./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-more-multiply-verify.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.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 d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 14:41:29,889 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 14:41:29,967 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 14:41:29,971 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 14:41:29,972 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 14:41:29,989 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 14:41:29,990 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 14:41:29,990 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 14:41:29,991 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 14:41:29,991 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 14:41:29,991 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 14:41:29,992 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 14:41:29,992 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 14:41:29,993 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 14:41:29,993 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 14:41:29,993 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 14:41:29,994 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 14:41:29,994 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 14:41:29,995 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 14:41:29,995 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 14:41:29,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 14:41:30,000 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 14:41:30,000 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 14:41:30,000 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 14:41:30,001 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 14:41:30,001 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 14:41:30,001 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 14:41:30,001 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 14:41:30,002 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 14:41:30,002 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 14:41:30,002 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 14:41:30,002 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 14:41:30,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:41:30,003 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 14:41:30,005 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 14:41:30,005 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 14:41:30,006 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 14:41:30,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 14:41:30,006 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 14:41:30,006 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 14:41:30,006 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 14:41:30,007 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 14:41:30,007 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 [2024-10-14 14:41:30,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 14:41:30,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 14:41:30,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 14:41:30,303 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 14:41:30,303 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 14:41:30,304 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-10-14 14:41:31,754 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 14:41:31,950 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 14:41:31,951 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-10-14 14:41:31,960 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/734697c62/44363865585e4aa49f87b559aa6e867b/FLAGa4840a974 [2024-10-14 14:41:31,976 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/734697c62/44363865585e4aa49f87b559aa6e867b [2024-10-14 14:41:31,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 14:41:31,980 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 14:41:31,981 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 14:41:31,982 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 14:41:31,987 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 14:41:31,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:41:31" (1/1) ... [2024-10-14 14:41:31,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@742a8a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:31, skipping insertion in model container [2024-10-14 14:41:31,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:41:31" (1/1) ... [2024-10-14 14:41:32,015 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 14:41:32,188 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-more-multiply-verify.wvr.c[3081,3094] [2024-10-14 14:41:32,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:41:32,212 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 14:41:32,241 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-more-multiply-verify.wvr.c[3081,3094] [2024-10-14 14:41:32,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:41:32,272 INFO L204 MainTranslator]: Completed translation [2024-10-14 14:41:32,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:32 WrapperNode [2024-10-14 14:41:32,273 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 14:41:32,274 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 14:41:32,274 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 14:41:32,274 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 14:41:32,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:32" (1/1) ... [2024-10-14 14:41:32,290 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:32" (1/1) ... [2024-10-14 14:41:32,311 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 171 [2024-10-14 14:41:32,312 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 14:41:32,313 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 14:41:32,313 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 14:41:32,313 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 14:41:32,323 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:32" (1/1) ... [2024-10-14 14:41:32,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:32" (1/1) ... [2024-10-14 14:41:32,326 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:32" (1/1) ... [2024-10-14 14:41:32,341 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-14 14:41:32,342 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:32" (1/1) ... [2024-10-14 14:41:32,342 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:32" (1/1) ... [2024-10-14 14:41:32,347 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:32" (1/1) ... [2024-10-14 14:41:32,351 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:32" (1/1) ... [2024-10-14 14:41:32,353 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:32" (1/1) ... [2024-10-14 14:41:32,354 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:32" (1/1) ... [2024-10-14 14:41:32,357 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 14:41:32,358 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 14:41:32,358 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 14:41:32,358 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 14:41:32,359 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:32" (1/1) ... [2024-10-14 14:41:32,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:41:32,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:41:32,392 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) [2024-10-14 14:41:32,395 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 [2024-10-14 14:41:32,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 14:41:32,448 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 14:41:32,448 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 14:41:32,448 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 14:41:32,449 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 14:41:32,449 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 14:41:32,449 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 14:41:32,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 14:41:32,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 14:41:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 14:41:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 14:41:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 14:41:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 14:41:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 14:41:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 14:41:32,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 14:41:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 14:41:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 14:41:32,453 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 14:41:32,580 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 14:41:32,583 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 14:41:32,955 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 14:41:32,956 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 14:41:33,193 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 14:41:33,195 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-14 14:41:33,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:41:33 BoogieIcfgContainer [2024-10-14 14:41:33,196 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 14:41:33,198 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 14:41:33,200 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 14:41:33,204 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 14:41:33,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:41:31" (1/3) ... [2024-10-14 14:41:33,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bbdaf73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:41:33, skipping insertion in model container [2024-10-14 14:41:33,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:32" (2/3) ... [2024-10-14 14:41:33,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bbdaf73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:41:33, skipping insertion in model container [2024-10-14 14:41:33,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:41:33" (3/3) ... [2024-10-14 14:41:33,207 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-multiply-verify.wvr.c [2024-10-14 14:41:33,223 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 14:41:33,224 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 14:41:33,224 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 14:41:33,281 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-14 14:41:33,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 35 transitions, 91 flow [2024-10-14 14:41:33,354 INFO L124 PetriNetUnfolderBase]: 3/32 cut-off events. [2024-10-14 14:41:33,358 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 14:41:33,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 32 events. 3/32 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 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. [2024-10-14 14:41:33,362 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 35 transitions, 91 flow [2024-10-14 14:41:33,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 31 transitions, 80 flow [2024-10-14 14:41:33,383 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 14:41:33,392 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;@6ebeed3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 14:41:33,393 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-14 14:41:33,406 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 14:41:33,407 INFO L124 PetriNetUnfolderBase]: 3/30 cut-off events. [2024-10-14 14:41:33,408 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 14:41:33,408 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:41:33,408 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:41:33,409 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)] === [2024-10-14 14:41:33,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:41:33,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1962402328, now seen corresponding path program 1 times [2024-10-14 14:41:33,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:41:33,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824960435] [2024-10-14 14:41:33,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:41:33,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:41:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:41:33,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:41:33,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:41:33,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824960435] [2024-10-14 14:41:33,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824960435] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:41:33,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:41:33,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 14:41:33,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334651042] [2024-10-14 14:41:33,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:41:33,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 14:41:33,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:41:33,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 14:41:33,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 14:41:33,843 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-14 14:41:33,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-10-14 14:41:33,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:41:33,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-14 14:41:33,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:41:34,114 INFO L124 PetriNetUnfolderBase]: 350/569 cut-off events. [2024-10-14 14:41:34,115 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-10-14 14:41:34,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1201 conditions, 569 events. 350/569 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2010 event pairs, 118 based on Foata normal form. 15/571 useless extension candidates. Maximal degree in co-relation 1072. Up to 432 conditions per place. [2024-10-14 14:41:34,127 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 35 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-10-14 14:41:34,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 188 flow [2024-10-14 14:41:34,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 14:41:34,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 14:41:34,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-10-14 14:41:34,141 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-10-14 14:41:34,142 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 80 flow. Second operand 3 states and 66 transitions. [2024-10-14 14:41:34,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 188 flow [2024-10-14 14:41:34,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 172 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-14 14:41:34,151 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 87 flow [2024-10-14 14:41:34,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2024-10-14 14:41:34,159 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2024-10-14 14:41:34,160 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 87 flow [2024-10-14 14:41:34,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-10-14 14:41:34,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:41:34,160 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] [2024-10-14 14:41:34,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 14:41:34,161 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)] === [2024-10-14 14:41:34,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:41:34,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1662219836, now seen corresponding path program 2 times [2024-10-14 14:41:34,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:41:34,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24052106] [2024-10-14 14:41:34,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:41:34,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:41:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:41:34,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:41:34,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:41:34,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24052106] [2024-10-14 14:41:34,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24052106] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:41:34,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:41:34,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 14:41:34,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570658142] [2024-10-14 14:41:34,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:41:34,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:41:34,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:41:34,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:41:34,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:41:34,503 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-14 14:41:34,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2024-10-14 14:41:34,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:41:34,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-14 14:41:34,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:41:34,686 INFO L124 PetriNetUnfolderBase]: 420/707 cut-off events. [2024-10-14 14:41:34,686 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2024-10-14 14:41:34,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1541 conditions, 707 events. 420/707 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2726 event pairs, 316 based on Foata normal form. 26/710 useless extension candidates. Maximal degree in co-relation 526. Up to 547 conditions per place. [2024-10-14 14:41:34,696 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 26 selfloop transitions, 2 changer transitions 13/47 dead transitions. [2024-10-14 14:41:34,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 200 flow [2024-10-14 14:41:34,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:41:34,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:41:34,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-10-14 14:41:34,699 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-10-14 14:41:34,699 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 87 flow. Second operand 4 states and 77 transitions. [2024-10-14 14:41:34,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 200 flow [2024-10-14 14:41:34,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 197 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 14:41:34,703 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 100 flow [2024-10-14 14:41:34,703 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-10-14 14:41:34,704 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places. [2024-10-14 14:41:34,704 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 100 flow [2024-10-14 14:41:34,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2024-10-14 14:41:34,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:41:34,706 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] [2024-10-14 14:41:34,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 14:41:34,707 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)] === [2024-10-14 14:41:34,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:41:34,707 INFO L85 PathProgramCache]: Analyzing trace with hash -388477036, now seen corresponding path program 1 times [2024-10-14 14:41:34,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:41:34,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998919416] [2024-10-14 14:41:34,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:41:34,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:41:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:41:34,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:41:34,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:41:34,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998919416] [2024-10-14 14:41:34,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998919416] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:41:34,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:41:34,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 14:41:34,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414264802] [2024-10-14 14:41:34,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:41:34,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:41:34,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:41:34,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:41:34,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:41:34,862 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-14 14:41:34,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-10-14 14:41:34,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:41:34,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-14 14:41:34,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:41:34,986 INFO L124 PetriNetUnfolderBase]: 224/390 cut-off events. [2024-10-14 14:41:34,986 INFO L125 PetriNetUnfolderBase]: For 94/97 co-relation queries the response was YES. [2024-10-14 14:41:34,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 390 events. 224/390 cut-off events. For 94/97 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1296 event pairs, 56 based on Foata normal form. 29/406 useless extension candidates. Maximal degree in co-relation 866. Up to 146 conditions per place. [2024-10-14 14:41:34,990 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 40 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2024-10-14 14:41:34,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 228 flow [2024-10-14 14:41:34,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:41:34,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:41:34,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-10-14 14:41:34,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5785714285714286 [2024-10-14 14:41:34,993 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 100 flow. Second operand 4 states and 81 transitions. [2024-10-14 14:41:34,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 228 flow [2024-10-14 14:41:34,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 51 transitions, 220 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-14 14:41:34,997 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 108 flow [2024-10-14 14:41:34,997 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-10-14 14:41:34,998 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places. [2024-10-14 14:41:34,998 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 108 flow [2024-10-14 14:41:34,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-10-14 14:41:34,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:41:34,999 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] [2024-10-14 14:41:34,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 14:41:34,999 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)] === [2024-10-14 14:41:35,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:41:35,001 INFO L85 PathProgramCache]: Analyzing trace with hash -2031575406, now seen corresponding path program 2 times [2024-10-14 14:41:35,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:41:35,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664612471] [2024-10-14 14:41:35,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:41:35,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:41:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:41:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:41:35,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:41:35,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664612471] [2024-10-14 14:41:35,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664612471] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:41:35,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48247674] [2024-10-14 14:41:35,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 14:41:35,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:41:35,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:41:35,211 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) [2024-10-14 14:41:35,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 14:41:35,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 14:41:35,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:41:35,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 14:41:35,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:41:35,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:41:35,698 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 14:41:35,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48247674] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:41:35,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 14:41:35,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2024-10-14 14:41:35,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739520334] [2024-10-14 14:41:35,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:41:35,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:41:35,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:41:35,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:41:35,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-10-14 14:41:35,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-14 14:41:35,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 108 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-10-14 14:41:35,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:41:35,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-14 14:41:35,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:41:36,162 INFO L124 PetriNetUnfolderBase]: 548/925 cut-off events. [2024-10-14 14:41:36,163 INFO L125 PetriNetUnfolderBase]: For 415/415 co-relation queries the response was YES. [2024-10-14 14:41:36,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2179 conditions, 925 events. 548/925 cut-off events. For 415/415 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4205 event pairs, 131 based on Foata normal form. 1/923 useless extension candidates. Maximal degree in co-relation 2160. Up to 341 conditions per place. [2024-10-14 14:41:36,170 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 62 selfloop transitions, 14 changer transitions 17/97 dead transitions. [2024-10-14 14:41:36,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 97 transitions, 467 flow [2024-10-14 14:41:36,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 14:41:36,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 14:41:36,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-10-14 14:41:36,172 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5321428571428571 [2024-10-14 14:41:36,173 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 108 flow. Second operand 8 states and 149 transitions. [2024-10-14 14:41:36,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 97 transitions, 467 flow [2024-10-14 14:41:36,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 97 transitions, 447 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-14 14:41:36,177 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 207 flow [2024-10-14 14:41:36,178 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=207, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-10-14 14:41:36,178 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2024-10-14 14:41:36,179 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 207 flow [2024-10-14 14:41:36,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-10-14 14:41:36,179 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:41:36,179 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] [2024-10-14 14:41:36,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 14:41:36,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:41:36,381 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)] === [2024-10-14 14:41:36,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:41:36,381 INFO L85 PathProgramCache]: Analyzing trace with hash 476846050, now seen corresponding path program 3 times [2024-10-14 14:41:36,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:41:36,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594002940] [2024-10-14 14:41:36,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:41:36,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:41:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:41:36,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:41:36,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:41:36,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594002940] [2024-10-14 14:41:36,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594002940] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:41:36,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701043762] [2024-10-14 14:41:36,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 14:41:36,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:41:36,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:41:36,531 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) [2024-10-14 14:41:36,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 14:41:36,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-14 14:41:36,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:41:36,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 14:41:36,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:41:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:41:36,863 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 14:41:36,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701043762] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:41:36,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 14:41:36,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2024-10-14 14:41:36,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746368260] [2024-10-14 14:41:36,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:41:36,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:41:36,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:41:36,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:41:36,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-10-14 14:41:36,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-14 14:41:36,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 207 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-10-14 14:41:36,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:41:36,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-14 14:41:36,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:41:37,253 INFO L124 PetriNetUnfolderBase]: 742/1251 cut-off events. [2024-10-14 14:41:37,253 INFO L125 PetriNetUnfolderBase]: For 1228/1233 co-relation queries the response was YES. [2024-10-14 14:41:37,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3595 conditions, 1251 events. 742/1251 cut-off events. For 1228/1233 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6093 event pairs, 185 based on Foata normal form. 6/1255 useless extension candidates. Maximal degree in co-relation 3579. Up to 405 conditions per place. [2024-10-14 14:41:37,262 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 64 selfloop transitions, 21 changer transitions 17/106 dead transitions. [2024-10-14 14:41:37,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 106 transitions, 627 flow [2024-10-14 14:41:37,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 14:41:37,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 14:41:37,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-10-14 14:41:37,264 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-10-14 14:41:37,264 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 207 flow. Second operand 8 states and 148 transitions. [2024-10-14 14:41:37,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 106 transitions, 627 flow [2024-10-14 14:41:37,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 106 transitions, 599 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-10-14 14:41:37,273 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 355 flow [2024-10-14 14:41:37,273 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=355, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2024-10-14 14:41:37,276 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2024-10-14 14:41:37,276 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 355 flow [2024-10-14 14:41:37,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-10-14 14:41:37,276 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:41:37,276 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] [2024-10-14 14:41:37,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 14:41:37,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:41:37,477 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)] === [2024-10-14 14:41:37,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:41:37,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1592852712, now seen corresponding path program 4 times [2024-10-14 14:41:37,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:41:37,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99148078] [2024-10-14 14:41:37,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:41:37,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:41:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:41:37,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:41:37,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:41:37,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99148078] [2024-10-14 14:41:37,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99148078] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:41:37,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955521191] [2024-10-14 14:41:37,636 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 14:41:37,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:41:37,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:41:37,639 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) [2024-10-14 14:41:37,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 14:41:37,727 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 14:41:37,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:41:37,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 14:41:37,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:41:37,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:41:37,794 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:41:37,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:41:37,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955521191] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:41:37,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:41:37,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-10-14 14:41:37,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197360786] [2024-10-14 14:41:37,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:41:37,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 14:41:37,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:41:37,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 14:41:37,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-10-14 14:41:37,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-14 14:41:37,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 355 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2024-10-14 14:41:37,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:41:37,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-14 14:41:37,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:41:38,187 INFO L124 PetriNetUnfolderBase]: 1071/1882 cut-off events. [2024-10-14 14:41:38,187 INFO L125 PetriNetUnfolderBase]: For 2867/2875 co-relation queries the response was YES. [2024-10-14 14:41:38,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5843 conditions, 1882 events. 1071/1882 cut-off events. For 2867/2875 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 10720 event pairs, 580 based on Foata normal form. 37/1887 useless extension candidates. Maximal degree in co-relation 5823. Up to 868 conditions per place. [2024-10-14 14:41:38,202 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 40 selfloop transitions, 3 changer transitions 39/97 dead transitions. [2024-10-14 14:41:38,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 97 transitions, 731 flow [2024-10-14 14:41:38,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:41:38,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 14:41:38,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-10-14 14:41:38,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-10-14 14:41:38,204 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 355 flow. Second operand 6 states and 112 transitions. [2024-10-14 14:41:38,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 97 transitions, 731 flow [2024-10-14 14:41:38,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 97 transitions, 719 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-10-14 14:41:38,218 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 387 flow [2024-10-14 14:41:38,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=387, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-10-14 14:41:38,220 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 24 predicate places. [2024-10-14 14:41:38,221 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 387 flow [2024-10-14 14:41:38,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2024-10-14 14:41:38,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:41:38,221 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] [2024-10-14 14:41:38,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 14:41:38,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:41:38,426 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)] === [2024-10-14 14:41:38,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:41:38,426 INFO L85 PathProgramCache]: Analyzing trace with hash -952130302, now seen corresponding path program 5 times [2024-10-14 14:41:38,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:41:38,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664310494] [2024-10-14 14:41:38,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:41:38,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:41:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:41:40,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:41:40,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:41:40,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664310494] [2024-10-14 14:41:40,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664310494] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:41:40,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268504403] [2024-10-14 14:41:40,098 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 14:41:40,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:41:40,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:41:40,100 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:41:40,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 14:41:40,190 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 14:41:40,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:41:40,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-14 14:41:40,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:41:40,291 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 [2024-10-14 14:41:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:41:40,771 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:41:41,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 82 treesize of output 74 [2024-10-14 14:41:41,763 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-10-14 14:41:41,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 141 treesize of output 125 [2024-10-14 14:41:42,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:41:42,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268504403] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:41:42,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:41:42,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2024-10-14 14:41:42,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882493167] [2024-10-14 14:41:42,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:41:42,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-14 14:41:42,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:41:42,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-14 14:41:42,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2024-10-14 14:41:42,205 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-14 14:41:42,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 387 flow. Second operand has 32 states, 32 states have (on average 9.25) internal successors, (296), 32 states have internal predecessors, (296), 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) [2024-10-14 14:41:42,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:41:42,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-14 14:41:42,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:41:45,413 INFO L124 PetriNetUnfolderBase]: 2694/4528 cut-off events. [2024-10-14 14:41:45,414 INFO L125 PetriNetUnfolderBase]: For 9430/9435 co-relation queries the response was YES. [2024-10-14 14:41:45,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15044 conditions, 4528 events. 2694/4528 cut-off events. For 9430/9435 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 28393 event pairs, 793 based on Foata normal form. 6/4525 useless extension candidates. Maximal degree in co-relation 15012. Up to 1243 conditions per place. [2024-10-14 14:41:45,455 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 218 selfloop transitions, 68 changer transitions 44/334 dead transitions. [2024-10-14 14:41:45,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 334 transitions, 2421 flow [2024-10-14 14:41:45,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-14 14:41:45,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-14 14:41:45,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 459 transitions. [2024-10-14 14:41:45,459 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4683673469387755 [2024-10-14 14:41:45,459 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 387 flow. Second operand 28 states and 459 transitions. [2024-10-14 14:41:45,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 334 transitions, 2421 flow [2024-10-14 14:41:45,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 334 transitions, 2303 flow, removed 57 selfloop flow, removed 4 redundant places. [2024-10-14 14:41:45,596 INFO L231 Difference]: Finished difference. Result has 94 places, 124 transitions, 1187 flow [2024-10-14 14:41:45,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1187, PETRI_PLACES=94, PETRI_TRANSITIONS=124} [2024-10-14 14:41:45,597 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 56 predicate places. [2024-10-14 14:41:45,597 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 124 transitions, 1187 flow [2024-10-14 14:41:45,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.25) internal successors, (296), 32 states have internal predecessors, (296), 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) [2024-10-14 14:41:45,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:41:45,598 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] [2024-10-14 14:41:45,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-14 14:41:45,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:41:45,803 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)] === [2024-10-14 14:41:45,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:41:45,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1986714814, now seen corresponding path program 6 times [2024-10-14 14:41:45,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:41:45,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890333940] [2024-10-14 14:41:45,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:41:45,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:41:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:41:47,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:41:47,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:41:47,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890333940] [2024-10-14 14:41:47,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890333940] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:41:47,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855808100] [2024-10-14 14:41:47,440 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 14:41:47,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:41:47,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:41:47,443 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:41:47,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 14:41:47,537 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-10-14 14:41:47,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:41:47,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 14:41:47,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:41:47,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:41:47,762 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 14:41:47,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855808100] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:41:47,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 14:41:47,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2024-10-14 14:41:47,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353070467] [2024-10-14 14:41:47,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:41:47,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:41:47,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:41:47,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:41:47,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-10-14 14:41:47,772 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-14 14:41:47,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 124 transitions, 1187 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-10-14 14:41:47,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:41:47,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-14 14:41:47,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:41:48,444 INFO L124 PetriNetUnfolderBase]: 2759/4668 cut-off events. [2024-10-14 14:41:48,445 INFO L125 PetriNetUnfolderBase]: For 13104/13109 co-relation queries the response was YES. [2024-10-14 14:41:48,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16461 conditions, 4668 events. 2759/4668 cut-off events. For 13104/13109 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 29734 event pairs, 704 based on Foata normal form. 6/4662 useless extension candidates. Maximal degree in co-relation 16414. Up to 1450 conditions per place. [2024-10-14 14:41:48,562 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 90 selfloop transitions, 68 changer transitions 18/180 dead transitions. [2024-10-14 14:41:48,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 180 transitions, 1741 flow [2024-10-14 14:41:48,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 14:41:48,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 14:41:48,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-10-14 14:41:48,564 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-10-14 14:41:48,564 INFO L175 Difference]: Start difference. First operand has 94 places, 124 transitions, 1187 flow. Second operand 8 states and 152 transitions. [2024-10-14 14:41:48,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 180 transitions, 1741 flow [2024-10-14 14:41:48,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 180 transitions, 1639 flow, removed 47 selfloop flow, removed 10 redundant places. [2024-10-14 14:41:48,640 INFO L231 Difference]: Finished difference. Result has 88 places, 126 transitions, 1283 flow [2024-10-14 14:41:48,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1097, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1283, PETRI_PLACES=88, PETRI_TRANSITIONS=126} [2024-10-14 14:41:48,641 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 50 predicate places. [2024-10-14 14:41:48,641 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 126 transitions, 1283 flow [2024-10-14 14:41:48,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-10-14 14:41:48,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:41:48,642 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] [2024-10-14 14:41:48,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 14:41:48,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:41:48,846 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:41:48,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:41:48,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1632198074, now seen corresponding path program 7 times [2024-10-14 14:41:48,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:41:48,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590429237] [2024-10-14 14:41:48,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:41:48,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:41:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:41:50,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:41:50,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:41:50,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590429237] [2024-10-14 14:41:50,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590429237] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:41:50,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342990493] [2024-10-14 14:41:50,385 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 14:41:50,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:41:50,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:41:50,387 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:41:50,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 14:41:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:41:50,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-14 14:41:50,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:41:50,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:41:50,968 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:41:51,246 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 14:41:51,246 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 58 treesize of output 60 [2024-10-14 14:41:51,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:41:51,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342990493] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:41:51,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:41:51,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2024-10-14 14:41:51,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332326637] [2024-10-14 14:41:51,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:41:51,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-14 14:41:51,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:41:51,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-14 14:41:51,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=842, Unknown=0, NotChecked=0, Total=992 [2024-10-14 14:41:52,024 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-14 14:41:52,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 126 transitions, 1283 flow. Second operand has 32 states, 32 states have (on average 9.25) internal successors, (296), 32 states have internal predecessors, (296), 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) [2024-10-14 14:41:52,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:41:52,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-14 14:41:52,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:41:54,852 INFO L124 PetriNetUnfolderBase]: 3173/5491 cut-off events. [2024-10-14 14:41:54,853 INFO L125 PetriNetUnfolderBase]: For 19793/19827 co-relation queries the response was YES. [2024-10-14 14:41:54,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19504 conditions, 5491 events. 3173/5491 cut-off events. For 19793/19827 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 36755 event pairs, 722 based on Foata normal form. 36/5524 useless extension candidates. Maximal degree in co-relation 19453. Up to 1020 conditions per place. [2024-10-14 14:41:54,893 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 157 selfloop transitions, 91 changer transitions 44/296 dead transitions. [2024-10-14 14:41:54,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 296 transitions, 2545 flow [2024-10-14 14:41:54,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-14 14:41:54,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-14 14:41:54,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 377 transitions. [2024-10-14 14:41:54,895 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4683229813664596 [2024-10-14 14:41:54,895 INFO L175 Difference]: Start difference. First operand has 88 places, 126 transitions, 1283 flow. Second operand 23 states and 377 transitions. [2024-10-14 14:41:54,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 296 transitions, 2545 flow [2024-10-14 14:41:54,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 296 transitions, 2408 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-10-14 14:41:54,982 INFO L231 Difference]: Finished difference. Result has 113 places, 147 transitions, 1668 flow [2024-10-14 14:41:54,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1668, PETRI_PLACES=113, PETRI_TRANSITIONS=147} [2024-10-14 14:41:54,983 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 75 predicate places. [2024-10-14 14:41:54,985 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 147 transitions, 1668 flow [2024-10-14 14:41:54,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.25) internal successors, (296), 32 states have internal predecessors, (296), 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) [2024-10-14 14:41:54,986 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:41:54,986 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] [2024-10-14 14:41:55,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 14:41:55,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:41:55,187 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:41:55,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:41:55,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1194065612, now seen corresponding path program 8 times [2024-10-14 14:41:55,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:41:55,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871148775] [2024-10-14 14:41:55,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:41:55,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:41:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:41:56,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:41:56,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:41:56,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871148775] [2024-10-14 14:41:56,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871148775] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:41:56,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027300386] [2024-10-14 14:41:56,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 14:41:56,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:41:56,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:41:56,492 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:41:56,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 14:41:56,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 14:41:56,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:41:56,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 14:41:56,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:41:56,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:41:56,765 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 14:41:56,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027300386] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:41:56,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 14:41:56,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2024-10-14 14:41:56,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301709028] [2024-10-14 14:41:56,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:41:56,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:41:56,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:41:56,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:41:56,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-10-14 14:41:56,774 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-14 14:41:56,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 147 transitions, 1668 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-10-14 14:41:56,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:41:56,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-14 14:41:56,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:41:57,443 INFO L124 PetriNetUnfolderBase]: 3213/5541 cut-off events. [2024-10-14 14:41:57,444 INFO L125 PetriNetUnfolderBase]: For 26806/26837 co-relation queries the response was YES. [2024-10-14 14:41:57,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21219 conditions, 5541 events. 3213/5541 cut-off events. For 26806/26837 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 36681 event pairs, 1005 based on Foata normal form. 25/5563 useless extension candidates. Maximal degree in co-relation 21152. Up to 2354 conditions per place. [2024-10-14 14:41:57,486 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 115 selfloop transitions, 60 changer transitions 18/197 dead transitions. [2024-10-14 14:41:57,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 197 transitions, 2270 flow [2024-10-14 14:41:57,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 14:41:57,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 14:41:57,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-10-14 14:41:57,488 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5035714285714286 [2024-10-14 14:41:57,488 INFO L175 Difference]: Start difference. First operand has 113 places, 147 transitions, 1668 flow. Second operand 8 states and 141 transitions. [2024-10-14 14:41:57,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 197 transitions, 2270 flow [2024-10-14 14:41:57,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 197 transitions, 2177 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-10-14 14:41:57,682 INFO L231 Difference]: Finished difference. Result has 108 places, 150 transitions, 1765 flow [2024-10-14 14:41:57,683 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1583, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1765, PETRI_PLACES=108, PETRI_TRANSITIONS=150} [2024-10-14 14:41:57,683 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 70 predicate places. [2024-10-14 14:41:57,683 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 150 transitions, 1765 flow [2024-10-14 14:41:57,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-10-14 14:41:57,683 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:41:57,684 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] [2024-10-14 14:41:57,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-14 14:41:57,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:41:57,885 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:41:57,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:41:57,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1646784127, now seen corresponding path program 1 times [2024-10-14 14:41:57,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:41:57,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557184160] [2024-10-14 14:41:57,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:41:57,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:41:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:41:57,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:41:57,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:41:57,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557184160] [2024-10-14 14:41:57,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557184160] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:41:57,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79758182] [2024-10-14 14:41:57,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:41:57,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:41:57,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:41:57,986 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:41:57,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 14:41:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:41:58,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 14:41:58,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:41:58,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:41:58,099 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:41:58,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:41:58,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79758182] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 14:41:58,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 14:41:58,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2024-10-14 14:41:58,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244827278] [2024-10-14 14:41:58,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:41:58,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:41:58,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:41:58,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:41:58,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-14 14:41:58,141 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-14 14:41:58,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 150 transitions, 1765 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-10-14 14:41:58,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:41:58,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-14 14:41:58,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:41:58,776 INFO L124 PetriNetUnfolderBase]: 4335/7133 cut-off events. [2024-10-14 14:41:58,776 INFO L125 PetriNetUnfolderBase]: For 36540/36548 co-relation queries the response was YES. [2024-10-14 14:41:58,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26239 conditions, 7133 events. 4335/7133 cut-off events. For 36540/36548 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 45682 event pairs, 990 based on Foata normal form. 4/6245 useless extension candidates. Maximal degree in co-relation 26177. Up to 3306 conditions per place. [2024-10-14 14:41:58,830 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 181 selfloop transitions, 10 changer transitions 0/230 dead transitions. [2024-10-14 14:41:58,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 230 transitions, 3139 flow [2024-10-14 14:41:58,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:41:58,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:41:58,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-10-14 14:41:58,832 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-10-14 14:41:58,832 INFO L175 Difference]: Start difference. First operand has 108 places, 150 transitions, 1765 flow. Second operand 4 states and 88 transitions. [2024-10-14 14:41:58,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 230 transitions, 3139 flow [2024-10-14 14:41:59,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 230 transitions, 2955 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-10-14 14:41:59,039 INFO L231 Difference]: Finished difference. Result has 107 places, 157 transitions, 1761 flow [2024-10-14 14:41:59,040 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1761, PETRI_PLACES=107, PETRI_TRANSITIONS=157} [2024-10-14 14:41:59,040 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 69 predicate places. [2024-10-14 14:41:59,040 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 157 transitions, 1761 flow [2024-10-14 14:41:59,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-10-14 14:41:59,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:41:59,040 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] [2024-10-14 14:41:59,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 14:41:59,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-14 14:41:59,241 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:41:59,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:41:59,242 INFO L85 PathProgramCache]: Analyzing trace with hash -853554891, now seen corresponding path program 2 times [2024-10-14 14:41:59,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:41:59,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457719029] [2024-10-14 14:41:59,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:41:59,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:41:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:41:59,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:41:59,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:41:59,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457719029] [2024-10-14 14:41:59,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457719029] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:41:59,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:41:59,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:41:59,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625609945] [2024-10-14 14:41:59,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:41:59,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:41:59,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:41:59,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:41:59,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:41:59,339 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-14 14:41:59,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 157 transitions, 1761 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:41:59,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:41:59,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-14 14:41:59,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:42:00,124 INFO L124 PetriNetUnfolderBase]: 4500/7610 cut-off events. [2024-10-14 14:42:00,125 INFO L125 PetriNetUnfolderBase]: For 34196/34219 co-relation queries the response was YES. [2024-10-14 14:42:00,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29003 conditions, 7610 events. 4500/7610 cut-off events. For 34196/34219 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 51899 event pairs, 2306 based on Foata normal form. 51/7568 useless extension candidates. Maximal degree in co-relation 28218. Up to 5467 conditions per place. [2024-10-14 14:42:00,177 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 145 selfloop transitions, 23 changer transitions 9/216 dead transitions. [2024-10-14 14:42:00,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 216 transitions, 2679 flow [2024-10-14 14:42:00,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:42:00,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:42:00,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-10-14 14:42:00,178 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5314285714285715 [2024-10-14 14:42:00,178 INFO L175 Difference]: Start difference. First operand has 107 places, 157 transitions, 1761 flow. Second operand 5 states and 93 transitions. [2024-10-14 14:42:00,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 216 transitions, 2679 flow [2024-10-14 14:42:00,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 216 transitions, 2679 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 14:42:00,459 INFO L231 Difference]: Finished difference. Result has 114 places, 168 transitions, 1932 flow [2024-10-14 14:42:00,460 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1761, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1932, PETRI_PLACES=114, PETRI_TRANSITIONS=168} [2024-10-14 14:42:00,461 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 76 predicate places. [2024-10-14 14:42:00,462 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 168 transitions, 1932 flow [2024-10-14 14:42:00,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:42:00,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:42:00,462 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] [2024-10-14 14:42:00,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 14:42:00,463 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:42:00,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:42:00,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1342553636, now seen corresponding path program 1 times [2024-10-14 14:42:00,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:42:00,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797444852] [2024-10-14 14:42:00,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:42:00,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:42:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:42:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:42:00,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:42:00,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797444852] [2024-10-14 14:42:00,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797444852] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:42:00,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:42:00,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:42:00,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913499814] [2024-10-14 14:42:00,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:42:00,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:42:00,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:42:00,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:42:00,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:42:00,568 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-14 14:42:00,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 168 transitions, 1932 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:42:00,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:42:00,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-14 14:42:00,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:42:01,430 INFO L124 PetriNetUnfolderBase]: 4615/7974 cut-off events. [2024-10-14 14:42:01,430 INFO L125 PetriNetUnfolderBase]: For 43027/43053 co-relation queries the response was YES. [2024-10-14 14:42:01,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33482 conditions, 7974 events. 4615/7974 cut-off events. For 43027/43053 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 55860 event pairs, 2041 based on Foata normal form. 140/8033 useless extension candidates. Maximal degree in co-relation 32408. Up to 4916 conditions per place. [2024-10-14 14:42:01,477 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 154 selfloop transitions, 35 changer transitions 13/239 dead transitions. [2024-10-14 14:42:01,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 239 transitions, 3166 flow [2024-10-14 14:42:01,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:42:01,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:42:01,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-10-14 14:42:01,478 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5371428571428571 [2024-10-14 14:42:01,478 INFO L175 Difference]: Start difference. First operand has 114 places, 168 transitions, 1932 flow. Second operand 5 states and 94 transitions. [2024-10-14 14:42:01,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 239 transitions, 3166 flow [2024-10-14 14:42:01,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 239 transitions, 3150 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-10-14 14:42:01,735 INFO L231 Difference]: Finished difference. Result has 121 places, 173 transitions, 2085 flow [2024-10-14 14:42:01,735 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1860, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2085, PETRI_PLACES=121, PETRI_TRANSITIONS=173} [2024-10-14 14:42:01,736 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 83 predicate places. [2024-10-14 14:42:01,736 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 173 transitions, 2085 flow [2024-10-14 14:42:01,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:42:01,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:42:01,736 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] [2024-10-14 14:42:01,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 14:42:01,736 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:42:01,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:42:01,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1265601632, now seen corresponding path program 2 times [2024-10-14 14:42:01,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:42:01,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569078542] [2024-10-14 14:42:01,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:42:01,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:42:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:42:01,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:42:01,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:42:01,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569078542] [2024-10-14 14:42:01,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569078542] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:42:01,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:42:01,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 14:42:01,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037862979] [2024-10-14 14:42:01,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:42:01,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:42:01,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:42:01,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:42:01,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:42:01,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-14 14:42:01,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 173 transitions, 2085 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-10-14 14:42:01,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:42:01,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-14 14:42:01,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:42:02,827 INFO L124 PetriNetUnfolderBase]: 4819/8308 cut-off events. [2024-10-14 14:42:02,827 INFO L125 PetriNetUnfolderBase]: For 50015/50061 co-relation queries the response was YES. [2024-10-14 14:42:02,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38212 conditions, 8308 events. 4819/8308 cut-off events. For 50015/50061 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 58487 event pairs, 750 based on Foata normal form. 93/8343 useless extension candidates. Maximal degree in co-relation 36772. Up to 3891 conditions per place. [2024-10-14 14:42:02,886 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 191 selfloop transitions, 40 changer transitions 8/276 dead transitions. [2024-10-14 14:42:02,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 276 transitions, 3730 flow [2024-10-14 14:42:02,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 14:42:02,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 14:42:02,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-10-14 14:42:02,888 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-10-14 14:42:02,888 INFO L175 Difference]: Start difference. First operand has 121 places, 173 transitions, 2085 flow. Second operand 7 states and 135 transitions. [2024-10-14 14:42:02,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 276 transitions, 3730 flow [2024-10-14 14:42:03,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 276 transitions, 3714 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-10-14 14:42:03,125 INFO L231 Difference]: Finished difference. Result has 127 places, 178 transitions, 2252 flow [2024-10-14 14:42:03,125 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2069, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2252, PETRI_PLACES=127, PETRI_TRANSITIONS=178} [2024-10-14 14:42:03,126 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 89 predicate places. [2024-10-14 14:42:03,126 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 178 transitions, 2252 flow [2024-10-14 14:42:03,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-10-14 14:42:03,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:42:03,126 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] [2024-10-14 14:42:03,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 14:42:03,126 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:42:03,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:42:03,127 INFO L85 PathProgramCache]: Analyzing trace with hash 747233996, now seen corresponding path program 3 times [2024-10-14 14:42:03,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:42:03,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108944710] [2024-10-14 14:42:03,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:42:03,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:42:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:42:03,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:42:03,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:42:03,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108944710] [2024-10-14 14:42:03,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108944710] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:42:03,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:42:03,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:42:03,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323581564] [2024-10-14 14:42:03,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:42:03,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:42:03,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:42:03,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:42:03,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:42:03,226 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-14 14:42:03,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 178 transitions, 2252 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:42:03,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:42:03,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-14 14:42:03,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:42:04,013 INFO L124 PetriNetUnfolderBase]: 4762/8282 cut-off events. [2024-10-14 14:42:04,013 INFO L125 PetriNetUnfolderBase]: For 59696/59801 co-relation queries the response was YES. [2024-10-14 14:42:04,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39266 conditions, 8282 events. 4762/8282 cut-off events. For 59696/59801 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 59072 event pairs, 1548 based on Foata normal form. 321/8473 useless extension candidates. Maximal degree in co-relation 38574. Up to 3540 conditions per place. [2024-10-14 14:42:04,071 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 156 selfloop transitions, 30 changer transitions 15/235 dead transitions. [2024-10-14 14:42:04,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 235 transitions, 3185 flow [2024-10-14 14:42:04,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:42:04,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:42:04,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-10-14 14:42:04,072 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5885714285714285 [2024-10-14 14:42:04,072 INFO L175 Difference]: Start difference. First operand has 127 places, 178 transitions, 2252 flow. Second operand 5 states and 103 transitions. [2024-10-14 14:42:04,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 235 transitions, 3185 flow [2024-10-14 14:42:04,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 235 transitions, 3091 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-10-14 14:42:04,462 INFO L231 Difference]: Finished difference. Result has 129 places, 171 transitions, 2153 flow [2024-10-14 14:42:04,463 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2147, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2153, PETRI_PLACES=129, PETRI_TRANSITIONS=171} [2024-10-14 14:42:04,463 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 91 predicate places. [2024-10-14 14:42:04,463 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 171 transitions, 2153 flow [2024-10-14 14:42:04,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:42:04,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:42:04,464 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] [2024-10-14 14:42:04,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 14:42:04,464 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:42:04,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:42:04,464 INFO L85 PathProgramCache]: Analyzing trace with hash 2008831494, now seen corresponding path program 4 times [2024-10-14 14:42:04,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:42:04,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243771678] [2024-10-14 14:42:04,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:42:04,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:42:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:42:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:42:04,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:42:04,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243771678] [2024-10-14 14:42:04,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243771678] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:42:04,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378025272] [2024-10-14 14:42:04,560 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 14:42:04,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:42:04,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:42:04,563 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:42:04,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 14:42:04,648 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 14:42:04,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:42:04,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 14:42:04,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:42:04,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:42:04,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:42:04,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:42:04,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378025272] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:42:04,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:42:04,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-10-14 14:42:04,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309142870] [2024-10-14 14:42:04,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:42:04,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 14:42:04,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:42:04,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 14:42:04,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-10-14 14:42:04,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-14 14:42:04,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 171 transitions, 2153 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 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) [2024-10-14 14:42:04,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:42:04,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-14 14:42:04,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:42:05,545 INFO L124 PetriNetUnfolderBase]: 3981/6947 cut-off events. [2024-10-14 14:42:05,545 INFO L125 PetriNetUnfolderBase]: For 48580/48608 co-relation queries the response was YES. [2024-10-14 14:42:05,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33477 conditions, 6947 events. 3981/6947 cut-off events. For 48580/48608 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 48594 event pairs, 1324 based on Foata normal form. 124/6995 useless extension candidates. Maximal degree in co-relation 33097. Up to 3599 conditions per place. [2024-10-14 14:42:05,595 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 150 selfloop transitions, 44 changer transitions 16/241 dead transitions. [2024-10-14 14:42:05,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 241 transitions, 3254 flow [2024-10-14 14:42:05,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 14:42:05,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 14:42:05,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-10-14 14:42:05,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-10-14 14:42:05,597 INFO L175 Difference]: Start difference. First operand has 129 places, 171 transitions, 2153 flow. Second operand 7 states and 128 transitions. [2024-10-14 14:42:05,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 241 transitions, 3254 flow [2024-10-14 14:42:05,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 241 transitions, 3138 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-10-14 14:42:05,866 INFO L231 Difference]: Finished difference. Result has 128 places, 158 transitions, 1981 flow [2024-10-14 14:42:05,866 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1984, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1981, PETRI_PLACES=128, PETRI_TRANSITIONS=158} [2024-10-14 14:42:05,866 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 90 predicate places. [2024-10-14 14:42:05,867 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 158 transitions, 1981 flow [2024-10-14 14:42:05,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 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) [2024-10-14 14:42:05,867 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:42:05,867 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] [2024-10-14 14:42:05,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-14 14:42:06,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-14 14:42:06,068 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:42:06,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:42:06,068 INFO L85 PathProgramCache]: Analyzing trace with hash -111585165, now seen corresponding path program 3 times [2024-10-14 14:42:06,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:42:06,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412464285] [2024-10-14 14:42:06,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:42:06,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:42:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:42:06,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:42:06,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:42:06,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412464285] [2024-10-14 14:42:06,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412464285] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:42:06,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:42:06,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:42:06,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684176244] [2024-10-14 14:42:06,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:42:06,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:42:06,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:42:06,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:42:06,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:42:06,188 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-14 14:42:06,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 158 transitions, 1981 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:42:06,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:42:06,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-14 14:42:06,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:42:06,700 INFO L124 PetriNetUnfolderBase]: 3417/5938 cut-off events. [2024-10-14 14:42:06,701 INFO L125 PetriNetUnfolderBase]: For 44385/44429 co-relation queries the response was YES. [2024-10-14 14:42:06,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29748 conditions, 5938 events. 3417/5938 cut-off events. For 44385/44429 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 38924 event pairs, 1209 based on Foata normal form. 108/5972 useless extension candidates. Maximal degree in co-relation 29381. Up to 3152 conditions per place. [2024-10-14 14:42:06,740 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 123 selfloop transitions, 17 changer transitions 25/191 dead transitions. [2024-10-14 14:42:06,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 191 transitions, 2590 flow [2024-10-14 14:42:06,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:42:06,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:42:06,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2024-10-14 14:42:06,741 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5542857142857143 [2024-10-14 14:42:06,741 INFO L175 Difference]: Start difference. First operand has 128 places, 158 transitions, 1981 flow. Second operand 5 states and 97 transitions. [2024-10-14 14:42:06,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 191 transitions, 2590 flow [2024-10-14 14:42:06,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 191 transitions, 2457 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-10-14 14:42:06,884 INFO L231 Difference]: Finished difference. Result has 124 places, 139 transitions, 1663 flow [2024-10-14 14:42:06,885 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1761, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1663, PETRI_PLACES=124, PETRI_TRANSITIONS=139} [2024-10-14 14:42:06,885 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 86 predicate places. [2024-10-14 14:42:06,885 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 139 transitions, 1663 flow [2024-10-14 14:42:06,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:42:06,885 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:42:06,885 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:42:06,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-14 14:42:06,886 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:42:06,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:42:06,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1406775322, now seen corresponding path program 9 times [2024-10-14 14:42:06,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:42:06,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960594606] [2024-10-14 14:42:06,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:42:06,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:42:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:42:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:42:09,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:42:09,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960594606] [2024-10-14 14:42:09,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960594606] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:42:09,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85439306] [2024-10-14 14:42:09,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 14:42:09,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:42:09,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:42:09,246 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:42:09,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 14:42:09,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-14 14:42:09,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:42:09,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 14:42:09,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:42:09,576 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-14 14:42:09,576 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 14:42:09,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85439306] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:42:09,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 14:42:09,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 21 [2024-10-14 14:42:09,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171583330] [2024-10-14 14:42:09,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:42:09,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:42:09,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:42:09,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:42:09,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-10-14 14:42:09,583 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-14 14:42:09,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 139 transitions, 1663 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-10-14 14:42:09,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:42:09,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-14 14:42:09,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:42:10,355 INFO L124 PetriNetUnfolderBase]: 3250/5721 cut-off events. [2024-10-14 14:42:10,356 INFO L125 PetriNetUnfolderBase]: For 37778/37829 co-relation queries the response was YES. [2024-10-14 14:42:10,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27825 conditions, 5721 events. 3250/5721 cut-off events. For 37778/37829 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 38182 event pairs, 1074 based on Foata normal form. 26/5708 useless extension candidates. Maximal degree in co-relation 27480. Up to 2358 conditions per place. [2024-10-14 14:42:10,393 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 93 selfloop transitions, 49 changer transitions 32/190 dead transitions. [2024-10-14 14:42:10,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 190 transitions, 2251 flow [2024-10-14 14:42:10,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 14:42:10,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 14:42:10,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-10-14 14:42:10,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2024-10-14 14:42:10,395 INFO L175 Difference]: Start difference. First operand has 124 places, 139 transitions, 1663 flow. Second operand 8 states and 142 transitions. [2024-10-14 14:42:10,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 190 transitions, 2251 flow [2024-10-14 14:42:10,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 190 transitions, 2169 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-10-14 14:42:10,467 INFO L231 Difference]: Finished difference. Result has 122 places, 134 transitions, 1629 flow [2024-10-14 14:42:10,468 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1591, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1629, PETRI_PLACES=122, PETRI_TRANSITIONS=134} [2024-10-14 14:42:10,468 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 84 predicate places. [2024-10-14 14:42:10,468 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 134 transitions, 1629 flow [2024-10-14 14:42:10,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-10-14 14:42:10,468 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:42:10,468 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] [2024-10-14 14:42:10,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-14 14:42:10,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-14 14:42:10,669 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:42:10,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:42:10,669 INFO L85 PathProgramCache]: Analyzing trace with hash 208255937, now seen corresponding path program 1 times [2024-10-14 14:42:10,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:42:10,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714673774] [2024-10-14 14:42:10,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:42:10,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:42:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:42:11,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:42:11,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:42:11,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714673774] [2024-10-14 14:42:11,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714673774] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:42:11,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875019376] [2024-10-14 14:42:11,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:42:11,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:42:11,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:42:11,930 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:42:11,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-14 14:42:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:42:12,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-14 14:42:12,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:42:12,084 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 23 treesize of output 1 [2024-10-14 14:42:12,407 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2024-10-14 14:42:12,407 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 82 treesize of output 35 [2024-10-14 14:42:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:42:12,428 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:42:14,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 81 treesize of output 73 [2024-10-14 14:42:14,089 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-10-14 14:42:14,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 174 treesize of output 160 [2024-10-14 14:42:16,758 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:42:16,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875019376] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:42:16,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:42:16,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 35 [2024-10-14 14:42:16,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331577737] [2024-10-14 14:42:16,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:42:16,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-14 14:42:16,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:42:16,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-14 14:42:16,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1098, Unknown=0, NotChecked=0, Total=1260 [2024-10-14 14:42:16,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-14 14:42:16,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 134 transitions, 1629 flow. Second operand has 36 states, 36 states have (on average 9.333333333333334) internal successors, (336), 36 states have internal predecessors, (336), 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) [2024-10-14 14:42:16,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:42:16,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-14 14:42:16,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:42:24,972 INFO L124 PetriNetUnfolderBase]: 3856/6703 cut-off events. [2024-10-14 14:42:24,972 INFO L125 PetriNetUnfolderBase]: For 41989/42059 co-relation queries the response was YES. [2024-10-14 14:42:24,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31742 conditions, 6703 events. 3856/6703 cut-off events. For 41989/42059 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 44840 event pairs, 1447 based on Foata normal form. 57/6679 useless extension candidates. Maximal degree in co-relation 31687. Up to 3087 conditions per place. [2024-10-14 14:42:25,022 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 241 selfloop transitions, 53 changer transitions 34/344 dead transitions. [2024-10-14 14:42:25,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 344 transitions, 3439 flow [2024-10-14 14:42:25,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-14 14:42:25,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-14 14:42:25,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 431 transitions. [2024-10-14 14:42:25,025 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4560846560846561 [2024-10-14 14:42:25,025 INFO L175 Difference]: Start difference. First operand has 122 places, 134 transitions, 1629 flow. Second operand 27 states and 431 transitions. [2024-10-14 14:42:25,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 344 transitions, 3439 flow [2024-10-14 14:42:25,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 344 transitions, 3303 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-10-14 14:42:25,105 INFO L231 Difference]: Finished difference. Result has 143 places, 163 transitions, 1967 flow [2024-10-14 14:42:25,105 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1967, PETRI_PLACES=143, PETRI_TRANSITIONS=163} [2024-10-14 14:42:25,105 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 105 predicate places. [2024-10-14 14:42:25,105 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 163 transitions, 1967 flow [2024-10-14 14:42:25,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 9.333333333333334) internal successors, (336), 36 states have internal predecessors, (336), 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) [2024-10-14 14:42:25,106 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:42:25,106 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] [2024-10-14 14:42:25,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-14 14:42:25,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:42:25,307 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:42:25,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:42:25,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1674729363, now seen corresponding path program 2 times [2024-10-14 14:42:25,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:42:25,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34727379] [2024-10-14 14:42:25,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:42:25,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:42:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:42:27,283 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:42:27,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:42:27,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34727379] [2024-10-14 14:42:27,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34727379] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:42:27,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415347861] [2024-10-14 14:42:27,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 14:42:27,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:42:27,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:42:27,286 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:42:27,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-14 14:42:27,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 14:42:27,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:42:27,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-14 14:42:27,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:42:27,439 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 [2024-10-14 14:42:27,857 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:42:27,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:42:28,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 78 treesize of output 70 [2024-10-14 14:42:28,722 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-10-14 14:42:28,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 167 treesize of output 138 [2024-10-14 14:42:28,928 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:42:28,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415347861] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:42:28,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:42:28,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 35 [2024-10-14 14:42:28,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30351022] [2024-10-14 14:42:28,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:42:28,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-14 14:42:28,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:42:28,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-14 14:42:28,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1104, Unknown=0, NotChecked=0, Total=1260 [2024-10-14 14:42:28,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-14 14:42:28,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 163 transitions, 1967 flow. Second operand has 36 states, 36 states have (on average 9.333333333333334) internal successors, (336), 36 states have internal predecessors, (336), 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) [2024-10-14 14:42:28,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:42:28,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-14 14:42:28,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:42:36,916 INFO L124 PetriNetUnfolderBase]: 5518/9635 cut-off events. [2024-10-14 14:42:36,916 INFO L125 PetriNetUnfolderBase]: For 62935/63015 co-relation queries the response was YES. [2024-10-14 14:42:36,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47347 conditions, 9635 events. 5518/9635 cut-off events. For 62935/63015 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 69583 event pairs, 1145 based on Foata normal form. 61/9654 useless extension candidates. Maximal degree in co-relation 47281. Up to 1355 conditions per place. [2024-10-14 14:42:36,988 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 379 selfloop transitions, 154 changer transitions 44/593 dead transitions. [2024-10-14 14:42:36,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 593 transitions, 6209 flow [2024-10-14 14:42:36,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-14 14:42:36,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-10-14 14:42:36,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 765 transitions. [2024-10-14 14:42:36,991 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46504559270516715 [2024-10-14 14:42:36,991 INFO L175 Difference]: Start difference. First operand has 143 places, 163 transitions, 1967 flow. Second operand 47 states and 765 transitions. [2024-10-14 14:42:36,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 593 transitions, 6209 flow [2024-10-14 14:42:37,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 593 transitions, 6036 flow, removed 62 selfloop flow, removed 10 redundant places. [2024-10-14 14:42:37,156 INFO L231 Difference]: Finished difference. Result has 192 places, 247 transitions, 3464 flow [2024-10-14 14:42:37,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1852, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=3464, PETRI_PLACES=192, PETRI_TRANSITIONS=247} [2024-10-14 14:42:37,157 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 154 predicate places. [2024-10-14 14:42:37,157 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 247 transitions, 3464 flow [2024-10-14 14:42:37,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 9.333333333333334) internal successors, (336), 36 states have internal predecessors, (336), 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) [2024-10-14 14:42:37,157 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:42:37,157 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] [2024-10-14 14:42:37,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-14 14:42:37,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:42:37,358 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:42:37,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:42:37,358 INFO L85 PathProgramCache]: Analyzing trace with hash 899290235, now seen corresponding path program 3 times [2024-10-14 14:42:37,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:42:37,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539826670] [2024-10-14 14:42:37,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:42:37,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:42:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:42:39,076 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:42:39,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:42:39,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539826670] [2024-10-14 14:42:39,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539826670] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:42:39,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206942510] [2024-10-14 14:42:39,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 14:42:39,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:42:39,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:42:39,078 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:42:39,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-14 14:42:39,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 14:42:39,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:42:39,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-14 14:42:39,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:42:39,231 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 [2024-10-14 14:42:39,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:42:39,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:42:40,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 78 treesize of output 70 [2024-10-14 14:42:40,518 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-10-14 14:42:40,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 167 treesize of output 138 [2024-10-14 14:42:40,759 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:42:40,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206942510] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:42:40,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:42:40,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 35 [2024-10-14 14:42:40,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872477521] [2024-10-14 14:42:40,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:42:40,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-14 14:42:40,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:42:40,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-14 14:42:40,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1105, Unknown=0, NotChecked=0, Total=1260 [2024-10-14 14:42:40,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-14 14:42:40,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 247 transitions, 3464 flow. Second operand has 36 states, 36 states have (on average 9.333333333333334) internal successors, (336), 36 states have internal predecessors, (336), 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) [2024-10-14 14:42:40,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:42:40,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-14 14:42:40,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand