./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc62a2ef-2dc2-40b0-a952-fa885d825f51/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc62a2ef-2dc2-40b0-a952-fa885d825f51/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc62a2ef-2dc2-40b0-a952-fa885d825f51/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc62a2ef-2dc2-40b0-a952-fa885d825f51/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc62a2ef-2dc2-40b0-a952-fa885d825f51/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc62a2ef-2dc2-40b0-a952-fa885d825f51/bin/uautomizer-verify-aQ6SnzHsRB --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 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:40:19,083 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:40:19,177 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc62a2ef-2dc2-40b0-a952-fa885d825f51/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 02:40:19,189 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:40:19,192 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:40:19,235 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:40:19,235 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:40:19,236 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:40:19,236 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:40:19,236 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:40:19,236 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:40:19,236 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:40:19,237 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:40:19,237 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:40:19,237 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:40:19,237 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:40:19,237 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:40:19,238 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:40:19,238 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:40:19,238 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:40:19,238 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:40:19,238 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:40:19,238 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:40:19,238 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:40:19,238 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 02:40:19,238 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:40:19,239 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:40:19,239 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:40:19,239 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:40:19,239 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:40:19,239 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:40:19,239 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:40:19,239 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:40:19,239 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:40:19,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:40:19,239 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:40:19,240 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:40:19,240 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:40:19,240 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:40:19,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:40:19,240 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:40:19,240 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:40:19,240 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:40:19,240 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:40:19,241 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:40:19,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:40:19,241 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:40:19,241 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:40:19,241 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:40:19,241 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:40:19,242 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc62a2ef-2dc2-40b0-a952-fa885d825f51/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 [2024-11-28 02:40:19,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:40:19,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:40:19,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:40:19,630 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:40:19,630 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:40:19,631 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc62a2ef-2dc2-40b0-a952-fa885d825f51/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-11-28 02:40:22,738 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc62a2ef-2dc2-40b0-a952-fa885d825f51/bin/uautomizer-verify-aQ6SnzHsRB/data/434a13fb6/8eae8539921b41f082130e1988a58c22/FLAG23c307849 [2024-11-28 02:40:23,026 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:40:23,028 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc62a2ef-2dc2-40b0-a952-fa885d825f51/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-11-28 02:40:23,040 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc62a2ef-2dc2-40b0-a952-fa885d825f51/bin/uautomizer-verify-aQ6SnzHsRB/data/434a13fb6/8eae8539921b41f082130e1988a58c22/FLAG23c307849 [2024-11-28 02:40:23,323 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc62a2ef-2dc2-40b0-a952-fa885d825f51/bin/uautomizer-verify-aQ6SnzHsRB/data/434a13fb6/8eae8539921b41f082130e1988a58c22 [2024-11-28 02:40:23,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:40:23,326 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:40:23,328 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:40:23,328 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:40:23,333 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:40:23,334 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:40:23" (1/1) ... [2024-11-28 02:40:23,335 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@692d0520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:23, skipping insertion in model container [2024-11-28 02:40:23,335 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:40:23" (1/1) ... [2024-11-28 02:40:23,353 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:40:23,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:40:23,544 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:40:23,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:40:23,585 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:40:23,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:23 WrapperNode [2024-11-28 02:40:23,585 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:40:23,586 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:40:23,586 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:40:23,587 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:40:23,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:23" (1/1) ... [2024-11-28 02:40:23,610 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:23" (1/1) ... [2024-11-28 02:40:23,628 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 102 [2024-11-28 02:40:23,629 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:40:23,629 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:40:23,629 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:40:23,629 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:40:23,639 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:23" (1/1) ... [2024-11-28 02:40:23,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:23" (1/1) ... [2024-11-28 02:40:23,641 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:23" (1/1) ... [2024-11-28 02:40:23,655 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:40:23,655 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:23" (1/1) ... [2024-11-28 02:40:23,655 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:23" (1/1) ... [2024-11-28 02:40:23,660 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:23" (1/1) ... [2024-11-28 02:40:23,666 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:23" (1/1) ... [2024-11-28 02:40:23,674 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:23" (1/1) ... [2024-11-28 02:40:23,675 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:23" (1/1) ... [2024-11-28 02:40:23,676 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:23" (1/1) ... [2024-11-28 02:40:23,680 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:40:23,681 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:40:23,682 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:40:23,682 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:40:23,684 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:23" (1/1) ... [2024-11-28 02:40:23,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:40:23,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc62a2ef-2dc2-40b0-a952-fa885d825f51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:23,723 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc62a2ef-2dc2-40b0-a952-fa885d825f51/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:40:23,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc62a2ef-2dc2-40b0-a952-fa885d825f51/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:40:23,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:40:23,758 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 02:40:23,758 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 02:40:23,758 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 02:40:23,759 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 02:40:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 02:40:23,759 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 02:40:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-28 02:40:23,759 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-28 02:40:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:40:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:40:23,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:40:23,761 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:40:23,884 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:40:23,887 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:40:24,305 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:40:24,305 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:40:24,540 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:40:24,540 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 02:40:24,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:40:24 BoogieIcfgContainer [2024-11-28 02:40:24,541 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:40:24,547 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:40:24,547 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:40:24,553 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:40:24,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:40:23" (1/3) ... [2024-11-28 02:40:24,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@193bdf81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:40:24, skipping insertion in model container [2024-11-28 02:40:24,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:23" (2/3) ... [2024-11-28 02:40:24,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@193bdf81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:40:24, skipping insertion in model container [2024-11-28 02:40:24,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:40:24" (3/3) ... [2024-11-28 02:40:24,556 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2024-11-28 02:40:24,575 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:40:24,577 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-counter-determinism.wvr.c that has 5 procedures, 59 locations, 1 initial locations, 4 loop locations, and 16 error locations. [2024-11-28 02:40:24,577 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:40:24,695 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-28 02:40:24,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 62 transitions, 152 flow [2024-11-28 02:40:24,833 INFO L124 PetriNetUnfolderBase]: 4/58 cut-off events. [2024-11-28 02:40:24,837 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 02:40:24,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 58 events. 4/58 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 160 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-11-28 02:40:24,849 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 62 transitions, 152 flow [2024-11-28 02:40:24,855 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 133 flow [2024-11-28 02:40:24,868 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:40:24,891 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;@52d5df6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:40:24,891 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-11-28 02:40:24,901 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:40:24,901 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-28 02:40:24,901 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:40:24,901 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:40:24,902 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:40:24,902 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:40:24,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:24,911 INFO L85 PathProgramCache]: Analyzing trace with hash 376505630, now seen corresponding path program 1 times [2024-11-28 02:40:24,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:24,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646066002] [2024-11-28 02:40:24,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:24,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:25,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:25,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:25,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646066002] [2024-11-28 02:40:25,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646066002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:25,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:25,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:40:25,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728776257] [2024-11-28 02:40:25,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:25,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:40:25,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:25,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:40:25,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:40:25,202 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-28 02:40:25,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-11-28 02:40:25,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:40:25,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-28 02:40:25,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:40:29,497 INFO L124 PetriNetUnfolderBase]: 28409/42107 cut-off events. [2024-11-28 02:40:29,498 INFO L125 PetriNetUnfolderBase]: For 2006/2006 co-relation queries the response was YES. [2024-11-28 02:40:29,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80741 conditions, 42107 events. 28409/42107 cut-off events. For 2006/2006 co-relation queries the response was YES. Maximal size of possible extension queue 2241. Compared 313201 event pairs, 13092 based on Foata normal form. 0/30523 useless extension candidates. Maximal degree in co-relation 75056. Up to 20574 conditions per place. [2024-11-28 02:40:29,830 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 70 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2024-11-28 02:40:29,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 88 transitions, 360 flow [2024-11-28 02:40:29,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:40:29,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:40:29,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-11-28 02:40:29,852 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6989247311827957 [2024-11-28 02:40:29,853 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 133 flow. Second operand 3 states and 130 transitions. [2024-11-28 02:40:29,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 88 transitions, 360 flow [2024-11-28 02:40:29,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 88 transitions, 338 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-28 02:40:30,001 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 144 flow [2024-11-28 02:40:30,004 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-11-28 02:40:30,010 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, -4 predicate places. [2024-11-28 02:40:30,010 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 144 flow [2024-11-28 02:40:30,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-11-28 02:40:30,012 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:40:30,012 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:40:30,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:40:30,012 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:40:30,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:30,013 INFO L85 PathProgramCache]: Analyzing trace with hash 376505631, now seen corresponding path program 1 times [2024-11-28 02:40:30,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:30,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827838974] [2024-11-28 02:40:30,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:30,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:30,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:30,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:30,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827838974] [2024-11-28 02:40:30,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827838974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:30,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:30,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:40:30,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146873394] [2024-11-28 02:40:30,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:30,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:40:30,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:30,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:40:30,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:40:30,092 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-28 02:40:30,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-11-28 02:40:30,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:40:30,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-28 02:40:30,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:40:33,492 INFO L124 PetriNetUnfolderBase]: 27849/40901 cut-off events. [2024-11-28 02:40:33,492 INFO L125 PetriNetUnfolderBase]: For 5597/5597 co-relation queries the response was YES. [2024-11-28 02:40:33,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83884 conditions, 40901 events. 27849/40901 cut-off events. For 5597/5597 co-relation queries the response was YES. Maximal size of possible extension queue 1678. Compared 293230 event pairs, 7534 based on Foata normal form. 953/35159 useless extension candidates. Maximal degree in co-relation 44734. Up to 29137 conditions per place. [2024-11-28 02:40:33,760 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 71 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2024-11-28 02:40:33,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 88 transitions, 361 flow [2024-11-28 02:40:33,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:40:33,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:40:33,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2024-11-28 02:40:33,764 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6881720430107527 [2024-11-28 02:40:33,764 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 144 flow. Second operand 3 states and 128 transitions. [2024-11-28 02:40:33,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 88 transitions, 361 flow [2024-11-28 02:40:33,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 88 transitions, 353 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:40:33,864 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 155 flow [2024-11-28 02:40:33,865 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-11-28 02:40:33,866 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, -3 predicate places. [2024-11-28 02:40:33,866 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 155 flow [2024-11-28 02:40:33,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-11-28 02:40:33,867 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:40:33,867 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:33,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:40:33,867 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:40:33,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:33,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1044672385, now seen corresponding path program 1 times [2024-11-28 02:40:33,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:33,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403304986] [2024-11-28 02:40:33,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:33,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:34,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:34,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:34,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403304986] [2024-11-28 02:40:34,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403304986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:34,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:34,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:40:34,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353074946] [2024-11-28 02:40:34,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:34,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:40:34,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:34,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:40:34,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:40:34,026 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-28 02:40:34,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-28 02:40:34,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:40:34,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-28 02:40:34,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:40:37,503 INFO L124 PetriNetUnfolderBase]: 43625/64396 cut-off events. [2024-11-28 02:40:37,503 INFO L125 PetriNetUnfolderBase]: For 15141/15141 co-relation queries the response was YES. [2024-11-28 02:40:37,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133444 conditions, 64396 events. 43625/64396 cut-off events. For 15141/15141 co-relation queries the response was YES. Maximal size of possible extension queue 2670. Compared 485717 event pairs, 25311 based on Foata normal form. 1154/54255 useless extension candidates. Maximal degree in co-relation 60797. Up to 45801 conditions per place. [2024-11-28 02:40:38,000 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 105 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2024-11-28 02:40:38,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 121 transitions, 527 flow [2024-11-28 02:40:38,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:40:38,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:40:38,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2024-11-28 02:40:38,002 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6895161290322581 [2024-11-28 02:40:38,002 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 155 flow. Second operand 4 states and 171 transitions. [2024-11-28 02:40:38,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 121 transitions, 527 flow [2024-11-28 02:40:38,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 121 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:40:38,030 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 181 flow [2024-11-28 02:40:38,031 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=61, 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=4, PETRI_FLOW=181, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2024-11-28 02:40:38,032 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 1 predicate places. [2024-11-28 02:40:38,032 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 181 flow [2024-11-28 02:40:38,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-28 02:40:38,032 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:40:38,032 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:38,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:40:38,033 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:40:38,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:38,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1651722949, now seen corresponding path program 1 times [2024-11-28 02:40:38,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:38,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106719922] [2024-11-28 02:40:38,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:38,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:38,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:38,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:38,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106719922] [2024-11-28 02:40:38,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106719922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:38,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:38,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:40:38,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456556767] [2024-11-28 02:40:38,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:38,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:40:38,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:38,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:40:38,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:40:38,091 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-28 02:40:38,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-28 02:40:38,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:40:38,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-28 02:40:38,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:40:41,400 INFO L124 PetriNetUnfolderBase]: 38050/57637 cut-off events. [2024-11-28 02:40:41,401 INFO L125 PetriNetUnfolderBase]: For 23240/24032 co-relation queries the response was YES. [2024-11-28 02:40:41,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129739 conditions, 57637 events. 38050/57637 cut-off events. For 23240/24032 co-relation queries the response was YES. Maximal size of possible extension queue 2401. Compared 443395 event pairs, 18817 based on Foata normal form. 0/49663 useless extension candidates. Maximal degree in co-relation 69608. Up to 29564 conditions per place. [2024-11-28 02:40:41,722 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 76 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2024-11-28 02:40:41,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 94 transitions, 453 flow [2024-11-28 02:40:41,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:40:41,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:40:41,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-28 02:40:41,725 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-28 02:40:41,725 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 181 flow. Second operand 3 states and 124 transitions. [2024-11-28 02:40:41,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 94 transitions, 453 flow [2024-11-28 02:40:41,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 94 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:40:41,786 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 202 flow [2024-11-28 02:40:41,787 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2024-11-28 02:40:41,787 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 3 predicate places. [2024-11-28 02:40:41,788 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 202 flow [2024-11-28 02:40:41,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-28 02:40:41,788 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:40:41,788 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:41,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:40:41,788 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:40:41,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:41,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1651722948, now seen corresponding path program 1 times [2024-11-28 02:40:41,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:41,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985827873] [2024-11-28 02:40:41,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:41,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:41,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:41,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985827873] [2024-11-28 02:40:41,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985827873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:41,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:41,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:40:41,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561880122] [2024-11-28 02:40:41,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:41,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:40:41,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:41,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:40:41,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:40:41,929 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-28 02:40:41,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-28 02:40:41,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:40:41,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-28 02:40:41,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:40:45,841 INFO L124 PetriNetUnfolderBase]: 37476/56046 cut-off events. [2024-11-28 02:40:45,842 INFO L125 PetriNetUnfolderBase]: For 29315/31187 co-relation queries the response was YES. [2024-11-28 02:40:45,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132687 conditions, 56046 events. 37476/56046 cut-off events. For 29315/31187 co-relation queries the response was YES. Maximal size of possible extension queue 1782. Compared 409526 event pairs, 10252 based on Foata normal form. 1332/55585 useless extension candidates. Maximal degree in co-relation 77752. Up to 38504 conditions per place. [2024-11-28 02:40:46,185 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 76 selfloop transitions, 3 changer transitions 1/94 dead transitions. [2024-11-28 02:40:46,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 94 transitions, 471 flow [2024-11-28 02:40:46,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:40:46,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:40:46,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-11-28 02:40:46,187 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6559139784946236 [2024-11-28 02:40:46,187 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 202 flow. Second operand 3 states and 122 transitions. [2024-11-28 02:40:46,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 94 transitions, 471 flow [2024-11-28 02:40:46,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 94 transitions, 463 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:40:46,511 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 213 flow [2024-11-28 02:40:46,511 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-11-28 02:40:46,512 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 4 predicate places. [2024-11-28 02:40:46,512 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 213 flow [2024-11-28 02:40:46,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-28 02:40:46,513 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:40:46,513 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:46,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:40:46,514 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:40:46,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:46,515 INFO L85 PathProgramCache]: Analyzing trace with hash 185936857, now seen corresponding path program 1 times [2024-11-28 02:40:46,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:46,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756748997] [2024-11-28 02:40:46,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:46,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:46,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:46,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:46,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756748997] [2024-11-28 02:40:46,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756748997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:46,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:46,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:40:46,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481324672] [2024-11-28 02:40:46,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:46,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:40:46,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:46,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:40:46,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:40:46,628 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-28 02:40:46,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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) [2024-11-28 02:40:46,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:40:46,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-28 02:40:46,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:40:53,718 INFO L124 PetriNetUnfolderBase]: 58559/87003 cut-off events. [2024-11-28 02:40:53,719 INFO L125 PetriNetUnfolderBase]: For 54724/57070 co-relation queries the response was YES. [2024-11-28 02:40:53,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213365 conditions, 87003 events. 58559/87003 cut-off events. For 54724/57070 co-relation queries the response was YES. Maximal size of possible extension queue 2400. Compared 658675 event pairs, 15866 based on Foata normal form. 3434/88766 useless extension candidates. Maximal degree in co-relation 81967. Up to 31457 conditions per place. [2024-11-28 02:40:54,156 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 119 selfloop transitions, 7 changer transitions 0/140 dead transitions. [2024-11-28 02:40:54,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 140 transitions, 725 flow [2024-11-28 02:40:54,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:40:54,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:40:54,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 184 transitions. [2024-11-28 02:40:54,158 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7419354838709677 [2024-11-28 02:40:54,158 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 213 flow. Second operand 4 states and 184 transitions. [2024-11-28 02:40:54,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 140 transitions, 725 flow [2024-11-28 02:40:54,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 140 transitions, 718 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:40:54,713 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 275 flow [2024-11-28 02:40:54,714 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-11-28 02:40:54,715 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2024-11-28 02:40:54,715 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 275 flow [2024-11-28 02:40:54,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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) [2024-11-28 02:40:54,715 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:40:54,715 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:54,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:40:54,715 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:40:54,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:54,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1832161054, now seen corresponding path program 1 times [2024-11-28 02:40:54,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:54,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927389024] [2024-11-28 02:40:54,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:54,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:54,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:54,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:54,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927389024] [2024-11-28 02:40:54,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927389024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:54,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:54,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:40:54,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126574250] [2024-11-28 02:40:54,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:54,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:40:54,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:54,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:40:54,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:40:54,812 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-28 02:40:54,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-11-28 02:40:54,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:40:54,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-28 02:40:54,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:41:04,180 INFO L124 PetriNetUnfolderBase]: 93759/136581 cut-off events. [2024-11-28 02:41:04,180 INFO L125 PetriNetUnfolderBase]: For 128820/134522 co-relation queries the response was YES. [2024-11-28 02:41:04,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351370 conditions, 136581 events. 93759/136581 cut-off events. For 128820/134522 co-relation queries the response was YES. Maximal size of possible extension queue 3690. Compared 1058927 event pairs, 53447 based on Foata normal form. 2630/134805 useless extension candidates. Maximal degree in co-relation 169748. Up to 97029 conditions per place. [2024-11-28 02:41:05,172 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 131 selfloop transitions, 4 changer transitions 0/147 dead transitions. [2024-11-28 02:41:05,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 147 transitions, 915 flow [2024-11-28 02:41:05,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:41:05,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:41:05,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-28 02:41:05,174 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-11-28 02:41:05,174 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 275 flow. Second operand 4 states and 164 transitions. [2024-11-28 02:41:05,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 147 transitions, 915 flow [2024-11-28 02:41:05,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 147 transitions, 915 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:41:05,913 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 304 flow [2024-11-28 02:41:05,913 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2024-11-28 02:41:05,913 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 13 predicate places. [2024-11-28 02:41:05,914 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 304 flow [2024-11-28 02:41:05,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-11-28 02:41:05,914 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:41:05,914 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:05,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:41:05,914 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:41:05,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:05,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1703292645, now seen corresponding path program 1 times [2024-11-28 02:41:05,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:05,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675600999] [2024-11-28 02:41:05,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:05,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:06,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:06,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:06,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675600999] [2024-11-28 02:41:06,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675600999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:06,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:41:06,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:41:06,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594990855] [2024-11-28 02:41:06,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:06,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:41:06,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:06,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:41:06,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:41:06,012 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-28 02:41:06,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 304 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-11-28 02:41:06,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:41:06,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-28 02:41:06,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand