./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 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:46:38,016 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:46:38,063 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:46:38,068 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:46:38,069 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:46:38,095 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:46:38,098 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:46:38,098 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:46:38,099 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:46:38,099 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:46:38,099 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:46:38,100 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:46:38,100 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:46:38,101 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:46:38,102 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:46:38,103 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:46:38,103 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:46:38,103 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:46:38,103 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:46:38,104 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:46:38,104 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:46:38,107 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:46:38,107 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:46:38,107 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:46:38,107 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:46:38,107 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:46:38,107 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:46:38,108 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:46:38,108 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:46:38,108 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:46:38,108 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:46:38,108 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:46:38,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:46:38,109 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:46:38,109 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:46:38,109 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:46:38,110 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:46:38,110 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:46:38,111 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:46:38,111 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:46:38,111 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:46:38,111 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:46:38,111 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b78dfc9c2705d92d2bcea2c224e1a0e17a9d3d516f404185e5eda6bc0d05a15c [2024-11-22 13:46:38,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:46:38,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:46:38,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:46:38,364 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:46:38,367 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:46:38,368 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2024-11-22 13:46:39,613 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:46:39,764 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:46:39,764 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2024-11-22 13:46:39,771 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5da6212d/ff5cf6f061ab40c1af5c2bd803da641b/FLAG7b96d93c1 [2024-11-22 13:46:39,781 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5da6212d/ff5cf6f061ab40c1af5c2bd803da641b [2024-11-22 13:46:39,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:46:39,784 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:46:39,785 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:46:39,785 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:46:39,794 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:46:39,795 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:46:39" (1/1) ... [2024-11-22 13:46:39,796 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@165dd2df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:39, skipping insertion in model container [2024-11-22 13:46:39,796 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:46:39" (1/1) ... [2024-11-22 13:46:39,815 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:46:40,012 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] [2024-11-22 13:46:40,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:46:40,024 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:46:40,052 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] [2024-11-22 13:46:40,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:46:40,071 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:46:40,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:40 WrapperNode [2024-11-22 13:46:40,072 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:46:40,073 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:46:40,073 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:46:40,073 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:46:40,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:40" (1/1) ... [2024-11-22 13:46:40,085 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:40" (1/1) ... [2024-11-22 13:46:40,105 INFO L138 Inliner]: procedures = 22, calls = 20, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 210 [2024-11-22 13:46:40,106 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:46:40,107 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:46:40,107 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:46:40,107 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:46:40,116 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:40" (1/1) ... [2024-11-22 13:46:40,116 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:40" (1/1) ... [2024-11-22 13:46:40,119 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:40" (1/1) ... [2024-11-22 13:46:40,136 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]. [2024-11-22 13:46:40,136 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:40" (1/1) ... [2024-11-22 13:46:40,136 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:40" (1/1) ... [2024-11-22 13:46:40,140 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:40" (1/1) ... [2024-11-22 13:46:40,142 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:40" (1/1) ... [2024-11-22 13:46:40,143 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:40" (1/1) ... [2024-11-22 13:46:40,143 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:40" (1/1) ... [2024-11-22 13:46:40,145 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:46:40,146 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:46:40,146 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:46:40,146 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:46:40,147 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:40" (1/1) ... [2024-11-22 13:46:40,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:46:40,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:46:40,171 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) [2024-11-22 13:46:40,176 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 [2024-11-22 13:46:40,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:46:40,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 13:46:40,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 13:46:40,211 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 13:46:40,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 13:46:40,211 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-22 13:46:40,212 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-22 13:46:40,212 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-22 13:46:40,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-22 13:46:40,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:46:40,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-11-22 13:46:40,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-11-22 13:46:40,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-11-22 13:46:40,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-11-22 13:46:40,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:46:40,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:46:40,215 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:46:40,300 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:46:40,302 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:46:40,516 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:46:40,517 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:46:40,647 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:46:40,647 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 13:46:40,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:46:40 BoogieIcfgContainer [2024-11-22 13:46:40,648 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:46:40,649 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:46:40,649 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:46:40,652 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:46:40,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:46:39" (1/3) ... [2024-11-22 13:46:40,653 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269a4f17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:46:40, skipping insertion in model container [2024-11-22 13:46:40,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:40" (2/3) ... [2024-11-22 13:46:40,653 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269a4f17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:46:40, skipping insertion in model container [2024-11-22 13:46:40,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:46:40" (3/3) ... [2024-11-22 13:46:40,654 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2024-11-22 13:46:40,666 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:46:40,666 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:46:40,666 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:46:40,739 INFO L143 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2024-11-22 13:46:40,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 82 transitions, 230 flow [2024-11-22 13:46:40,816 INFO L124 PetriNetUnfolderBase]: 4/70 cut-off events. [2024-11-22 13:46:40,818 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-22 13:46:40,822 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 118 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. [2024-11-22 13:46:40,822 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 82 transitions, 230 flow [2024-11-22 13:46:40,826 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 69 transitions, 186 flow [2024-11-22 13:46:40,855 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:46:40,861 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;@2da3c5e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:46:40,861 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-22 13:46:40,883 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:46:40,884 INFO L124 PetriNetUnfolderBase]: 4/68 cut-off events. [2024-11-22 13:46:40,884 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-22 13:46:40,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:40,889 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] [2024-11-22 13:46:40,889 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-22 13:46:40,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:40,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1393916505, now seen corresponding path program 1 times [2024-11-22 13:46:40,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:40,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819685732] [2024-11-22 13:46:40,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:40,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:41,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:41,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:41,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819685732] [2024-11-22 13:46:41,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819685732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:41,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:41,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:46:41,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820002941] [2024-11-22 13:46:41,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:41,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:46:41,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:41,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:46:41,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:46:41,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-11-22 13:46:41,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 69 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-22 13:46:41,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:41,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-11-22 13:46:41,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:43,545 INFO L124 PetriNetUnfolderBase]: 14053/19607 cut-off events. [2024-11-22 13:46:43,546 INFO L125 PetriNetUnfolderBase]: For 1988/1988 co-relation queries the response was YES. [2024-11-22 13:46:43,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41191 conditions, 19607 events. 14053/19607 cut-off events. For 1988/1988 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 111288 event pairs, 8277 based on Foata normal form. 480/19128 useless extension candidates. Maximal degree in co-relation 40794. Up to 13270 conditions per place. [2024-11-22 13:46:43,654 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 67 selfloop transitions, 4 changer transitions 0/90 dead transitions. [2024-11-22 13:46:43,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 391 flow [2024-11-22 13:46:43,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:46:43,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:46:43,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-11-22 13:46:43,664 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5697674418604651 [2024-11-22 13:46:43,666 INFO L175 Difference]: Start difference. First operand has 84 places, 69 transitions, 186 flow. Second operand 3 states and 147 transitions. [2024-11-22 13:46:43,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 391 flow [2024-11-22 13:46:43,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 90 transitions, 345 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-22 13:46:43,728 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 168 flow [2024-11-22 13:46:43,729 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} [2024-11-22 13:46:43,731 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -9 predicate places. [2024-11-22 13:46:43,732 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 168 flow [2024-11-22 13:46:43,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-22 13:46:43,732 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:43,732 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] [2024-11-22 13:46:43,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:46:43,733 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-22 13:46:43,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:43,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1117834938, now seen corresponding path program 1 times [2024-11-22 13:46:43,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:43,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106728620] [2024-11-22 13:46:43,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:43,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:43,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:43,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:43,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106728620] [2024-11-22 13:46:43,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106728620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:43,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:43,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:46:43,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594962215] [2024-11-22 13:46:43,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:43,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:46:43,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:43,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:46:43,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:46:43,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-11-22 13:46:43,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-22 13:46:43,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:43,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-11-22 13:46:43,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:45,100 INFO L124 PetriNetUnfolderBase]: 13081/19085 cut-off events. [2024-11-22 13:46:45,101 INFO L125 PetriNetUnfolderBase]: For 1234/1234 co-relation queries the response was YES. [2024-11-22 13:46:45,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37939 conditions, 19085 events. 13081/19085 cut-off events. For 1234/1234 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 118255 event pairs, 7989 based on Foata normal form. 316/18251 useless extension candidates. Maximal degree in co-relation 16196. Up to 13117 conditions per place. [2024-11-22 13:46:45,172 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 68 selfloop transitions, 4 changer transitions 0/91 dead transitions. [2024-11-22 13:46:45,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 91 transitions, 369 flow [2024-11-22 13:46:45,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:46:45,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:46:45,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2024-11-22 13:46:45,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5736434108527132 [2024-11-22 13:46:45,177 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 168 flow. Second operand 3 states and 148 transitions. [2024-11-22 13:46:45,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 91 transitions, 369 flow [2024-11-22 13:46:45,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 91 transitions, 359 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 13:46:45,182 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 174 flow [2024-11-22 13:46:45,182 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} [2024-11-22 13:46:45,183 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -8 predicate places. [2024-11-22 13:46:45,184 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 174 flow [2024-11-22 13:46:45,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-22 13:46:45,185 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:45,185 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] [2024-11-22 13:46:45,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:46:45,185 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-22 13:46:45,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:45,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1579026690, now seen corresponding path program 2 times [2024-11-22 13:46:45,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:45,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363446019] [2024-11-22 13:46:45,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:46:45,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:45,212 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:46:45,213 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:45,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:45,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:45,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363446019] [2024-11-22 13:46:45,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363446019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:45,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:45,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:46:45,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850598224] [2024-11-22 13:46:45,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:45,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:46:45,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:45,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:46:45,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:46:45,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-11-22 13:46:45,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-22 13:46:45,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:45,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-11-22 13:46:45,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:46,371 INFO L124 PetriNetUnfolderBase]: 11919/17063 cut-off events. [2024-11-22 13:46:46,372 INFO L125 PetriNetUnfolderBase]: For 1688/1716 co-relation queries the response was YES. [2024-11-22 13:46:46,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35062 conditions, 17063 events. 11919/17063 cut-off events. For 1688/1716 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 99863 event pairs, 7037 based on Foata normal form. 348/16362 useless extension candidates. Maximal degree in co-relation 12583. Up to 11081 conditions per place. [2024-11-22 13:46:46,574 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 69 selfloop transitions, 4 changer transitions 0/92 dead transitions. [2024-11-22 13:46:46,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 92 transitions, 379 flow [2024-11-22 13:46:46,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:46:46,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:46:46,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-11-22 13:46:46,576 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5775193798449613 [2024-11-22 13:46:46,576 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 174 flow. Second operand 3 states and 149 transitions. [2024-11-22 13:46:46,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 92 transitions, 379 flow [2024-11-22 13:46:46,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 92 transitions, 369 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 13:46:46,580 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 180 flow [2024-11-22 13:46:46,580 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=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-11-22 13:46:46,581 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -7 predicate places. [2024-11-22 13:46:46,581 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 180 flow [2024-11-22 13:46:46,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-22 13:46:46,582 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:46,582 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] [2024-11-22 13:46:46,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:46:46,583 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-22 13:46:46,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:46,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1751838118, now seen corresponding path program 3 times [2024-11-22 13:46:46,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:46,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481664449] [2024-11-22 13:46:46,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:46:46,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:46,614 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:46:46,615 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:47,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:47,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:47,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481664449] [2024-11-22 13:46:47,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481664449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:47,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:47,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-22 13:46:47,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837153303] [2024-11-22 13:46:47,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:47,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 13:46:47,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:47,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 13:46:47,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2024-11-22 13:46:47,232 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 86 [2024-11-22 13:46:47,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 180 flow. Second operand has 20 states, 20 states have (on average 18.75) internal successors, (375), 20 states have internal predecessors, (375), 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) [2024-11-22 13:46:47,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:47,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 86 [2024-11-22 13:46:47,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:53,565 INFO L124 PetriNetUnfolderBase]: 57138/76185 cut-off events. [2024-11-22 13:46:53,566 INFO L125 PetriNetUnfolderBase]: For 9138/9138 co-relation queries the response was YES. [2024-11-22 13:46:53,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159492 conditions, 76185 events. 57138/76185 cut-off events. For 9138/9138 co-relation queries the response was YES. Maximal size of possible extension queue 1351. Compared 416243 event pairs, 5441 based on Foata normal form. 1/73356 useless extension candidates. Maximal degree in co-relation 63161. Up to 36443 conditions per place. [2024-11-22 13:46:54,113 INFO L140 encePairwiseOnDemand]: 64/86 looper letters, 521 selfloop transitions, 200 changer transitions 20/751 dead transitions. [2024-11-22 13:46:54,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 751 transitions, 3271 flow [2024-11-22 13:46:54,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-22 13:46:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-11-22 13:46:54,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 1654 transitions. [2024-11-22 13:46:54,124 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33741330069359443 [2024-11-22 13:46:54,124 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 180 flow. Second operand 57 states and 1654 transitions. [2024-11-22 13:46:54,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 751 transitions, 3271 flow [2024-11-22 13:46:54,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 751 transitions, 3235 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 13:46:54,160 INFO L231 Difference]: Finished difference. Result has 158 places, 292 transitions, 1380 flow [2024-11-22 13:46:54,161 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=1380, PETRI_PLACES=158, PETRI_TRANSITIONS=292} [2024-11-22 13:46:54,161 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 74 predicate places. [2024-11-22 13:46:54,162 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 292 transitions, 1380 flow [2024-11-22 13:46:54,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 18.75) internal successors, (375), 20 states have internal predecessors, (375), 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) [2024-11-22 13:46:54,162 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:54,162 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] [2024-11-22 13:46:54,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:46:54,163 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-22 13:46:54,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:54,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1986151880, now seen corresponding path program 4 times [2024-11-22 13:46:54,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:54,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172030007] [2024-11-22 13:46:54,166 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:46:54,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:54,191 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:46:54,192 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:54,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:54,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:54,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172030007] [2024-11-22 13:46:54,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172030007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:54,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:54,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:46:54,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577881437] [2024-11-22 13:46:54,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:54,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:46:54,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:54,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:46:54,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:46:54,275 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-11-22 13:46:54,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 292 transitions, 1380 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-22 13:46:54,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:54,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-11-22 13:46:54,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:57,516 INFO L124 PetriNetUnfolderBase]: 27704/40051 cut-off events. [2024-11-22 13:46:57,516 INFO L125 PetriNetUnfolderBase]: For 86602/87398 co-relation queries the response was YES. [2024-11-22 13:46:57,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113412 conditions, 40051 events. 27704/40051 cut-off events. For 86602/87398 co-relation queries the response was YES. Maximal size of possible extension queue 1019. Compared 256052 event pairs, 13088 based on Foata normal form. 1406/38659 useless extension candidates. Maximal degree in co-relation 113367. Up to 26051 conditions per place. [2024-11-22 13:46:58,024 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 140 selfloop transitions, 4 changer transitions 0/300 dead transitions. [2024-11-22 13:46:58,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 300 transitions, 1723 flow [2024-11-22 13:46:58,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:46:58,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:46:58,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2024-11-22 13:46:58,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5658914728682171 [2024-11-22 13:46:58,027 INFO L175 Difference]: Start difference. First operand has 158 places, 292 transitions, 1380 flow. Second operand 3 states and 146 transitions. [2024-11-22 13:46:58,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 300 transitions, 1723 flow [2024-11-22 13:46:58,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 300 transitions, 1709 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-22 13:46:58,407 INFO L231 Difference]: Finished difference. Result has 159 places, 274 transitions, 1318 flow [2024-11-22 13:46:58,407 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1318, PETRI_PLACES=159, PETRI_TRANSITIONS=274} [2024-11-22 13:46:58,408 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 75 predicate places. [2024-11-22 13:46:58,408 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 274 transitions, 1318 flow [2024-11-22 13:46:58,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-22 13:46:58,408 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:58,408 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] [2024-11-22 13:46:58,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:46:58,409 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-22 13:46:58,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:58,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1718060114, now seen corresponding path program 5 times [2024-11-22 13:46:58,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:58,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447412896] [2024-11-22 13:46:58,410 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:46:58,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:58,426 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:46:58,426 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:58,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:58,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:58,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447412896] [2024-11-22 13:46:58,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447412896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:58,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:58,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-22 13:46:58,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874734552] [2024-11-22 13:46:58,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:58,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 13:46:58,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:58,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 13:46:58,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2024-11-22 13:46:59,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 86 [2024-11-22 13:46:59,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 274 transitions, 1318 flow. Second operand has 22 states, 22 states have (on average 18.5) internal successors, (407), 22 states have internal predecessors, (407), 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) [2024-11-22 13:46:59,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:59,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 86 [2024-11-22 13:46:59,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand