./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-pthread/cs_time_var_mutex.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-pthread/cs_time_var_mutex.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d5cca3532c956cbfb3f8d24df68dd431ff61516e63bcc0106c0529c479d6a4ef --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 19:43:50,854 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 19:43:50,906 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 19:43:50,910 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 19:43:50,910 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 19:43:50,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 19:43:50,928 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 19:43:50,928 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 19:43:50,928 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 19:43:50,928 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 19:43:50,928 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 19:43:50,928 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 19:43:50,930 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 19:43:50,930 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 19:43:50,930 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 19:43:50,930 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 19:43:50,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 19:43:50,930 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 19:43:50,931 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 19:43:50,932 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 19:43:50,932 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 19:43:50,932 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 19:43:50,932 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 19:43:50,932 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 19:43:50,932 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 19:43:50,932 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 19:43:50,932 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 19:43:50,932 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 19:43:50,932 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 19:43:50,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 19:43:50,932 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 19:43:50,932 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 19:43:50,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:43:50,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 19:43:50,933 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 19:43:50,933 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 19:43:50,933 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 19:43:50,933 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 19:43:50,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 19:43:50,933 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 19:43:50,933 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 19:43:50,933 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 19:43:50,933 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 19:43:50,933 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5cca3532c956cbfb3f8d24df68dd431ff61516e63bcc0106c0529c479d6a4ef [2025-03-16 19:43:51,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 19:43:51,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 19:43:51,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 19:43:51,161 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 19:43:51,162 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 19:43:51,162 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_time_var_mutex.i [2025-03-16 19:43:52,271 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a19b61ea/1067ba8a279247a487584c343b20ef3a/FLAG0655ed36a [2025-03-16 19:43:52,605 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 19:43:52,606 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_time_var_mutex.i [2025-03-16 19:43:52,624 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a19b61ea/1067ba8a279247a487584c343b20ef3a/FLAG0655ed36a [2025-03-16 19:43:52,855 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a19b61ea/1067ba8a279247a487584c343b20ef3a [2025-03-16 19:43:52,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 19:43:52,859 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 19:43:52,860 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 19:43:52,860 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 19:43:52,863 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 19:43:52,864 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:43:52" (1/1) ... [2025-03-16 19:43:52,866 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ff858a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:43:52, skipping insertion in model container [2025-03-16 19:43:52,866 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:43:52" (1/1) ... [2025-03-16 19:43:52,895 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 19:43:53,127 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_time_var_mutex.i[23611,23624] [2025-03-16 19:43:53,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:43:53,216 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 19:43:53,232 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_time_var_mutex.i[23611,23624] [2025-03-16 19:43:53,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:43:53,315 INFO L204 MainTranslator]: Completed translation [2025-03-16 19:43:53,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:43:53 WrapperNode [2025-03-16 19:43:53,316 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 19:43:53,317 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 19:43:53,317 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 19:43:53,317 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 19:43:53,321 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:43:53" (1/1) ... [2025-03-16 19:43:53,347 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:43:53" (1/1) ... [2025-03-16 19:43:53,386 INFO L138 Inliner]: procedures = 145, calls = 326, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 529 [2025-03-16 19:43:53,386 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 19:43:53,387 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 19:43:53,389 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 19:43:53,389 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 19:43:53,395 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:43:53" (1/1) ... [2025-03-16 19:43:53,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:43:53" (1/1) ... [2025-03-16 19:43:53,402 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:43:53" (1/1) ... [2025-03-16 19:43:53,440 INFO L175 MemorySlicer]: Split 173 memory accesses to 19 slices as follows [2, 5, 8, 8, 17, 8, 29, 21, 7, 8, 8, 6, 5, 0, 5, 5, 13, 5, 13]. 17 percent of accesses are in the largest equivalence class. The 46 initializations are split as follows [2, 0, 3, 3, 6, 3, 9, 9, 3, 3, 3, 2, 0, 0, 0, 0, 0, 0, 0]. The 43 writes are split as follows [0, 1, 2, 2, 5, 2, 11, 6, 2, 2, 2, 2, 1, 0, 1, 1, 1, 1, 1]. [2025-03-16 19:43:53,441 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:43:53" (1/1) ... [2025-03-16 19:43:53,441 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:43:53" (1/1) ... [2025-03-16 19:43:53,471 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:43:53" (1/1) ... [2025-03-16 19:43:53,472 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:43:53" (1/1) ... [2025-03-16 19:43:53,479 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:43:53" (1/1) ... [2025-03-16 19:43:53,485 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:43:53" (1/1) ... [2025-03-16 19:43:53,497 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 19:43:53,498 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 19:43:53,498 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 19:43:53,498 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 19:43:53,502 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:43:53" (1/1) ... [2025-03-16 19:43:53,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:43:53,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:43:53,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 19:43:53,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 19:43:53,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-16 19:43:53,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-16 19:43:53,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-16 19:43:53,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-16 19:43:53,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-16 19:43:53,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-16 19:43:53,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-16 19:43:53,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-16 19:43:53,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-03-16 19:43:53,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2025-03-16 19:43:53,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2025-03-16 19:43:53,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2025-03-16 19:43:53,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2025-03-16 19:43:53,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2025-03-16 19:43:53,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2025-03-16 19:43:53,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2025-03-16 19:43:53,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2025-03-16 19:43:53,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2025-03-16 19:43:53,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#18 [2025-03-16 19:43:53,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-16 19:43:53,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-16 19:43:53,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-16 19:43:53,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-16 19:43:53,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-16 19:43:53,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-16 19:43:53,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-16 19:43:53,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-16 19:43:53,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-03-16 19:43:53,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2025-03-16 19:43:53,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2025-03-16 19:43:53,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2025-03-16 19:43:53,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2025-03-16 19:43:53,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2025-03-16 19:43:53,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2025-03-16 19:43:53,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2025-03-16 19:43:53,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2025-03-16 19:43:53,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#17 [2025-03-16 19:43:53,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#18 [2025-03-16 19:43:53,561 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-16 19:43:53,561 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-16 19:43:53,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 19:43:53,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-16 19:43:53,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-16 19:43:53,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-16 19:43:53,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#16 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#17 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#18 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_init [2025-03-16 19:43:53,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_init [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2025-03-16 19:43:53,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2025-03-16 19:43:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#16 [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#17 [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#18 [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2025-03-16 19:43:53,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2025-03-16 19:43:53,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#16 [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#17 [2025-03-16 19:43:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#18 [2025-03-16 19:43:53,566 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2025-03-16 19:43:53,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2025-03-16 19:43:53,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 19:43:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 19:43:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 19:43:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-16 19:43:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-16 19:43:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-16 19:43:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-16 19:43:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-16 19:43:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-16 19:43:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-16 19:43:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-16 19:43:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-16 19:43:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-16 19:43:53,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-16 19:43:53,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-16 19:43:53,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-16 19:43:53,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-16 19:43:53,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-16 19:43:53,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-16 19:43:53,568 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_destroy [2025-03-16 19:43:53,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_destroy [2025-03-16 19:43:53,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 19:43:53,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 19:43:53,784 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 19:43:53,785 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 19:43:55,416 INFO L? ?]: Removed 66 outVars from TransFormulas that were not future-live. [2025-03-16 19:43:55,416 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 19:43:55,427 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 19:43:55,429 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 19:43:55,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:43:55 BoogieIcfgContainer [2025-03-16 19:43:55,429 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 19:43:55,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 19:43:55,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 19:43:55,434 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 19:43:55,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 07:43:52" (1/3) ... [2025-03-16 19:43:55,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c6049f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:43:55, skipping insertion in model container [2025-03-16 19:43:55,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:43:53" (2/3) ... [2025-03-16 19:43:55,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c6049f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:43:55, skipping insertion in model container [2025-03-16 19:43:55,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:43:55" (3/3) ... [2025-03-16 19:43:55,438 INFO L128 eAbstractionObserver]: Analyzing ICFG cs_time_var_mutex.i [2025-03-16 19:43:55,448 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 19:43:55,451 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG cs_time_var_mutex.i that has 8 procedures, 141 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-03-16 19:43:55,496 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 19:43:55,503 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;@37ee18dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 19:43:55,503 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 19:43:55,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 87 states have (on average 1.3333333333333333) internal successors, (116), 88 states have internal predecessors, (116), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2025-03-16 19:43:55,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-16 19:43:55,515 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:43:55,516 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:43:55,516 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:43:55,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:43:55,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1529539240, now seen corresponding path program 1 times [2025-03-16 19:43:55,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:43:55,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139380862] [2025-03-16 19:43:55,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:43:55,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:43:55,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-16 19:43:55,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-16 19:43:55,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:43:55,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:43:56,164 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2025-03-16 19:43:56,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:43:56,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139380862] [2025-03-16 19:43:56,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139380862] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:43:56,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:43:56,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:43:56,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472904899] [2025-03-16 19:43:56,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:43:56,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:43:56,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:43:56,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:43:56,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:43:56,192 INFO L87 Difference]: Start difference. First operand has 141 states, 87 states have (on average 1.3333333333333333) internal successors, (116), 88 states have internal predecessors, (116), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2025-03-16 19:44:00,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-16 19:44:00,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:44:00,288 INFO L93 Difference]: Finished difference Result 281 states and 450 transitions. [2025-03-16 19:44:00,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:44:00,290 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), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2025-03-16 19:44:00,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:44:00,295 INFO L225 Difference]: With dead ends: 281 [2025-03-16 19:44:00,295 INFO L226 Difference]: Without dead ends: 140 [2025-03-16 19:44:00,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:44:00,300 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 2 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:44:00,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 399 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2025-03-16 19:44:00,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2025-03-16 19:44:00,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2025-03-16 19:44:00,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 86 states have (on average 1.302325581395349) internal successors, (112), 86 states have internal predecessors, (112), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2025-03-16 19:44:00,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 202 transitions. [2025-03-16 19:44:00,342 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 202 transitions. Word has length 142 [2025-03-16 19:44:00,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:44:00,343 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 202 transitions. [2025-03-16 19:44:00,343 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), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2025-03-16 19:44:00,343 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 202 transitions. [2025-03-16 19:44:00,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-16 19:44:00,347 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:44:00,347 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:44:00,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 19:44:00,348 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:44:00,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:44:00,348 INFO L85 PathProgramCache]: Analyzing trace with hash -837241516, now seen corresponding path program 1 times [2025-03-16 19:44:00,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:44:00,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109764550] [2025-03-16 19:44:00,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:44:00,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:44:00,444 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-16 19:44:00,481 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-16 19:44:00,481 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:44:00,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:44:00,653 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2025-03-16 19:44:00,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:44:00,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109764550] [2025-03-16 19:44:00,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109764550] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:44:00,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:44:00,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:44:00,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965457395] [2025-03-16 19:44:00,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:44:00,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:44:00,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:44:00,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:44:00,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:44:00,655 INFO L87 Difference]: Start difference. First operand 139 states and 202 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, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2025-03-16 19:44:00,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:44:00,705 INFO L93 Difference]: Finished difference Result 277 states and 404 transitions. [2025-03-16 19:44:00,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:44:00,705 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, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 144 [2025-03-16 19:44:00,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:44:00,707 INFO L225 Difference]: With dead ends: 277 [2025-03-16 19:44:00,707 INFO L226 Difference]: Without dead ends: 140 [2025-03-16 19:44:00,708 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:44:00,708 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 0 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:44:00,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 397 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:44:00,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2025-03-16 19:44:00,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2025-03-16 19:44:00,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 87 states have (on average 1.2988505747126438) internal successors, (113), 87 states have internal predecessors, (113), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2025-03-16 19:44:00,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 203 transitions. [2025-03-16 19:44:00,725 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 203 transitions. Word has length 144 [2025-03-16 19:44:00,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:44:00,726 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 203 transitions. [2025-03-16 19:44:00,727 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, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2025-03-16 19:44:00,727 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 203 transitions. [2025-03-16 19:44:00,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-03-16 19:44:00,729 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:44:00,730 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:44:00,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 19:44:00,730 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:44:00,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:44:00,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1305317365, now seen corresponding path program 1 times [2025-03-16 19:44:00,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:44:00,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113404373] [2025-03-16 19:44:00,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:44:00,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:44:00,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-16 19:44:00,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-16 19:44:00,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:44:00,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:44:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2025-03-16 19:44:01,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:44:01,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113404373] [2025-03-16 19:44:01,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113404373] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:44:01,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402415057] [2025-03-16 19:44:01,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:44:01,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:44:01,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:44:01,017 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:44:01,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 19:44:01,281 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-16 19:44:01,409 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-16 19:44:01,409 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:44:01,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:44:01,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 19:44:01,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:44:01,455 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2025-03-16 19:44:01,455 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 19:44:01,612 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2025-03-16 19:44:01,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402415057] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 19:44:01,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 19:44:01,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2025-03-16 19:44:01,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566042168] [2025-03-16 19:44:01,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 19:44:01,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:44:01,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:44:01,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:44:01,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:44:01,616 INFO L87 Difference]: Start difference. First operand 140 states and 203 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 19:44:01,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:44:01,685 INFO L93 Difference]: Finished difference Result 280 states and 408 transitions. [2025-03-16 19:44:01,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:44:01,686 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 145 [2025-03-16 19:44:01,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:44:01,688 INFO L225 Difference]: With dead ends: 280 [2025-03-16 19:44:01,688 INFO L226 Difference]: Without dead ends: 142 [2025-03-16 19:44:01,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 287 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:44:01,689 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 0 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:44:01,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 791 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:44:01,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2025-03-16 19:44:01,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2025-03-16 19:44:01,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 89 states have (on average 1.2921348314606742) internal successors, (115), 89 states have internal predecessors, (115), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2025-03-16 19:44:01,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 205 transitions. [2025-03-16 19:44:01,715 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 205 transitions. Word has length 145 [2025-03-16 19:44:01,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:44:01,715 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 205 transitions. [2025-03-16 19:44:01,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 19:44:01,715 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 205 transitions. [2025-03-16 19:44:01,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-16 19:44:01,719 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:44:01,719 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:44:01,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-16 19:44:01,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:44:01,920 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:44:01,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:44:01,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1780091605, now seen corresponding path program 2 times [2025-03-16 19:44:01,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:44:01,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581396867] [2025-03-16 19:44:01,921 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 19:44:01,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:44:02,033 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 147 statements into 2 equivalence classes. [2025-03-16 19:44:02,064 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 147 statements. [2025-03-16 19:44:02,064 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-16 19:44:02,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:44:02,232 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2025-03-16 19:44:02,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:44:02,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581396867] [2025-03-16 19:44:02,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581396867] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:44:02,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:44:02,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:44:02,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512104122] [2025-03-16 19:44:02,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:44:02,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:44:02,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:44:02,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:44:02,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:44:02,234 INFO L87 Difference]: Start difference. First operand 142 states and 205 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2025-03-16 19:44:02,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:44:02,296 INFO L93 Difference]: Finished difference Result 275 states and 404 transitions. [2025-03-16 19:44:02,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:44:02,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 147 [2025-03-16 19:44:02,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:44:02,301 INFO L225 Difference]: With dead ends: 275 [2025-03-16 19:44:02,303 INFO L226 Difference]: Without dead ends: 225 [2025-03-16 19:44:02,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:44:02,304 INFO L435 NwaCegarLoop]: 237 mSDtfsCounter, 142 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:44:02,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 665 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:44:02,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2025-03-16 19:44:02,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2025-03-16 19:44:02,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 143 states have (on average 1.3286713286713288) internal successors, (190), 143 states have internal predecessors, (190), 67 states have call successors, (67), 14 states have call predecessors, (67), 14 states have return successors, (73), 67 states have call predecessors, (73), 67 states have call successors, (73) [2025-03-16 19:44:02,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 330 transitions. [2025-03-16 19:44:02,355 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 330 transitions. Word has length 147 [2025-03-16 19:44:02,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:44:02,356 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 330 transitions. [2025-03-16 19:44:02,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2025-03-16 19:44:02,356 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 330 transitions. [2025-03-16 19:44:02,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2025-03-16 19:44:02,360 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:44:02,360 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 29, 7, 7, 7, 7, 7, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:44:02,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 19:44:02,360 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:44:02,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:44:02,361 INFO L85 PathProgramCache]: Analyzing trace with hash 708762204, now seen corresponding path program 1 times [2025-03-16 19:44:02,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:44:02,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13248040] [2025-03-16 19:44:02,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:44:02,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:44:02,442 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 261 statements into 1 equivalence classes. [2025-03-16 19:44:02,461 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 261 of 261 statements. [2025-03-16 19:44:02,461 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:44:02,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:44:02,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1743 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1742 trivial. 0 not checked. [2025-03-16 19:44:02,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:44:02,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13248040] [2025-03-16 19:44:02,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13248040] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:44:02,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677542975] [2025-03-16 19:44:02,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:44:02,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:44:02,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:44:02,694 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:44:02,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 19:44:02,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 261 statements into 1 equivalence classes. [2025-03-16 19:44:03,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 261 of 261 statements. [2025-03-16 19:44:03,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:44:03,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:44:03,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 1697 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 19:44:03,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:44:03,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1743 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1742 trivial. 0 not checked. [2025-03-16 19:44:03,208 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 19:44:03,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1743 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1742 trivial. 0 not checked. [2025-03-16 19:44:03,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677542975] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 19:44:03,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 19:44:03,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 6 [2025-03-16 19:44:03,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597282755] [2025-03-16 19:44:03,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 19:44:03,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:44:03,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:44:03,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:44:03,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:44:03,511 INFO L87 Difference]: Start difference. First operand 225 states and 330 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2025-03-16 19:44:07,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-16 19:44:09,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-16 19:44:13,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-16 19:44:17,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-16 19:44:18,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:44:18,011 INFO L93 Difference]: Finished difference Result 453 states and 665 transitions. [2025-03-16 19:44:18,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:44:18,013 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) Word has length 261 [2025-03-16 19:44:18,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:44:18,015 INFO L225 Difference]: With dead ends: 453 [2025-03-16 19:44:18,015 INFO L226 Difference]: Without dead ends: 235 [2025-03-16 19:44:18,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 519 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:44:18,016 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 2 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:44:18,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 394 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 3 Unknown, 0 Unchecked, 14.5s Time] [2025-03-16 19:44:18,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2025-03-16 19:44:18,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2025-03-16 19:44:18,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 153 states have (on average 1.3202614379084967) internal successors, (202), 153 states have internal predecessors, (202), 67 states have call successors, (67), 14 states have call predecessors, (67), 14 states have return successors, (73), 67 states have call predecessors, (73), 67 states have call successors, (73) [2025-03-16 19:44:18,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 342 transitions. [2025-03-16 19:44:18,032 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 342 transitions. Word has length 261 [2025-03-16 19:44:18,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:44:18,032 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 342 transitions. [2025-03-16 19:44:18,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2025-03-16 19:44:18,033 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 342 transitions. [2025-03-16 19:44:18,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2025-03-16 19:44:18,035 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:44:18,035 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 29, 9, 7, 7, 7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:44:18,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-16 19:44:18,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:44:18,240 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:44:18,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:44:18,240 INFO L85 PathProgramCache]: Analyzing trace with hash 2096721596, now seen corresponding path program 2 times [2025-03-16 19:44:18,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:44:18,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845772549] [2025-03-16 19:44:18,241 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 19:44:18,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:44:18,346 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 271 statements into 2 equivalence classes. [2025-03-16 19:44:18,371 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 19 of 271 statements. [2025-03-16 19:44:18,372 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-16 19:44:18,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:44:18,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1808 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1808 trivial. 0 not checked. [2025-03-16 19:44:18,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:44:18,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845772549] [2025-03-16 19:44:18,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845772549] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:44:18,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:44:18,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:44:18,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023307234] [2025-03-16 19:44:18,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:44:18,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:44:18,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:44:18,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:44:18,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:44:18,585 INFO L87 Difference]: Start difference. First operand 235 states and 342 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2025-03-16 19:44:22,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-16 19:44:26,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-16 19:44:26,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:44:26,715 INFO L93 Difference]: Finished difference Result 645 states and 948 transitions. [2025-03-16 19:44:26,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:44:26,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 271 [2025-03-16 19:44:26,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:44:26,719 INFO L225 Difference]: With dead ends: 645 [2025-03-16 19:44:26,719 INFO L226 Difference]: Without dead ends: 443 [2025-03-16 19:44:26,722 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:44:26,723 INFO L435 NwaCegarLoop]: 324 mSDtfsCounter, 186 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:44:26,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 832 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2025-03-16 19:44:26,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2025-03-16 19:44:26,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 439. [2025-03-16 19:44:26,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 279 states have (on average 1.3189964157706093) internal successors, (368), 279 states have internal predecessors, (368), 131 states have call successors, (131), 28 states have call predecessors, (131), 28 states have return successors, (150), 131 states have call predecessors, (150), 131 states have call successors, (150) [2025-03-16 19:44:26,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 649 transitions. [2025-03-16 19:44:26,759 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 649 transitions. Word has length 271 [2025-03-16 19:44:26,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:44:26,759 INFO L471 AbstractCegarLoop]: Abstraction has 439 states and 649 transitions. [2025-03-16 19:44:26,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2025-03-16 19:44:26,759 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 649 transitions. [2025-03-16 19:44:26,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2025-03-16 19:44:26,763 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:44:26,763 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 29, 9, 7, 7, 7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:44:26,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 19:44:26,763 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:44:26,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:44:26,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1997934564, now seen corresponding path program 1 times [2025-03-16 19:44:26,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:44:26,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880989564] [2025-03-16 19:44:26,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:44:26,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:44:26,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 271 statements into 1 equivalence classes. [2025-03-16 19:44:26,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 271 of 271 statements. [2025-03-16 19:44:26,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:44:26,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:44:27,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1808 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1808 trivial. 0 not checked. [2025-03-16 19:44:27,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:44:27,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880989564] [2025-03-16 19:44:27,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880989564] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:44:27,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:44:27,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:44:27,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411528880] [2025-03-16 19:44:27,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:44:27,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:44:27,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:44:27,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:44:27,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:44:27,486 INFO L87 Difference]: Start difference. First operand 439 states and 649 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2025-03-16 19:44:31,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-16 19:44:35,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-16 19:44:35,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:44:35,627 INFO L93 Difference]: Finished difference Result 810 states and 1185 transitions. [2025-03-16 19:44:35,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:44:35,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 271 [2025-03-16 19:44:35,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:44:35,633 INFO L225 Difference]: With dead ends: 810 [2025-03-16 19:44:35,633 INFO L226 Difference]: Without dead ends: 398 [2025-03-16 19:44:35,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:44:35,635 INFO L435 NwaCegarLoop]: 326 mSDtfsCounter, 182 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:44:35,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 837 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2025-03-16 19:44:35,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2025-03-16 19:44:35,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 394. [2025-03-16 19:44:35,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 251 states have (on average 1.2669322709163346) internal successors, (318), 251 states have internal predecessors, (318), 117 states have call successors, (117), 25 states have call predecessors, (117), 25 states have return successors, (129), 117 states have call predecessors, (129), 117 states have call successors, (129) [2025-03-16 19:44:35,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 564 transitions. [2025-03-16 19:44:35,667 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 564 transitions. Word has length 271 [2025-03-16 19:44:35,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:44:35,667 INFO L471 AbstractCegarLoop]: Abstraction has 394 states and 564 transitions. [2025-03-16 19:44:35,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2025-03-16 19:44:35,668 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 564 transitions. [2025-03-16 19:44:35,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2025-03-16 19:44:35,672 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:44:35,672 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 29, 9, 7, 7, 7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:44:35,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 19:44:35,672 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:44:35,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:44:35,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1545600731, now seen corresponding path program 1 times [2025-03-16 19:44:35,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:44:35,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179095542] [2025-03-16 19:44:35,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:44:35,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:44:35,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 271 statements into 1 equivalence classes. [2025-03-16 19:44:35,863 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 271 of 271 statements. [2025-03-16 19:44:35,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:44:35,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:44:36,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1808 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1804 trivial. 0 not checked. [2025-03-16 19:44:36,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:44:36,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179095542] [2025-03-16 19:44:36,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179095542] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:44:36,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179835136] [2025-03-16 19:44:36,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:44:36,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:44:36,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:44:36,268 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:44:36,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 19:44:36,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 271 statements into 1 equivalence classes. [2025-03-16 19:44:36,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 271 of 271 statements. [2025-03-16 19:44:36,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:44:36,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:44:36,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 1992 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-16 19:44:36,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:44:37,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1808 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 1537 trivial. 0 not checked. [2025-03-16 19:44:37,013 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 19:44:37,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179835136] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:44:37,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 19:44:37,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2025-03-16 19:44:37,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111668944] [2025-03-16 19:44:37,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:44:37,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:44:37,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:44:37,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:44:37,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-03-16 19:44:37,014 INFO L87 Difference]: Start difference. First operand 394 states and 564 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2025-03-16 19:44:38,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:44:38,083 INFO L93 Difference]: Finished difference Result 1025 states and 1460 transitions. [2025-03-16 19:44:38,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:44:38,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) Word has length 271 [2025-03-16 19:44:38,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:44:38,088 INFO L225 Difference]: With dead ends: 1025 [2025-03-16 19:44:38,088 INFO L226 Difference]: Without dead ends: 637 [2025-03-16 19:44:38,090 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-03-16 19:44:38,090 INFO L435 NwaCegarLoop]: 241 mSDtfsCounter, 281 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:44:38,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 546 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-16 19:44:38,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2025-03-16 19:44:38,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 626. [2025-03-16 19:44:38,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 396 states have (on average 1.1944444444444444) internal successors, (473), 397 states have internal predecessors, (473), 182 states have call successors, (182), 39 states have call predecessors, (182), 47 states have return successors, (220), 189 states have call predecessors, (220), 182 states have call successors, (220) [2025-03-16 19:44:38,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 875 transitions. [2025-03-16 19:44:38,147 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 875 transitions. Word has length 271 [2025-03-16 19:44:38,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:44:38,147 INFO L471 AbstractCegarLoop]: Abstraction has 626 states and 875 transitions. [2025-03-16 19:44:38,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2025-03-16 19:44:38,148 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 875 transitions. [2025-03-16 19:44:38,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2025-03-16 19:44:38,152 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:44:38,153 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 29, 9, 7, 7, 7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:44:38,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-16 19:44:38,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:44:38,353 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:44:38,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:44:38,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1578157894, now seen corresponding path program 1 times [2025-03-16 19:44:38,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:44:38,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638896115] [2025-03-16 19:44:38,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:44:38,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:44:38,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 271 statements into 1 equivalence classes. [2025-03-16 19:44:38,493 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 271 of 271 statements. [2025-03-16 19:44:38,493 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:44:38,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:44:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1808 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1804 trivial. 0 not checked. [2025-03-16 19:44:38,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:44:38,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638896115] [2025-03-16 19:44:38,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638896115] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:44:38,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546732903] [2025-03-16 19:44:38,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:44:38,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:44:38,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:44:38,855 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:44:38,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 19:44:39,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 271 statements into 1 equivalence classes. [2025-03-16 19:44:39,542 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 271 of 271 statements. [2025-03-16 19:44:39,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:44:39,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:44:39,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 1989 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-16 19:44:39,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:44:39,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1808 backedges. 616 proven. 4 refuted. 0 times theorem prover too weak. 1188 trivial. 0 not checked. [2025-03-16 19:44:39,704 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 19:44:40,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1808 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1804 trivial. 0 not checked. [2025-03-16 19:44:40,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546732903] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 19:44:40,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 19:44:40,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 11 [2025-03-16 19:44:40,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859364736] [2025-03-16 19:44:40,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 19:44:40,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-16 19:44:40,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:44:40,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-16 19:44:40,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2025-03-16 19:44:40,194 INFO L87 Difference]: Start difference. First operand 626 states and 875 transitions. Second operand has 11 states, 11 states have (on average 9.0) internal successors, (99), 11 states have internal predecessors, (99), 9 states have call successors, (72), 5 states have call predecessors, (72), 6 states have return successors, (73), 7 states have call predecessors, (73), 9 states have call successors, (73) [2025-03-16 19:44:44,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-16 19:44:48,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-16 19:44:49,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:44:49,089 INFO L93 Difference]: Finished difference Result 1286 states and 1824 transitions. [2025-03-16 19:44:49,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 19:44:49,089 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.0) internal successors, (99), 11 states have internal predecessors, (99), 9 states have call successors, (72), 5 states have call predecessors, (72), 6 states have return successors, (73), 7 states have call predecessors, (73), 9 states have call successors, (73) Word has length 271 [2025-03-16 19:44:49,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:44:49,096 INFO L225 Difference]: With dead ends: 1286 [2025-03-16 19:44:49,096 INFO L226 Difference]: Without dead ends: 704 [2025-03-16 19:44:49,098 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2025-03-16 19:44:49,098 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 274 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 173 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2025-03-16 19:44:49,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 782 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 679 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2025-03-16 19:44:49,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2025-03-16 19:44:49,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 679. [2025-03-16 19:44:49,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 441 states have (on average 1.2312925170068028) internal successors, (543), 443 states have internal predecessors, (543), 170 states have call successors, (170), 54 states have call predecessors, (170), 67 states have return successors, (236), 181 states have call predecessors, (236), 170 states have call successors, (236) [2025-03-16 19:44:49,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 949 transitions. [2025-03-16 19:44:49,157 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 949 transitions. Word has length 271 [2025-03-16 19:44:49,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:44:49,158 INFO L471 AbstractCegarLoop]: Abstraction has 679 states and 949 transitions. [2025-03-16 19:44:49,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.0) internal successors, (99), 11 states have internal predecessors, (99), 9 states have call successors, (72), 5 states have call predecessors, (72), 6 states have return successors, (73), 7 states have call predecessors, (73), 9 states have call successors, (73) [2025-03-16 19:44:49,158 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 949 transitions. [2025-03-16 19:44:49,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2025-03-16 19:44:49,162 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:44:49,162 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 29, 9, 7, 7, 7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:44:49,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-16 19:44:49,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:44:49,363 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:44:49,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:44:49,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1242000506, now seen corresponding path program 1 times [2025-03-16 19:44:49,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:44:49,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385884735] [2025-03-16 19:44:49,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:44:49,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:44:49,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 271 statements into 1 equivalence classes. [2025-03-16 19:44:49,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 271 of 271 statements. [2025-03-16 19:44:49,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:44:49,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:44:51,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1808 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1804 trivial. 0 not checked. [2025-03-16 19:44:51,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:44:51,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385884735] [2025-03-16 19:44:51,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385884735] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:44:51,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286294887] [2025-03-16 19:44:51,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:44:51,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:44:51,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:44:51,295 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:44:51,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-16 19:44:51,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 271 statements into 1 equivalence classes. [2025-03-16 19:44:51,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 271 of 271 statements. [2025-03-16 19:44:51,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:44:51,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:44:51,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 2087 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-03-16 19:44:51,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:44:52,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2025-03-16 19:44:55,913 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2025-03-16 19:44:55,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 15 [2025-03-16 19:44:56,976 INFO L349 Elim1Store]: treesize reduction 35, result has 27.1 percent of original size [2025-03-16 19:44:56,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2025-03-16 19:45:21,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1808 backedges. 742 proven. 4 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2025-03-16 19:45:21,466 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 19:45:21,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2025-03-16 19:45:21,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2025-03-16 19:45:22,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2025-03-16 19:45:22,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2025-03-16 19:45:22,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2025-03-16 19:45:22,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2025-03-16 19:45:22,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1808 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1804 trivial. 0 not checked. [2025-03-16 19:45:22,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286294887] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 19:45:22,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 19:45:22,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 9] total 35 [2025-03-16 19:45:22,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027388747] [2025-03-16 19:45:22,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 19:45:22,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-03-16 19:45:22,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:45:22,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-03-16 19:45:22,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1062, Unknown=1, NotChecked=0, Total=1190 [2025-03-16 19:45:22,428 INFO L87 Difference]: Start difference. First operand 679 states and 949 transitions. Second operand has 35 states, 33 states have (on average 4.545454545454546) internal successors, (150), 33 states have internal predecessors, (150), 16 states have call successors, (85), 10 states have call predecessors, (85), 13 states have return successors, (86), 16 states have call predecessors, (86), 16 states have call successors, (86) [2025-03-16 19:45:26,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []