./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-array-sum.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 e4a4a131c0d4df2db1bf018027395318bc112945cbb20d5c862562c48934e5a1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:33:06,908 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:33:06,987 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:33:06,993 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:33:06,994 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:33:07,024 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:33:07,025 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:33:07,026 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:33:07,027 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:33:07,028 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:33:07,029 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:33:07,029 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:33:07,029 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:33:07,030 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:33:07,030 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:33:07,030 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:33:07,031 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:33:07,031 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:33:07,032 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:33:07,032 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:33:07,033 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:33:07,033 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:33:07,033 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:33:07,034 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:33:07,037 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:33:07,037 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:33:07,038 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:33:07,038 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:33:07,038 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:33:07,038 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:33:07,039 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:33:07,039 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:33:07,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:33:07,039 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:33:07,040 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:33:07,040 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:33:07,040 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:33:07,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:33:07,041 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:33:07,041 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:33:07,041 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:33:07,042 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:33:07,042 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4a4a131c0d4df2db1bf018027395318bc112945cbb20d5c862562c48934e5a1 [2024-11-10 10:33:07,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:33:07,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:33:07,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:33:07,290 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:33:07,290 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:33:07,291 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2024-11-10 10:33:08,809 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:33:09,000 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:33:09,001 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2024-11-10 10:33:09,009 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/164b00ac5/f1715734432e48fca688cd0181335ce1/FLAG89791156e [2024-11-10 10:33:09,021 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/164b00ac5/f1715734432e48fca688cd0181335ce1 [2024-11-10 10:33:09,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:33:09,025 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:33:09,027 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:33:09,027 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:33:09,035 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:33:09,036 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:33:09" (1/1) ... [2024-11-10 10:33:09,037 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a85d7ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:09, skipping insertion in model container [2024-11-10 10:33:09,037 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:33:09" (1/1) ... [2024-11-10 10:33:09,058 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:33:09,272 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c[2423,2436] [2024-11-10 10:33:09,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:33:09,305 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:33:09,333 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c[2423,2436] [2024-11-10 10:33:09,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:33:09,365 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:33:09,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:09 WrapperNode [2024-11-10 10:33:09,365 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:33:09,367 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:33:09,367 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:33:09,367 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:33:09,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:09" (1/1) ... [2024-11-10 10:33:09,385 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:09" (1/1) ... [2024-11-10 10:33:09,417 INFO L138 Inliner]: procedures = 22, calls = 31, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 259 [2024-11-10 10:33:09,418 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:33:09,418 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:33:09,418 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:33:09,419 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:33:09,430 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:09" (1/1) ... [2024-11-10 10:33:09,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:09" (1/1) ... [2024-11-10 10:33:09,434 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:09" (1/1) ... [2024-11-10 10:33:09,458 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-10 10:33:09,459 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:09" (1/1) ... [2024-11-10 10:33:09,459 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:09" (1/1) ... [2024-11-10 10:33:09,472 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:09" (1/1) ... [2024-11-10 10:33:09,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:09" (1/1) ... [2024-11-10 10:33:09,477 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:09" (1/1) ... [2024-11-10 10:33:09,479 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:09" (1/1) ... [2024-11-10 10:33:09,482 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:33:09,485 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:33:09,485 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:33:09,485 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:33:09,486 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:09" (1/1) ... [2024-11-10 10:33:09,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:33:09,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:33:09,519 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) [2024-11-10 10:33:09,523 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 [2024-11-10 10:33:09,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:33:09,566 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:33:09,566 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:33:09,566 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:33:09,566 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:33:09,566 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 10:33:09,566 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 10:33:09,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:33:09,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:33:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:33:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:33:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 10:33:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:33:09,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:33:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:33:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:33:09,569 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:33:09,680 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:33:09,683 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:33:10,182 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:33:10,183 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:33:10,537 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:33:10,538 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:33:10,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:33:10 BoogieIcfgContainer [2024-11-10 10:33:10,538 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:33:10,540 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:33:10,540 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:33:10,544 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:33:10,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:33:09" (1/3) ... [2024-11-10 10:33:10,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ee9e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:33:10, skipping insertion in model container [2024-11-10 10:33:10,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:09" (2/3) ... [2024-11-10 10:33:10,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ee9e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:33:10, skipping insertion in model container [2024-11-10 10:33:10,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:33:10" (3/3) ... [2024-11-10 10:33:10,548 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum.wvr.c [2024-11-10 10:33:10,568 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:33:10,569 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:33:10,569 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:33:10,637 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 10:33:10,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 48 transitions, 117 flow [2024-11-10 10:33:10,710 INFO L124 PetriNetUnfolderBase]: 10/45 cut-off events. [2024-11-10 10:33:10,710 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:33:10,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 10/45 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 57 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-10 10:33:10,715 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 48 transitions, 117 flow [2024-11-10 10:33:10,719 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 44 transitions, 106 flow [2024-11-10 10:33:10,732 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:33:10,739 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;@7d2ccb1f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:33:10,740 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 10:33:10,755 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:33:10,755 INFO L124 PetriNetUnfolderBase]: 10/43 cut-off events. [2024-11-10 10:33:10,755 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:33:10,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:10,757 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] [2024-11-10 10:33:10,757 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 1 more)] === [2024-11-10 10:33:10,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:10,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1650095955, now seen corresponding path program 1 times [2024-11-10 10:33:10,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:10,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849852533] [2024-11-10 10:33:10,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:10,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:11,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:33:11,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:11,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849852533] [2024-11-10 10:33:11,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849852533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:33:11,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:33:11,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:33:11,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129946631] [2024-11-10 10:33:11,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:11,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:33:11,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:11,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:33:11,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:33:11,057 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-10 10:33:11,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 106 flow. Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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) [2024-11-10 10:33:11,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:11,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-10 10:33:11,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:11,279 INFO L124 PetriNetUnfolderBase]: 499/787 cut-off events. [2024-11-10 10:33:11,280 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-11-10 10:33:11,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1581 conditions, 787 events. 499/787 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3437 event pairs, 358 based on Foata normal form. 141/903 useless extension candidates. Maximal degree in co-relation 1352. Up to 721 conditions per place. [2024-11-10 10:33:11,294 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 28 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2024-11-10 10:33:11,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 152 flow [2024-11-10 10:33:11,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:33:11,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:33:11,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 61 transitions. [2024-11-10 10:33:11,307 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2024-11-10 10:33:11,309 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 106 flow. Second operand 2 states and 61 transitions. [2024-11-10 10:33:11,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 152 flow [2024-11-10 10:33:11,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 39 transitions, 140 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-10 10:33:11,315 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 84 flow [2024-11-10 10:33:11,317 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=84, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2024-11-10 10:33:11,322 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-11-10 10:33:11,322 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 84 flow [2024-11-10 10:33:11,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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) [2024-11-10 10:33:11,322 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:11,324 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] [2024-11-10 10:33:11,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:33:11,325 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 1 more)] === [2024-11-10 10:33:11,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:11,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1769778544, now seen corresponding path program 1 times [2024-11-10 10:33:11,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:11,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606081495] [2024-11-10 10:33:11,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:11,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:11,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:33:11,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:11,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606081495] [2024-11-10 10:33:11,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606081495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:33:11,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:33:11,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:33:11,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885408778] [2024-11-10 10:33:11,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:11,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:33:11,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:11,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:33:11,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:33:11,557 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-10 10:33:11,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-11-10 10:33:11,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:11,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-10 10:33:11,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:11,755 INFO L124 PetriNetUnfolderBase]: 818/1355 cut-off events. [2024-11-10 10:33:11,756 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-10 10:33:11,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2570 conditions, 1355 events. 818/1355 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7172 event pairs, 226 based on Foata normal form. 1/1335 useless extension candidates. Maximal degree in co-relation 2567. Up to 803 conditions per place. [2024-11-10 10:33:11,769 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 42 selfloop transitions, 4 changer transitions 1/58 dead transitions. [2024-11-10 10:33:11,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 58 transitions, 221 flow [2024-11-10 10:33:11,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:33:11,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:33:11,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-11-10 10:33:11,773 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-10 10:33:11,773 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 84 flow. Second operand 3 states and 90 transitions. [2024-11-10 10:33:11,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 58 transitions, 221 flow [2024-11-10 10:33:11,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 58 transitions, 221 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:33:11,778 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 110 flow [2024-11-10 10:33:11,778 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2024-11-10 10:33:11,779 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -2 predicate places. [2024-11-10 10:33:11,779 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 110 flow [2024-11-10 10:33:11,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-11-10 10:33:11,780 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:11,780 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:33:11,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:33:11,781 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 1 more)] === [2024-11-10 10:33:11,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:11,782 INFO L85 PathProgramCache]: Analyzing trace with hash 184864565, now seen corresponding path program 1 times [2024-11-10 10:33:11,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:11,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129302840] [2024-11-10 10:33:11,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:11,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:12,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:12,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:12,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129302840] [2024-11-10 10:33:12,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129302840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:33:12,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:33:12,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:33:12,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143413688] [2024-11-10 10:33:12,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:12,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:33:12,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:12,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:33:12,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:33:12,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-11-10 10:33:12,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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) [2024-11-10 10:33:12,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:12,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-11-10 10:33:12,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:12,310 INFO L124 PetriNetUnfolderBase]: 819/1322 cut-off events. [2024-11-10 10:33:12,311 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2024-11-10 10:33:12,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2898 conditions, 1322 events. 819/1322 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6741 event pairs, 577 based on Foata normal form. 1/1279 useless extension candidates. Maximal degree in co-relation 2893. Up to 1183 conditions per place. [2024-11-10 10:33:12,321 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 31 selfloop transitions, 4 changer transitions 4/48 dead transitions. [2024-11-10 10:33:12,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 48 transitions, 200 flow [2024-11-10 10:33:12,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:33:12,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:33:12,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-11-10 10:33:12,324 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-11-10 10:33:12,324 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 110 flow. Second operand 4 states and 86 transitions. [2024-11-10 10:33:12,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 48 transitions, 200 flow [2024-11-10 10:33:12,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 196 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:33:12,327 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 134 flow [2024-11-10 10:33:12,328 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2024-11-10 10:33:12,328 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2024-11-10 10:33:12,329 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 134 flow [2024-11-10 10:33:12,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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) [2024-11-10 10:33:12,329 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:12,329 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:33:12,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:33:12,330 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 1 more)] === [2024-11-10 10:33:12,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:12,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1682430427, now seen corresponding path program 1 times [2024-11-10 10:33:12,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:12,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629622676] [2024-11-10 10:33:12,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:12,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:12,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:33:12,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:12,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629622676] [2024-11-10 10:33:12,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629622676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:33:12,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:33:12,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:33:12,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366395619] [2024-11-10 10:33:12,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:12,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:33:12,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:12,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:33:12,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:33:12,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-10 10:33:12,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-11-10 10:33:12,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:12,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-10 10:33:12,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:12,658 INFO L124 PetriNetUnfolderBase]: 916/1452 cut-off events. [2024-11-10 10:33:12,659 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2024-11-10 10:33:12,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3088 conditions, 1452 events. 916/1452 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7163 event pairs, 332 based on Foata normal form. 0/1395 useless extension candidates. Maximal degree in co-relation 3081. Up to 696 conditions per place. [2024-11-10 10:33:12,669 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 44 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2024-11-10 10:33:12,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 58 transitions, 268 flow [2024-11-10 10:33:12,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:33:12,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:33:12,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-11-10 10:33:12,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-11-10 10:33:12,673 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 134 flow. Second operand 4 states and 94 transitions. [2024-11-10 10:33:12,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 58 transitions, 268 flow [2024-11-10 10:33:12,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 258 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-10 10:33:12,678 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 145 flow [2024-11-10 10:33:12,678 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-11-10 10:33:12,679 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 4 predicate places. [2024-11-10 10:33:12,679 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 145 flow [2024-11-10 10:33:12,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-11-10 10:33:12,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:12,680 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:33:12,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:33:12,680 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 1 more)] === [2024-11-10 10:33:12,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:12,681 INFO L85 PathProgramCache]: Analyzing trace with hash -971180042, now seen corresponding path program 1 times [2024-11-10 10:33:12,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:12,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921113002] [2024-11-10 10:33:12,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:12,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:33:12,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:12,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921113002] [2024-11-10 10:33:12,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921113002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:33:12,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956484028] [2024-11-10 10:33:12,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:12,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:33:12,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:33:12,842 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:33:12,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 10:33:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:12,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:33:12,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:33:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:33:13,060 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:33:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:33:13,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956484028] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:33:13,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:33:13,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-11-10 10:33:13,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920738872] [2024-11-10 10:33:13,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:13,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:33:13,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:13,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:33:13,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:33:13,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-11-10 10:33:13,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 145 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 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) [2024-11-10 10:33:13,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:13,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-11-10 10:33:13,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:13,373 INFO L124 PetriNetUnfolderBase]: 1053/1746 cut-off events. [2024-11-10 10:33:13,374 INFO L125 PetriNetUnfolderBase]: For 788/789 co-relation queries the response was YES. [2024-11-10 10:33:13,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4113 conditions, 1746 events. 1053/1746 cut-off events. For 788/789 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9084 event pairs, 559 based on Foata normal form. 98/1811 useless extension candidates. Maximal degree in co-relation 4105. Up to 1177 conditions per place. [2024-11-10 10:33:13,388 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 51 selfloop transitions, 5 changer transitions 0/64 dead transitions. [2024-11-10 10:33:13,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 64 transitions, 321 flow [2024-11-10 10:33:13,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:33:13,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:33:13,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-11-10 10:33:13,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-11-10 10:33:13,394 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 145 flow. Second operand 5 states and 104 transitions. [2024-11-10 10:33:13,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 64 transitions, 321 flow [2024-11-10 10:33:13,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 64 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 10:33:13,399 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 162 flow [2024-11-10 10:33:13,400 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-11-10 10:33:13,401 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2024-11-10 10:33:13,404 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 162 flow [2024-11-10 10:33:13,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 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) [2024-11-10 10:33:13,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:13,405 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:33:13,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 10:33:13,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:33:13,606 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 1 more)] === [2024-11-10 10:33:13,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:13,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1522477129, now seen corresponding path program 1 times [2024-11-10 10:33:13,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:13,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156139352] [2024-11-10 10:33:13,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:13,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:33:15,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:15,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156139352] [2024-11-10 10:33:15,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156139352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:33:15,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199312609] [2024-11-10 10:33:15,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:15,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:33:15,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:33:15,215 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:33:15,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 10:33:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:15,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-10 10:33:15,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:33:15,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-10 10:33:15,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 10:33:15,550 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 10:33:15,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-10 10:33:15,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 10:33:15,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-10 10:33:15,980 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:33:15,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:33:33,730 INFO L349 Elim1Store]: treesize reduction 28, result has 64.6 percent of original size [2024-11-10 10:33:33,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 1682 treesize of output 1252 [2024-11-10 10:33:33,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:33:33,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 737 treesize of output 693 [2024-11-10 10:33:38,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2024-11-10 10:33:46,236 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:33:46,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199312609] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:33:46,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:33:46,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 32 [2024-11-10 10:33:46,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616297394] [2024-11-10 10:33:46,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:33:46,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-10 10:33:46,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:46,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-10 10:33:46,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=902, Unknown=6, NotChecked=0, Total=1056 [2024-11-10 10:33:50,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 10:33:54,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 10:33:58,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 10:34:02,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 10:34:03,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 10:34:03,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-11-10 10:34:03,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 162 flow. Second operand has 33 states, 33 states have (on average 11.303030303030303) internal successors, (373), 33 states have internal predecessors, (373), 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) [2024-11-10 10:34:03,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:03,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-11-10 10:34:03,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:08,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 10:34:20,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 10:34:23,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.33s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 10:34:27,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 10:34:31,175 INFO L124 PetriNetUnfolderBase]: 3355/5192 cut-off events. [2024-11-10 10:34:31,176 INFO L125 PetriNetUnfolderBase]: For 3925/3925 co-relation queries the response was YES. [2024-11-10 10:34:31,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13362 conditions, 5192 events. 3355/5192 cut-off events. For 3925/3925 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 28676 event pairs, 272 based on Foata normal form. 2/4928 useless extension candidates. Maximal degree in co-relation 13353. Up to 2373 conditions per place. [2024-11-10 10:34:31,270 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 167 selfloop transitions, 49 changer transitions 2/224 dead transitions. [2024-11-10 10:34:31,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 224 transitions, 1155 flow [2024-11-10 10:34:31,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-10 10:34:31,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-10 10:34:31,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 407 transitions. [2024-11-10 10:34:31,273 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4037698412698413 [2024-11-10 10:34:31,273 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 162 flow. Second operand 21 states and 407 transitions. [2024-11-10 10:34:31,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 224 transitions, 1155 flow [2024-11-10 10:34:31,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 224 transitions, 1145 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 10:34:31,281 INFO L231 Difference]: Finished difference. Result has 76 places, 89 transitions, 512 flow [2024-11-10 10:34:31,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=512, PETRI_PLACES=76, PETRI_TRANSITIONS=89} [2024-11-10 10:34:31,282 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 32 predicate places. [2024-11-10 10:34:31,282 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 89 transitions, 512 flow [2024-11-10 10:34:31,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 11.303030303030303) internal successors, (373), 33 states have internal predecessors, (373), 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) [2024-11-10 10:34:31,283 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:31,283 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:34:31,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 10:34:31,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-10 10:34:31,484 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 1 more)] === [2024-11-10 10:34:31,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:31,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1283975425, now seen corresponding path program 2 times [2024-11-10 10:34:31,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:31,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132124567] [2024-11-10 10:34:31,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:31,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:33,281 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:33,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:33,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132124567] [2024-11-10 10:34:33,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132124567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:33,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93750757] [2024-11-10 10:34:33,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:34:33,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:33,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:34:33,284 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:34:33,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 10:34:33,376 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:34:33,377 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:34:33,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-10 10:34:33,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:34:33,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 10:34:34,339 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:34:34,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-11-10 10:34:34,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:34,394 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:34:34,882 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:34:34,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 248 treesize of output 232 [2024-11-10 10:34:35,392 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:34:35,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 267 treesize of output 227 [2024-11-10 10:34:35,414 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:34:35,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 134 [2024-11-10 10:34:35,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:35,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93750757] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:34:35,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:34:35,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 11] total 31 [2024-11-10 10:34:35,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344927934] [2024-11-10 10:34:35,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:34:35,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-10 10:34:35,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:35,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-10 10:34:35,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2024-11-10 10:34:36,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-11-10 10:34:36,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 89 transitions, 512 flow. Second operand has 32 states, 32 states have (on average 12.3125) internal successors, (394), 32 states have internal predecessors, (394), 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) [2024-11-10 10:34:36,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:36,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-11-10 10:34:36,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:40,007 INFO L124 PetriNetUnfolderBase]: 4407/6764 cut-off events. [2024-11-10 10:34:40,008 INFO L125 PetriNetUnfolderBase]: For 8315/8315 co-relation queries the response was YES. [2024-11-10 10:34:40,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20172 conditions, 6764 events. 4407/6764 cut-off events. For 8315/8315 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 39793 event pairs, 839 based on Foata normal form. 2/6741 useless extension candidates. Maximal degree in co-relation 20156. Up to 3832 conditions per place. [2024-11-10 10:34:40,054 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 220 selfloop transitions, 86 changer transitions 2/315 dead transitions. [2024-11-10 10:34:40,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 315 transitions, 2007 flow [2024-11-10 10:34:40,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-10 10:34:40,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-10 10:34:40,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 581 transitions. [2024-11-10 10:34:40,057 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3904569892473118 [2024-11-10 10:34:40,057 INFO L175 Difference]: Start difference. First operand has 76 places, 89 transitions, 512 flow. Second operand 31 states and 581 transitions. [2024-11-10 10:34:40,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 315 transitions, 2007 flow [2024-11-10 10:34:40,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 315 transitions, 1913 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-11-10 10:34:40,076 INFO L231 Difference]: Finished difference. Result has 119 places, 156 transitions, 1192 flow [2024-11-10 10:34:40,077 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1192, PETRI_PLACES=119, PETRI_TRANSITIONS=156} [2024-11-10 10:34:40,077 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 75 predicate places. [2024-11-10 10:34:40,077 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 156 transitions, 1192 flow [2024-11-10 10:34:40,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 12.3125) internal successors, (394), 32 states have internal predecessors, (394), 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) [2024-11-10 10:34:40,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:40,078 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:34:40,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 10:34:40,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:40,279 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:34:40,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:40,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1109973915, now seen corresponding path program 3 times [2024-11-10 10:34:40,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:40,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118171678] [2024-11-10 10:34:40,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:40,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat