./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:36:12,388 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:36:12,460 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:36:12,465 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:36:12,465 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:36:12,497 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:36:12,498 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:36:12,498 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:36:12,499 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:36:12,500 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:36:12,500 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:36:12,500 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:36:12,501 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:36:12,506 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:36:12,506 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:36:12,507 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:36:12,507 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:36:12,507 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:36:12,507 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:36:12,508 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:36:12,508 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:36:12,508 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:36:12,509 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:36:12,509 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:36:12,512 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:36:12,512 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:36:12,512 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:36:12,513 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:36:12,513 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:36:12,513 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:36:12,513 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:36:12,514 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:36:12,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:36:12,514 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:36:12,514 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:36:12,514 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:36:12,515 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:36:12,515 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:36:12,515 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:36:12,516 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:36:12,516 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:36:12,517 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:36:12,517 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e [2024-10-11 14:36:12,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:36:12,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:36:12,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:36:12,797 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:36:12,798 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:36:12,799 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2024-10-11 14:36:14,257 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:36:14,481 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:36:14,481 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2024-10-11 14:36:14,489 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/20b59820a/9f4eb8ae497045a7803d549828525fd5/FLAGb8aa01316 [2024-10-11 14:36:14,503 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/20b59820a/9f4eb8ae497045a7803d549828525fd5 [2024-10-11 14:36:14,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:36:14,507 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:36:14,509 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:36:14,509 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:36:14,513 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:36:14,513 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:36:14" (1/1) ... [2024-10-11 14:36:14,514 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15c3d4fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:14, skipping insertion in model container [2024-10-11 14:36:14,514 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:36:14" (1/1) ... [2024-10-11 14:36:14,536 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:36:14,713 WARN L248 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-three-array-sum.wvr.c[2730,2743] [2024-10-11 14:36:14,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:36:14,729 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:36:14,748 WARN L248 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-three-array-sum.wvr.c[2730,2743] [2024-10-11 14:36:14,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:36:14,767 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:36:14,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:14 WrapperNode [2024-10-11 14:36:14,768 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:36:14,769 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:36:14,769 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:36:14,769 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:36:14,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:14" (1/1) ... [2024-10-11 14:36:14,782 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:14" (1/1) ... [2024-10-11 14:36:14,802 INFO L138 Inliner]: procedures = 25, calls = 29, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 138 [2024-10-11 14:36:14,803 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:36:14,803 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:36:14,804 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:36:14,804 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:36:14,816 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:14" (1/1) ... [2024-10-11 14:36:14,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:14" (1/1) ... [2024-10-11 14:36:14,820 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:14" (1/1) ... [2024-10-11 14:36:14,836 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-10-11 14:36:14,837 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:14" (1/1) ... [2024-10-11 14:36:14,837 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:14" (1/1) ... [2024-10-11 14:36:14,845 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:14" (1/1) ... [2024-10-11 14:36:14,857 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:14" (1/1) ... [2024-10-11 14:36:14,859 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:14" (1/1) ... [2024-10-11 14:36:14,864 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:14" (1/1) ... [2024-10-11 14:36:14,870 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:36:14,871 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:36:14,871 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:36:14,871 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:36:14,872 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:14" (1/1) ... [2024-10-11 14:36:14,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:36:14,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:14,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:36:14,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:36:14,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:36:14,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:36:14,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:36:14,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:36:14,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:36:14,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 14:36:14,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 14:36:14,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:36:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 14:36:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 14:36:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 14:36:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:36:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:36:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 14:36:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:36:14,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:36:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 14:36:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 14:36:14,949 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:36:15,044 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:36:15,046 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:36:15,357 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:36:15,357 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:36:15,646 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:36:15,647 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-11 14:36:15,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:36:15 BoogieIcfgContainer [2024-10-11 14:36:15,648 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:36:15,650 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:36:15,651 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:36:15,655 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:36:15,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:36:14" (1/3) ... [2024-10-11 14:36:15,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d27c72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:36:15, skipping insertion in model container [2024-10-11 14:36:15,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:14" (2/3) ... [2024-10-11 14:36:15,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d27c72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:36:15, skipping insertion in model container [2024-10-11 14:36:15,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:36:15" (3/3) ... [2024-10-11 14:36:15,658 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2024-10-11 14:36:15,672 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:36:15,672 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:36:15,672 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:36:15,723 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 14:36:15,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 39 transitions, 99 flow [2024-10-11 14:36:15,799 INFO L124 PetriNetUnfolderBase]: 7/36 cut-off events. [2024-10-11 14:36:15,800 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:36:15,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 36 events. 7/36 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-10-11 14:36:15,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 39 transitions, 99 flow [2024-10-11 14:36:15,807 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 35 transitions, 88 flow [2024-10-11 14:36:15,819 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:36:15,829 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;@759d661b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:36:15,830 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 14:36:15,846 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:36:15,847 INFO L124 PetriNetUnfolderBase]: 7/34 cut-off events. [2024-10-11 14:36:15,847 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:36:15,848 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:15,848 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] [2024-10-11 14:36:15,849 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)] === [2024-10-11 14:36:15,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:15,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1514226813, now seen corresponding path program 1 times [2024-10-11 14:36:15,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:15,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898112892] [2024-10-11 14:36:15,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:15,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:16,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:16,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:16,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898112892] [2024-10-11 14:36:16,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898112892] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:16,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:16,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:36:16,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037374607] [2024-10-11 14:36:16,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:16,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:36:16,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:16,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:36:16,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:36:16,865 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-10-11 14:36:16,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-10-11 14:36:16,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:16,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-10-11 14:36:16,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:17,124 INFO L124 PetriNetUnfolderBase]: 638/1043 cut-off events. [2024-10-11 14:36:17,124 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2024-10-11 14:36:17,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2000 conditions, 1043 events. 638/1043 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4669 event pairs, 172 based on Foata normal form. 1/905 useless extension candidates. Maximal degree in co-relation 1709. Up to 535 conditions per place. [2024-10-11 14:36:17,138 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 42 selfloop transitions, 3 changer transitions 1/53 dead transitions. [2024-10-11 14:36:17,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 53 transitions, 231 flow [2024-10-11 14:36:17,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:36:17,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:36:17,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-10-11 14:36:17,152 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6581196581196581 [2024-10-11 14:36:17,154 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 88 flow. Second operand 3 states and 77 transitions. [2024-10-11 14:36:17,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 53 transitions, 231 flow [2024-10-11 14:36:17,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 53 transitions, 209 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 14:36:17,167 INFO L231 Difference]: Finished difference. Result has 35 places, 37 transitions, 95 flow [2024-10-11 14:36:17,169 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=35, PETRI_TRANSITIONS=37} [2024-10-11 14:36:17,173 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2024-10-11 14:36:17,173 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 37 transitions, 95 flow [2024-10-11 14:36:17,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-10-11 14:36:17,173 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:17,174 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] [2024-10-11 14:36:17,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:36:17,175 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)] === [2024-10-11 14:36:17,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:17,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1402878651, now seen corresponding path program 1 times [2024-10-11 14:36:17,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:17,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833757976] [2024-10-11 14:36:17,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:17,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:17,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:17,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:17,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833757976] [2024-10-11 14:36:17,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833757976] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:17,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:17,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:36:17,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600284327] [2024-10-11 14:36:17,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:17,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:36:17,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:17,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:36:17,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:36:17,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-10-11 14:36:17,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 37 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-11 14:36:17,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:17,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-10-11 14:36:17,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:17,695 INFO L124 PetriNetUnfolderBase]: 1070/1919 cut-off events. [2024-10-11 14:36:17,695 INFO L125 PetriNetUnfolderBase]: For 238/238 co-relation queries the response was YES. [2024-10-11 14:36:17,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3698 conditions, 1919 events. 1070/1919 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10684 event pairs, 566 based on Foata normal form. 58/1855 useless extension candidates. Maximal degree in co-relation 1545. Up to 815 conditions per place. [2024-10-11 14:36:17,711 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 64 selfloop transitions, 15 changer transitions 0/86 dead transitions. [2024-10-11 14:36:17,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 86 transitions, 371 flow [2024-10-11 14:36:17,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:36:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:36:17,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-10-11 14:36:17,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5811965811965812 [2024-10-11 14:36:17,714 INFO L175 Difference]: Start difference. First operand has 35 places, 37 transitions, 95 flow. Second operand 6 states and 136 transitions. [2024-10-11 14:36:17,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 86 transitions, 371 flow [2024-10-11 14:36:17,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 86 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:36:17,717 INFO L231 Difference]: Finished difference. Result has 43 places, 50 transitions, 196 flow [2024-10-11 14:36:17,717 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=196, PETRI_PLACES=43, PETRI_TRANSITIONS=50} [2024-10-11 14:36:17,717 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2024-10-11 14:36:17,718 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 50 transitions, 196 flow [2024-10-11 14:36:17,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-11 14:36:17,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:17,718 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] [2024-10-11 14:36:17,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:36:17,719 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)] === [2024-10-11 14:36:17,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:17,720 INFO L85 PathProgramCache]: Analyzing trace with hash 680298853, now seen corresponding path program 1 times [2024-10-11 14:36:17,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:17,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595443445] [2024-10-11 14:36:17,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:17,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:17,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:36:17,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:17,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595443445] [2024-10-11 14:36:17,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595443445] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:17,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994988962] [2024-10-11 14:36:17,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:17,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:17,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:17,899 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:17,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:36:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:18,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:36:18,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:18,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:36:18,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:18,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:36:18,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994988962] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:18,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 14:36:18,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-10-11 14:36:18,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338715645] [2024-10-11 14:36:18,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:18,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:36:18,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:18,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:36:18,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:36:18,190 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-10-11 14:36:18,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 50 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-10-11 14:36:18,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:18,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-10-11 14:36:18,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:18,672 INFO L124 PetriNetUnfolderBase]: 2124/3584 cut-off events. [2024-10-11 14:36:18,672 INFO L125 PetriNetUnfolderBase]: For 1808/1808 co-relation queries the response was YES. [2024-10-11 14:36:18,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7970 conditions, 3584 events. 2124/3584 cut-off events. For 1808/1808 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 20538 event pairs, 780 based on Foata normal form. 0/3217 useless extension candidates. Maximal degree in co-relation 3477. Up to 1155 conditions per place. [2024-10-11 14:36:18,694 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 85 selfloop transitions, 10 changer transitions 0/101 dead transitions. [2024-10-11 14:36:18,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 101 transitions, 556 flow [2024-10-11 14:36:18,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:36:18,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:36:18,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-10-11 14:36:18,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5683760683760684 [2024-10-11 14:36:18,698 INFO L175 Difference]: Start difference. First operand has 43 places, 50 transitions, 196 flow. Second operand 6 states and 133 transitions. [2024-10-11 14:36:18,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 101 transitions, 556 flow [2024-10-11 14:36:18,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 101 transitions, 556 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:36:18,703 INFO L231 Difference]: Finished difference. Result has 51 places, 56 transitions, 260 flow [2024-10-11 14:36:18,703 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=51, PETRI_TRANSITIONS=56} [2024-10-11 14:36:18,704 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2024-10-11 14:36:18,704 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 56 transitions, 260 flow [2024-10-11 14:36:18,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-10-11 14:36:18,704 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:18,704 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] [2024-10-11 14:36:18,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 14:36:18,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:18,906 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)] === [2024-10-11 14:36:18,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:18,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1279354192, now seen corresponding path program 1 times [2024-10-11 14:36:18,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:18,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956190851] [2024-10-11 14:36:18,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:18,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:19,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:19,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:19,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956190851] [2024-10-11 14:36:19,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956190851] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:19,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:19,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:36:19,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680493529] [2024-10-11 14:36:19,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:19,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:36:19,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:19,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:36:19,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:36:19,048 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-10-11 14:36:19,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 56 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-10-11 14:36:19,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:19,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-10-11 14:36:19,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:19,395 INFO L124 PetriNetUnfolderBase]: 1372/2233 cut-off events. [2024-10-11 14:36:19,396 INFO L125 PetriNetUnfolderBase]: For 1784/1784 co-relation queries the response was YES. [2024-10-11 14:36:19,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5803 conditions, 2233 events. 1372/2233 cut-off events. For 1784/1784 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10893 event pairs, 793 based on Foata normal form. 2/2086 useless extension candidates. Maximal degree in co-relation 3741. Up to 1248 conditions per place. [2024-10-11 14:36:19,411 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 28 selfloop transitions, 6 changer transitions 37/78 dead transitions. [2024-10-11 14:36:19,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 78 transitions, 458 flow [2024-10-11 14:36:19,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:36:19,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:36:19,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-10-11 14:36:19,415 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2024-10-11 14:36:19,415 INFO L175 Difference]: Start difference. First operand has 51 places, 56 transitions, 260 flow. Second operand 6 states and 120 transitions. [2024-10-11 14:36:19,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 78 transitions, 458 flow [2024-10-11 14:36:19,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 78 transitions, 458 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:36:19,424 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 179 flow [2024-10-11 14:36:19,424 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2024-10-11 14:36:19,425 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2024-10-11 14:36:19,426 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 179 flow [2024-10-11 14:36:19,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-10-11 14:36:19,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:19,427 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] [2024-10-11 14:36:19,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:36:19,427 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)] === [2024-10-11 14:36:19,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:19,428 INFO L85 PathProgramCache]: Analyzing trace with hash -463702353, now seen corresponding path program 1 times [2024-10-11 14:36:19,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:19,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326002747] [2024-10-11 14:36:19,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:19,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:19,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:36:19,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:19,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326002747] [2024-10-11 14:36:19,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326002747] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:19,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206956044] [2024-10-11 14:36:19,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:19,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:19,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:19,572 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:19,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 14:36:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:19,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:36:19,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:19,752 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:36:19,753 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:19,808 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:36:19,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206956044] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:19,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 14:36:19,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-10-11 14:36:19,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177732153] [2024-10-11 14:36:19,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:19,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:36:19,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:19,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:36:19,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:36:19,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-10-11 14:36:19,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-11 14:36:19,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:19,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-10-11 14:36:19,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:20,030 INFO L124 PetriNetUnfolderBase]: 910/1560 cut-off events. [2024-10-11 14:36:20,031 INFO L125 PetriNetUnfolderBase]: For 1135/1135 co-relation queries the response was YES. [2024-10-11 14:36:20,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3929 conditions, 1560 events. 910/1560 cut-off events. For 1135/1135 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7687 event pairs, 290 based on Foata normal form. 72/1536 useless extension candidates. Maximal degree in co-relation 3901. Up to 647 conditions per place. [2024-10-11 14:36:20,043 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 41 selfloop transitions, 5 changer transitions 0/53 dead transitions. [2024-10-11 14:36:20,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 321 flow [2024-10-11 14:36:20,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:36:20,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:36:20,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-10-11 14:36:20,045 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4461538461538462 [2024-10-11 14:36:20,046 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 179 flow. Second operand 5 states and 87 transitions. [2024-10-11 14:36:20,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 321 flow [2024-10-11 14:36:20,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 262 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-10-11 14:36:20,054 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 155 flow [2024-10-11 14:36:20,054 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2024-10-11 14:36:20,055 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 8 predicate places. [2024-10-11 14:36:20,056 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 155 flow [2024-10-11 14:36:20,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-11 14:36:20,056 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:20,057 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:20,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 14:36:20,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:20,261 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)] === [2024-10-11 14:36:20,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:20,261 INFO L85 PathProgramCache]: Analyzing trace with hash -327834966, now seen corresponding path program 1 times [2024-10-11 14:36:20,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:20,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866864752] [2024-10-11 14:36:20,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:20,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 14:36:20,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:20,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866864752] [2024-10-11 14:36:20,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866864752] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:20,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192986467] [2024-10-11 14:36:20,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:20,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:20,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:20,383 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:20,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 14:36:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:20,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:36:20,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:20,530 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 14:36:20,530 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 14:36:20,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192986467] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:20,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 14:36:20,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-10-11 14:36:20,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598370141] [2024-10-11 14:36:20,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:20,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:36:20,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:20,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:36:20,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:36:20,583 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-10-11 14:36:20,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2024-10-11 14:36:20,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:20,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-10-11 14:36:20,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:20,747 INFO L124 PetriNetUnfolderBase]: 686/1207 cut-off events. [2024-10-11 14:36:20,747 INFO L125 PetriNetUnfolderBase]: For 694/694 co-relation queries the response was YES. [2024-10-11 14:36:20,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2942 conditions, 1207 events. 686/1207 cut-off events. For 694/694 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5626 event pairs, 328 based on Foata normal form. 62/1200 useless extension candidates. Maximal degree in co-relation 2900. Up to 708 conditions per place. [2024-10-11 14:36:20,757 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 43 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-10-11 14:36:20,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 307 flow [2024-10-11 14:36:20,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:36:20,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:36:20,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-10-11 14:36:20,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48205128205128206 [2024-10-11 14:36:20,758 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 155 flow. Second operand 5 states and 94 transitions. [2024-10-11 14:36:20,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 307 flow [2024-10-11 14:36:20,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 299 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 14:36:20,761 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 170 flow [2024-10-11 14:36:20,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-10-11 14:36:20,762 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 10 predicate places. [2024-10-11 14:36:20,762 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 170 flow [2024-10-11 14:36:20,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2024-10-11 14:36:20,763 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:20,763 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:20,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 14:36:20,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:20,968 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)] === [2024-10-11 14:36:20,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:20,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1503818552, now seen corresponding path program 1 times [2024-10-11 14:36:20,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:20,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146188679] [2024-10-11 14:36:20,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:20,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:36:22,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:22,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146188679] [2024-10-11 14:36:22,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146188679] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:22,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849937206] [2024-10-11 14:36:22,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:22,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:22,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:22,281 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:22,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 14:36:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:22,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 14:36:22,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:22,690 INFO L349 Elim1Store]: treesize reduction 36, result has 54.4 percent of original size [2024-10-11 14:36:22,691 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 58 [2024-10-11 14:36:23,976 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:36:23,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 107 treesize of output 499 [2024-10-11 14:36:29,899 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:36:29,899 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:46,264 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:36:46,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 83 [2024-10-11 14:36:46,921 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:36:46,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849937206] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:36:46,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:36:46,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 7] total 26 [2024-10-11 14:36:46,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052008255] [2024-10-11 14:36:46,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:36:46,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 14:36:46,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:46,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 14:36:46,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=589, Unknown=3, NotChecked=0, Total=702 [2024-10-11 14:36:50,954 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] [2024-10-11 14:36:54,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 14:36:59,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 14:36:59,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-10-11 14:36:59,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 170 flow. Second operand has 27 states, 27 states have (on average 10.444444444444445) internal successors, (282), 27 states have internal predecessors, (282), 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) [2024-10-11 14:36:59,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:59,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-10-11 14:36:59,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:02,241 INFO L124 PetriNetUnfolderBase]: 2493/3878 cut-off events. [2024-10-11 14:37:02,242 INFO L125 PetriNetUnfolderBase]: For 3708/3724 co-relation queries the response was YES. [2024-10-11 14:37:02,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10639 conditions, 3878 events. 2493/3878 cut-off events. For 3708/3724 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 19130 event pairs, 72 based on Foata normal form. 1/3754 useless extension candidates. Maximal degree in co-relation 10595. Up to 1636 conditions per place. [2024-10-11 14:37:02,273 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 160 selfloop transitions, 47 changer transitions 1/212 dead transitions. [2024-10-11 14:37:02,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 212 transitions, 1207 flow [2024-10-11 14:37:02,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 14:37:02,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 14:37:02,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 323 transitions. [2024-10-11 14:37:02,276 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4601139601139601 [2024-10-11 14:37:02,276 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 170 flow. Second operand 18 states and 323 transitions. [2024-10-11 14:37:02,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 212 transitions, 1207 flow [2024-10-11 14:37:02,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 212 transitions, 1187 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-10-11 14:37:02,283 INFO L231 Difference]: Finished difference. Result has 74 places, 88 transitions, 562 flow [2024-10-11 14:37:02,284 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=562, PETRI_PLACES=74, PETRI_TRANSITIONS=88} [2024-10-11 14:37:02,284 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 36 predicate places. [2024-10-11 14:37:02,285 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 88 transitions, 562 flow [2024-10-11 14:37:02,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.444444444444445) internal successors, (282), 27 states have internal predecessors, (282), 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) [2024-10-11 14:37:02,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:02,285 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:02,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:02,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-11 14:37:02,486 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)] === [2024-10-11 14:37:02,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:02,487 INFO L85 PathProgramCache]: Analyzing trace with hash -100629604, now seen corresponding path program 2 times [2024-10-11 14:37:02,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:02,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106530951] [2024-10-11 14:37:02,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:02,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:03,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:37:03,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:03,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106530951] [2024-10-11 14:37:03,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106530951] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:03,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964877137] [2024-10-11 14:37:03,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:37:03,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:03,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:03,990 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:03,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 14:37:04,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:37:04,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:04,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-10-11 14:37:04,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:04,155 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 [2024-10-11 14:37:04,206 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-10-11 14:37:04,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-10-11 14:37:04,303 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-10-11 14:37:04,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-10-11 14:37:04,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2024-10-11 14:37:05,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15 [2024-10-11 14:37:05,591 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:37:05,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:05,959 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:37:05,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 316 treesize of output 296 [2024-10-11 14:37:05,999 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:37:06,000 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 117 treesize of output 103 [2024-10-11 14:37:07,383 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:37:07,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 379 treesize of output 331 [2024-10-11 14:37:31,353 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-10-11 14:37:31,742 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-10-11 14:37:32,839 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-10-11 14:37:33,164 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-10-11 14:37:37,756 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-10-11 14:37:38,678 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-10-11 14:37:39,934 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts.