./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:48:16,590 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:48:16,662 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:48:16,668 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:48:16,670 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:48:16,688 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:48:16,689 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:48:16,689 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:48:16,690 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:48:16,690 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:48:16,691 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:48:16,691 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:48:16,691 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:48:16,692 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:48:16,692 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:48:16,692 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:48:16,693 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:48:16,693 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:48:16,694 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:48:16,694 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:48:16,694 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:48:16,695 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:48:16,695 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:48:16,695 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:48:16,696 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:48:16,696 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:48:16,696 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:48:16,697 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:48:16,697 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:48:16,697 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:48:16,698 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:48:16,698 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:48:16,698 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:48:16,698 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:48:16,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:48:16,699 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:48:16,699 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:48:16,700 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:48:16,700 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:48:16,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:48:16,700 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:48:16,710 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:48:16,710 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:48:16,710 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:48:16,710 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 [2024-11-17 07:48:16,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:48:16,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:48:16,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:48:16,979 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:48:16,980 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:48:16,982 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2024-11-17 07:48:18,461 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:48:18,706 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:48:18,706 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2024-11-17 07:48:18,724 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc9a67d1a/b401f03b55a04f9582967067029e5abc/FLAGe375beaa7 [2024-11-17 07:48:18,739 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc9a67d1a/b401f03b55a04f9582967067029e5abc [2024-11-17 07:48:18,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:48:18,744 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:48:18,747 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:48:18,747 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:48:18,752 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:48:18,753 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:48:18" (1/1) ... [2024-11-17 07:48:18,756 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68393a3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:18, skipping insertion in model container [2024-11-17 07:48:18,756 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:48:18" (1/1) ... [2024-11-17 07:48:18,801 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:48:19,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:48:19,265 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:48:19,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:48:19,362 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:48:19,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:19 WrapperNode [2024-11-17 07:48:19,363 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:48:19,365 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:48:19,365 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:48:19,365 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:48:19,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:19" (1/1) ... [2024-11-17 07:48:19,386 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:19" (1/1) ... [2024-11-17 07:48:19,407 INFO L138 Inliner]: procedures = 171, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2024-11-17 07:48:19,408 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:48:19,410 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:48:19,410 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:48:19,410 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:48:19,419 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:19" (1/1) ... [2024-11-17 07:48:19,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:19" (1/1) ... [2024-11-17 07:48:19,423 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:19" (1/1) ... [2024-11-17 07:48:19,446 INFO L175 MemorySlicer]: Split 20 memory accesses to 5 slices as follows [2, 5, 6, 5, 2]. 30 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 1, 5, 0]. The 3 writes are split as follows [0, 0, 2, 0, 1]. [2024-11-17 07:48:19,447 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:19" (1/1) ... [2024-11-17 07:48:19,447 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:19" (1/1) ... [2024-11-17 07:48:19,453 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:19" (1/1) ... [2024-11-17 07:48:19,454 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:19" (1/1) ... [2024-11-17 07:48:19,455 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:19" (1/1) ... [2024-11-17 07:48:19,457 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:19" (1/1) ... [2024-11-17 07:48:19,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:48:19,464 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:48:19,465 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:48:19,465 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:48:19,466 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:19" (1/1) ... [2024-11-17 07:48:19,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:48:19,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:48:19,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 07:48:19,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 07:48:19,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:48:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:48:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 07:48:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 07:48:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-17 07:48:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:48:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:48:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 07:48:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 07:48:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-17 07:48:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 07:48:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:48:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 07:48:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-17 07:48:19,534 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-17 07:48:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 07:48:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:48:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:48:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 07:48:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 07:48:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-17 07:48:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 07:48:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:48:19,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:48:19,537 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:48:19,678 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:48:19,680 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:48:19,829 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L709: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-17 07:48:19,829 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L709-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-17 07:48:19,901 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:48:19,901 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:48:20,073 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:48:20,074 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:48:20,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:48:20 BoogieIcfgContainer [2024-11-17 07:48:20,074 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:48:20,077 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:48:20,077 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:48:20,081 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:48:20,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:48:18" (1/3) ... [2024-11-17 07:48:20,083 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26dbf82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:48:20, skipping insertion in model container [2024-11-17 07:48:20,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:19" (2/3) ... [2024-11-17 07:48:20,084 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26dbf82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:48:20, skipping insertion in model container [2024-11-17 07:48:20,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:48:20" (3/3) ... [2024-11-17 07:48:20,085 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2024-11-17 07:48:20,108 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:48:20,109 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-17 07:48:20,109 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:48:20,164 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-17 07:48:20,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 66 transitions, 139 flow [2024-11-17 07:48:20,255 INFO L124 PetriNetUnfolderBase]: 15/85 cut-off events. [2024-11-17 07:48:20,257 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:48:20,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 85 events. 15/85 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 249 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2024-11-17 07:48:20,263 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 66 transitions, 139 flow [2024-11-17 07:48:20,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 65 transitions, 137 flow [2024-11-17 07:48:20,280 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:48:20,289 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;@d4477f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:48:20,292 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-17 07:48:20,303 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:48:20,304 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2024-11-17 07:48:20,304 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:48:20,304 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:20,305 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:48:20,306 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:48:20,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:20,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1130699227, now seen corresponding path program 1 times [2024-11-17 07:48:20,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:20,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733475133] [2024-11-17 07:48:20,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:20,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:20,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:48:20,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:20,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733475133] [2024-11-17 07:48:20,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733475133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:20,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:48:20,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:48:20,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538949642] [2024-11-17 07:48:20,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:20,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:48:20,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:20,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:48:20,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:48:20,821 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 66 [2024-11-17 07:48:20,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 65 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:20,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:20,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 66 [2024-11-17 07:48:20,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:21,055 INFO L124 PetriNetUnfolderBase]: 110/407 cut-off events. [2024-11-17 07:48:21,055 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:48:21,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 407 events. 110/407 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2131 event pairs, 80 based on Foata normal form. 124/492 useless extension candidates. Maximal degree in co-relation 637. Up to 209 conditions per place. [2024-11-17 07:48:21,064 INFO L140 encePairwiseOnDemand]: 50/66 looper letters, 44 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2024-11-17 07:48:21,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 76 transitions, 253 flow [2024-11-17 07:48:21,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:48:21,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:48:21,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 189 transitions. [2024-11-17 07:48:21,080 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7159090909090909 [2024-11-17 07:48:21,083 INFO L175 Difference]: Start difference. First operand has 58 places, 65 transitions, 137 flow. Second operand 4 states and 189 transitions. [2024-11-17 07:48:21,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 76 transitions, 253 flow [2024-11-17 07:48:21,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 253 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:48:21,093 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 123 flow [2024-11-17 07:48:21,096 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2024-11-17 07:48:21,101 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2024-11-17 07:48:21,101 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 123 flow [2024-11-17 07:48:21,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:21,101 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:21,102 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:48:21,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:48:21,102 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:48:21,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:21,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1974745717, now seen corresponding path program 1 times [2024-11-17 07:48:21,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:21,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410547217] [2024-11-17 07:48:21,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:21,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:48:21,130 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 07:48:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:48:21,175 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 07:48:21,176 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 07:48:21,177 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-17 07:48:21,179 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-17 07:48:21,180 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-17 07:48:21,180 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-17 07:48:21,180 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-11-17 07:48:21,180 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-17 07:48:21,181 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-11-17 07:48:21,181 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-11-17 07:48:21,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-11-17 07:48:21,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-17 07:48:21,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-17 07:48:21,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-17 07:48:21,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-17 07:48:21,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:48:21,183 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-17 07:48:21,187 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 07:48:21,187 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 07:48:21,212 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 07:48:21,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 101 transitions, 218 flow [2024-11-17 07:48:21,233 INFO L124 PetriNetUnfolderBase]: 28/161 cut-off events. [2024-11-17 07:48:21,233 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-17 07:48:21,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 161 events. 28/161 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 580 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 102. Up to 8 conditions per place. [2024-11-17 07:48:21,235 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 101 transitions, 218 flow [2024-11-17 07:48:21,237 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 101 transitions, 218 flow [2024-11-17 07:48:21,238 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:48:21,239 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;@d4477f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:48:21,240 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-17 07:48:21,244 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:48:21,244 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2024-11-17 07:48:21,244 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:48:21,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:21,244 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:48:21,245 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:48:21,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:21,250 INFO L85 PathProgramCache]: Analyzing trace with hash -176307300, now seen corresponding path program 1 times [2024-11-17 07:48:21,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:21,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28553035] [2024-11-17 07:48:21,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:21,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:21,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:48:21,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:21,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28553035] [2024-11-17 07:48:21,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28553035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:21,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:48:21,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:48:21,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818766712] [2024-11-17 07:48:21,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:21,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:48:21,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:21,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:48:21,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:48:21,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 101 [2024-11-17 07:48:21,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 101 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:21,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:21,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 101 [2024-11-17 07:48:21,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:22,436 INFO L124 PetriNetUnfolderBase]: 3478/8033 cut-off events. [2024-11-17 07:48:22,436 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-11-17 07:48:22,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13649 conditions, 8033 events. 3478/8033 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 71178 event pairs, 1628 based on Foata normal form. 2568/9850 useless extension candidates. Maximal degree in co-relation 1084. Up to 5512 conditions per place. [2024-11-17 07:48:22,499 INFO L140 encePairwiseOnDemand]: 79/101 looper letters, 62 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2024-11-17 07:48:22,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 110 transitions, 366 flow [2024-11-17 07:48:22,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:48:22,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:48:22,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2024-11-17 07:48:22,506 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6856435643564357 [2024-11-17 07:48:22,506 INFO L175 Difference]: Start difference. First operand has 88 places, 101 transitions, 218 flow. Second operand 4 states and 277 transitions. [2024-11-17 07:48:22,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 110 transitions, 366 flow [2024-11-17 07:48:22,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 110 transitions, 366 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:48:22,511 INFO L231 Difference]: Finished difference. Result has 93 places, 87 transitions, 210 flow [2024-11-17 07:48:22,511 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=93, PETRI_TRANSITIONS=87} [2024-11-17 07:48:22,512 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 5 predicate places. [2024-11-17 07:48:22,512 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 87 transitions, 210 flow [2024-11-17 07:48:22,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:22,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:22,513 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:48:22,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:48:22,513 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:48:22,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:22,514 INFO L85 PathProgramCache]: Analyzing trace with hash 712039338, now seen corresponding path program 1 times [2024-11-17 07:48:22,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:22,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256129847] [2024-11-17 07:48:22,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:22,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:22,651 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:48:22,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:22,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256129847] [2024-11-17 07:48:22,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256129847] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:48:22,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023185919] [2024-11-17 07:48:22,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:22,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:48:22,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:48:22,654 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:48:22,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:48:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:22,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:48:22,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:48:22,824 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:48:22,825 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:48:22,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023185919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:22,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:48:22,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:48:22,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555858374] [2024-11-17 07:48:22,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:22,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:48:22,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:22,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:48:22,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:48:22,843 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 101 [2024-11-17 07:48:22,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 87 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 46.5) internal successors, (279), 6 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:22,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:22,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 101 [2024-11-17 07:48:22,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:23,877 INFO L124 PetriNetUnfolderBase]: 3214/7253 cut-off events. [2024-11-17 07:48:23,877 INFO L125 PetriNetUnfolderBase]: For 672/672 co-relation queries the response was YES. [2024-11-17 07:48:23,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13101 conditions, 7253 events. 3214/7253 cut-off events. For 672/672 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 62058 event pairs, 372 based on Foata normal form. 144/7032 useless extension candidates. Maximal degree in co-relation 1081. Up to 2719 conditions per place. [2024-11-17 07:48:23,929 INFO L140 encePairwiseOnDemand]: 96/101 looper letters, 102 selfloop transitions, 6 changer transitions 0/153 dead transitions. [2024-11-17 07:48:23,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 153 transitions, 556 flow [2024-11-17 07:48:23,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:48:23,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:48:23,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 379 transitions. [2024-11-17 07:48:23,932 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6254125412541254 [2024-11-17 07:48:23,932 INFO L175 Difference]: Start difference. First operand has 93 places, 87 transitions, 210 flow. Second operand 6 states and 379 transitions. [2024-11-17 07:48:23,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 153 transitions, 556 flow [2024-11-17 07:48:23,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 153 transitions, 554 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:48:23,938 INFO L231 Difference]: Finished difference. Result has 96 places, 86 transitions, 216 flow [2024-11-17 07:48:23,938 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=96, PETRI_TRANSITIONS=86} [2024-11-17 07:48:23,940 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 8 predicate places. [2024-11-17 07:48:23,940 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 86 transitions, 216 flow [2024-11-17 07:48:23,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.5) internal successors, (279), 6 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:23,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:23,941 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:48:23,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 07:48:24,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:48:24,146 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:48:24,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:24,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1238495989, now seen corresponding path program 1 times [2024-11-17 07:48:24,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:24,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893364577] [2024-11-17 07:48:24,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:24,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:24,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:48:24,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:24,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893364577] [2024-11-17 07:48:24,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893364577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:24,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:48:24,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:48:24,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643268985] [2024-11-17 07:48:24,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:24,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:48:24,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:24,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:48:24,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:48:24,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 101 [2024-11-17 07:48:24,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 86 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:24,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:24,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 101 [2024-11-17 07:48:24,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:25,000 INFO L124 PetriNetUnfolderBase]: 2496/5745 cut-off events. [2024-11-17 07:48:25,001 INFO L125 PetriNetUnfolderBase]: For 940/1101 co-relation queries the response was YES. [2024-11-17 07:48:25,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10235 conditions, 5745 events. 2496/5745 cut-off events. For 940/1101 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 48540 event pairs, 815 based on Foata normal form. 108/5496 useless extension candidates. Maximal degree in co-relation 7948. Up to 3548 conditions per place. [2024-11-17 07:48:25,045 INFO L140 encePairwiseOnDemand]: 95/101 looper letters, 79 selfloop transitions, 6 changer transitions 0/133 dead transitions. [2024-11-17 07:48:25,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 133 transitions, 513 flow [2024-11-17 07:48:25,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:48:25,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:48:25,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 326 transitions. [2024-11-17 07:48:25,047 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6455445544554456 [2024-11-17 07:48:25,047 INFO L175 Difference]: Start difference. First operand has 96 places, 86 transitions, 216 flow. Second operand 5 states and 326 transitions. [2024-11-17 07:48:25,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 133 transitions, 513 flow [2024-11-17 07:48:25,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 133 transitions, 505 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:48:25,055 INFO L231 Difference]: Finished difference. Result has 100 places, 91 transitions, 254 flow [2024-11-17 07:48:25,055 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=254, PETRI_PLACES=100, PETRI_TRANSITIONS=91} [2024-11-17 07:48:25,057 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 12 predicate places. [2024-11-17 07:48:25,057 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 91 transitions, 254 flow [2024-11-17 07:48:25,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:25,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:25,058 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-17 07:48:25,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:48:25,058 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:48:25,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:25,059 INFO L85 PathProgramCache]: Analyzing trace with hash 598383347, now seen corresponding path program 1 times [2024-11-17 07:48:25,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:25,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299393520] [2024-11-17 07:48:25,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:25,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:25,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:48:25,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:25,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299393520] [2024-11-17 07:48:25,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299393520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:25,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:48:25,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:48:25,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455630372] [2024-11-17 07:48:25,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:25,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:48:25,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:25,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:48:25,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:48:25,131 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 101 [2024-11-17 07:48:25,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 91 transitions, 254 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:25,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:25,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 101 [2024-11-17 07:48:25,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:26,057 INFO L124 PetriNetUnfolderBase]: 3134/7319 cut-off events. [2024-11-17 07:48:26,057 INFO L125 PetriNetUnfolderBase]: For 2202/2202 co-relation queries the response was YES. [2024-11-17 07:48:26,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14212 conditions, 7319 events. 3134/7319 cut-off events. For 2202/2202 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 63553 event pairs, 1401 based on Foata normal form. 152/7126 useless extension candidates. Maximal degree in co-relation 13023. Up to 3816 conditions per place. [2024-11-17 07:48:26,124 INFO L140 encePairwiseOnDemand]: 96/101 looper letters, 94 selfloop transitions, 6 changer transitions 0/145 dead transitions. [2024-11-17 07:48:26,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 145 transitions, 606 flow [2024-11-17 07:48:26,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:48:26,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:48:26,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 264 transitions. [2024-11-17 07:48:26,126 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6534653465346535 [2024-11-17 07:48:26,126 INFO L175 Difference]: Start difference. First operand has 100 places, 91 transitions, 254 flow. Second operand 4 states and 264 transitions. [2024-11-17 07:48:26,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 145 transitions, 606 flow [2024-11-17 07:48:26,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 145 transitions, 602 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-17 07:48:26,147 INFO L231 Difference]: Finished difference. Result has 102 places, 91 transitions, 266 flow [2024-11-17 07:48:26,147 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=266, PETRI_PLACES=102, PETRI_TRANSITIONS=91} [2024-11-17 07:48:26,147 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 14 predicate places. [2024-11-17 07:48:26,148 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 91 transitions, 266 flow [2024-11-17 07:48:26,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:26,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:26,148 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1] [2024-11-17 07:48:26,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:48:26,149 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:48:26,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:26,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1970541019, now seen corresponding path program 1 times [2024-11-17 07:48:26,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:26,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754178467] [2024-11-17 07:48:26,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:26,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:48:26,172 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 07:48:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:48:26,219 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 07:48:26,219 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 07:48:26,219 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-17 07:48:26,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-17 07:48:26,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-17 07:48:26,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-17 07:48:26,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-17 07:48:26,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-17 07:48:26,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-17 07:48:26,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-17 07:48:26,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-11-17 07:48:26,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-11-17 07:48:26,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-11-17 07:48:26,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-17 07:48:26,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-17 07:48:26,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-17 07:48:26,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-17 07:48:26,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-17 07:48:26,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-17 07:48:26,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 07:48:26,225 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-17 07:48:26,226 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 07:48:26,226 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-17 07:48:26,252 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-17 07:48:26,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 136 transitions, 299 flow [2024-11-17 07:48:26,295 INFO L124 PetriNetUnfolderBase]: 46/262 cut-off events. [2024-11-17 07:48:26,295 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-17 07:48:26,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 262 events. 46/262 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1042 event pairs, 1 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 176. Up to 16 conditions per place. [2024-11-17 07:48:26,298 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 136 transitions, 299 flow [2024-11-17 07:48:26,300 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 136 transitions, 299 flow [2024-11-17 07:48:26,301 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:48:26,302 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;@d4477f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:48:26,302 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-17 07:48:26,304 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:48:26,304 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2024-11-17 07:48:26,304 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:48:26,304 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:26,304 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:48:26,305 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-17 07:48:26,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:26,305 INFO L85 PathProgramCache]: Analyzing trace with hash -447892867, now seen corresponding path program 1 times [2024-11-17 07:48:26,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:26,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521725485] [2024-11-17 07:48:26,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:26,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:26,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:48:26,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:26,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521725485] [2024-11-17 07:48:26,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521725485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:26,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:48:26,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:48:26,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045102782] [2024-11-17 07:48:26,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:26,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:48:26,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:26,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:48:26,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:48:26,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 136 [2024-11-17 07:48:26,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 136 transitions, 299 flow. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:26,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:26,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 136 [2024-11-17 07:48:26,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:37,067 INFO L124 PetriNetUnfolderBase]: 66574/125391 cut-off events. [2024-11-17 07:48:37,067 INFO L125 PetriNetUnfolderBase]: For 1959/1959 co-relation queries the response was YES. [2024-11-17 07:48:37,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219077 conditions, 125391 events. 66574/125391 cut-off events. For 1959/1959 co-relation queries the response was YES. Maximal size of possible extension queue 3051. Compared 1372281 event pairs, 43096 based on Foata normal form. 44267/159647 useless extension candidates. Maximal degree in co-relation 14603. Up to 92524 conditions per place. [2024-11-17 07:48:38,298 INFO L140 encePairwiseOnDemand]: 108/136 looper letters, 75 selfloop transitions, 3 changer transitions 0/139 dead transitions. [2024-11-17 07:48:38,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 139 transitions, 461 flow [2024-11-17 07:48:38,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:48:38,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:48:38,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2024-11-17 07:48:38,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2024-11-17 07:48:38,301 INFO L175 Difference]: Start difference. First operand has 118 places, 136 transitions, 299 flow. Second operand 4 states and 360 transitions. [2024-11-17 07:48:38,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 139 transitions, 461 flow [2024-11-17 07:48:38,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 139 transitions, 461 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:48:38,308 INFO L231 Difference]: Finished difference. Result has 123 places, 116 transitions, 279 flow [2024-11-17 07:48:38,309 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=279, PETRI_PLACES=123, PETRI_TRANSITIONS=116} [2024-11-17 07:48:38,310 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 5 predicate places. [2024-11-17 07:48:38,310 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 116 transitions, 279 flow [2024-11-17 07:48:38,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:38,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:38,310 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:48:38,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 07:48:38,311 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-17 07:48:38,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:38,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1010846892, now seen corresponding path program 1 times [2024-11-17 07:48:38,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:38,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161449026] [2024-11-17 07:48:38,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:38,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:38,393 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:48:38,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:38,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161449026] [2024-11-17 07:48:38,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161449026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:48:38,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706403564] [2024-11-17 07:48:38,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:38,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:48:38,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:48:38,398 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:48:38,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:48:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:38,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:48:38,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:48:38,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:48:38,529 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:48:38,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706403564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:38,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:48:38,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:48:38,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643648458] [2024-11-17 07:48:38,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:38,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:48:38,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:38,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:48:38,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:48:38,545 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 136 [2024-11-17 07:48:38,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 116 transitions, 279 flow. Second operand has 6 states, 6 states have (on average 62.5) internal successors, (375), 6 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:38,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:38,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 136 [2024-11-17 07:48:38,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:47,178 INFO L124 PetriNetUnfolderBase]: 61255/110212 cut-off events. [2024-11-17 07:48:47,178 INFO L125 PetriNetUnfolderBase]: For 7225/7225 co-relation queries the response was YES. [2024-11-17 07:48:47,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204151 conditions, 110212 events. 61255/110212 cut-off events. For 7225/7225 co-relation queries the response was YES. Maximal size of possible extension queue 2535. Compared 1141010 event pairs, 11496 based on Foata normal form. 1872/107207 useless extension candidates. Maximal degree in co-relation 17929. Up to 45544 conditions per place. [2024-11-17 07:48:48,195 INFO L140 encePairwiseOnDemand]: 131/136 looper letters, 137 selfloop transitions, 6 changer transitions 0/204 dead transitions. [2024-11-17 07:48:48,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 204 transitions, 739 flow [2024-11-17 07:48:48,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:48:48,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:48:48,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 510 transitions. [2024-11-17 07:48:48,197 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-17 07:48:48,198 INFO L175 Difference]: Start difference. First operand has 123 places, 116 transitions, 279 flow. Second operand 6 states and 510 transitions. [2024-11-17 07:48:48,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 204 transitions, 739 flow [2024-11-17 07:48:48,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 204 transitions, 737 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:48:48,207 INFO L231 Difference]: Finished difference. Result has 126 places, 115 transitions, 285 flow [2024-11-17 07:48:48,207 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=285, PETRI_PLACES=126, PETRI_TRANSITIONS=115} [2024-11-17 07:48:48,208 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 8 predicate places. [2024-11-17 07:48:48,208 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 115 transitions, 285 flow [2024-11-17 07:48:48,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.5) internal successors, (375), 6 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:48,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:48,209 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:48:48,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 07:48:48,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-17 07:48:48,410 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-17 07:48:48,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:48,410 INFO L85 PathProgramCache]: Analyzing trace with hash 996845846, now seen corresponding path program 1 times [2024-11-17 07:48:48,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:48,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298178367] [2024-11-17 07:48:48,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:48,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:48,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:48:48,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:48,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298178367] [2024-11-17 07:48:48,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298178367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:48,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:48:48,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:48:48,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070457272] [2024-11-17 07:48:48,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:48,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:48:48,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:48,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:48:48,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:48:48,505 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 136 [2024-11-17 07:48:48,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 115 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:48,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:48,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 136 [2024-11-17 07:48:48,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:55,723 INFO L124 PetriNetUnfolderBase]: 50762/93583 cut-off events. [2024-11-17 07:48:55,723 INFO L125 PetriNetUnfolderBase]: For 11096/13344 co-relation queries the response was YES. [2024-11-17 07:48:56,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170493 conditions, 93583 events. 50762/93583 cut-off events. For 11096/13344 co-relation queries the response was YES. Maximal size of possible extension queue 2660. Compared 979097 event pairs, 21153 based on Foata normal form. 1340/89967 useless extension candidates. Maximal degree in co-relation 112849. Up to 65859 conditions per place. [2024-11-17 07:48:56,656 INFO L140 encePairwiseOnDemand]: 129/136 looper letters, 117 selfloop transitions, 8 changer transitions 0/189 dead transitions. [2024-11-17 07:48:56,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 189 transitions, 740 flow [2024-11-17 07:48:56,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:48:56,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:48:56,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 446 transitions. [2024-11-17 07:48:56,658 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6558823529411765 [2024-11-17 07:48:56,658 INFO L175 Difference]: Start difference. First operand has 126 places, 115 transitions, 285 flow. Second operand 5 states and 446 transitions. [2024-11-17 07:48:56,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 189 transitions, 740 flow [2024-11-17 07:48:56,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 189 transitions, 732 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:48:56,666 INFO L231 Difference]: Finished difference. Result has 130 places, 122 transitions, 340 flow [2024-11-17 07:48:56,666 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=340, PETRI_PLACES=130, PETRI_TRANSITIONS=122} [2024-11-17 07:48:56,667 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 12 predicate places. [2024-11-17 07:48:56,668 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 122 transitions, 340 flow [2024-11-17 07:48:56,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:56,668 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:56,668 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-17 07:48:56,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 07:48:56,669 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-17 07:48:56,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:56,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1271483065, now seen corresponding path program 1 times [2024-11-17 07:48:56,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:56,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577359470] [2024-11-17 07:48:56,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:56,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:48:56,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:56,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577359470] [2024-11-17 07:48:56,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577359470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:56,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:48:56,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:48:56,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796338719] [2024-11-17 07:48:56,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:56,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:48:56,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:56,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:48:56,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:48:56,718 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 136 [2024-11-17 07:48:56,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 122 transitions, 340 flow. Second operand has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:56,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:56,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 136 [2024-11-17 07:48:56,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:49:06,601 INFO L124 PetriNetUnfolderBase]: 63314/118567 cut-off events. [2024-11-17 07:49:06,602 INFO L125 PetriNetUnfolderBase]: For 37830/37830 co-relation queries the response was YES. [2024-11-17 07:49:07,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235533 conditions, 118567 events. 63314/118567 cut-off events. For 37830/37830 co-relation queries the response was YES. Maximal size of possible extension queue 3023. Compared 1280886 event pairs, 22205 based on Foata normal form. 2136/115898 useless extension candidates. Maximal degree in co-relation 205412. Up to 67274 conditions per place. [2024-11-17 07:49:07,446 INFO L140 encePairwiseOnDemand]: 131/136 looper letters, 135 selfloop transitions, 6 changer transitions 0/202 dead transitions. [2024-11-17 07:49:07,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 202 transitions, 852 flow [2024-11-17 07:49:07,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:49:07,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:49:07,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 363 transitions. [2024-11-17 07:49:07,448 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6672794117647058 [2024-11-17 07:49:07,448 INFO L175 Difference]: Start difference. First operand has 130 places, 122 transitions, 340 flow. Second operand 4 states and 363 transitions. [2024-11-17 07:49:07,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 202 transitions, 852 flow [2024-11-17 07:49:08,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 202 transitions, 848 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-17 07:49:08,003 INFO L231 Difference]: Finished difference. Result has 132 places, 122 transitions, 352 flow [2024-11-17 07:49:08,003 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=352, PETRI_PLACES=132, PETRI_TRANSITIONS=122} [2024-11-17 07:49:08,004 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 14 predicate places. [2024-11-17 07:49:08,004 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 122 transitions, 352 flow [2024-11-17 07:49:08,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:49:08,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:49:08,004 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:49:08,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 07:49:08,005 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-17 07:49:08,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:49:08,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1794958085, now seen corresponding path program 1 times [2024-11-17 07:49:08,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:49:08,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946624766] [2024-11-17 07:49:08,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:49:08,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:49:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:49:08,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:49:08,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:49:08,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946624766] [2024-11-17 07:49:08,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946624766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:49:08,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:49:08,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:49:08,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040272238] [2024-11-17 07:49:08,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:49:08,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:49:08,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:49:08,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:49:08,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:49:08,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 136 [2024-11-17 07:49:08,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 122 transitions, 352 flow. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:49:08,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:49:08,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 136 [2024-11-17 07:49:08,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand