./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-barrier.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 b78dfc9c2705d92d2bcea2c224e1a0e17a9d3d516f404185e5eda6bc0d05a15c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:26:20,775 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:26:20,832 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:26:20,835 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:26:20,835 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:26:20,850 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:26:20,851 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:26:20,851 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:26:20,851 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:26:20,852 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:26:20,852 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:26:20,852 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:26:20,855 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:26:20,855 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:26:20,857 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:26:20,857 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:26:20,857 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:26:20,858 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:26:20,858 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:26:20,858 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:26:20,861 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:26:20,862 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:26:20,862 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:26:20,862 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:26:20,862 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:26:20,862 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:26:20,862 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:26:20,863 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:26:20,863 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:26:20,863 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:26:20,863 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:26:20,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:26:20,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:26:20,864 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:26:20,864 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:26:20,864 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:26:20,864 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:26:20,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:26:20,864 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:26:20,865 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:26:20,865 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:26:20,865 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:26:20,865 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b78dfc9c2705d92d2bcea2c224e1a0e17a9d3d516f404185e5eda6bc0d05a15c [2024-11-16 19:26:21,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:26:21,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:26:21,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:26:21,078 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:26:21,079 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:26:21,079 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2024-11-16 19:26:22,250 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:26:22,422 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:26:22,422 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2024-11-16 19:26:22,430 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2509906d/be53d7a6860b4e8f89de9e09450d2306/FLAG40875e268 [2024-11-16 19:26:22,813 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2509906d/be53d7a6860b4e8f89de9e09450d2306 [2024-11-16 19:26:22,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:26:22,817 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:26:22,818 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:26:22,818 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:26:22,823 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:26:22,823 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:26:22" (1/1) ... [2024-11-16 19:26:22,824 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@110f0c8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:22, skipping insertion in model container [2024-11-16 19:26:22,824 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:26:22" (1/1) ... [2024-11-16 19:26:22,848 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:26:23,026 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/parallel-barrier.wvr.c[3418,3431] [2024-11-16 19:26:23,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:26:23,040 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:26:23,071 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/parallel-barrier.wvr.c[3418,3431] [2024-11-16 19:26:23,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:26:23,088 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:26:23,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:23 WrapperNode [2024-11-16 19:26:23,091 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:26:23,092 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:26:23,092 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:26:23,092 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:26:23,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:23" (1/1) ... [2024-11-16 19:26:23,106 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:23" (1/1) ... [2024-11-16 19:26:23,129 INFO L138 Inliner]: procedures = 22, calls = 20, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 210 [2024-11-16 19:26:23,130 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:26:23,131 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:26:23,131 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:26:23,131 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:26:23,139 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:23" (1/1) ... [2024-11-16 19:26:23,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:23" (1/1) ... [2024-11-16 19:26:23,142 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:23" (1/1) ... [2024-11-16 19:26:23,154 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 19:26:23,154 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:23" (1/1) ... [2024-11-16 19:26:23,154 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:23" (1/1) ... [2024-11-16 19:26:23,158 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:23" (1/1) ... [2024-11-16 19:26:23,158 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:23" (1/1) ... [2024-11-16 19:26:23,159 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:23" (1/1) ... [2024-11-16 19:26:23,160 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:23" (1/1) ... [2024-11-16 19:26:23,162 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:26:23,163 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:26:23,163 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:26:23,163 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:26:23,164 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:23" (1/1) ... [2024-11-16 19:26:23,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:26:23,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:23,191 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) [2024-11-16 19:26:23,193 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 [2024-11-16 19:26:23,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:26:23,234 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-16 19:26:23,234 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-16 19:26:23,234 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-16 19:26:23,234 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-16 19:26:23,234 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-16 19:26:23,235 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-16 19:26:23,235 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-16 19:26:23,235 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-16 19:26:23,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:26:23,236 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-11-16 19:26:23,236 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-11-16 19:26:23,236 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-11-16 19:26:23,236 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-11-16 19:26:23,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:26:23,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:26:23,239 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:26:23,355 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:26:23,358 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:26:23,577 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:26:23,577 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:26:23,728 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:26:23,729 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:26:23,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:26:23 BoogieIcfgContainer [2024-11-16 19:26:23,729 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:26:23,731 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:26:23,731 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:26:23,734 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:26:23,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:26:22" (1/3) ... [2024-11-16 19:26:23,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4529dfd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:26:23, skipping insertion in model container [2024-11-16 19:26:23,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:23" (2/3) ... [2024-11-16 19:26:23,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4529dfd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:26:23, skipping insertion in model container [2024-11-16 19:26:23,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:26:23" (3/3) ... [2024-11-16 19:26:23,738 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2024-11-16 19:26:23,753 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:26:23,753 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:26:23,753 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:26:23,825 INFO L143 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2024-11-16 19:26:23,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 82 transitions, 230 flow [2024-11-16 19:26:23,893 INFO L124 PetriNetUnfolderBase]: 4/70 cut-off events. [2024-11-16 19:26:23,894 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-16 19:26:23,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 70 events. 4/70 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 68. Up to 3 conditions per place. [2024-11-16 19:26:23,898 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 82 transitions, 230 flow [2024-11-16 19:26:23,903 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 69 transitions, 186 flow [2024-11-16 19:26:23,911 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:26:23,916 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;@5f75a4b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:26:23,916 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-16 19:26:23,933 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:26:23,933 INFO L124 PetriNetUnfolderBase]: 4/68 cut-off events. [2024-11-16 19:26:23,937 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-16 19:26:23,937 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:23,938 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:23,938 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-16 19:26:23,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:23,942 INFO L85 PathProgramCache]: Analyzing trace with hash -279960230, now seen corresponding path program 1 times [2024-11-16 19:26:23,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:23,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940499901] [2024-11-16 19:26:23,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:23,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:24,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:24,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:24,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940499901] [2024-11-16 19:26:24,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940499901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:24,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:24,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:26:24,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693392856] [2024-11-16 19:26:24,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:24,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:26:24,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:24,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:26:24,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:26:24,403 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 86 [2024-11-16 19:26:24,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 69 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-16 19:26:24,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:24,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 86 [2024-11-16 19:26:24,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:30,651 INFO L124 PetriNetUnfolderBase]: 90013/113964 cut-off events. [2024-11-16 19:26:30,651 INFO L125 PetriNetUnfolderBase]: For 7355/7355 co-relation queries the response was YES. [2024-11-16 19:26:30,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239389 conditions, 113964 events. 90013/113964 cut-off events. For 7355/7355 co-relation queries the response was YES. Maximal size of possible extension queue 1739. Compared 564349 event pairs, 53048 based on Foata normal form. 1984/113164 useless extension candidates. Maximal degree in co-relation 238400. Up to 76768 conditions per place. [2024-11-16 19:26:31,184 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 93 selfloop transitions, 4 changer transitions 0/98 dead transitions. [2024-11-16 19:26:31,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 98 transitions, 459 flow [2024-11-16 19:26:31,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:26:31,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:26:31,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-11-16 19:26:31,192 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46124031007751937 [2024-11-16 19:26:31,194 INFO L175 Difference]: Start difference. First operand has 84 places, 69 transitions, 186 flow. Second operand 3 states and 119 transitions. [2024-11-16 19:26:31,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 98 transitions, 459 flow [2024-11-16 19:26:31,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 98 transitions, 413 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-16 19:26:31,758 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 168 flow [2024-11-16 19:26:31,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2024-11-16 19:26:31,764 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -9 predicate places. [2024-11-16 19:26:31,765 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 168 flow [2024-11-16 19:26:31,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-16 19:26:31,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:31,765 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:31,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:26:31,766 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-16 19:26:31,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:31,770 INFO L85 PathProgramCache]: Analyzing trace with hash -744397046, now seen corresponding path program 2 times [2024-11-16 19:26:31,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:31,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952367362] [2024-11-16 19:26:31,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:31,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:31,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:31,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:31,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952367362] [2024-11-16 19:26:31,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952367362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:31,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:31,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:26:31,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027674222] [2024-11-16 19:26:31,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:31,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:26:31,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:31,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:26:31,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:26:31,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 86 [2024-11-16 19:26:31,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-16 19:26:31,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:31,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 86 [2024-11-16 19:26:31,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:35,741 INFO L124 PetriNetUnfolderBase]: 68959/87699 cut-off events. [2024-11-16 19:26:35,742 INFO L125 PetriNetUnfolderBase]: For 4094/4094 co-relation queries the response was YES. [2024-11-16 19:26:35,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182286 conditions, 87699 events. 68959/87699 cut-off events. For 4094/4094 co-relation queries the response was YES. Maximal size of possible extension queue 1272. Compared 420777 event pairs, 40785 based on Foata normal form. 1544/87308 useless extension candidates. Maximal degree in co-relation 80231. Up to 59185 conditions per place. [2024-11-16 19:26:36,087 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 92 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2024-11-16 19:26:36,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 431 flow [2024-11-16 19:26:36,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:26:36,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:26:36,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2024-11-16 19:26:36,091 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4573643410852713 [2024-11-16 19:26:36,091 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 168 flow. Second operand 3 states and 118 transitions. [2024-11-16 19:26:36,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 431 flow [2024-11-16 19:26:36,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 97 transitions, 419 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:26:36,135 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 174 flow [2024-11-16 19:26:36,135 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2024-11-16 19:26:36,136 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -8 predicate places. [2024-11-16 19:26:36,136 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 174 flow [2024-11-16 19:26:36,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-16 19:26:36,136 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:36,137 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:36,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:26:36,137 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-16 19:26:36,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:36,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1264244032, now seen corresponding path program 3 times [2024-11-16 19:26:36,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:36,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607099724] [2024-11-16 19:26:36,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:36,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:36,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:36,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607099724] [2024-11-16 19:26:36,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607099724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:36,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:36,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-16 19:26:36,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182751478] [2024-11-16 19:26:36,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:36,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 19:26:36,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:36,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 19:26:36,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2024-11-16 19:26:36,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 86 [2024-11-16 19:26:36,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 174 flow. Second operand has 20 states, 20 states have (on average 10.2) internal successors, (204), 20 states have internal predecessors, (204), 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) [2024-11-16 19:26:36,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:36,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 86 [2024-11-16 19:26:36,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:44,103 INFO L124 PetriNetUnfolderBase]: 89726/114031 cut-off events. [2024-11-16 19:26:44,103 INFO L125 PetriNetUnfolderBase]: For 6910/6910 co-relation queries the response was YES. [2024-11-16 19:26:44,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241259 conditions, 114031 events. 89726/114031 cut-off events. For 6910/6910 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 554619 event pairs, 9751 based on Foata normal form. 2/111315 useless extension candidates. Maximal degree in co-relation 107429. Up to 69274 conditions per place. [2024-11-16 19:26:44,715 INFO L140 encePairwiseOnDemand]: 63/86 looper letters, 475 selfloop transitions, 149 changer transitions 40/665 dead transitions. [2024-11-16 19:26:44,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 665 transitions, 2929 flow [2024-11-16 19:26:44,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-16 19:26:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-16 19:26:44,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 974 transitions. [2024-11-16 19:26:44,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.257399577167019 [2024-11-16 19:26:44,725 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 174 flow. Second operand 44 states and 974 transitions. [2024-11-16 19:26:44,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 665 transitions, 2929 flow [2024-11-16 19:26:44,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 665 transitions, 2879 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:26:44,870 INFO L231 Difference]: Finished difference. Result has 140 places, 217 transitions, 987 flow [2024-11-16 19:26:44,871 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=987, PETRI_PLACES=140, PETRI_TRANSITIONS=217} [2024-11-16 19:26:44,871 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 56 predicate places. [2024-11-16 19:26:44,871 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 217 transitions, 987 flow [2024-11-16 19:26:44,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.2) internal successors, (204), 20 states have internal predecessors, (204), 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) [2024-11-16 19:26:44,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:44,872 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:44,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:26:44,872 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-16 19:26:44,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:44,873 INFO L85 PathProgramCache]: Analyzing trace with hash 242518636, now seen corresponding path program 4 times [2024-11-16 19:26:44,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:44,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962143510] [2024-11-16 19:26:44,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:44,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:44,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:44,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:44,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962143510] [2024-11-16 19:26:44,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962143510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:44,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:44,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:26:44,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391429707] [2024-11-16 19:26:44,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:44,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:26:44,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:44,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:26:44,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:26:44,962 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 86 [2024-11-16 19:26:44,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 217 transitions, 987 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-16 19:26:44,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:44,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 86 [2024-11-16 19:26:44,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:50,881 INFO L124 PetriNetUnfolderBase]: 72761/92972 cut-off events. [2024-11-16 19:26:50,881 INFO L125 PetriNetUnfolderBase]: For 200575/200575 co-relation queries the response was YES. [2024-11-16 19:26:51,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285704 conditions, 92972 events. 72761/92972 cut-off events. For 200575/200575 co-relation queries the response was YES. Maximal size of possible extension queue 1144. Compared 449476 event pairs, 34524 based on Foata normal form. 1502/91968 useless extension candidates. Maximal degree in co-relation 258454. Up to 60890 conditions per place. [2024-11-16 19:26:51,490 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 285 selfloop transitions, 5 changer transitions 0/291 dead transitions. [2024-11-16 19:26:51,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 291 transitions, 1915 flow [2024-11-16 19:26:51,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:26:51,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:26:51,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-11-16 19:26:51,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-11-16 19:26:51,491 INFO L175 Difference]: Start difference. First operand has 140 places, 217 transitions, 987 flow. Second operand 3 states and 120 transitions. [2024-11-16 19:26:51,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 291 transitions, 1915 flow [2024-11-16 19:26:52,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 291 transitions, 1907 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-16 19:26:52,483 INFO L231 Difference]: Finished difference. Result has 142 places, 216 transitions, 1000 flow [2024-11-16 19:26:52,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1000, PETRI_PLACES=142, PETRI_TRANSITIONS=216} [2024-11-16 19:26:52,485 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 58 predicate places. [2024-11-16 19:26:52,485 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 216 transitions, 1000 flow [2024-11-16 19:26:52,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-16 19:26:52,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:52,486 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:52,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:26:52,486 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-16 19:26:52,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:52,486 INFO L85 PathProgramCache]: Analyzing trace with hash -936860973, now seen corresponding path program 1 times [2024-11-16 19:26:52,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:52,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397648674] [2024-11-16 19:26:52,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:52,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:53,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:53,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:53,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397648674] [2024-11-16 19:26:53,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397648674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:53,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:53,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-16 19:26:53,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892650703] [2024-11-16 19:26:53,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:53,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-16 19:26:53,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:53,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-16 19:26:53,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2024-11-16 19:26:53,032 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 86 [2024-11-16 19:26:53,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 216 transitions, 1000 flow. Second operand has 22 states, 22 states have (on average 9.909090909090908) internal successors, (218), 22 states have internal predecessors, (218), 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) [2024-11-16 19:26:53,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:53,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 86 [2024-11-16 19:26:53,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand