./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:11:50,053 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:11:50,146 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:11:50,150 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:11:50,152 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:11:50,186 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:11:50,186 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:11:50,187 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:11:50,188 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:11:50,191 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:11:50,192 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:11:50,192 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:11:50,193 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:11:50,193 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:11:50,193 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:11:50,194 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:11:50,194 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:11:50,194 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:11:50,194 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:11:50,195 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:11:50,195 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:11:50,198 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:11:50,198 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:11:50,198 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:11:50,198 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:11:50,199 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:11:50,199 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:11:50,199 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:11:50,200 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:11:50,200 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:11:50,200 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:11:50,201 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:11:50,201 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:11:50,201 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:11:50,201 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:11:50,202 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:11:50,202 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:11:50,203 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:11:50,203 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:11:50,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:11:50,204 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:11:50,205 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:11:50,206 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:11:50,206 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:11:50,206 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 [2024-11-09 15:11:50,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:11:50,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:11:50,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:11:50,526 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:11:50,528 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:11:50,530 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2024-11-09 15:11:52,038 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:11:52,266 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:11:52,267 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2024-11-09 15:11:52,280 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/839424543/a379cf4d7a4e422fba3dda679f43e456/FLAGddf3ea269 [2024-11-09 15:11:52,298 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/839424543/a379cf4d7a4e422fba3dda679f43e456 [2024-11-09 15:11:52,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:11:52,303 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:11:52,305 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:11:52,306 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:11:52,311 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:11:52,312 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:11:52" (1/1) ... [2024-11-09 15:11:52,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f427c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:52, skipping insertion in model container [2024-11-09 15:11:52,313 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:11:52" (1/1) ... [2024-11-09 15:11:52,346 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:11:52,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:11:52,588 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:11:52,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:11:52,640 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:11:52,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:52 WrapperNode [2024-11-09 15:11:52,641 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:11:52,642 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:11:52,643 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:11:52,643 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:11:52,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:52" (1/1) ... [2024-11-09 15:11:52,659 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:52" (1/1) ... [2024-11-09 15:11:52,699 INFO L138 Inliner]: procedures = 25, calls = 74, calls flagged for inlining = 28, calls inlined = 34, statements flattened = 495 [2024-11-09 15:11:52,700 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:11:52,701 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:11:52,701 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:11:52,701 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:11:52,717 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:52" (1/1) ... [2024-11-09 15:11:52,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:52" (1/1) ... [2024-11-09 15:11:52,727 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:52" (1/1) ... [2024-11-09 15:11:52,747 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-09 15:11:52,747 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:52" (1/1) ... [2024-11-09 15:11:52,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:52" (1/1) ... [2024-11-09 15:11:52,760 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:52" (1/1) ... [2024-11-09 15:11:52,766 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:52" (1/1) ... [2024-11-09 15:11:52,769 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:52" (1/1) ... [2024-11-09 15:11:52,771 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:52" (1/1) ... [2024-11-09 15:11:52,775 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:11:52,776 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:11:52,776 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:11:52,776 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:11:52,777 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:52" (1/1) ... [2024-11-09 15:11:52,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:11:52,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:11:52,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 15:11:52,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 15:11:52,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:11:52,867 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:11:52,867 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:11:52,867 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:11:52,867 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:11:52,867 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 15:11:52,867 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 15:11:52,868 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-09 15:11:52,868 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-09 15:11:52,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:11:52,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:11:52,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:11:52,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:11:52,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 15:11:52,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 15:11:52,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:11:52,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:11:52,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:11:52,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:11:52,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:11:52,872 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:11:52,999 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:11:53,001 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:11:53,792 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:11:53,792 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:11:54,400 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:11:54,400 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-09 15:11:54,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:11:54 BoogieIcfgContainer [2024-11-09 15:11:54,401 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:11:54,404 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:11:54,404 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:11:54,408 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:11:54,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:11:52" (1/3) ... [2024-11-09 15:11:54,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3651b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:11:54, skipping insertion in model container [2024-11-09 15:11:54,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:52" (2/3) ... [2024-11-09 15:11:54,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3651b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:11:54, skipping insertion in model container [2024-11-09 15:11:54,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:11:54" (3/3) ... [2024-11-09 15:11:54,412 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2024-11-09 15:11:54,431 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:11:54,432 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-11-09 15:11:54,432 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:11:54,568 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-09 15:11:54,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 102 transitions, 232 flow [2024-11-09 15:11:54,665 INFO L124 PetriNetUnfolderBase]: 12/98 cut-off events. [2024-11-09 15:11:54,666 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-09 15:11:54,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 98 events. 12/98 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 323 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2024-11-09 15:11:54,673 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 102 transitions, 232 flow [2024-11-09 15:11:54,679 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 96 transitions, 213 flow [2024-11-09 15:11:54,691 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:11:54,699 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;@54c0cc6b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:11:54,700 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-09 15:11:54,703 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:11:54,704 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:11:54,704 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:11:54,704 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:54,705 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:11:54,706 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 15:11:54,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:54,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1463321, now seen corresponding path program 1 times [2024-11-09 15:11:54,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:54,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698271464] [2024-11-09 15:11:54,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:54,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:55,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:55,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698271464] [2024-11-09 15:11:55,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698271464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:11:55,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:11:55,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:11:55,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822041264] [2024-11-09 15:11:55,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:11:55,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:11:55,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:55,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:11:55,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:11:55,197 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 102 [2024-11-09 15:11:55,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 96 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-11-09 15:11:55,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:55,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 102 [2024-11-09 15:11:55,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:08,136 INFO L124 PetriNetUnfolderBase]: 97620/126352 cut-off events. [2024-11-09 15:12:08,137 INFO L125 PetriNetUnfolderBase]: For 3678/3678 co-relation queries the response was YES. [2024-11-09 15:12:08,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256534 conditions, 126352 events. 97620/126352 cut-off events. For 3678/3678 co-relation queries the response was YES. Maximal size of possible extension queue 3852. Compared 730912 event pairs, 86802 based on Foata normal form. 4/87316 useless extension candidates. Maximal degree in co-relation 249277. Up to 126251 conditions per place. [2024-11-09 15:12:09,045 INFO L140 encePairwiseOnDemand]: 65/102 looper letters, 71 selfloop transitions, 13 changer transitions 0/92 dead transitions. [2024-11-09 15:12:09,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 92 transitions, 373 flow [2024-11-09 15:12:09,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:12:09,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:12:09,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-11-09 15:12:09,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-11-09 15:12:09,060 INFO L175 Difference]: Start difference. First operand has 97 places, 96 transitions, 213 flow. Second operand 4 states and 156 transitions. [2024-11-09 15:12:09,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 92 transitions, 373 flow [2024-11-09 15:12:09,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 92 transitions, 360 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-09 15:12:09,216 INFO L231 Difference]: Finished difference. Result has 84 places, 92 transitions, 284 flow [2024-11-09 15:12:09,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=84, PETRI_TRANSITIONS=92} [2024-11-09 15:12:09,224 INFO L277 CegarLoopForPetriNet]: 97 programPoint places, -13 predicate places. [2024-11-09 15:12:09,225 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 92 transitions, 284 flow [2024-11-09 15:12:09,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-11-09 15:12:09,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:09,226 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:12:09,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:12:09,227 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 15:12:09,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:09,227 INFO L85 PathProgramCache]: Analyzing trace with hash 645593960, now seen corresponding path program 1 times [2024-11-09 15:12:09,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:09,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881908768] [2024-11-09 15:12:09,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:09,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:09,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:09,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:09,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881908768] [2024-11-09 15:12:09,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881908768] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:09,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976242882] [2024-11-09 15:12:09,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:09,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:09,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:09,368 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:12:09,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:12:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:09,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:12:09,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:09,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:09,560 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:12:09,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976242882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:09,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:12:09,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:12:09,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753896919] [2024-11-09 15:12:09,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:09,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:12:09,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:09,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:12:09,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:12:09,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 102 [2024-11-09 15:12:09,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 92 transitions, 284 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2024-11-09 15:12:09,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:09,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 102 [2024-11-09 15:12:09,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:19,238 INFO L124 PetriNetUnfolderBase]: 97620/126348 cut-off events. [2024-11-09 15:12:19,239 INFO L125 PetriNetUnfolderBase]: For 692/692 co-relation queries the response was YES. [2024-11-09 15:12:19,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255577 conditions, 126348 events. 97620/126348 cut-off events. For 692/692 co-relation queries the response was YES. Maximal size of possible extension queue 3852. Compared 730698 event pairs, 86802 based on Foata normal form. 4/87319 useless extension candidates. Maximal degree in co-relation 255481. Up to 126231 conditions per place. [2024-11-09 15:12:19,942 INFO L140 encePairwiseOnDemand]: 85/102 looper letters, 58 selfloop transitions, 22 changer transitions 0/88 dead transitions. [2024-11-09 15:12:19,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 88 transitions, 428 flow [2024-11-09 15:12:19,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:12:19,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:12:19,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-11-09 15:12:19,945 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2549019607843137 [2024-11-09 15:12:19,945 INFO L175 Difference]: Start difference. First operand has 84 places, 92 transitions, 284 flow. Second operand 6 states and 156 transitions. [2024-11-09 15:12:19,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 88 transitions, 428 flow [2024-11-09 15:12:19,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 88 transitions, 428 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:12:19,948 INFO L231 Difference]: Finished difference. Result has 85 places, 88 transitions, 312 flow [2024-11-09 15:12:19,949 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=85, PETRI_TRANSITIONS=88} [2024-11-09 15:12:19,949 INFO L277 CegarLoopForPetriNet]: 97 programPoint places, -12 predicate places. [2024-11-09 15:12:19,949 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 88 transitions, 312 flow [2024-11-09 15:12:19,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2024-11-09 15:12:19,950 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:19,950 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:12:19,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 15:12:20,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:20,155 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 15:12:20,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:20,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1461422240, now seen corresponding path program 1 times [2024-11-09 15:12:20,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:20,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161120537] [2024-11-09 15:12:20,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:20,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:20,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:20,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:20,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161120537] [2024-11-09 15:12:20,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161120537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:20,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200551802] [2024-11-09 15:12:20,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:20,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:20,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:20,272 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:12:20,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:12:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:20,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:12:20,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:20,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:20,404 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:12:20,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:20,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200551802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:12:20,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:12:20,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:12:20,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232800153] [2024-11-09 15:12:20,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:12:20,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:12:20,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:20,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:12:20,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:12:20,507 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 102 [2024-11-09 15:12:20,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 88 transitions, 312 flow. Second operand has 12 states, 12 states have (on average 13.083333333333334) internal successors, (157), 12 states have internal predecessors, (157), 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) [2024-11-09 15:12:20,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:20,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 102 [2024-11-09 15:12:20,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand