./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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-min-max-inc-dec.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c01f4f7d2658db6d4a951cb25555f85a195a1e66c897cc0a3f349ba621d29da1 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:46:30,684 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:46:30,736 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:46:30,741 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:46:30,741 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:46:30,769 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:46:30,770 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:46:30,770 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:46:30,771 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:46:30,771 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:46:30,772 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:46:30,772 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:46:30,772 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:46:30,773 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:46:30,773 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:46:30,774 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:46:30,774 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:46:30,774 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:46:30,775 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:46:30,775 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:46:30,775 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:46:30,778 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:46:30,779 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:46:30,779 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:46:30,779 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:46:30,779 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:46:30,780 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:46:30,780 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:46:30,781 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:46:30,781 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:46:30,781 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:46:30,781 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:46:30,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:46:30,782 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:46:30,783 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:46:30,783 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:46:30,783 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:46:30,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:46:30,784 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:46:30,784 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:46:30,784 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:46:30,784 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:46:30,785 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c01f4f7d2658db6d4a951cb25555f85a195a1e66c897cc0a3f349ba621d29da1 [2024-11-09 02:46:31,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:46:31,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:46:31,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:46:31,107 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:46:31,108 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:46:31,109 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2024-11-09 02:46:32,480 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:46:32,706 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:46:32,706 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2024-11-09 02:46:32,716 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7576d0ed2/ad69d897f12645f183574d6354fddaad/FLAGa3fa396b7 [2024-11-09 02:46:32,731 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7576d0ed2/ad69d897f12645f183574d6354fddaad [2024-11-09 02:46:32,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:46:32,735 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:46:32,736 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:46:32,736 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:46:32,740 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:46:32,741 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:46:32" (1/1) ... [2024-11-09 02:46:32,741 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32ca533f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:46:32, skipping insertion in model container [2024-11-09 02:46:32,742 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:46:32" (1/1) ... [2024-11-09 02:46:32,767 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:46:32,968 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[2888,2901] [2024-11-09 02:46:32,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:46:32,985 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:46:33,008 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[2888,2901] [2024-11-09 02:46:33,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:46:33,030 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:46:33,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:46:33 WrapperNode [2024-11-09 02:46:33,031 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:46:33,032 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:46:33,032 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:46:33,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:46:33,038 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:46:33" (1/1) ... [2024-11-09 02:46:33,045 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:46:33" (1/1) ... [2024-11-09 02:46:33,066 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 151 [2024-11-09 02:46:33,066 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:46:33,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:46:33,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:46:33,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:46:33,078 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:46:33" (1/1) ... [2024-11-09 02:46:33,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:46:33" (1/1) ... [2024-11-09 02:46:33,083 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:46:33" (1/1) ... [2024-11-09 02:46:33,099 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-09 02:46:33,100 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:46:33" (1/1) ... [2024-11-09 02:46:33,100 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:46:33" (1/1) ... [2024-11-09 02:46:33,106 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:46:33" (1/1) ... [2024-11-09 02:46:33,111 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:46:33" (1/1) ... [2024-11-09 02:46:33,112 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:46:33" (1/1) ... [2024-11-09 02:46:33,114 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:46:33" (1/1) ... [2024-11-09 02:46:33,117 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:46:33,117 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:46:33,118 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:46:33,118 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:46:33,120 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:46:33" (1/1) ... [2024-11-09 02:46:33,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:46:33,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:46:33,160 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 02:46:33,162 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 02:46:33,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:46:33,201 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:46:33,201 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:46:33,201 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:46:33,201 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:46:33,201 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 02:46:33,202 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 02:46:33,202 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-09 02:46:33,202 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-09 02:46:33,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:46:33,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:46:33,203 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-11-09 02:46:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-11-09 02:46:33,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:46:33,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:46:33,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 02:46:33,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:46:33,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:46:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:46:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:46:33,205 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 02:46:33,307 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:46:33,309 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:46:33,614 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:46:33,615 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:46:33,847 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:46:33,847 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-09 02:46:33,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:46:33 BoogieIcfgContainer [2024-11-09 02:46:33,848 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:46:33,850 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:46:33,850 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:46:33,854 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:46:33,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:46:32" (1/3) ... [2024-11-09 02:46:33,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442d4172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:46:33, skipping insertion in model container [2024-11-09 02:46:33,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:46:33" (2/3) ... [2024-11-09 02:46:33,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442d4172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:46:33, skipping insertion in model container [2024-11-09 02:46:33,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:46:33" (3/3) ... [2024-11-09 02:46:33,856 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2024-11-09 02:46:33,873 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:46:33,874 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:46:33,874 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:46:33,952 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2024-11-09 02:46:34,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 73 transitions, 181 flow [2024-11-09 02:46:34,052 INFO L124 PetriNetUnfolderBase]: 7/68 cut-off events. [2024-11-09 02:46:34,053 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-09 02:46:34,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 68 events. 7/68 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 174 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2024-11-09 02:46:34,061 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 73 transitions, 181 flow [2024-11-09 02:46:34,065 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 67 transitions, 164 flow [2024-11-09 02:46:34,073 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:46:34,079 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;@228aaacd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:46:34,080 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 02:46:34,108 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:46:34,108 INFO L124 PetriNetUnfolderBase]: 7/66 cut-off events. [2024-11-09 02:46:34,108 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-09 02:46:34,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:46:34,109 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:46:34,110 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 02:46:34,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:46:34,116 INFO L85 PathProgramCache]: Analyzing trace with hash 64395005, now seen corresponding path program 1 times [2024-11-09 02:46:34,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:46:34,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226530940] [2024-11-09 02:46:34,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:46:34,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:46:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:46:34,580 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 02:46:34,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:46:34,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226530940] [2024-11-09 02:46:34,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226530940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:46:34,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:46:34,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:46:34,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872543729] [2024-11-09 02:46:34,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:46:34,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:46:34,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:46:34,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:46:34,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:46:34,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 73 [2024-11-09 02:46:34,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 02:46:34,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:46:34,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 73 [2024-11-09 02:46:34,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:46:43,922 INFO L124 PetriNetUnfolderBase]: 87344/116962 cut-off events. [2024-11-09 02:46:43,922 INFO L125 PetriNetUnfolderBase]: For 5900/5900 co-relation queries the response was YES. [2024-11-09 02:46:44,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227005 conditions, 116962 events. 87344/116962 cut-off events. For 5900/5900 co-relation queries the response was YES. Maximal size of possible extension queue 4930. Compared 818595 event pairs, 42022 based on Foata normal form. 1926/115171 useless extension candidates. Maximal degree in co-relation 213531. Up to 62298 conditions per place. [2024-11-09 02:46:44,955 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 71 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2024-11-09 02:46:44,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 96 transitions, 382 flow [2024-11-09 02:46:44,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:46:44,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:46:44,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2024-11-09 02:46:44,967 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6267123287671232 [2024-11-09 02:46:44,968 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 164 flow. Second operand 4 states and 183 transitions. [2024-11-09 02:46:44,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 96 transitions, 382 flow [2024-11-09 02:46:45,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 354 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-09 02:46:45,085 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 158 flow [2024-11-09 02:46:45,087 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2024-11-09 02:46:45,091 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -6 predicate places. [2024-11-09 02:46:45,093 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 158 flow [2024-11-09 02:46:45,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 02:46:45,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:46:45,094 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:46:45,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:46:45,095 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 02:46:45,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:46:45,096 INFO L85 PathProgramCache]: Analyzing trace with hash -693952894, now seen corresponding path program 1 times [2024-11-09 02:46:45,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:46:45,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222900863] [2024-11-09 02:46:45,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:46:45,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:46:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:46:45,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:46:45,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:46:45,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222900863] [2024-11-09 02:46:45,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222900863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:46:45,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:46:45,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:46:45,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229751429] [2024-11-09 02:46:45,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:46:45,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:46:45,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:46:45,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:46:45,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:46:45,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2024-11-09 02:46:45,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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 02:46:45,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:46:45,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2024-11-09 02:46:45,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:46:55,887 INFO L124 PetriNetUnfolderBase]: 127099/176460 cut-off events. [2024-11-09 02:46:55,887 INFO L125 PetriNetUnfolderBase]: For 15612/15612 co-relation queries the response was YES. [2024-11-09 02:46:56,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342401 conditions, 176460 events. 127099/176460 cut-off events. For 15612/15612 co-relation queries the response was YES. Maximal size of possible extension queue 6007. Compared 1337839 event pairs, 66837 based on Foata normal form. 3014/170774 useless extension candidates. Maximal degree in co-relation 29306. Up to 100615 conditions per place. [2024-11-09 02:46:57,109 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 76 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2024-11-09 02:46:57,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 100 transitions, 394 flow [2024-11-09 02:46:57,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:46:57,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:46:57,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2024-11-09 02:46:57,112 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6232876712328768 [2024-11-09 02:46:57,112 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 158 flow. Second operand 4 states and 182 transitions. [2024-11-09 02:46:57,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 100 transitions, 394 flow [2024-11-09 02:46:57,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 100 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 02:46:57,135 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 168 flow [2024-11-09 02:46:57,135 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2024-11-09 02:46:57,136 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -4 predicate places. [2024-11-09 02:46:57,136 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 168 flow [2024-11-09 02:46:57,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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 02:46:57,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:46:57,137 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:46:57,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:46:57,138 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 02:46:57,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:46:57,138 INFO L85 PathProgramCache]: Analyzing trace with hash -71884039, now seen corresponding path program 1 times [2024-11-09 02:46:57,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:46:57,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722771673] [2024-11-09 02:46:57,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:46:57,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:46:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:46:57,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:46:57,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:46:57,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722771673] [2024-11-09 02:46:57,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722771673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:46:57,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:46:57,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:46:57,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139030210] [2024-11-09 02:46:57,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:46:57,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:46:57,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:46:57,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:46:57,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:46:57,269 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2024-11-09 02:46:57,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 02:46:57,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:46:57,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2024-11-09 02:46:57,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:10,395 INFO L124 PetriNetUnfolderBase]: 162318/224273 cut-off events. [2024-11-09 02:47:10,395 INFO L125 PetriNetUnfolderBase]: For 27039/31553 co-relation queries the response was YES. [2024-11-09 02:47:11,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454226 conditions, 224273 events. 162318/224273 cut-off events. For 27039/31553 co-relation queries the response was YES. Maximal size of possible extension queue 5794. Compared 1671475 event pairs, 88812 based on Foata normal form. 8710/223611 useless extension candidates. Maximal degree in co-relation 147987. Up to 127999 conditions per place. [2024-11-09 02:47:11,961 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 77 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2024-11-09 02:47:11,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 101 transitions, 411 flow [2024-11-09 02:47:11,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:47:11,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:47:11,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2024-11-09 02:47:11,963 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6198630136986302 [2024-11-09 02:47:11,964 INFO L175 Difference]: Start difference. First operand has 72 places, 69 transitions, 168 flow. Second operand 4 states and 181 transitions. [2024-11-09 02:47:11,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 101 transitions, 411 flow [2024-11-09 02:47:11,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 101 transitions, 406 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 02:47:11,979 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 178 flow [2024-11-09 02:47:11,979 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2024-11-09 02:47:11,981 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -2 predicate places. [2024-11-09 02:47:11,981 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 178 flow [2024-11-09 02:47:11,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 02:47:11,982 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:11,982 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:47:11,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:47:11,982 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 02:47:11,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:11,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1739328176, now seen corresponding path program 1 times [2024-11-09 02:47:11,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:11,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22706786] [2024-11-09 02:47:11,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:11,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:12,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:47:12,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:12,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22706786] [2024-11-09 02:47:12,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22706786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:47:12,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:47:12,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:47:12,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627897372] [2024-11-09 02:47:12,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:47:12,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:47:12,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:12,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:47:12,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:47:12,121 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 73 [2024-11-09 02:47:12,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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 02:47:12,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:12,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 73 [2024-11-09 02:47:12,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand