./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-lit/sssc12_variant.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-lit/sssc12_variant.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0ff08c0361e0fdb1af5d85b333c023f31932563eeba591605f3b3b9ddd16afc8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:02:07,565 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:02:07,609 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:02:07,613 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:02:07,613 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:02:07,638 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:02:07,638 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:02:07,639 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:02:07,639 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:02:07,639 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:02:07,639 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:02:07,639 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:02:07,640 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:02:07,640 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:02:07,640 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:02:07,640 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:02:07,640 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:02:07,640 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:02:07,640 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:02:07,641 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:02:07,641 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:02:07,641 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:02:07,641 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:02:07,641 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:02:07,641 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:02:07,641 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:02:07,641 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:02:07,641 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:02:07,642 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:02:07,642 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:02:07,642 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:02:07,642 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:02:07,642 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:02:07,642 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:02:07,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:02:07,642 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:02:07,643 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:02:07,643 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:02:07,643 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:02:07,643 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:02:07,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:02:07,643 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:02:07,643 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:02:07,643 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:02:07,643 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:02:07,643 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ff08c0361e0fdb1af5d85b333c023f31932563eeba591605f3b3b9ddd16afc8 [2025-02-08 14:02:07,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:02:07,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:02:07,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:02:07,912 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:02:07,913 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:02:07,915 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-lit/sssc12_variant.i [2025-02-08 14:02:09,170 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bca31194a/9fdf62e28fe0488e970caa6899b75070/FLAGe0fbfcb15 [2025-02-08 14:02:09,527 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:02:09,528 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-lit/sssc12_variant.i [2025-02-08 14:02:09,547 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bca31194a/9fdf62e28fe0488e970caa6899b75070/FLAGe0fbfcb15 [2025-02-08 14:02:09,569 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bca31194a/9fdf62e28fe0488e970caa6899b75070 [2025-02-08 14:02:09,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:02:09,573 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:02:09,575 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:02:09,576 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:02:09,580 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:02:09,581 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:02:09" (1/1) ... [2025-02-08 14:02:09,582 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@419f4996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:02:09, skipping insertion in model container [2025-02-08 14:02:09,582 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:02:09" (1/1) ... [2025-02-08 14:02:09,630 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:02:09,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:02:09,992 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:02:10,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:02:10,080 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:02:10,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:02:10 WrapperNode [2025-02-08 14:02:10,081 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:02:10,082 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:02:10,082 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:02:10,082 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:02:10,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:02:10" (1/1) ... [2025-02-08 14:02:10,100 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:02:10" (1/1) ... [2025-02-08 14:02:10,119 INFO L138 Inliner]: procedures = 272, calls = 22, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 79 [2025-02-08 14:02:10,119 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:02:10,120 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:02:10,120 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:02:10,120 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:02:10,128 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:02:10" (1/1) ... [2025-02-08 14:02:10,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:02:10" (1/1) ... [2025-02-08 14:02:10,131 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:02:10" (1/1) ... [2025-02-08 14:02:10,142 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 5, 3]. 50 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 2 writes are split as follows [0, 0, 2]. [2025-02-08 14:02:10,142 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:02:10" (1/1) ... [2025-02-08 14:02:10,142 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:02:10" (1/1) ... [2025-02-08 14:02:10,148 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:02:10" (1/1) ... [2025-02-08 14:02:10,148 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:02:10" (1/1) ... [2025-02-08 14:02:10,149 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:02:10" (1/1) ... [2025-02-08 14:02:10,150 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:02:10" (1/1) ... [2025-02-08 14:02:10,151 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:02:10,152 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:02:10,152 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:02:10,152 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:02:10,153 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:02:10" (1/1) ... [2025-02-08 14:02:10,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:02:10,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:02:10,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 14:02:10,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 14:02:10,205 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2025-02-08 14:02:10,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2025-02-08 14:02:10,205 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-08 14:02:10,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:02:10,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:02:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 14:02:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:02:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:02:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 14:02:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-08 14:02:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:02:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:02:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:02:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:02:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 14:02:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:02:10,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:02:10,207 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:02:10,333 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:02:10,335 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:02:10,521 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1049: assume { :end_inline___VERIFIER_assert } true;havoc #t~mem6#1; [2025-02-08 14:02:10,522 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1049-1: havoc __VERIFIER_assert_#in~cond#1; [2025-02-08 14:02:10,522 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1049-2: havoc __VERIFIER_assert_~cond#1; [2025-02-08 14:02:10,522 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1050: assume 1 + ~c~0#1 <= 2147483647; [2025-02-08 14:02:10,522 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1050: assume !(1 + ~c~0#1 <= 2147483647); [2025-02-08 14:02:10,522 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1050-1: ~c~0#1 := 1 + ~c~0#1; [2025-02-08 14:02:10,522 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1050-2: assume 1 + ~c~0#1 >= -2147483648; [2025-02-08 14:02:10,522 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1050-2: assume !(1 + ~c~0#1 >= -2147483648); [2025-02-08 14:02:10,523 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:02:10,523 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:02:10,638 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:02:10,638 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:02:10,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:02:10 BoogieIcfgContainer [2025-02-08 14:02:10,638 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:02:10,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:02:10,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:02:10,648 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:02:10,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:02:09" (1/3) ... [2025-02-08 14:02:10,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583411d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:02:10, skipping insertion in model container [2025-02-08 14:02:10,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:02:10" (2/3) ... [2025-02-08 14:02:10,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583411d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:02:10, skipping insertion in model container [2025-02-08 14:02:10,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:02:10" (3/3) ... [2025-02-08 14:02:10,652 INFO L128 eAbstractionObserver]: Analyzing ICFG sssc12_variant.i [2025-02-08 14:02:10,665 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:02:10,666 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sssc12_variant.i that has 2 procedures, 22 locations, 1 initial locations, 2 loop locations, and 6 error locations. [2025-02-08 14:02:10,667 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:02:10,707 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 14:02:10,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 23 transitions, 50 flow [2025-02-08 14:02:10,757 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2025-02-08 14:02:10,759 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:02:10,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 25 events. 1/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2025-02-08 14:02:10,761 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 23 transitions, 50 flow [2025-02-08 14:02:10,763 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 23 transitions, 50 flow [2025-02-08 14:02:10,772 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:02:10,786 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ce3c602, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:02:10,786 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-02-08 14:02:10,793 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:02:10,794 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-02-08 14:02:10,794 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:02:10,794 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:02:10,794 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 14:02:10,795 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:02:10,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:02:10,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1786478469, now seen corresponding path program 1 times [2025-02-08 14:02:10,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:02:10,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870062826] [2025-02-08 14:02:10,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:02:10,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:02:10,878 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:02:10,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:02:10,908 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:02:10,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:02:10,908 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:02:10,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:02:10,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:02:10,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:02:10,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:02:10,962 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:02:10,965 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 14:02:10,966 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2025-02-08 14:02:10,968 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2025-02-08 14:02:10,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2025-02-08 14:02:10,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2025-02-08 14:02:10,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2025-02-08 14:02:10,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2025-02-08 14:02:10,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2025-02-08 14:02:10,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2025-02-08 14:02:10,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2025-02-08 14:02:10,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:02:10,970 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-02-08 14:02:10,974 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 14:02:10,975 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-08 14:02:11,002 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 14:02:11,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 41 transitions, 92 flow [2025-02-08 14:02:11,025 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2025-02-08 14:02:11,025 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 14:02:11,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 46 events. 2/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 113 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 37. Up to 3 conditions per place. [2025-02-08 14:02:11,027 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 41 transitions, 92 flow [2025-02-08 14:02:11,028 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 41 transitions, 92 flow [2025-02-08 14:02:11,030 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:02:11,031 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;@7ce3c602, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:02:11,032 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-02-08 14:02:11,038 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:02:11,039 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-02-08 14:02:11,039 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 14:02:11,039 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:02:11,039 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:02:11,040 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-08 14:02:11,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:02:11,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1491201728, now seen corresponding path program 1 times [2025-02-08 14:02:11,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:02:11,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185049185] [2025-02-08 14:02:11,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:02:11,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:02:11,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:02:11,109 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:02:11,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:02:11,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:02:11,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:02:11,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:02:11,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185049185] [2025-02-08 14:02:11,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185049185] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:02:11,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:02:11,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:02:11,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050299964] [2025-02-08 14:02:11,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:02:11,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:02:11,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:02:11,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:02:11,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:02:11,339 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2025-02-08 14:02:11,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:02:11,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:02:11,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2025-02-08 14:02:11,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:02:11,659 INFO L124 PetriNetUnfolderBase]: 628/1240 cut-off events. [2025-02-08 14:02:11,659 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2025-02-08 14:02:11,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2329 conditions, 1240 events. 628/1240 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 7599 event pairs, 294 based on Foata normal form. 131/1208 useless extension candidates. Maximal degree in co-relation 869. Up to 659 conditions per place. [2025-02-08 14:02:11,673 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 41 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2025-02-08 14:02:11,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 57 transitions, 217 flow [2025-02-08 14:02:11,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:02:11,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:02:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2025-02-08 14:02:11,687 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7560975609756098 [2025-02-08 14:02:11,688 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 92 flow. Second operand 3 states and 93 transitions. [2025-02-08 14:02:11,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 57 transitions, 217 flow [2025-02-08 14:02:11,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 217 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:02:11,701 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 123 flow [2025-02-08 14:02:11,704 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2025-02-08 14:02:11,706 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2025-02-08 14:02:11,707 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 123 flow [2025-02-08 14:02:11,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:02:11,707 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:02:11,707 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-02-08 14:02:11,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 14:02:11,707 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-08 14:02:11,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:02:11,708 INFO L85 PathProgramCache]: Analyzing trace with hash 539168827, now seen corresponding path program 1 times [2025-02-08 14:02:11,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:02:11,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149985183] [2025-02-08 14:02:11,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:02:11,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:02:11,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:02:11,740 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:02:11,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:02:11,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:02:11,740 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:02:11,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:02:11,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:02:11,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:02:11,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:02:11,765 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:02:11,766 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 14:02:11,766 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2025-02-08 14:02:11,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2025-02-08 14:02:11,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2025-02-08 14:02:11,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2025-02-08 14:02:11,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2025-02-08 14:02:11,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2025-02-08 14:02:11,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2025-02-08 14:02:11,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2025-02-08 14:02:11,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2025-02-08 14:02:11,767 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2025-02-08 14:02:11,767 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2025-02-08 14:02:11,767 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2025-02-08 14:02:11,767 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2025-02-08 14:02:11,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 14:02:11,767 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-08 14:02:11,767 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 14:02:11,767 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-02-08 14:02:11,796 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 14:02:11,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 59 transitions, 136 flow [2025-02-08 14:02:11,804 INFO L124 PetriNetUnfolderBase]: 3/67 cut-off events. [2025-02-08 14:02:11,804 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-08 14:02:11,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 67 events. 3/67 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 195 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 54. Up to 4 conditions per place. [2025-02-08 14:02:11,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 59 transitions, 136 flow [2025-02-08 14:02:11,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 59 transitions, 136 flow [2025-02-08 14:02:11,807 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:02:11,807 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;@7ce3c602, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:02:11,807 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-02-08 14:02:11,810 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:02:11,810 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2025-02-08 14:02:11,810 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 14:02:11,810 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:02:11,810 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:02:11,810 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-08 14:02:11,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:02:11,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1092508332, now seen corresponding path program 1 times [2025-02-08 14:02:11,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:02:11,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231887332] [2025-02-08 14:02:11,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:02:11,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:02:11,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:02:11,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:02:11,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:02:11,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:02:11,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:02:11,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:02:11,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231887332] [2025-02-08 14:02:11,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231887332] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:02:11,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:02:11,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:02:11,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830518916] [2025-02-08 14:02:11,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:02:11,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:02:11,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:02:11,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:02:11,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:02:11,958 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2025-02-08 14:02:11,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:02:11,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:02:11,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2025-02-08 14:02:11,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:02:13,567 INFO L124 PetriNetUnfolderBase]: 12653/19274 cut-off events. [2025-02-08 14:02:13,568 INFO L125 PetriNetUnfolderBase]: For 929/929 co-relation queries the response was YES. [2025-02-08 14:02:13,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37582 conditions, 19274 events. 12653/19274 cut-off events. For 929/929 co-relation queries the response was YES. Maximal size of possible extension queue 1223. Compared 143716 event pairs, 4881 based on Foata normal form. 1426/17884 useless extension candidates. Maximal degree in co-relation 5781. Up to 13980 conditions per place. [2025-02-08 14:02:13,682 INFO L140 encePairwiseOnDemand]: 42/59 looper letters, 60 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2025-02-08 14:02:13,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 83 transitions, 324 flow [2025-02-08 14:02:13,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:02:13,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:02:13,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2025-02-08 14:02:13,685 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7627118644067796 [2025-02-08 14:02:13,685 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 136 flow. Second operand 3 states and 135 transitions. [2025-02-08 14:02:13,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 83 transitions, 324 flow [2025-02-08 14:02:13,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 83 transitions, 320 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-02-08 14:02:13,690 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 180 flow [2025-02-08 14:02:13,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2025-02-08 14:02:13,692 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 2 predicate places. [2025-02-08 14:02:13,692 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 180 flow [2025-02-08 14:02:13,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:02:13,692 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:02:13,692 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2025-02-08 14:02:13,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:02:13,693 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-08 14:02:13,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:02:13,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1511281948, now seen corresponding path program 1 times [2025-02-08 14:02:13,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:02:13,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612092989] [2025-02-08 14:02:13,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:02:13,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:02:13,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:02:13,718 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:02:13,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:02:13,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:02:13,719 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:02:13,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:02:13,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:02:13,734 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:02:13,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:02:13,738 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:02:13,738 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 14:02:13,738 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2025-02-08 14:02:13,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2025-02-08 14:02:13,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2025-02-08 14:02:13,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2025-02-08 14:02:13,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2025-02-08 14:02:13,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2025-02-08 14:02:13,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2025-02-08 14:02:13,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2025-02-08 14:02:13,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2025-02-08 14:02:13,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2025-02-08 14:02:13,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2025-02-08 14:02:13,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2025-02-08 14:02:13,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2025-02-08 14:02:13,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2025-02-08 14:02:13,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2025-02-08 14:02:13,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2025-02-08 14:02:13,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2025-02-08 14:02:13,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:02:13,739 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-08 14:02:13,743 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 14:02:13,743 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-02-08 14:02:13,767 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 14:02:13,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 77 transitions, 182 flow [2025-02-08 14:02:13,777 INFO L124 PetriNetUnfolderBase]: 4/88 cut-off events. [2025-02-08 14:02:13,777 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-02-08 14:02:13,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 88 events. 4/88 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 283 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 79. Up to 5 conditions per place. [2025-02-08 14:02:13,779 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 77 transitions, 182 flow [2025-02-08 14:02:13,780 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 77 transitions, 182 flow [2025-02-08 14:02:13,781 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:02:13,782 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;@7ce3c602, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:02:13,782 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-02-08 14:02:13,784 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:02:13,785 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2025-02-08 14:02:13,785 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 14:02:13,785 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:02:13,785 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:02:13,786 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-08 14:02:13,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:02:13,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1290526294, now seen corresponding path program 1 times [2025-02-08 14:02:13,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:02:13,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131406042] [2025-02-08 14:02:13,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:02:13,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:02:13,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:02:13,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:02:13,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:02:13,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:02:13,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:02:13,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:02:13,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131406042] [2025-02-08 14:02:13,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131406042] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:02:13,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:02:13,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:02:13,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356553054] [2025-02-08 14:02:13,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:02:13,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:02:13,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:02:13,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:02:13,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:02:13,907 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 77 [2025-02-08 14:02:13,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:02:13,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:02:13,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 77 [2025-02-08 14:02:13,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:02:30,169 INFO L124 PetriNetUnfolderBase]: 217519/291793 cut-off events. [2025-02-08 14:02:30,169 INFO L125 PetriNetUnfolderBase]: For 18236/18236 co-relation queries the response was YES. [2025-02-08 14:02:30,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579886 conditions, 291793 events. 217519/291793 cut-off events. For 18236/18236 co-relation queries the response was YES. Maximal size of possible extension queue 14709. Compared 2298060 event pairs, 74169 based on Foata normal form. 13578/261111 useless extension candidates. Maximal degree in co-relation 37754. Up to 246128 conditions per place. [2025-02-08 14:02:32,422 INFO L140 encePairwiseOnDemand]: 55/77 looper letters, 79 selfloop transitions, 5 changer transitions 0/109 dead transitions. [2025-02-08 14:02:32,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 109 transitions, 435 flow [2025-02-08 14:02:32,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:02:32,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:02:32,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2025-02-08 14:02:32,424 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7662337662337663 [2025-02-08 14:02:32,424 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 182 flow. Second operand 3 states and 177 transitions. [2025-02-08 14:02:32,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 109 transitions, 435 flow [2025-02-08 14:02:32,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 109 transitions, 423 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-02-08 14:02:32,440 INFO L231 Difference]: Finished difference. Result has 84 places, 80 transitions, 237 flow [2025-02-08 14:02:32,440 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=84, PETRI_TRANSITIONS=80} [2025-02-08 14:02:32,441 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 2 predicate places. [2025-02-08 14:02:32,441 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 80 transitions, 237 flow [2025-02-08 14:02:32,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:02:32,442 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:02:32,442 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2025-02-08 14:02:32,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:02:32,442 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-08 14:02:32,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:02:32,442 INFO L85 PathProgramCache]: Analyzing trace with hash 2123536420, now seen corresponding path program 1 times [2025-02-08 14:02:32,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:02:32,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330004916] [2025-02-08 14:02:32,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:02:32,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:02:32,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 14:02:32,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 14:02:32,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:02:32,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:02:32,465 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:02:32,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 14:02:32,476 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 14:02:32,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:02:32,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:02:32,483 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:02:32,484 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 14:02:32,484 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2025-02-08 14:02:32,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2025-02-08 14:02:32,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2025-02-08 14:02:32,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2025-02-08 14:02:32,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2025-02-08 14:02:32,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2025-02-08 14:02:32,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2025-02-08 14:02:32,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2025-02-08 14:02:32,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2025-02-08 14:02:32,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2025-02-08 14:02:32,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2025-02-08 14:02:32,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2025-02-08 14:02:32,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2025-02-08 14:02:32,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2025-02-08 14:02:32,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2025-02-08 14:02:32,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2025-02-08 14:02:32,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2025-02-08 14:02:32,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2025-02-08 14:02:32,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2025-02-08 14:02:32,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2025-02-08 14:02:32,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2025-02-08 14:02:32,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 14:02:32,487 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-08 14:02:32,488 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 14:02:32,488 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2025-02-08 14:02:32,521 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 14:02:32,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 95 transitions, 230 flow [2025-02-08 14:02:32,531 INFO L124 PetriNetUnfolderBase]: 5/109 cut-off events. [2025-02-08 14:02:32,532 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-02-08 14:02:32,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 109 events. 5/109 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 378 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 106. Up to 6 conditions per place. [2025-02-08 14:02:32,535 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 95 transitions, 230 flow [2025-02-08 14:02:32,536 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 95 transitions, 230 flow [2025-02-08 14:02:32,537 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:02:32,538 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;@7ce3c602, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:02:32,539 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2025-02-08 14:02:32,540 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:02:32,540 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-02-08 14:02:32,540 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 14:02:32,540 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:02:32,540 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:02:32,540 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:02:32,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:02:32,540 INFO L85 PathProgramCache]: Analyzing trace with hash -49847686, now seen corresponding path program 1 times [2025-02-08 14:02:32,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:02:32,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549116485] [2025-02-08 14:02:32,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:02:32,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:02:32,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:02:32,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:02:32,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:02:32,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:02:32,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:02:32,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:02:32,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549116485] [2025-02-08 14:02:32,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549116485] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:02:32,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:02:32,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:02:32,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917578336] [2025-02-08 14:02:32,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:02:32,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:02:32,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:02:32,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:02:32,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:02:32,628 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 95 [2025-02-08 14:02:32,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 95 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:02:32,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:02:32,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 95 [2025-02-08 14:02:32,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand