./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:46:35,504 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:46:35,567 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:46:35,572 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:46:35,572 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:46:35,595 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:46:35,596 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:46:35,596 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:46:35,597 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:46:35,597 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:46:35,597 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:46:35,597 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:46:35,598 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:46:35,598 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:46:35,598 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:46:35,598 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:46:35,598 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:46:35,599 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:46:35,599 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:46:35,599 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:46:35,599 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:46:35,599 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:46:35,599 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:46:35,600 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:46:35,600 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:46:35,600 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:46:35,600 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:46:35,600 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:46:35,600 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:46:35,600 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:46:35,600 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:46:35,600 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:46:35,600 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:46:35,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:46:35,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:46:35,600 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:46:35,600 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:46:35,601 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:46:35,601 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:46:35,601 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:46:35,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:46:35,601 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:46:35,601 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:46:35,601 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:46:35,601 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:46:35,601 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-jdk21/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 ! overflow) ) 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 -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b [2025-02-06 18:46:35,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:46:35,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:46:35,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:46:35,842 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:46:35,843 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:46:35,845 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2025-02-06 18:46:36,983 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7d3705e26/c4f05f49005a4a48b23c067c4bdf2727/FLAGc66cbefde [2025-02-06 18:46:37,309 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:46:37,312 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2025-02-06 18:46:37,330 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7d3705e26/c4f05f49005a4a48b23c067c4bdf2727/FLAGc66cbefde [2025-02-06 18:46:37,347 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7d3705e26/c4f05f49005a4a48b23c067c4bdf2727 [2025-02-06 18:46:37,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:46:37,352 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:46:37,354 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:46:37,355 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:46:37,359 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:46:37,360 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:46:37" (1/1) ... [2025-02-06 18:46:37,360 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3105af8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:46:37, skipping insertion in model container [2025-02-06 18:46:37,361 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:46:37" (1/1) ... [2025-02-06 18:46:37,397 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:46:37,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:46:37,696 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:46:37,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:46:37,789 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:46:37,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:46:37 WrapperNode [2025-02-06 18:46:37,790 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:46:37,791 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:46:37,791 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:46:37,791 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:46:37,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:46:37" (1/1) ... [2025-02-06 18:46:37,808 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:46:37" (1/1) ... [2025-02-06 18:46:37,825 INFO L138 Inliner]: procedures = 279, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 260 [2025-02-06 18:46:37,826 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:46:37,826 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:46:37,826 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:46:37,826 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:46:37,835 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:46:37" (1/1) ... [2025-02-06 18:46:37,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:46:37" (1/1) ... [2025-02-06 18:46:37,839 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:46:37" (1/1) ... [2025-02-06 18:46:37,859 INFO L175 MemorySlicer]: Split 30 memory accesses to 6 slices as follows [2, 5, 5, 2, 14, 2]. 47 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0, 0, 0]. The 10 writes are split as follows [0, 0, 0, 1, 8, 1]. [2025-02-06 18:46:37,859 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:46:37" (1/1) ... [2025-02-06 18:46:37,859 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:46:37" (1/1) ... [2025-02-06 18:46:37,867 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:46:37" (1/1) ... [2025-02-06 18:46:37,868 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:46:37" (1/1) ... [2025-02-06 18:46:37,870 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:46:37" (1/1) ... [2025-02-06 18:46:37,871 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:46:37" (1/1) ... [2025-02-06 18:46:37,874 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:46:37,878 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:46:37,878 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:46:37,878 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:46:37,879 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:46:37" (1/1) ... [2025-02-06 18:46:37,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:46:37,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:46:37,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 18:46:37,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 18:46:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 18:46:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 18:46:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 18:46:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-06 18:46:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-02-06 18:46:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-02-06 18:46:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-02-06 18:46:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2025-02-06 18:46:37,926 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2025-02-06 18:46:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 18:46:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 18:46:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:46:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:46:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 18:46:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-06 18:46:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-06 18:46:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-02-06 18:46:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2025-02-06 18:46:37,927 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2025-02-06 18:46:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:46:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:46:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 18:46:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-06 18:46:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-06 18:46:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-06 18:46:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 18:46:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 18:46:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:46:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 18:46:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 18:46:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 18:46:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-02-06 18:46:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-02-06 18:46:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-02-06 18:46:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:46:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:46:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 18:46:37,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-06 18:46:37,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-06 18:46:37,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-06 18:46:37,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:46:37,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:46:37,931 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:46:38,087 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:46:38,089 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:46:38,366 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1043: havoc main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset; [2025-02-06 18:46:38,367 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1043-1: SUMMARY for call ULTIMATE.dealloc(main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset); srcloc: null [2025-02-06 18:46:38,367 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1042: havoc main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset; [2025-02-06 18:46:38,367 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1042-1: SUMMARY for call ULTIMATE.dealloc(main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset); srcloc: null [2025-02-06 18:46:38,368 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:46:38,368 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:46:38,568 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:46:38,569 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:46:38,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:46:38 BoogieIcfgContainer [2025-02-06 18:46:38,569 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:46:38,570 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:46:38,571 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:46:38,573 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:46:38,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:46:37" (1/3) ... [2025-02-06 18:46:38,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44209af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:46:38, skipping insertion in model container [2025-02-06 18:46:38,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:46:37" (2/3) ... [2025-02-06 18:46:38,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44209af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:46:38, skipping insertion in model container [2025-02-06 18:46:38,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:46:38" (3/3) ... [2025-02-06 18:46:38,575 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2025-02-06 18:46:38,586 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:46:38,587 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_81-list_racing.i that has 3 procedures, 76 locations, 1 initial locations, 10 loop locations, and 12 error locations. [2025-02-06 18:46:38,587 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:46:38,636 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-06 18:46:38,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 94 transitions, 208 flow [2025-02-06 18:46:38,724 INFO L124 PetriNetUnfolderBase]: 34/197 cut-off events. [2025-02-06 18:46:38,725 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-02-06 18:46:38,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 197 events. 34/197 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 866 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 99. Up to 8 conditions per place. [2025-02-06 18:46:38,732 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 94 transitions, 208 flow [2025-02-06 18:46:38,735 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 94 transitions, 208 flow [2025-02-06 18:46:38,739 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:46:38,749 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;@136800e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:46:38,750 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-02-06 18:46:38,759 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:46:38,760 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2025-02-06 18:46:38,760 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:46:38,760 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:46:38,761 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 18:46:38,761 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:46:38,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:46:38,766 INFO L85 PathProgramCache]: Analyzing trace with hash 609101447, now seen corresponding path program 1 times [2025-02-06 18:46:38,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:46:38,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675612510] [2025-02-06 18:46:38,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:38,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:46:38,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 18:46:38,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 18:46:38,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:38,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:39,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:39,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:46:39,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675612510] [2025-02-06 18:46:39,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675612510] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:46:39,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:46:39,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:46:39,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630887104] [2025-02-06 18:46:39,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:46:39,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:46:39,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:46:39,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:46:39,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:46:39,144 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 94 [2025-02-06 18:46:39,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 94 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:46:39,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:46:39,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 94 [2025-02-06 18:46:39,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:46:39,757 INFO L124 PetriNetUnfolderBase]: 2206/4643 cut-off events. [2025-02-06 18:46:39,758 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2025-02-06 18:46:39,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8226 conditions, 4643 events. 2206/4643 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 31199 event pairs, 1078 based on Foata normal form. 501/4395 useless extension candidates. Maximal degree in co-relation 7262. Up to 3485 conditions per place. [2025-02-06 18:46:39,784 INFO L140 encePairwiseOnDemand]: 77/94 looper letters, 56 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2025-02-06 18:46:39,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 92 transitions, 322 flow [2025-02-06 18:46:39,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:46:39,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:46:39,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 205 transitions. [2025-02-06 18:46:39,793 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5452127659574468 [2025-02-06 18:46:39,795 INFO L175 Difference]: Start difference. First operand has 82 places, 94 transitions, 208 flow. Second operand 4 states and 205 transitions. [2025-02-06 18:46:39,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 92 transitions, 322 flow [2025-02-06 18:46:39,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 92 transitions, 322 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:46:39,802 INFO L231 Difference]: Finished difference. Result has 84 places, 81 transitions, 192 flow [2025-02-06 18:46:39,805 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=84, PETRI_TRANSITIONS=81} [2025-02-06 18:46:39,809 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 2 predicate places. [2025-02-06 18:46:39,809 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 81 transitions, 192 flow [2025-02-06 18:46:39,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:46:39,809 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:46:39,809 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-02-06 18:46:39,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:46:39,810 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:46:39,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:46:39,810 INFO L85 PathProgramCache]: Analyzing trace with hash -495055337, now seen corresponding path program 1 times [2025-02-06 18:46:39,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:46:39,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718396080] [2025-02-06 18:46:39,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:39,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:46:39,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 18:46:39,885 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 18:46:39,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:39,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:46:39,885 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:46:39,889 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 18:46:39,908 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 18:46:39,910 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:39,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:46:39,936 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:46:39,936 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 18:46:39,937 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2025-02-06 18:46:39,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2025-02-06 18:46:39,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2025-02-06 18:46:39,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2025-02-06 18:46:39,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2025-02-06 18:46:39,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2025-02-06 18:46:39,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2025-02-06 18:46:39,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2025-02-06 18:46:39,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2025-02-06 18:46:39,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2025-02-06 18:46:39,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2025-02-06 18:46:39,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2025-02-06 18:46:39,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2025-02-06 18:46:39,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 18 remaining) [2025-02-06 18:46:39,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2025-02-06 18:46:39,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2025-02-06 18:46:39,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2025-02-06 18:46:39,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2025-02-06 18:46:39,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 18:46:39,939 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-06 18:46:39,942 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 18:46:39,942 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-06 18:46:39,998 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2025-02-06 18:46:40,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 157 transitions, 358 flow [2025-02-06 18:46:40,053 INFO L124 PetriNetUnfolderBase]: 135/677 cut-off events. [2025-02-06 18:46:40,053 INFO L125 PetriNetUnfolderBase]: For 72/78 co-relation queries the response was YES. [2025-02-06 18:46:40,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 766 conditions, 677 events. 135/677 cut-off events. For 72/78 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4360 event pairs, 2 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 430. Up to 32 conditions per place. [2025-02-06 18:46:40,059 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 157 transitions, 358 flow [2025-02-06 18:46:40,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 157 transitions, 358 flow [2025-02-06 18:46:40,066 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:46:40,068 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;@136800e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:46:40,068 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2025-02-06 18:46:40,070 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:46:40,071 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2025-02-06 18:46:40,071 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:46:40,071 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:46:40,071 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 18:46:40,071 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:46:40,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:46:40,071 INFO L85 PathProgramCache]: Analyzing trace with hash 757074460, now seen corresponding path program 1 times [2025-02-06 18:46:40,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:46:40,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906413692] [2025-02-06 18:46:40,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:40,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:46:40,101 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 18:46:40,108 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 18:46:40,108 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:40,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:40,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:40,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:46:40,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906413692] [2025-02-06 18:46:40,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906413692] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:46:40,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:46:40,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:46:40,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752390561] [2025-02-06 18:46:40,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:46:40,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:46:40,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:46:40,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:46:40,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:46:40,191 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 157 [2025-02-06 18:46:40,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 157 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:46:40,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:46:40,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 157 [2025-02-06 18:46:40,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand