:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:31,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-10 22:31:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:31,648 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:31:31,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:31:31,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332496726] [2024-10-10 22:31:31,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332496726] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:31:31,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131151979] [2024-10-10 22:31:31,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:31,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:31:31,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:31:31,652 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:31:31,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 22:31:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:31,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:31:31,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:31:31,929 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-10 22:31:31,930 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:31:31,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131151979] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:31:31,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:31:31,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-10 22:31:31,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972645717] [2024-10-10 22:31:31,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:31:31,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:31:31,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:31:31,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:31:31,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:31:31,936 INFO L87 Difference]: Start difference. First operand 148 states and 195 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-10 22:31:32,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:31:32,200 INFO L93 Difference]: Finished difference Result 292 states and 387 transitions. [2024-10-10 22:31:32,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:31:32,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2024-10-10 22:31:32,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:31:32,203 INFO L225 Difference]: With dead ends: 292 [2024-10-10 22:31:32,203 INFO L226 Difference]: Without dead ends: 149 [2024-10-10 22:31:32,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:31:32,205 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:31:32,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 356 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 22:31:32,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-10-10 22:31:32,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-10-10 22:31:32,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 127 states have (on average 1.3228346456692914) internal successors, (168), 129 states have internal predecessors, (168), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-10 22:31:32,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 196 transitions. [2024-10-10 22:31:32,215 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 196 transitions. Word has length 42 [2024-10-10 22:31:32,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:31:32,216 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 196 transitions. [2024-10-10 22:31:32,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-10 22:31:32,216 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 196 transitions. [2024-10-10 22:31:32,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-10 22:31:32,218 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:31:32,218 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:31:32,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-10 22:31:32,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:31:32,423 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:31:32,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:31:32,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1550976507, now seen corresponding path program 1 times [2024-10-10 22:31:32,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:31:32,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993328829] [2024-10-10 22:31:32,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:32,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:31:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:32,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-10 22:31:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:32,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-10 22:31:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:32,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-10 22:31:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:32,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-10 22:31:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:32,609 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-10 22:31:32,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:31:32,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993328829] [2024-10-10 22:31:32,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993328829] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:31:32,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823118516] [2024-10-10 22:31:32,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:32,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:31:32,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:31:32,614 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:31:32,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-10 22:31:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:32,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:31:32,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:31:32,884 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-10 22:31:32,885 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:31:32,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823118516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:31:32,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:31:32,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-10 22:31:32,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817111618] [2024-10-10 22:31:32,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:31:32,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:31:32,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:31:32,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:31:32,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:31:32,889 INFO L87 Difference]: Start difference. First operand 149 states and 196 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-10 22:31:33,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:31:33,168 INFO L93 Difference]: Finished difference Result 284 states and 374 transitions. [2024-10-10 22:31:33,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:31:33,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 44 [2024-10-10 22:31:33,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:31:33,171 INFO L225 Difference]: With dead ends: 284 [2024-10-10 22:31:33,171 INFO L226 Difference]: Without dead ends: 156 [2024-10-10 22:31:33,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:31:33,173 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 6 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:31:33,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 345 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 22:31:33,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-10-10 22:31:33,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 150. [2024-10-10 22:31:33,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 128 states have (on average 1.3203125) internal successors, (169), 130 states have internal predecessors, (169), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-10 22:31:33,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 197 transitions. [2024-10-10 22:31:33,183 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 197 transitions. Word has length 44 [2024-10-10 22:31:33,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:31:33,184 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 197 transitions. [2024-10-10 22:31:33,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-10 22:31:33,184 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 197 transitions. [2024-10-10 22:31:33,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-10 22:31:33,186 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:31:33,186 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:31:33,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-10 22:31:33,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:31:33,391 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:31:33,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:31:33,391 INFO L85 PathProgramCache]: Analyzing trace with hash 594470631, now seen corresponding path program 1 times [2024-10-10 22:31:33,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:31:33,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649912944] [2024-10-10 22:31:33,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:33,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:31:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:33,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-10 22:31:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:33,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-10 22:31:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:33,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-10 22:31:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:33,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-10 22:31:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:33,592 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-10 22:31:33,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:31:33,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649912944] [2024-10-10 22:31:33,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649912944] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:31:33,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473237363] [2024-10-10 22:31:33,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:33,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:31:33,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:31:33,596 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:31:33,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-10 22:31:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:33,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:31:33,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:31:33,868 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-10 22:31:33,868 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:31:33,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473237363] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:31:33,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:31:33,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-10 22:31:33,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976497487] [2024-10-10 22:31:33,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:31:33,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:31:33,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:31:33,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:31:33,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:31:33,871 INFO L87 Difference]: Start difference. First operand 150 states and 197 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-10 22:31:34,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:31:34,181 INFO L93 Difference]: Finished difference Result 275 states and 363 transitions. [2024-10-10 22:31:34,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:31:34,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2024-10-10 22:31:34,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:31:34,183 INFO L225 Difference]: With dead ends: 275 [2024-10-10 22:31:34,184 INFO L226 Difference]: Without dead ends: 157 [2024-10-10 22:31:34,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:31:34,185 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 6 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:31:34,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 345 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 22:31:34,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-10-10 22:31:34,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2024-10-10 22:31:34,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 129 states have (on average 1.317829457364341) internal successors, (170), 131 states have internal predecessors, (170), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-10 22:31:34,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 198 transitions. [2024-10-10 22:31:34,202 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 198 transitions. Word has length 47 [2024-10-10 22:31:34,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:31:34,202 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 198 transitions. [2024-10-10 22:31:34,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-10 22:31:34,203 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 198 transitions. [2024-10-10 22:31:34,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-10 22:31:34,204 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:31:34,205 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:31:34,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-10 22:31:34,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:31:34,406 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:31:34,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:31:34,406 INFO L85 PathProgramCache]: Analyzing trace with hash -976296171, now seen corresponding path program 1 times [2024-10-10 22:31:34,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:31:34,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611026946] [2024-10-10 22:31:34,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:34,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:31:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:34,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-10 22:31:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:34,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-10 22:31:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:34,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-10 22:31:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:34,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-10 22:31:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:34,585 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-10 22:31:34,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:31:34,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611026946] [2024-10-10 22:31:34,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611026946] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:31:34,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67361965] [2024-10-10 22:31:34,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:34,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:31:34,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:31:34,590 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:31:34,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-10 22:31:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:34,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:31:34,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:31:34,861 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-10 22:31:34,861 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:31:34,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67361965] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:31:34,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:31:34,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-10 22:31:34,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359608957] [2024-10-10 22:31:34,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:31:34,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:31:34,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:31:34,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:31:34,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:31:34,863 INFO L87 Difference]: Start difference. First operand 151 states and 198 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-10 22:31:35,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:31:35,168 INFO L93 Difference]: Finished difference Result 187 states and 253 transitions. [2024-10-10 22:31:35,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:31:35,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2024-10-10 22:31:35,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:31:35,170 INFO L225 Difference]: With dead ends: 187 [2024-10-10 22:31:35,170 INFO L226 Difference]: Without dead ends: 181 [2024-10-10 22:31:35,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:31:35,171 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 47 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:31:35,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 309 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 22:31:35,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-10-10 22:31:35,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 152. [2024-10-10 22:31:35,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 130 states have (on average 1.3153846153846154) internal successors, (171), 132 states have internal predecessors, (171), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-10 22:31:35,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 199 transitions. [2024-10-10 22:31:35,186 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 199 transitions. Word has length 50 [2024-10-10 22:31:35,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:31:35,186 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 199 transitions. [2024-10-10 22:31:35,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-10 22:31:35,186 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 199 transitions. [2024-10-10 22:31:35,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-10 22:31:35,188 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:31:35,188 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:31:35,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-10 22:31:35,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-10 22:31:35,389 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:31:35,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:31:35,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1674374375, now seen corresponding path program 1 times [2024-10-10 22:31:35,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:31:35,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782746268] [2024-10-10 22:31:35,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:35,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:31:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:35,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-10 22:31:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:35,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-10 22:31:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:35,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-10 22:31:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:35,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-10 22:31:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:35,559 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-10 22:31:35,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:31:35,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782746268] [2024-10-10 22:31:35,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782746268] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:31:35,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447678516] [2024-10-10 22:31:35,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:35,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:31:35,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:31:35,562 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:31:35,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-10 22:31:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:35,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:31:35,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:31:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-10 22:31:35,865 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:31:35,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447678516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:31:35,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:31:35,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-10 22:31:35,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742179480] [2024-10-10 22:31:35,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:31:35,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:31:35,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:31:35,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:31:35,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:31:35,868 INFO L87 Difference]: Start difference. First operand 152 states and 199 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-10 22:31:36,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:31:36,193 INFO L93 Difference]: Finished difference Result 189 states and 256 transitions. [2024-10-10 22:31:36,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:31:36,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2024-10-10 22:31:36,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:31:36,196 INFO L225 Difference]: With dead ends: 189 [2024-10-10 22:31:36,196 INFO L226 Difference]: Without dead ends: 153 [2024-10-10 22:31:36,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:31:36,197 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:31:36,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 22:31:36,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-10-10 22:31:36,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2024-10-10 22:31:36,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 131 states have (on average 1.3129770992366412) internal successors, (172), 133 states have internal predecessors, (172), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-10 22:31:36,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 200 transitions. [2024-10-10 22:31:36,207 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 200 transitions. Word has length 60 [2024-10-10 22:31:36,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:31:36,207 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 200 transitions. [2024-10-10 22:31:36,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-10 22:31:36,208 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 200 transitions. [2024-10-10 22:31:36,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-10 22:31:36,210 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:31:36,211 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:31:36,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-10 22:31:36,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:31:36,415 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:31:36,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:31:36,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1940534551, now seen corresponding path program 1 times [2024-10-10 22:31:36,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:31:36,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634452167] [2024-10-10 22:31:36,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:36,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:31:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:36,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-10 22:31:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:36,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-10 22:31:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:36,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-10 22:31:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:36,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-10 22:31:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:36,636 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-10 22:31:36,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:31:36,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634452167] [2024-10-10 22:31:36,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634452167] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:31:36,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484915416] [2024-10-10 22:31:36,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:36,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:31:36,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:31:36,645 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:31:36,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-10 22:31:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:36,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 22:31:36,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:31:37,012 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-10 22:31:37,012 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:31:37,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484915416] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:31:37,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:31:37,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-10 22:31:37,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55595327] [2024-10-10 22:31:37,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:31:37,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:31:37,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:31:37,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:31:37,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:31:37,014 INFO L87 Difference]: Start difference. First operand 153 states and 200 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-10 22:31:37,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:31:37,293 INFO L93 Difference]: Finished difference Result 190 states and 256 transitions. [2024-10-10 22:31:37,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:31:37,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2024-10-10 22:31:37,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:31:37,295 INFO L225 Difference]: With dead ends: 190 [2024-10-10 22:31:37,295 INFO L226 Difference]: Without dead ends: 184 [2024-10-10 22:31:37,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:31:37,296 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 37 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:31:37,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 352 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 22:31:37,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-10-10 22:31:37,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2024-10-10 22:31:37,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 161 states have (on average 1.3664596273291925) internal successors, (220), 163 states have internal predecessors, (220), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-10 22:31:37,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 248 transitions. [2024-10-10 22:31:37,304 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 248 transitions. Word has length 60 [2024-10-10 22:31:37,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:31:37,305 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 248 transitions. [2024-10-10 22:31:37,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-10 22:31:37,305 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 248 transitions. [2024-10-10 22:31:37,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-10 22:31:37,306 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:31:37,306 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:31:37,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-10 22:31:37,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-10 22:31:37,507 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:31:37,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:31:37,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1413461973, now seen corresponding path program 1 times [2024-10-10 22:31:37,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:31:37,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854727084] [2024-10-10 22:31:37,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:37,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:31:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:37,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-10 22:31:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:37,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-10 22:31:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:37,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-10 22:31:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:37,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-10 22:31:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:37,684 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-10 22:31:37,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:31:37,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854727084] [2024-10-10 22:31:37,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854727084] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:31:37,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183626287] [2024-10-10 22:31:37,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:37,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:31:37,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:31:37,686 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:31:37,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-10 22:31:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:38,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 22:31:38,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:31:38,045 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-10 22:31:38,045 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:31:38,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183626287] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:31:38,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:31:38,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-10 22:31:38,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445345046] [2024-10-10 22:31:38,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:31:38,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:31:38,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:31:38,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:31:38,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:31:38,047 INFO L87 Difference]: Start difference. First operand 183 states and 248 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-10 22:31:38,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:31:38,326 INFO L93 Difference]: Finished difference Result 251 states and 353 transitions. [2024-10-10 22:31:38,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:31:38,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 74 [2024-10-10 22:31:38,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:31:38,331 INFO L225 Difference]: With dead ends: 251 [2024-10-10 22:31:38,331 INFO L226 Difference]: Without dead ends: 245 [2024-10-10 22:31:38,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:31:38,332 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 23 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:31:38,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 352 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 22:31:38,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-10-10 22:31:38,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2024-10-10 22:31:38,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 223 states have (on average 1.4260089686098654) internal successors, (318), 225 states have internal predecessors, (318), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-10 22:31:38,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 346 transitions. [2024-10-10 22:31:38,340 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 346 transitions. Word has length 74 [2024-10-10 22:31:38,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:31:38,341 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 346 transitions. [2024-10-10 22:31:38,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-10 22:31:38,341 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 346 transitions. [2024-10-10 22:31:38,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-10 22:31:38,342 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:31:38,343 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:31:38,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-10 22:31:38,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:31:38,544 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:31:38,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:31:38,544 INFO L85 PathProgramCache]: Analyzing trace with hash 58504681, now seen corresponding path program 1 times [2024-10-10 22:31:38,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:31:38,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31288341] [2024-10-10 22:31:38,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:38,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:31:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:38,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-10 22:31:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:38,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-10 22:31:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:38,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-10 22:31:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:38,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-10 22:31:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:38,736 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-10 22:31:38,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:31:38,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31288341] [2024-10-10 22:31:38,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31288341] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:31:38,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601672191] [2024-10-10 22:31:38,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:38,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:31:38,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:31:38,740 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:31:38,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-10 22:31:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:39,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 22:31:39,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:31:39,123 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-10 22:31:39,123 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:31:39,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601672191] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:31:39,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:31:39,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-10 22:31:39,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531363068] [2024-10-10 22:31:39,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:31:39,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:31:39,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:31:39,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:31:39,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:31:39,125 INFO L87 Difference]: Start difference. First operand 245 states and 346 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-10 22:31:39,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:31:39,345 INFO L93 Difference]: Finished difference Result 375 states and 549 transitions. [2024-10-10 22:31:39,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:31:39,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 90 [2024-10-10 22:31:39,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:31:39,348 INFO L225 Difference]: With dead ends: 375 [2024-10-10 22:31:39,348 INFO L226 Difference]: Without dead ends: 369 [2024-10-10 22:31:39,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:31:39,349 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 22 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 22:31:39,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 353 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 22:31:39,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-10-10 22:31:39,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2024-10-10 22:31:39,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 347 states have (on average 1.4812680115273775) internal successors, (514), 349 states have internal predecessors, (514), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-10 22:31:39,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 542 transitions. [2024-10-10 22:31:39,360 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 542 transitions. Word has length 90 [2024-10-10 22:31:39,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:31:39,360 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 542 transitions. [2024-10-10 22:31:39,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-10 22:31:39,360 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 542 transitions. [2024-10-10 22:31:39,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-10 22:31:39,362 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:31:39,362 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:31:39,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-10 22:31:39,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-10 22:31:39,567 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:31:39,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:31:39,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1840084245, now seen corresponding path program 1 times [2024-10-10 22:31:39,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:31:39,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703243554] [2024-10-10 22:31:39,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:39,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:31:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:39,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-10 22:31:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:39,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-10 22:31:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:39,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-10 22:31:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:39,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-10 22:31:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:39,801 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-10 22:31:39,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:31:39,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703243554] [2024-10-10 22:31:39,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703243554] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:31:39,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232982132] [2024-10-10 22:31:39,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:39,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:31:39,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:31:39,804 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:31:39,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-10 22:31:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:40,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 22:31:40,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:31:40,232 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-10 22:31:40,233 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:31:40,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232982132] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:31:40,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:31:40,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-10 22:31:40,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636293818] [2024-10-10 22:31:40,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:31:40,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:31:40,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:31:40,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:31:40,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:31:40,235 INFO L87 Difference]: Start difference. First operand 369 states and 542 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-10 22:31:40,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:31:40,541 INFO L93 Difference]: Finished difference Result 623 states and 941 transitions. [2024-10-10 22:31:40,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:31:40,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 100 [2024-10-10 22:31:40,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:31:40,545 INFO L225 Difference]: With dead ends: 623 [2024-10-10 22:31:40,545 INFO L226 Difference]: Without dead ends: 617 [2024-10-10 22:31:40,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:31:40,546 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 20 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:31:40,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 351 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 22:31:40,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2024-10-10 22:31:40,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2024-10-10 22:31:40,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 595 states have (on average 1.522689075630252) internal successors, (906), 597 states have internal predecessors, (906), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-10 22:31:40,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 934 transitions. [2024-10-10 22:31:40,562 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 934 transitions. Word has length 100 [2024-10-10 22:31:40,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:31:40,562 INFO L471 AbstractCegarLoop]: Abstraction has 617 states and 934 transitions. [2024-10-10 22:31:40,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-10 22:31:40,562 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 934 transitions. [2024-10-10 22:31:40,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-10-10 22:31:40,564 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:31:40,564 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:31:40,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-10 22:31:40,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-10 22:31:40,765 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:31:40,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:31:40,765 INFO L85 PathProgramCache]: Analyzing trace with hash 394013531, now seen corresponding path program 1 times [2024-10-10 22:31:40,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:31:40,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445129184] [2024-10-10 22:31:40,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:40,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:31:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:40,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-10 22:31:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:40,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-10 22:31:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:40,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-10 22:31:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:41,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-10 22:31:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:41,036 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-10-10 22:31:41,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:31:41,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445129184] [2024-10-10 22:31:41,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445129184] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:31:41,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558958903] [2024-10-10 22:31:41,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:41,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:31:41,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:31:41,038 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:31:41,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-10 22:31:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:41,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 22:31:41,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:31:41,443 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-10-10 22:31:41,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:31:41,488 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-10-10 22:31:41,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558958903] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:31:41,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:31:41,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 4] total 9 [2024-10-10 22:31:41,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902200991] [2024-10-10 22:31:41,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:31:41,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-10 22:31:41,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:31:41,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-10 22:31:41,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-10-10 22:31:41,491 INFO L87 Difference]: Start difference. First operand 617 states and 934 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 7 states have internal predecessors, (83), 1 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-10-10 22:31:42,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:31:42,206 INFO L93 Difference]: Finished difference Result 1234 states and 1870 transitions. [2024-10-10 22:31:42,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-10 22:31:42,207 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 7 states have internal predecessors, (83), 1 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 130 [2024-10-10 22:31:42,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:31:42,209 INFO L225 Difference]: With dead ends: 1234 [2024-10-10 22:31:42,209 INFO L226 Difference]: Without dead ends: 620 [2024-10-10 22:31:42,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-10 22:31:42,211 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 47 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 22:31:42,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 695 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 22:31:42,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2024-10-10 22:31:42,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2024-10-10 22:31:42,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 598 states have (on average 1.520066889632107) internal successors, (909), 600 states have internal predecessors, (909), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-10 22:31:42,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 937 transitions. [2024-10-10 22:31:42,225 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 937 transitions. Word has length 130 [2024-10-10 22:31:42,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:31:42,226 INFO L471 AbstractCegarLoop]: Abstraction has 620 states and 937 transitions. [2024-10-10 22:31:42,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 7 states have internal predecessors, (83), 1 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-10-10 22:31:42,226 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 937 transitions. [2024-10-10 22:31:42,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-10-10 22:31:42,228 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:31:42,228 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:31:42,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-10 22:31:42,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:31:42,429 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:31:42,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:31:42,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1076598680, now seen corresponding path program 2 times [2024-10-10 22:31:42,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:31:42,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005045790] [2024-10-10 22:31:42,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:42,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:31:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:42,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-10 22:31:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:42,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-10 22:31:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:42,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-10 22:31:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:42,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-10 22:31:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:42,704 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-10-10 22:31:42,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:31:42,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005045790] [2024-10-10 22:31:42,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005045790] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:31:42,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503051532] [2024-10-10 22:31:42,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:31:42,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:31:42,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:31:42,706 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:31:42,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-10 22:31:43,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 22:31:43,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:31:43,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-10 22:31:43,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:31:43,411 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-10-10 22:31:43,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:31:43,501 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-10-10 22:31:43,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503051532] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:31:43,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:31:43,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 15 [2024-10-10 22:31:43,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853369093] [2024-10-10 22:31:43,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:31:43,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-10 22:31:43,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:31:43,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-10 22:31:43,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2024-10-10 22:31:43,503 INFO L87 Difference]: Start difference. First operand 620 states and 937 transitions. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 13 states have internal predecessors, (93), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-10 22:31:44,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:31:44,441 INFO L93 Difference]: Finished difference Result 1240 states and 1881 transitions. [2024-10-10 22:31:44,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-10 22:31:44,442 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 13 states have internal predecessors, (93), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 133 [2024-10-10 22:31:44,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:31:44,445 INFO L225 Difference]: With dead ends: 1240 [2024-10-10 22:31:44,445 INFO L226 Difference]: Without dead ends: 626 [2024-10-10 22:31:44,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 264 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2024-10-10 22:31:44,446 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 48 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-10 22:31:44,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 990 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-10 22:31:44,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2024-10-10 22:31:44,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2024-10-10 22:31:44,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 604 states have (on average 1.5149006622516556) internal successors, (915), 606 states have internal predecessors, (915), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-10 22:31:44,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 943 transitions. [2024-10-10 22:31:44,460 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 943 transitions. Word has length 133 [2024-10-10 22:31:44,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:31:44,460 INFO L471 AbstractCegarLoop]: Abstraction has 626 states and 943 transitions. [2024-10-10 22:31:44,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 13 states have internal predecessors, (93), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-10 22:31:44,461 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 943 transitions. [2024-10-10 22:31:44,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-10-10 22:31:44,463 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:31:44,463 INFO L215 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:31:44,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-10 22:31:44,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:31:44,664 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:31:44,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:31:44,664 INFO L85 PathProgramCache]: Analyzing trace with hash 943145735, now seen corresponding path program 3 times [2024-10-10 22:31:44,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:31:44,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896258669] [2024-10-10 22:31:44,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:44,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:31:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:44,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-10 22:31:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:44,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-10 22:31:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:44,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-10 22:31:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:44,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-10 22:31:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:44,909 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-10-10 22:31:44,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:31:44,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896258669] [2024-10-10 22:31:44,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896258669] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:31:44,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183131864] [2024-10-10 22:31:44,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 22:31:44,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:31:44,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:31:44,912 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:31:44,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-10 22:31:45,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-10 22:31:45,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:31:45,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-10 22:31:45,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:31:45,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 232 treesize of output 55 [2024-10-10 22:31:46,156 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-10-10 22:31:46,156 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:31:46,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183131864] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:31:46,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:31:46,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-10-10 22:31:46,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726318552] [2024-10-10 22:31:46,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:31:46,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-10 22:31:46,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:31:46,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-10 22:31:46,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-10 22:31:46,158 INFO L87 Difference]: Start difference. First operand 626 states and 943 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-10 22:31:47,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:31:47,586 INFO L93 Difference]: Finished difference Result 1206 states and 1836 transitions. [2024-10-10 22:31:47,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-10 22:31:47,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 140 [2024-10-10 22:31:47,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:31:47,590 INFO L225 Difference]: With dead ends: 1206 [2024-10-10 22:31:47,590 INFO L226 Difference]: Without dead ends: 697 [2024-10-10 22:31:47,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-10-10 22:31:47,592 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 122 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:31:47,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 744 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-10 22:31:47,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-10-10 22:31:47,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 638. [2024-10-10 22:31:47,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 614 states have (on average 1.513029315960912) internal successors, (929), 618 states have internal predecessors, (929), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-10 22:31:47,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 961 transitions. [2024-10-10 22:31:47,617 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 961 transitions. Word has length 140 [2024-10-10 22:31:47,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:31:47,618 INFO L471 AbstractCegarLoop]: Abstraction has 638 states and 961 transitions. [2024-10-10 22:31:47,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-10 22:31:47,618 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 961 transitions. [2024-10-10 22:31:47,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-10-10 22:31:47,620 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:31:47,621 INFO L215 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:31:47,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-10 22:31:47,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-10 22:31:47,825 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:31:47,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:31:47,825 INFO L85 PathProgramCache]: Analyzing trace with hash 485450369, now seen corresponding path program 1 times [2024-10-10 22:31:47,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:31:47,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108786376] [2024-10-10 22:31:47,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:47,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:31:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:48,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-10 22:31:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:48,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-10 22:31:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:48,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-10 22:31:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:48,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-10 22:31:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:48,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-10 22:31:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:48,132 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-10-10 22:31:48,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:31:48,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108786376] [2024-10-10 22:31:48,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108786376] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:31:48,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990238002] [2024-10-10 22:31:48,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:48,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:31:48,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:31:48,135 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:31:48,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-10 22:31:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:48,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 22:31:48,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:31:48,713 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-10-10 22:31:48,713 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:31:48,759 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-10-10 22:31:48,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990238002] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:31:48,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:31:48,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2024-10-10 22:31:48,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836027927] [2024-10-10 22:31:48,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:31:48,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-10 22:31:48,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:31:48,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-10 22:31:48,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-10 22:31:48,761 INFO L87 Difference]: Start difference. First operand 638 states and 961 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-10 22:31:49,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:31:49,797 INFO L93 Difference]: Finished difference Result 1266 states and 1914 transitions. [2024-10-10 22:31:49,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-10 22:31:49,797 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 154 [2024-10-10 22:31:49,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:31:49,800 INFO L225 Difference]: With dead ends: 1266 [2024-10-10 22:31:49,800 INFO L226 Difference]: Without dead ends: 659 [2024-10-10 22:31:49,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-10-10 22:31:49,802 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 75 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:31:49,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 769 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-10 22:31:49,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2024-10-10 22:31:49,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2024-10-10 22:31:49,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 632 states have (on average 1.5031645569620253) internal successors, (950), 636 states have internal predecessors, (950), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-10 22:31:49,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 988 transitions. [2024-10-10 22:31:49,821 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 988 transitions. Word has length 154 [2024-10-10 22:31:49,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:31:49,821 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 988 transitions. [2024-10-10 22:31:49,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-10 22:31:49,821 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 988 transitions. [2024-10-10 22:31:49,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-10-10 22:31:49,824 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:31:49,824 INFO L215 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:31:49,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-10 22:31:50,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-10 22:31:50,026 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:31:50,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:31:50,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1075293643, now seen corresponding path program 2 times [2024-10-10 22:31:50,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:31:50,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379793368] [2024-10-10 22:31:50,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:50,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:31:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:50,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-10 22:31:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:50,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-10 22:31:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:50,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-10 22:31:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:50,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-10 22:31:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:50,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-10 22:31:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:50,324 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-10-10 22:31:50,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:31:50,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379793368] [2024-10-10 22:31:50,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379793368] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:31:50,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459731347] [2024-10-10 22:31:50,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:31:50,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:31:50,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:31:50,326 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:31:50,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-10 22:31:51,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 22:31:51,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:31:51,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-10 22:31:51,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:31:51,219 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-10-10 22:31:51,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:31:51,312 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-10-10 22:31:51,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459731347] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:31:51,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:31:51,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-10-10 22:31:51,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645023200] [2024-10-10 22:31:51,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:31:51,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-10 22:31:51,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:31:51,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-10 22:31:51,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2024-10-10 22:31:51,315 INFO L87 Difference]: Start difference. First operand 659 states and 988 transitions. Second operand has 16 states, 16 states have (on average 7.5) internal successors, (120), 13 states have internal predecessors, (120), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-10 22:31:52,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:31:52,670 INFO L93 Difference]: Finished difference Result 1314 states and 1979 transitions. [2024-10-10 22:31:52,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-10 22:31:52,670 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.5) internal successors, (120), 13 states have internal predecessors, (120), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 163 [2024-10-10 22:31:52,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:31:52,674 INFO L225 Difference]: With dead ends: 1314 [2024-10-10 22:31:52,674 INFO L226 Difference]: Without dead ends: 707 [2024-10-10 22:31:52,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 324 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-10-10 22:31:52,676 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 115 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:31:52,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1066 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-10 22:31:52,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2024-10-10 22:31:52,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 701. [2024-10-10 22:31:52,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 668 states have (on average 1.4850299401197604) internal successors, (992), 672 states have internal predecessors, (992), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-10 22:31:52,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1042 transitions. [2024-10-10 22:31:52,702 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1042 transitions. Word has length 163 [2024-10-10 22:31:52,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:31:52,702 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 1042 transitions. [2024-10-10 22:31:52,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.5) internal successors, (120), 13 states have internal predecessors, (120), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-10 22:31:52,702 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1042 transitions. [2024-10-10 22:31:52,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-10 22:31:52,704 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:31:52,705 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:31:52,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-10 22:31:52,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-10 22:31:52,906 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:31:52,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:31:52,907 INFO L85 PathProgramCache]: Analyzing trace with hash 822500411, now seen corresponding path program 3 times [2024-10-10 22:31:52,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:31:52,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188020147] [2024-10-10 22:31:52,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:52,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:31:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:53,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-10 22:31:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:53,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-10 22:31:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:53,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-10 22:31:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:53,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-10 22:31:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:53,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-10 22:31:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:53,413 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2024-10-10 22:31:53,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:31:53,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188020147] [2024-10-10 22:31:53,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188020147] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:31:53,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:31:53,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-10 22:31:53,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392886617] [2024-10-10 22:31:53,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:31:53,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-10 22:31:53,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:31:53,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-10 22:31:53,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-10 22:31:53,416 INFO L87 Difference]: Start difference. First operand 701 states and 1042 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-10 22:31:54,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:31:54,623 INFO L93 Difference]: Finished difference Result 1683 states and 2585 transitions. [2024-10-10 22:31:54,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-10 22:31:54,624 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 181 [2024-10-10 22:31:54,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:31:54,629 INFO L225 Difference]: With dead ends: 1683 [2024-10-10 22:31:54,629 INFO L226 Difference]: Without dead ends: 1181 [2024-10-10 22:31:54,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-10 22:31:54,630 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 86 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-10 22:31:54,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 780 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-10 22:31:54,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2024-10-10 22:31:54,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 845. [2024-10-10 22:31:54,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 812 states have (on average 1.477832512315271) internal successors, (1200), 816 states have internal predecessors, (1200), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-10 22:31:54,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1250 transitions. [2024-10-10 22:31:54,675 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1250 transitions. Word has length 181 [2024-10-10 22:31:54,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:31:54,676 INFO L471 AbstractCegarLoop]: Abstraction has 845 states and 1250 transitions. [2024-10-10 22:31:54,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-10 22:31:54,676 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1250 transitions. [2024-10-10 22:31:54,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-10 22:31:54,679 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:31:54,679 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:31:54,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-10 22:31:54,680 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:31:54,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:31:54,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1308960703, now seen corresponding path program 1 times [2024-10-10 22:31:54,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:31:54,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885057251] [2024-10-10 22:31:54,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:54,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:31:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:54,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-10 22:31:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:54,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-10 22:31:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:54,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-10 22:31:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:54,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-10 22:31:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:54,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-10 22:31:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:54,997 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-10-10 22:31:54,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:31:54,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885057251] [2024-10-10 22:31:54,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885057251] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:31:54,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:31:54,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-10 22:31:54,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655626162] [2024-10-10 22:31:54,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:31:54,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-10 22:31:54,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:31:54,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-10 22:31:55,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:31:55,000 INFO L87 Difference]: Start difference. First operand 845 states and 1250 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-10 22:31:55,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:31:55,877 INFO L93 Difference]: Finished difference Result 1539 states and 2313 transitions. [2024-10-10 22:31:55,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-10 22:31:55,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 181 [2024-10-10 22:31:55,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:31:55,882 INFO L225 Difference]: With dead ends: 1539 [2024-10-10 22:31:55,882 INFO L226 Difference]: Without dead ends: 893 [2024-10-10 22:31:55,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-10 22:31:55,883 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 48 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 22:31:55,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 770 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 22:31:55,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2024-10-10 22:31:55,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 877. [2024-10-10 22:31:55,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 844 states have (on average 1.4597156398104265) internal successors, (1232), 848 states have internal predecessors, (1232), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-10 22:31:55,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1282 transitions. [2024-10-10 22:31:55,906 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1282 transitions. Word has length 181 [2024-10-10 22:31:55,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:31:55,906 INFO L471 AbstractCegarLoop]: Abstraction has 877 states and 1282 transitions. [2024-10-10 22:31:55,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-10 22:31:55,907 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1282 transitions. [2024-10-10 22:31:55,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-10 22:31:55,909 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:31:55,909 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:31:55,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-10 22:31:55,910 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:31:55,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:31:55,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1741331911, now seen corresponding path program 1 times [2024-10-10 22:31:55,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:31:55,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41337901] [2024-10-10 22:31:55,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:55,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:31:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:56,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-10 22:31:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:56,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-10 22:31:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:56,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-10 22:31:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:56,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-10 22:31:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:56,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-10 22:31:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:56,247 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2024-10-10 22:31:56,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:31:56,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41337901] [2024-10-10 22:31:56,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41337901] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:31:56,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:31:56,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-10 22:31:56,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568366692] [2024-10-10 22:31:56,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:31:56,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-10 22:31:56,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:31:56,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-10 22:31:56,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:31:56,249 INFO L87 Difference]: Start difference. First operand 877 states and 1282 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-10 22:31:56,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:31:56,877 INFO L93 Difference]: Finished difference Result 1603 states and 2393 transitions. [2024-10-10 22:31:56,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-10 22:31:56,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 181 [2024-10-10 22:31:56,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:31:56,880 INFO L225 Difference]: With dead ends: 1603 [2024-10-10 22:31:56,880 INFO L226 Difference]: Without dead ends: 925 [2024-10-10 22:31:56,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-10 22:31:56,882 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 50 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:31:56,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 674 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 22:31:56,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2024-10-10 22:31:56,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 925. [2024-10-10 22:31:56,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 892 states have (on average 1.4349775784753362) internal successors, (1280), 896 states have internal predecessors, (1280), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-10 22:31:56,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1330 transitions. [2024-10-10 22:31:56,904 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1330 transitions. Word has length 181 [2024-10-10 22:31:56,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:31:56,904 INFO L471 AbstractCegarLoop]: Abstraction has 925 states and 1330 transitions. [2024-10-10 22:31:56,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-10 22:31:56,904 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1330 transitions. [2024-10-10 22:31:56,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-10 22:31:56,907 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:31:56,907 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:31:56,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-10 22:31:56,907 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:31:56,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:31:56,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1566483511, now seen corresponding path program 1 times [2024-10-10 22:31:56,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:31:56,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28262578] [2024-10-10 22:31:56,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:56,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:31:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:57,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-10 22:31:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:57,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-10 22:31:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:57,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-10 22:31:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:57,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-10 22:31:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:57,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-10 22:31:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:57,398 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-10-10 22:31:57,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:31:57,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28262578] [2024-10-10 22:31:57,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28262578] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:31:57,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:31:57,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-10 22:31:57,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779494650] [2024-10-10 22:31:57,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:31:57,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-10 22:31:57,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:31:57,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-10 22:31:57,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-10 22:31:57,401 INFO L87 Difference]: Start difference. First operand 925 states and 1330 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 5 states have internal predecessors, (108), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-10 22:31:58,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:31:58,332 INFO L93 Difference]: Finished difference Result 1955 states and 2857 transitions. [2024-10-10 22:31:58,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-10 22:31:58,333 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 5 states have internal predecessors, (108), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 181 [2024-10-10 22:31:58,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:31:58,337 INFO L225 Difference]: With dead ends: 1955 [2024-10-10 22:31:58,338 INFO L226 Difference]: Without dead ends: 1229 [2024-10-10 22:31:58,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-10 22:31:58,340 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 63 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-10 22:31:58,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 823 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-10 22:31:58,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2024-10-10 22:31:58,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1117. [2024-10-10 22:31:58,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1084 states have (on average 1.4317343173431734) internal successors, (1552), 1088 states have internal predecessors, (1552), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-10 22:31:58,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1602 transitions. [2024-10-10 22:31:58,371 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1602 transitions. Word has length 181 [2024-10-10 22:31:58,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:31:58,372 INFO L471 AbstractCegarLoop]: Abstraction has 1117 states and 1602 transitions. [2024-10-10 22:31:58,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 5 states have internal predecessors, (108), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-10 22:31:58,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1602 transitions. [2024-10-10 22:31:58,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-10 22:31:58,376 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:31:58,376 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:31:58,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-10 22:31:58,376 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:31:58,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:31:58,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1983880117, now seen corresponding path program 1 times [2024-10-10 22:31:58,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:31:58,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51140891] [2024-10-10 22:31:58,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:58,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:31:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:58,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-10 22:31:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:58,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-10 22:31:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:58,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-10 22:31:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:58,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-10 22:31:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:58,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-10 22:31:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:58,706 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-10-10 22:31:58,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:31:58,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51140891] [2024-10-10 22:31:58,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51140891] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:31:58,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:31:58,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-10 22:31:58,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235028259] [2024-10-10 22:31:58,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:31:58,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-10 22:31:58,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:31:58,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-10 22:31:58,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:31:58,708 INFO L87 Difference]: Start difference. First operand 1117 states and 1602 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-10 22:31:59,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:31:59,379 INFO L93 Difference]: Finished difference Result 2083 states and 3017 transitions. [2024-10-10 22:31:59,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-10 22:31:59,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 181 [2024-10-10 22:31:59,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:31:59,384 INFO L225 Difference]: With dead ends: 2083 [2024-10-10 22:31:59,384 INFO L226 Difference]: Without dead ends: 1165 [2024-10-10 22:31:59,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-10 22:31:59,386 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 50 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:31:59,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 672 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 22:31:59,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2024-10-10 22:31:59,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1149. [2024-10-10 22:31:59,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 1116 states have (on average 1.4193548387096775) internal successors, (1584), 1120 states have internal predecessors, (1584), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-10 22:31:59,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1634 transitions. [2024-10-10 22:31:59,411 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1634 transitions. Word has length 181 [2024-10-10 22:31:59,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:31:59,412 INFO L471 AbstractCegarLoop]: Abstraction has 1149 states and 1634 transitions. [2024-10-10 22:31:59,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-10 22:31:59,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1634 transitions. [2024-10-10 22:31:59,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-10 22:31:59,415 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:31:59,415 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:31:59,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-10 22:31:59,416 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:31:59,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:31:59,416 INFO L85 PathProgramCache]: Analyzing trace with hash -22305459, now seen corresponding path program 1 times [2024-10-10 22:31:59,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:31:59,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122398276] [2024-10-10 22:31:59,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:31:59,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:31:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:59,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-10 22:31:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:59,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-10 22:31:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:59,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-10 22:31:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:59,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-10 22:31:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:59,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-10 22:31:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:31:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-10-10 22:31:59,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:31:59,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122398276] [2024-10-10 22:31:59,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122398276] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:31:59,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:31:59,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-10 22:31:59,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407442937] [2024-10-10 22:31:59,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:31:59,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-10 22:31:59,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:31:59,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-10 22:31:59,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:31:59,740 INFO L87 Difference]: Start difference. First operand 1149 states and 1634 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-10 22:32:00,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:32:00,378 INFO L93 Difference]: Finished difference Result 2147 states and 3097 transitions. [2024-10-10 22:32:00,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-10 22:32:00,378 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 181 [2024-10-10 22:32:00,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:32:00,382 INFO L225 Difference]: With dead ends: 2147 [2024-10-10 22:32:00,382 INFO L226 Difference]: Without dead ends: 1197 [2024-10-10 22:32:00,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-10 22:32:00,384 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 50 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:32:00,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 674 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 22:32:00,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2024-10-10 22:32:00,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1197. [2024-10-10 22:32:00,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 1164 states have (on average 1.402061855670103) internal successors, (1632), 1168 states have internal predecessors, (1632), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-10 22:32:00,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1682 transitions. [2024-10-10 22:32:00,413 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1682 transitions. Word has length 181 [2024-10-10 22:32:00,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:32:00,414 INFO L471 AbstractCegarLoop]: Abstraction has 1197 states and 1682 transitions. [2024-10-10 22:32:00,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-10 22:32:00,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1682 transitions. [2024-10-10 22:32:00,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-10 22:32:00,416 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:32:00,417 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:32:00,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-10 22:32:00,417 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:32:00,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:32:00,421 INFO L85 PathProgramCache]: Analyzing trace with hash 984368325, now seen corresponding path program 2 times [2024-10-10 22:32:00,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:32:00,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429884065] [2024-10-10 22:32:00,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:32:00,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:32:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:00,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-10 22:32:00,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:00,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-10 22:32:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:00,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-10 22:32:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:00,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-10 22:32:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:00,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-10 22:32:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:00,702 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-10-10 22:32:00,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:32:00,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429884065] [2024-10-10 22:32:00,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429884065] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:32:00,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:32:00,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-10 22:32:00,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472698226] [2024-10-10 22:32:00,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:32:00,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-10 22:32:00,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:32:00,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-10 22:32:00,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:32:00,707 INFO L87 Difference]: Start difference. First operand 1197 states and 1682 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-10 22:32:01,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:32:01,405 INFO L93 Difference]: Finished difference Result 2211 states and 3129 transitions. [2024-10-10 22:32:01,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-10 22:32:01,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 181 [2024-10-10 22:32:01,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:32:01,410 INFO L225 Difference]: With dead ends: 2211 [2024-10-10 22:32:01,410 INFO L226 Difference]: Without dead ends: 1213 [2024-10-10 22:32:01,412 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-10 22:32:01,413 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 49 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 22:32:01,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 683 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 22:32:01,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2024-10-10 22:32:01,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1197. [2024-10-10 22:32:01,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 1164 states have (on average 1.388316151202749) internal successors, (1616), 1168 states have internal predecessors, (1616), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-10 22:32:01,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1666 transitions. [2024-10-10 22:32:01,464 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1666 transitions. Word has length 181 [2024-10-10 22:32:01,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:32:01,464 INFO L471 AbstractCegarLoop]: Abstraction has 1197 states and 1666 transitions. [2024-10-10 22:32:01,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-10 22:32:01,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1666 transitions. [2024-10-10 22:32:01,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-10 22:32:01,468 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:32:01,468 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:32:01,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-10 22:32:01,468 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:32:01,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:32:01,469 INFO L85 PathProgramCache]: Analyzing trace with hash -720094135, now seen corresponding path program 1 times [2024-10-10 22:32:01,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:32:01,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178352638] [2024-10-10 22:32:01,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:32:01,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:32:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:01,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-10 22:32:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:01,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-10 22:32:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:01,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-10 22:32:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:01,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-10 22:32:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:01,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-10 22:32:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:01,798 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2024-10-10 22:32:01,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:32:01,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178352638] [2024-10-10 22:32:01,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178352638] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:32:01,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:32:01,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-10 22:32:01,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238925669] [2024-10-10 22:32:01,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:32:01,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-10 22:32:01,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:32:01,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-10 22:32:01,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:32:01,801 INFO L87 Difference]: Start difference. First operand 1197 states and 1666 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-10 22:32:02,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:32:02,405 INFO L93 Difference]: Finished difference Result 2243 states and 3145 transitions. [2024-10-10 22:32:02,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-10 22:32:02,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 181 [2024-10-10 22:32:02,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:32:02,409 INFO L225 Difference]: With dead ends: 2243 [2024-10-10 22:32:02,409 INFO L226 Difference]: Without dead ends: 1245 [2024-10-10 22:32:02,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-10 22:32:02,410 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 49 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:32:02,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 683 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 22:32:02,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2024-10-10 22:32:02,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1229. [2024-10-10 22:32:02,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1196 states have (on average 1.3645484949832776) internal successors, (1632), 1200 states have internal predecessors, (1632), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-10 22:32:02,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1682 transitions. [2024-10-10 22:32:02,432 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1682 transitions. Word has length 181 [2024-10-10 22:32:02,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:32:02,433 INFO L471 AbstractCegarLoop]: Abstraction has 1229 states and 1682 transitions. [2024-10-10 22:32:02,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-10 22:32:02,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1682 transitions. [2024-10-10 22:32:02,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-10 22:32:02,436 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:32:02,436 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:32:02,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-10 22:32:02,436 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:32:02,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:32:02,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1633436877, now seen corresponding path program 1 times [2024-10-10 22:32:02,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:32:02,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965095933] [2024-10-10 22:32:02,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:32:02,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:32:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:02,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-10 22:32:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:02,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-10 22:32:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:02,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-10 22:32:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:02,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-10 22:32:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:02,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-10 22:32:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:02,837 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-10-10 22:32:02,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:32:02,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965095933] [2024-10-10 22:32:02,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965095933] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:32:02,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:32:02,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-10 22:32:02,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405488259] [2024-10-10 22:32:02,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:32:02,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-10 22:32:02,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:32:02,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-10 22:32:02,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-10 22:32:02,840 INFO L87 Difference]: Start difference. First operand 1229 states and 1682 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 5 states have internal predecessors, (119), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-10 22:32:03,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:32:03,727 INFO L93 Difference]: Finished difference Result 2595 states and 3529 transitions. [2024-10-10 22:32:03,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-10 22:32:03,727 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 5 states have internal predecessors, (119), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 181 [2024-10-10 22:32:03,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:32:03,733 INFO L225 Difference]: With dead ends: 2595 [2024-10-10 22:32:03,733 INFO L226 Difference]: Without dead ends: 1565 [2024-10-10 22:32:03,735 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-10 22:32:03,736 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 78 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 22:32:03,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 827 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 22:32:03,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2024-10-10 22:32:03,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1325. [2024-10-10 22:32:03,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 1292 states have (on average 1.325077399380805) internal successors, (1712), 1296 states have internal predecessors, (1712), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-10 22:32:03,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1762 transitions. [2024-10-10 22:32:03,761 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1762 transitions. Word has length 181 [2024-10-10 22:32:03,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:32:03,762 INFO L471 AbstractCegarLoop]: Abstraction has 1325 states and 1762 transitions. [2024-10-10 22:32:03,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 5 states have internal predecessors, (119), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-10 22:32:03,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1762 transitions. [2024-10-10 22:32:03,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-10 22:32:03,765 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:32:03,765 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:32:03,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-10 22:32:03,766 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:32:03,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:32:03,766 INFO L85 PathProgramCache]: Analyzing trace with hash -2001998897, now seen corresponding path program 1 times [2024-10-10 22:32:03,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:32:03,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575966579] [2024-10-10 22:32:03,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:32:03,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:32:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:03,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-10 22:32:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:03,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-10 22:32:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:04,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-10 22:32:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:04,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-10 22:32:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:04,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-10 22:32:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:04,091 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-10-10 22:32:04,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:32:04,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575966579] [2024-10-10 22:32:04,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575966579] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:32:04,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:32:04,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-10 22:32:04,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762574421] [2024-10-10 22:32:04,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:32:04,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-10 22:32:04,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:32:04,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-10 22:32:04,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:32:04,094 INFO L87 Difference]: Start difference. First operand 1325 states and 1762 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 4 states have internal predecessors, (110), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-10 22:32:04,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:32:04,740 INFO L93 Difference]: Finished difference Result 2499 states and 3337 transitions. [2024-10-10 22:32:04,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-10 22:32:04,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 4 states have internal predecessors, (110), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 181 [2024-10-10 22:32:04,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:32:04,743 INFO L225 Difference]: With dead ends: 2499 [2024-10-10 22:32:04,743 INFO L226 Difference]: Without dead ends: 1373 [2024-10-10 22:32:04,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-10 22:32:04,745 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 49 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:32:04,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 683 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 22:32:04,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2024-10-10 22:32:04,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1357. [2024-10-10 22:32:04,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1324 states have (on average 1.3051359516616314) internal successors, (1728), 1328 states have internal predecessors, (1728), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-10 22:32:04,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1778 transitions. [2024-10-10 22:32:04,770 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1778 transitions. Word has length 181 [2024-10-10 22:32:04,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:32:04,771 INFO L471 AbstractCegarLoop]: Abstraction has 1357 states and 1778 transitions. [2024-10-10 22:32:04,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 4 states have internal predecessors, (110), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-10 22:32:04,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1778 transitions. [2024-10-10 22:32:04,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-10 22:32:04,774 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:32:04,774 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:32:04,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-10 22:32:04,775 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:32:04,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:32:04,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1448962897, now seen corresponding path program 1 times [2024-10-10 22:32:04,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:32:04,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105244977] [2024-10-10 22:32:04,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:32:04,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:32:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:04,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-10 22:32:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:04,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-10 22:32:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:04,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-10 22:32:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:04,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-10 22:32:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:05,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-10 22:32:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:05,037 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2024-10-10 22:32:05,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:32:05,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105244977] [2024-10-10 22:32:05,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105244977] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:32:05,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:32:05,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-10 22:32:05,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188155517] [2024-10-10 22:32:05,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:32:05,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-10 22:32:05,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:32:05,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-10 22:32:05,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:32:05,039 INFO L87 Difference]: Start difference. First operand 1357 states and 1778 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-10 22:32:05,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:32:05,865 INFO L93 Difference]: Finished difference Result 2563 states and 3369 transitions. [2024-10-10 22:32:05,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-10 22:32:05,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 181 [2024-10-10 22:32:05,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:32:05,870 INFO L225 Difference]: With dead ends: 2563 [2024-10-10 22:32:05,870 INFO L226 Difference]: Without dead ends: 1405 [2024-10-10 22:32:05,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-10 22:32:05,872 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 49 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 22:32:05,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 683 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 22:32:05,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2024-10-10 22:32:05,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1389. [2024-10-10 22:32:05,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 1356 states have (on average 1.2861356932153392) internal successors, (1744), 1360 states have internal predecessors, (1744), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-10 22:32:05,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1794 transitions. [2024-10-10 22:32:05,897 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1794 transitions. Word has length 181 [2024-10-10 22:32:05,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:32:05,898 INFO L471 AbstractCegarLoop]: Abstraction has 1389 states and 1794 transitions. [2024-10-10 22:32:05,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-10 22:32:05,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1794 transitions. [2024-10-10 22:32:05,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-10 22:32:05,901 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:32:05,901 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:32:05,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-10 22:32:05,901 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:32:05,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:32:05,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1376576339, now seen corresponding path program 1 times [2024-10-10 22:32:05,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:32:05,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108330799] [2024-10-10 22:32:05,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:32:05,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:32:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:06,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-10 22:32:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:06,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-10 22:32:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:06,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-10 22:32:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:06,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-10 22:32:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:06,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-10 22:32:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:06,184 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2024-10-10 22:32:06,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:32:06,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108330799] [2024-10-10 22:32:06,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108330799] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:32:06,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:32:06,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-10 22:32:06,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074529732] [2024-10-10 22:32:06,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:32:06,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-10 22:32:06,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:32:06,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-10 22:32:06,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:32:06,187 INFO L87 Difference]: Start difference. First operand 1389 states and 1794 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-10 22:32:06,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:32:06,823 INFO L93 Difference]: Finished difference Result 2627 states and 3417 transitions. [2024-10-10 22:32:06,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-10 22:32:06,823 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 181 [2024-10-10 22:32:06,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:32:06,827 INFO L225 Difference]: With dead ends: 2627 [2024-10-10 22:32:06,827 INFO L226 Difference]: Without dead ends: 1437 [2024-10-10 22:32:06,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-10 22:32:06,828 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 47 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:32:06,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 785 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 22:32:06,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2024-10-10 22:32:06,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1437. [2024-10-10 22:32:06,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1404 states have (on average 1.2535612535612535) internal successors, (1760), 1408 states have internal predecessors, (1760), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-10 22:32:06,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 1810 transitions. [2024-10-10 22:32:06,852 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 1810 transitions. Word has length 181 [2024-10-10 22:32:06,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:32:06,853 INFO L471 AbstractCegarLoop]: Abstraction has 1437 states and 1810 transitions. [2024-10-10 22:32:06,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-10 22:32:06,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 1810 transitions. [2024-10-10 22:32:06,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-10 22:32:06,855 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:32:06,856 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:32:06,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-10 22:32:06,856 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:32:06,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:32:06,857 INFO L85 PathProgramCache]: Analyzing trace with hash 2078176213, now seen corresponding path program 1 times [2024-10-10 22:32:06,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:32:06,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049715711] [2024-10-10 22:32:06,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:32:06,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:32:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:07,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-10 22:32:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:07,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-10 22:32:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:07,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-10 22:32:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:07,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-10 22:32:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:07,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-10 22:32:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:07,186 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2024-10-10 22:32:07,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:32:07,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049715711] [2024-10-10 22:32:07,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049715711] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:32:07,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449870615] [2024-10-10 22:32:07,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:32:07,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:32:07,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:32:07,189 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:32:07,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-10 22:32:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:07,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 953 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 22:32:07,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:32:07,967 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-10-10 22:32:07,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:32:08,030 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2024-10-10 22:32:08,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449870615] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:32:08,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:32:08,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2024-10-10 22:32:08,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431698336] [2024-10-10 22:32:08,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:32:08,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-10 22:32:08,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:32:08,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-10 22:32:08,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-10-10 22:32:08,034 INFO L87 Difference]: Start difference. First operand 1437 states and 1810 transitions. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 9 states have internal predecessors, (112), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-10 22:32:08,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:32:08,781 INFO L93 Difference]: Finished difference Result 2797 states and 3528 transitions. [2024-10-10 22:32:08,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-10 22:32:08,782 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 9 states have internal predecessors, (112), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 181 [2024-10-10 22:32:08,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:32:08,787 INFO L225 Difference]: With dead ends: 2797 [2024-10-10 22:32:08,787 INFO L226 Difference]: Without dead ends: 1465 [2024-10-10 22:32:08,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-10 22:32:08,789 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 94 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 22:32:08,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 773 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 22:32:08,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2024-10-10 22:32:08,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1465. [2024-10-10 22:32:08,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1428 states have (on average 1.2521008403361344) internal successors, (1788), 1432 states have internal predecessors, (1788), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2024-10-10 22:32:08,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 1846 transitions. [2024-10-10 22:32:08,816 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 1846 transitions. Word has length 181 [2024-10-10 22:32:08,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:32:08,816 INFO L471 AbstractCegarLoop]: Abstraction has 1465 states and 1846 transitions. [2024-10-10 22:32:08,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 9 states have internal predecessors, (112), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-10 22:32:08,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 1846 transitions. [2024-10-10 22:32:08,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-10-10 22:32:08,819 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:32:08,819 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:32:08,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-10 22:32:09,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-10 22:32:09,020 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:32:09,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:32:09,021 INFO L85 PathProgramCache]: Analyzing trace with hash 381253717, now seen corresponding path program 2 times [2024-10-10 22:32:09,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:32:09,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526876373] [2024-10-10 22:32:09,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:32:09,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:32:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:09,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-10 22:32:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:09,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-10 22:32:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:09,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-10 22:32:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:09,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-10 22:32:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:09,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-10 22:32:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:09,420 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2024-10-10 22:32:09,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:32:09,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526876373] [2024-10-10 22:32:09,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526876373] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:32:09,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929735765] [2024-10-10 22:32:09,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:32:09,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:32:09,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:32:09,423 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:32:09,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-10 22:32:10,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 22:32:10,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:32:10,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-10 22:32:10,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:32:10,360 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-10-10 22:32:10,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:32:10,455 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2024-10-10 22:32:10,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929735765] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:32:10,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:32:10,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 15 [2024-10-10 22:32:10,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190675362] [2024-10-10 22:32:10,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:32:10,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-10 22:32:10,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:32:10,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-10 22:32:10,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2024-10-10 22:32:10,458 INFO L87 Difference]: Start difference. First operand 1465 states and 1846 transitions. Second operand has 15 states, 15 states have (on average 8.266666666666667) internal successors, (124), 12 states have internal predecessors, (124), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-10 22:32:11,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:32:11,380 INFO L93 Difference]: Finished difference Result 2818 states and 3554 transitions. [2024-10-10 22:32:11,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-10 22:32:11,381 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.266666666666667) internal successors, (124), 12 states have internal predecessors, (124), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 193 [2024-10-10 22:32:11,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:32:11,386 INFO L225 Difference]: With dead ends: 2818 [2024-10-10 22:32:11,386 INFO L226 Difference]: Without dead ends: 1486 [2024-10-10 22:32:11,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 386 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2024-10-10 22:32:11,388 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 114 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-10 22:32:11,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 790 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-10 22:32:11,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2024-10-10 22:32:11,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1486. [2024-10-10 22:32:11,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1446 states have (on average 1.2510373443983402) internal successors, (1809), 1450 states have internal predecessors, (1809), 32 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2024-10-10 22:32:11,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 1873 transitions. [2024-10-10 22:32:11,412 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 1873 transitions. Word has length 193 [2024-10-10 22:32:11,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:32:11,412 INFO L471 AbstractCegarLoop]: Abstraction has 1486 states and 1873 transitions. [2024-10-10 22:32:11,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.266666666666667) internal successors, (124), 12 states have internal predecessors, (124), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-10 22:32:11,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 1873 transitions. [2024-10-10 22:32:11,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-10-10 22:32:11,416 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:32:11,416 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:32:11,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-10 22:32:11,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:32:11,616 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:32:11,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:32:11,617 INFO L85 PathProgramCache]: Analyzing trace with hash -706043877, now seen corresponding path program 3 times [2024-10-10 22:32:11,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:32:11,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76224010] [2024-10-10 22:32:11,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:32:11,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:32:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:11,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-10 22:32:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:11,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-10 22:32:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:11,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-10 22:32:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:11,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-10 22:32:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:11,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-10 22:32:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:32:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-10-10 22:32:11,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:32:11,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76224010] [2024-10-10 22:32:11,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76224010] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:32:11,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891849325] [2024-10-10 22:32:11,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 22:32:11,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:32:11,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:32:11,977 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:32:11,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-10 22:32:12,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-10 22:32:12,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:32:12,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-10 22:32:12,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:32:13,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 232 treesize of output 55 [2024-10-10 22:32:13,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:32:13,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 58 treesize of output 54 [2024-10-10 22:32:13,752 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2024-10-10 22:32:13,752 INFO L311 TraceCheckSpWp]: Computing backward predicates...