./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe016_power.oepc.i --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/pthread-wmm/safe016_power.oepc.i -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 a45428c1422efa85fd947d764edf0847add56b17c38e18f54072b18b642fedaf --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:15:28,592 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:15:28,635 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:15:28,638 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:15:28,640 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:15:28,669 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:15:28,669 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:15:28,670 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:15:28,671 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:15:28,671 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:15:28,672 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:15:28,672 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:15:28,672 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:15:28,673 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:15:28,674 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:15:28,675 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:15:28,675 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:15:28,675 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:15:28,675 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:15:28,676 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:15:28,679 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:15:28,679 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:15:28,679 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:15:28,680 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:15:28,680 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:15:28,680 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:15:28,680 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:15:28,680 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:15:28,681 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:15:28,681 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:15:28,681 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:15:28,681 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:15:28,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:15:28,681 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:15:28,682 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:15:28,682 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:15:28,682 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:15:28,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:15:28,682 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:15:28,682 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:15:28,683 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:15:28,683 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:15:28,683 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a45428c1422efa85fd947d764edf0847add56b17c38e18f54072b18b642fedaf [2024-11-16 19:15:28,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:15:28,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:15:28,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:15:28,965 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:15:28,966 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:15:28,967 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe016_power.oepc.i [2024-11-16 19:15:30,470 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:15:30,725 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:15:30,726 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_power.oepc.i [2024-11-16 19:15:30,749 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b77c644c/658557c652e44bccadeeb9417465badd/FLAGb6819f7fc [2024-11-16 19:15:30,763 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b77c644c/658557c652e44bccadeeb9417465badd [2024-11-16 19:15:30,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:15:30,767 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:15:30,769 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:15:30,769 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:15:30,774 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:15:30,774 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:15:30" (1/1) ... [2024-11-16 19:15:30,776 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1272ced0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:30, skipping insertion in model container [2024-11-16 19:15:30,776 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:15:30" (1/1) ... [2024-11-16 19:15:30,821 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:15:30,992 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/pthread-wmm/safe016_power.oepc.i[995,1008] [2024-11-16 19:15:31,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:15:31,195 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:15:31,212 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/pthread-wmm/safe016_power.oepc.i[995,1008] [2024-11-16 19:15:31,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:15:31,323 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:15:31,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:31 WrapperNode [2024-11-16 19:15:31,324 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:15:31,325 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:15:31,325 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:15:31,325 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:15:31,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:31" (1/1) ... [2024-11-16 19:15:31,346 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:31" (1/1) ... [2024-11-16 19:15:31,374 INFO L138 Inliner]: procedures = 176, calls = 71, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 174 [2024-11-16 19:15:31,375 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:15:31,375 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:15:31,375 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:15:31,375 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:15:31,391 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:31" (1/1) ... [2024-11-16 19:15:31,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:31" (1/1) ... [2024-11-16 19:15:31,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:31" (1/1) ... [2024-11-16 19:15:31,428 INFO L175 MemorySlicer]: Split 26 memory accesses to 2 slices as follows [2, 24]. 92 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 9 writes are split as follows [0, 9]. [2024-11-16 19:15:31,429 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:31" (1/1) ... [2024-11-16 19:15:31,429 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:31" (1/1) ... [2024-11-16 19:15:31,442 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:31" (1/1) ... [2024-11-16 19:15:31,446 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:31" (1/1) ... [2024-11-16 19:15:31,447 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:31" (1/1) ... [2024-11-16 19:15:31,449 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:31" (1/1) ... [2024-11-16 19:15:31,455 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:15:31,460 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:15:31,460 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:15:31,460 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:15:31,460 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:31" (1/1) ... [2024-11-16 19:15:31,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:15:31,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:15:31,500 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 19:15:31,502 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 19:15:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 19:15:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 19:15:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 19:15:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 19:15:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-16 19:15:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:15:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-16 19:15:31,541 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-16 19:15:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-16 19:15:31,542 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-16 19:15:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-16 19:15:31,542 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-16 19:15:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-16 19:15:31,542 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-16 19:15:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:15:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:15:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-16 19:15:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:15:31,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:15:31,544 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 19:15:31,700 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:15:31,703 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:15:32,047 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:15:32,047 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:15:32,407 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:15:32,408 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:15:32,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:15:32 BoogieIcfgContainer [2024-11-16 19:15:32,409 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:15:32,411 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:15:32,411 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:15:32,414 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:15:32,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:15:30" (1/3) ... [2024-11-16 19:15:32,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1afa36b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:15:32, skipping insertion in model container [2024-11-16 19:15:32,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:31" (2/3) ... [2024-11-16 19:15:32,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1afa36b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:15:32, skipping insertion in model container [2024-11-16 19:15:32,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:15:32" (3/3) ... [2024-11-16 19:15:32,417 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_power.oepc.i [2024-11-16 19:15:32,432 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:15:32,432 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:15:32,433 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:15:32,490 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 19:15:32,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 45 transitions, 106 flow [2024-11-16 19:15:32,546 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2024-11-16 19:15:32,547 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:15:32,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-16 19:15:32,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 45 transitions, 106 flow [2024-11-16 19:15:32,556 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 38 transitions, 88 flow [2024-11-16 19:15:32,565 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:15:32,573 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;@54297dd0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:15:32,573 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-16 19:15:32,589 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:15:32,590 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-11-16 19:15:32,590 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:15:32,591 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:15:32,591 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:15:32,592 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:15:32,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:15:32,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1026017281, now seen corresponding path program 1 times [2024-11-16 19:15:32,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:15:32,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018856446] [2024-11-16 19:15:32,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:15:32,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:15:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:15:33,220 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 19:15:33,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:15:33,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018856446] [2024-11-16 19:15:33,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018856446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:15:33,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:15:33,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:15:33,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153987500] [2024-11-16 19:15:33,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:15:33,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:15:33,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:15:33,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:15:33,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:15:33,254 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-16 19:15:33,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 19:15:33,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:15:33,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-16 19:15:33,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:15:38,120 INFO L124 PetriNetUnfolderBase]: 27202/36970 cut-off events. [2024-11-16 19:15:38,120 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2024-11-16 19:15:38,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73595 conditions, 36970 events. 27202/36970 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 1238. Compared 217410 event pairs, 3682 based on Foata normal form. 900/37857 useless extension candidates. Maximal degree in co-relation 73583. Up to 26491 conditions per place. [2024-11-16 19:15:38,366 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 50 selfloop transitions, 2 changer transitions 65/122 dead transitions. [2024-11-16 19:15:38,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 122 transitions, 493 flow [2024-11-16 19:15:38,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:15:38,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:15:38,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-11-16 19:15:38,378 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-11-16 19:15:38,379 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 88 flow. Second operand 7 states and 182 transitions. [2024-11-16 19:15:38,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 122 transitions, 493 flow [2024-11-16 19:15:38,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 122 transitions, 488 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-16 19:15:38,394 INFO L231 Difference]: Finished difference. Result has 58 places, 38 transitions, 100 flow [2024-11-16 19:15:38,396 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=100, PETRI_PLACES=58, PETRI_TRANSITIONS=38} [2024-11-16 19:15:38,400 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2024-11-16 19:15:38,401 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 38 transitions, 100 flow [2024-11-16 19:15:38,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 19:15:38,401 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:15:38,401 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:15:38,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:15:38,402 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:15:38,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:15:38,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1263763614, now seen corresponding path program 1 times [2024-11-16 19:15:38,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:15:38,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933047472] [2024-11-16 19:15:38,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:15:38,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:15:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:15:38,814 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 19:15:38,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:15:38,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933047472] [2024-11-16 19:15:38,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933047472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:15:38,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:15:38,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:15:38,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494424405] [2024-11-16 19:15:38,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:15:38,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:15:38,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:15:38,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:15:38,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:15:38,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-16 19:15:38,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 38 transitions, 100 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:15:38,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:15:38,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-16 19:15:38,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:15:45,188 INFO L124 PetriNetUnfolderBase]: 37581/50603 cut-off events. [2024-11-16 19:15:45,188 INFO L125 PetriNetUnfolderBase]: For 4980/4980 co-relation queries the response was YES. [2024-11-16 19:15:45,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108590 conditions, 50603 events. 37581/50603 cut-off events. For 4980/4980 co-relation queries the response was YES. Maximal size of possible extension queue 1687. Compared 305146 event pairs, 4265 based on Foata normal form. 750/51351 useless extension candidates. Maximal degree in co-relation 108575. Up to 24571 conditions per place. [2024-11-16 19:15:45,525 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 65 selfloop transitions, 4 changer transitions 69/143 dead transitions. [2024-11-16 19:15:45,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 143 transitions, 609 flow [2024-11-16 19:15:45,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 19:15:45,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-16 19:15:45,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-11-16 19:15:45,535 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-11-16 19:15:45,535 INFO L175 Difference]: Start difference. First operand has 58 places, 38 transitions, 100 flow. Second operand 8 states and 212 transitions. [2024-11-16 19:15:45,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 143 transitions, 609 flow [2024-11-16 19:15:46,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 143 transitions, 587 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-16 19:15:46,558 INFO L231 Difference]: Finished difference. Result has 61 places, 40 transitions, 130 flow [2024-11-16 19:15:46,558 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=130, PETRI_PLACES=61, PETRI_TRANSITIONS=40} [2024-11-16 19:15:46,559 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2024-11-16 19:15:46,559 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 40 transitions, 130 flow [2024-11-16 19:15:46,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:15:46,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:15:46,560 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] [2024-11-16 19:15:46,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:15:46,560 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:15:46,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:15:46,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1408370799, now seen corresponding path program 1 times [2024-11-16 19:15:46,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:15:46,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689679822] [2024-11-16 19:15:46,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:15:46,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:15:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:15:46,928 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 19:15:46,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:15:46,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689679822] [2024-11-16 19:15:46,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689679822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:15:46,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:15:46,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:15:46,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137502858] [2024-11-16 19:15:46,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:15:46,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:15:46,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:15:46,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:15:46,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:15:46,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-16 19:15:46,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 40 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:15:46,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:15:46,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-16 19:15:46,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:15:50,958 INFO L124 PetriNetUnfolderBase]: 22887/31161 cut-off events. [2024-11-16 19:15:50,958 INFO L125 PetriNetUnfolderBase]: For 18427/18427 co-relation queries the response was YES. [2024-11-16 19:15:51,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76618 conditions, 31161 events. 22887/31161 cut-off events. For 18427/18427 co-relation queries the response was YES. Maximal size of possible extension queue 942. Compared 174565 event pairs, 9735 based on Foata normal form. 600/31758 useless extension candidates. Maximal degree in co-relation 76601. Up to 23906 conditions per place. [2024-11-16 19:15:51,098 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 56 selfloop transitions, 2 changer transitions 57/120 dead transitions. [2024-11-16 19:15:51,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 120 transitions, 560 flow [2024-11-16 19:15:51,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:15:51,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:15:51,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-11-16 19:15:51,100 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5650793650793651 [2024-11-16 19:15:51,100 INFO L175 Difference]: Start difference. First operand has 61 places, 40 transitions, 130 flow. Second operand 7 states and 178 transitions. [2024-11-16 19:15:51,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 120 transitions, 560 flow [2024-11-16 19:15:51,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 120 transitions, 540 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-16 19:15:51,245 INFO L231 Difference]: Finished difference. Result has 64 places, 40 transitions, 135 flow [2024-11-16 19:15:51,245 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=135, PETRI_PLACES=64, PETRI_TRANSITIONS=40} [2024-11-16 19:15:51,246 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2024-11-16 19:15:51,246 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 40 transitions, 135 flow [2024-11-16 19:15:51,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:15:51,247 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:15:51,247 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] [2024-11-16 19:15:51,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:15:51,247 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:15:51,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:15:51,248 INFO L85 PathProgramCache]: Analyzing trace with hash 2094052521, now seen corresponding path program 1 times [2024-11-16 19:15:51,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:15:51,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021464507] [2024-11-16 19:15:51,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:15:51,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:15:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:15:51,494 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 19:15:51,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:15:51,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021464507] [2024-11-16 19:15:51,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021464507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:15:51,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:15:51,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 19:15:51,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996567791] [2024-11-16 19:15:51,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:15:51,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:15:51,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:15:51,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:15:51,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:15:51,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-16 19:15:51,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 40 transitions, 135 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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 19:15:51,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:15:51,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-16 19:15:51,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:15:57,575 INFO L124 PetriNetUnfolderBase]: 49864/67320 cut-off events. [2024-11-16 19:15:57,576 INFO L125 PetriNetUnfolderBase]: For 35403/35406 co-relation queries the response was YES. [2024-11-16 19:15:57,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157939 conditions, 67320 events. 49864/67320 cut-off events. For 35403/35406 co-relation queries the response was YES. Maximal size of possible extension queue 2057. Compared 411729 event pairs, 12769 based on Foata normal form. 1303/68605 useless extension candidates. Maximal degree in co-relation 157919. Up to 21137 conditions per place. [2024-11-16 19:15:57,945 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 58 selfloop transitions, 3 changer transitions 134/200 dead transitions. [2024-11-16 19:15:57,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 200 transitions, 923 flow [2024-11-16 19:15:57,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 19:15:57,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-16 19:15:57,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 296 transitions. [2024-11-16 19:15:57,949 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.597979797979798 [2024-11-16 19:15:57,949 INFO L175 Difference]: Start difference. First operand has 64 places, 40 transitions, 135 flow. Second operand 11 states and 296 transitions. [2024-11-16 19:15:57,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 200 transitions, 923 flow [2024-11-16 19:15:59,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 200 transitions, 883 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-11-16 19:15:59,466 INFO L231 Difference]: Finished difference. Result has 73 places, 40 transitions, 150 flow [2024-11-16 19:15:59,466 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=150, PETRI_PLACES=73, PETRI_TRANSITIONS=40} [2024-11-16 19:15:59,467 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 22 predicate places. [2024-11-16 19:15:59,467 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 40 transitions, 150 flow [2024-11-16 19:15:59,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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 19:15:59,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:15:59,467 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] [2024-11-16 19:15:59,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:15:59,468 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:15:59,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:15:59,468 INFO L85 PathProgramCache]: Analyzing trace with hash 891617700, now seen corresponding path program 1 times [2024-11-16 19:15:59,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:15:59,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119550045] [2024-11-16 19:15:59,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:15:59,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:15:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:16:00,823 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 19:16:00,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:16:00,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119550045] [2024-11-16 19:16:00,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119550045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:16:00,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:16:00,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 19:16:00,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078696266] [2024-11-16 19:16:00,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:16:00,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:16:00,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:16:00,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:16:00,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:16:00,827 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-16 19:16:00,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 40 transitions, 150 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:16:00,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:16:00,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-16 19:16:00,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:16:04,989 INFO L124 PetriNetUnfolderBase]: 31586/43642 cut-off events. [2024-11-16 19:16:04,989 INFO L125 PetriNetUnfolderBase]: For 54295/54297 co-relation queries the response was YES. [2024-11-16 19:16:05,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107727 conditions, 43642 events. 31586/43642 cut-off events. For 54295/54297 co-relation queries the response was YES. Maximal size of possible extension queue 1246. Compared 259220 event pairs, 7976 based on Foata normal form. 900/44542 useless extension candidates. Maximal degree in co-relation 107703. Up to 34285 conditions per place. [2024-11-16 19:16:05,286 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 61 selfloop transitions, 6 changer transitions 73/145 dead transitions. [2024-11-16 19:16:05,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 145 transitions, 749 flow [2024-11-16 19:16:05,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 19:16:05,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-16 19:16:05,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2024-11-16 19:16:05,291 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-11-16 19:16:05,291 INFO L175 Difference]: Start difference. First operand has 73 places, 40 transitions, 150 flow. Second operand 10 states and 230 transitions. [2024-11-16 19:16:05,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 145 transitions, 749 flow [2024-11-16 19:16:05,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 145 transitions, 693 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-11-16 19:16:05,826 INFO L231 Difference]: Finished difference. Result has 73 places, 45 transitions, 200 flow [2024-11-16 19:16:05,827 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=200, PETRI_PLACES=73, PETRI_TRANSITIONS=45} [2024-11-16 19:16:05,829 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 22 predicate places. [2024-11-16 19:16:05,829 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 45 transitions, 200 flow [2024-11-16 19:16:05,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:16:05,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:16:05,833 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] [2024-11-16 19:16:05,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:16:05,834 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:16:05,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:16:05,834 INFO L85 PathProgramCache]: Analyzing trace with hash 594574067, now seen corresponding path program 1 times [2024-11-16 19:16:05,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:16:05,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643280428] [2024-11-16 19:16:05,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:16:05,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:16:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:16:06,847 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 19:16:06,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:16:06,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643280428] [2024-11-16 19:16:06,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643280428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:16:06,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:16:06,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 19:16:06,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401739915] [2024-11-16 19:16:06,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:16:06,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:16:06,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:16:06,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:16:06,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:16:06,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-16 19:16:06,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 45 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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 19:16:06,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:16:06,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-16 19:16:06,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:16:11,601 INFO L124 PetriNetUnfolderBase]: 32320/44168 cut-off events. [2024-11-16 19:16:11,601 INFO L125 PetriNetUnfolderBase]: For 84519/84521 co-relation queries the response was YES. [2024-11-16 19:16:11,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122460 conditions, 44168 events. 32320/44168 cut-off events. For 84519/84521 co-relation queries the response was YES. Maximal size of possible extension queue 1244. Compared 259403 event pairs, 10986 based on Foata normal form. 720/44888 useless extension candidates. Maximal degree in co-relation 122435. Up to 20772 conditions per place. [2024-11-16 19:16:11,912 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 72 selfloop transitions, 14 changer transitions 57/148 dead transitions. [2024-11-16 19:16:11,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 148 transitions, 824 flow [2024-11-16 19:16:11,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 19:16:11,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-16 19:16:11,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-11-16 19:16:11,914 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5432098765432098 [2024-11-16 19:16:11,914 INFO L175 Difference]: Start difference. First operand has 73 places, 45 transitions, 200 flow. Second operand 9 states and 220 transitions. [2024-11-16 19:16:11,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 148 transitions, 824 flow [2024-11-16 19:16:12,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 148 transitions, 748 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-11-16 19:16:12,578 INFO L231 Difference]: Finished difference. Result has 75 places, 52 transitions, 281 flow [2024-11-16 19:16:12,578 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=281, PETRI_PLACES=75, PETRI_TRANSITIONS=52} [2024-11-16 19:16:12,579 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 24 predicate places. [2024-11-16 19:16:12,579 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 52 transitions, 281 flow [2024-11-16 19:16:12,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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 19:16:12,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:16:12,579 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] [2024-11-16 19:16:12,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:16:12,579 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:16:12,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:16:12,580 INFO L85 PathProgramCache]: Analyzing trace with hash -701864977, now seen corresponding path program 2 times [2024-11-16 19:16:12,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:16:12,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015463320] [2024-11-16 19:16:12,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:16:12,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:16:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:16:13,479 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 19:16:13,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:16:13,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015463320] [2024-11-16 19:16:13,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015463320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:16:13,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:16:13,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 19:16:13,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032207901] [2024-11-16 19:16:13,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:16:13,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:16:13,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:16:13,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:16:13,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-16 19:16:13,483 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-16 19:16:13,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 52 transitions, 281 flow. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 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 19:16:13,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:16:13,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-16 19:16:13,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand